Thailand month by month: weather, landscapes and seasons in pictures

When planning a trip to Thailand, I can confirm how quickly the weather comes up in discussions. With a little research, you'll quickly understand that there are generally three main periods:

a dry seasonwhich, depending on the region, takes place from November to February;
a hot seasonwhich starts at the end of February and continues until May;
a rainy seasonroughly from May to November.

But on the ground, this division defined by most tourism players is actually more complex and more subtle: the sky, the landscapes, the light and even the atmosphere change a lot depending on the month and especially depending on the region.

In this article, I offer you a visual overview of Thailand month by month , based on my own photos and my experience there, with its advantages, its limitations and some guidelines to help you choose your travel period.

Summary hide

Thailand month by month: what to expect depending on the period?

1. Weather in Thailand in January

2. Weather in Thailand in February

3. Weather in Thailand in March

4. Weather in Thailand in April

5. Weather in Thailand in May

6. Weather in Thailand in June

7. Weather in Thailand in July

8. Weather in Thailand in August

9. Weather in Thailand in September

10. Weather in Thailand in October

11. Weather in Thailand in November

12. Weather in Thailand in December

The least favorable months to travel to Thailand

So, what is the best month to visit Thailand?

Thailand month by month: what to expect depending on the period?

The goal here is not to provide you with a perfect month-by-month weather forecast (that would be mission impossible), nor even to rank the months from best to worst.

Each month has its advantages and disadvantages.

The idea is simply to show what the country can look like depending on the time of year : sunny beaches, misty mountains, green rice paddies, stifling heat, clear or completely overcast skies, or lush landscapes in the middle of the rainy season and conversely completely dry in the dry season.

For a more practical approach, here are the regions to prioritize depending on your dates:
→ You can consult my complete guide on When to go to Thailand
→ or even use my selection tool regions depending on the chosen period.

1. Weather in Thailand in January

January is therefore part of what is called "winter", as mentioned above. It is considered a very good time to visit Thailand for several reasons.

Good points :

The rainy season is over everywhere (north and south), which means good weather and blue skies.
Since it's winter, the temperature is more pleasant, less heavy, even cool in the evening, especially in the mountains.
It's a good month to visit the north of the country and observe the seas of clouds from viewpoints overlooking the misty valleys in the morning.
You can also see the superb cherry trees in bloom (similar to the sakura trees in Japan, but which bloom there in April).

Negative points :

Everyone is looking for the perfect time, combining the Christmas/New Year school holidays and the desire to escape the cold winter in Europe… I don't need to spell it out for you, we are in the middle of the tourist season!
This results in higher prices than in the off-season (up to +50%!) and, above all, little chance of enjoying your beach alone unless you isolate yourself (the islands off Ranong (or Trang are examples).

phang nga bay south thailand in january — Phang Nga Bay in January.

phuket north beach in january — Beach in the north of Phuket last January.

sea cloud phu chi fah north thailand in january — Sea of clouds at Phu Chi Fah in January.

chiang saen landscape in january — Landscape in Chiang Saen.

doi pha tang thailand in january — Northern Mountain in January.

temperature summit thailand in january — Yes, yes, it can get cold in Thailand! (well, it was at 2500m altitude too...)

rice paddy thailand in january — Dry rice field in January.

flowering trees mountain north thailand in january — Blossoming trees in northern Thailand in January.

2. Weather in Thailand in February

February is still "winter," but you can already feel the transition to the warmer season. Temperatures are rising gradually, the air is becoming hazier, and the vegetation is turning yellow. According to the lunar calendar, you might also experience Chinese New Year , which is widely celebrated throughout the country.

Good points :

Little or no rain: it's still a good season for most regions.
The north is starting to get less crowded, making visits more peaceful.

Negative points :

In the south, the high season is still in full swing: more crowded beaches and higher prices.
In the north, the vegetation dries out after several months without rain: less green landscapes, more frequent heat haze.
Few or no lush green rice paddies: even if some replanting exists, it is not as spectacular as in the good season.
Depending on the year, burning can start from the end of the month.

rice field landscape north thailand in february

3. Weather in Thailand in March

March truly marks the beginning of summer: it's one of the hottest times of the year. The heat is oppressive, the humidity high, especially in cities. The south is less affected, but as a result, there are still quite a few people there at this time of year.

Good points :

Fewer people than during the Christmas holidays, especially in the north.
A very good time to visit the islands, both on the Gulf of Thailand and the Andaman Sea: the sea is often beautiful, with good visibility.
If you are not focused on lush green jungle, this is a good season for Issan and its Khmer temples (e.g. Phimai).
Lower river levels: certain activities (eating with your feet in the water, quiet streams, etc.) are then available.

Negative points :

The heat is humid and sometimes stifling, especially in Bangkok.
Urban visits are more tiring: it is better to alternate cultural mornings with cool afternoons (shopping centre, hotel pool).
In the north, the vegetation is dry and dull: clearly not the best month to enjoy the lush mountains.
The burning begins and creates significant pollution in addition to blocking views.

ban krut south thailand in march — Misty landscape in Ban Krut in southern Thailand.

koh mak island in march — Ko Mak Island in March.

phattalung landscape south thailand in march — Misty landscape in Phatthalung in March.

rice fields northern thailand in march — Rice paddy visible in March in northern Thailand.

To give a more concrete idea of the "blocked view" aspect linked to the heat and burning of March, I give you a specific example, taken here at Wat Chaloem Phra Kiat in Lampang, with comparison to another period of the year.

foggy view wat phra bat phu pha daeng — In March, it's not quite as crazy right away.

view from Wat Lampang temple — One August afternoon it looked like this.

north lampang temple in march — Another example with foggy landscape.

north lampang temple in november — And without the fog, it really changes the game!

4. Weather in Thailand in April

April is the hottest month of the year in Thailand, so you shouldn't worry too much about the heat. However, in the middle of the month, you can experience one of the country's most famous festivals, the Thai New Year , Songkran, also known as the "water festival".

Good points :

Fewer people than during the Christmas holidays, especially in the north.
A very good time to visit the islands, both on the Gulf of Thailand and the Andaman Sea: the sea is often beautiful, with good visibility.
If you are not focused on lush green jungle, this is a good season for Issan and its Khmer temples (e.g. Phimai).
Lower river levels: certain activities (eating with your feet in the water, quiet streams, etc.) are then available.

Negative points :

Very busy period around New Year: full transport, full hotels, especially around mid-April.
Extreme temperatures: 38–40 °C easily, with a perceived temperature often exceeding 45 °C.
In the north and central plains, the vegetation is very dry, the waterfalls sometimes reduced to a trickle of water: a much more arid atmosphere.
The end of the month marks a transition phase; if greenery can return, it is because storms are making their return.
Towards the Andaman Sea, the weather is also starting to change, although it is not quite the rainy season yet.

North side

mist and dry landscape in april - thailand

South side

Arrival dock, Ko Tao Island, Thailand — Beautiful sunshine upon arrival on Koh Tao in April.

5. Weather in Thailand in May

May generally marks the beginning of the rainy season. It starts off quite strongly in Bangkok and Chiang Mai, where this month is on average wetter than June or July. However, this isn't the case for the whole country: in Chiang Rai, July receives significantly more rain than May. The heat is still quite intense, with high humidity.

Several local festivals take place, notably in Yasothon with its rocket festival and the sacred furrow ceremony in Bangkok.

Good points :

The country is emptying out: if a changeable sky doesn't scare you, you'll be more at ease.
Rain is often concentrated at the end of the day: heavy short showers rather than non-stop rain, so beautiful skies during the day.
The waterfalls are filling up, the vegetation is quickly turning green again.
Lower prices than in peak season.

Negative points :

When it rains, it really rains: sometimes violent storms, especially in the south, rough seas and swimming not recommended on some days.
In the north, there are still few or no rice paddies and the paths quickly become muddy for treks.
More mosquitoes with the humidity.

Bangkok sky in May — Blue skies over Bangkok on a day in May.

cloudy sky may bangkok — Later that same day…

6. Weather in Thailand in June

June is officially considered the off-season, but it's not necessarily a bad month to visit. Rainfall is generally less abundant than in May in Chiang Mai, Chiang Rai, and Bangkok. However, this relative lull isn't universal: around Mae Hong Son, rainfall continues to increase. The north, at least, is becoming lush with vegetation.

Good points :

Between showers, periods of calm can last for a good part of the day.
In Chiang Mai, Chiang Rai and Bangkok, June remains less rainy than the wettest months, which come later.
Nature is becoming green and lush again.
No international school holidays: attractive prices and fewer people.

Negative points :

The humid heat is still very much present.
The rice paddies are not really there yet in the north (transplanting takes place in July).
In the south, the Andaman Sea is sometimes well watered, the same is true on the Trat Islands side.

7. Weather in Thailand in July

We're entering the third month of the monsoon season: rain is frequent in the evenings, but the blue skies haven't completely disappeared. Summer vacation brings many families, who generally don't regret coming during the "rainy season."

Good points :

It's not the ideal time for non-stop sunshine, but the sun regularly breaks through the clouds.
The clouds also provide welcome shade.
Less crowded than during the peak season at the end of the year.
This is the month when rice paddies are planted: a great time to see the lush green fields in the north.
The forests benefit from the humidity: the mountains and jungle are very beautiful.
In the Gulf of Thailand (Ko Samui, Ko Phangan, Ko Tao), rain often falls in the late afternoon or at night, leaving beautiful days.

Negative points :

On the Andaman side (Phuket, Krabi, etc.), the situation is deteriorating: rougher sea, frequent showers.
It's difficult to guarantee full days of relaxation without rain on these coasts.

A bit of blue sky in Bangkok in July — Blue sky over Bangkok.

bangkok in july — Grey skies over Bangkok in July, the same day.

sky towards hua hin in july — Blue skies in July towards Hua Hin.

hua hin beach in july — Cloudy skies in Hua Hin on the same day.

8. Weather in Thailand in August

August is the rainiest month in Chiang Mai, Chiang Rai, Nan, and Mae Hong Son. Showers are frequent, overcast skies can persist, and flooding is possible. There is no consistent mid-month shift; rainfall varies from year to year. In Bangkok and much of the central plains, the peak occurs in September.

In the south, the Andaman Sea will regularly have rough seas, with possible cancellations of boat trips. Places such as the Similan and Surin Islands, off Khao Lak, or the famous Maya Bay on Ko Phi Phi , close during this period.

Good points :

Sunny spells are still possible between showers. For the islands, the Gulf of Thailand is often more favorable than the Andaman Sea.
Even in Phuket, there can be some very beautiful days, but nothing is guaranteed.
The forests are at their greenest, and the rice paddies are abundant from the central plains to the mountains of Chiang Mai.

Negative points :

School holidays always bring crowds to the most touristy spots.
The rains are becoming more regular: you have little chance of escaping them completely.
Sea regularly rough, sites closed (Similan, Surin, Maya Bay)

tak dam in august — Very green landscape at the Tak Dam in August.

tak dam in march — In contrast, same place in March, with the heat haze...

9. Weather in Thailand in September

September is the wettest month in Bangkok and several cities in the central plains, such as Sukhothai. In Chiang Mai and Chiang Rai, rainfall remains heavy, but the peak has already passed in August. It therefore remains a wet month across much of the country, with fewer tourists and lower prices.

Good points :

Very few people: it's definitely off-season.
Slight improvement in the far south (Tarutao archipelago, Ko Lipe) compared to August.
Ko Samui is generally less bad than the Andaman coast (Phuket, Krabi, etc.).
Nature is splendid: waterlogged forests, intensely green rice paddies.

Negative points :

In Bangkok and the central plains, rainfall can be heavy. In the North as well, September remains quite wet: showers are not necessarily limited to the evening.
In the south, the sun is much less visible: overcast skies are very common. It's not necessarily unpleasant, but forget about sunbathing on the beach.

gray sky bangkok september — Grey September skies in Bangkok.

strange sky in september — Blue skies in Trang on a September day, in southern Thailand.

sunset bangkok september — A beautiful September sunset in Bangkok.

10. Weather in Thailand in October

October already marks a marked improvement in Chiang Mai, Chiang Rai, and Nan, with significantly less rain than in August or September. In Bangkok and parts of the central plains, however, rainfall remains heavy. Further south, conditions are still so-so on both sides.

Good points :

It's still the off-season period, so the atmosphere is calmer and there are fewer crowds.
From the second half of the month onwards, the Andaman Sea gradually becomes feasible again, although the weather remains very variable.
In Chiang Mai, Chiang Rai and Nan, rainfall decreases significantly in October, without systematically waiting until the end of the month.
The rice paddies are at their peak, the forests are overflowing with greenery.
Warm temperatures but without the excesses of summer.

Negative points :

The rainy season remains very much present and is intensifying in the Gulf of Thailand area.
Localized flooding is possible.

Chao Phraya River bank flooded in October Bangkok — Bank of the Chao Phraya which floods the banks, current during this period.

flooded street bangkok in october — Flooded street after heavy seasonal rain in Bangkok.

cloudy sky bangkok october — Grey skies in Bangkok.

stormy sky amphawa october — Stormy skies in Amphawa.

khao yai national park in october — Hiking in Khao Yai National Park in October.

11. Weather in Thailand in November

In November, we arrive at the Thai "winter": temperatures become milder and the rainy season ends in the plains and the north. It is also a month of festivities with the Loy Krathong festival of lights and, in Chiang Mai, the famous lantern release.

In contrast, the Gulf of Thailand is receiving a lot of rain while the Andaman Sea is starting to get windy, although it remains unstable.

Good points :

The first two weeks of November are, for me, an ideal time to visit the north.
End of the rainy season: return of sunshine and beautiful blue skies (with a few showers still possible).
Lush mountains, jungle at its greenest, well-fed waterfalls.
The rice paddies are starting to turn yellow: harvest time, very beautiful for photos.
For the beach, the islands in the gulf off Trat become interesting: Koh Chang, Koh Mak, Koh Kood, or even closer to Bangkok, Koh samet and Ko Larn.

Negative points :

For Ko Samui and the rest of the Gulf further south, November is the rainiest month: sea often murky, sky heavy.
On the Phuket and Andaman Sea side, it's less catastrophic, but rain can still be frequent.

doi inthanon forest in november thailand — Very green forest at Doi Inthanon.

landscape golden triangle thailand november — Landscape in the Golden Triangle in November.

sukhothai historical park in november — The small island in the middle of the park in November, note how green it is!

Baan Pa Pong Pieng Rice Terraces - Chiang Mai — Rice paddies in early November.

Since I like comparisons, I'm showing you two spots from two different periods, to clearly distinguish the differences in colours and atmosphere compared to November.

mae ya waterfall in november — Mae Ya Waterfall, at the foot of Doi Inthanon, in November.

mae ya waterfall in august — By comparison, this is what it looks like in August.

northern lampang landscape in november — Very green landscape north of Lampang.

landscape north lampang in january — The same landscape 2 months later in January, what a difference in atmosphere and colors!

12. Weather in Thailand in December

In December, it's definitely winter: temperatures are more pleasant, the north enjoys beautiful skies while the south is slowly emerging from its rainy season, although it's still lingering in the Gulf of Thailand (Ko Samui and co.).

It's a good option for celebrating Christmas in the warmth while enjoying generally mild weather.

Good points :

In the north: beautiful skies, pleasant temperatures, no heatwave.
Nature is still beautiful, the waterfalls still have a good flow.
The views are very clear, especially at higher altitudes.

Negative points :

In the north: the rice paddies were harvested the previous month: the fields are generally empty or fallow.
In the south, rain remains possible in the Gulf of Thailand; the Andaman Sea is generally spared but there may still be some instability.

morning fog phu chi fah - thailand — Fog one December evening in the northern mountains.

cold mountain thailand december — It was really cold that day, a mere 8°C with an icy wind!

koh phi phi in december — Meanwhile, in Ko Phi Phi…

I can't resist a little comparison so that you realize how, in particular, the lack of water quickly affects the landscapes, with here an example taken from Khao Yai , a national park 3 hours' drive from Bangkok.

khao yai in december — Beautiful weather in the mountains of Khao Yai in December.

khao yai in october — Same place, 2 months earlier.

The least favorable months to travel to Thailand

The rainiest months aren't the same everywhere. The general rule "avoid September and October" applies fairly well to Bangkok, but much less so to the north of the country. To help you choose your travel dates, here are the key differences to keep in mind:

Chiang Mai, Chiang Rai, Nan and Mae Hong Son August is the wettest month. September remains wet, then the rains decrease significantly in October, while the landscapes are still green.
Bangkok and the central plains The peak usually occurs in September. October remains very rainy in Bangkok, and still quite wet in Sukhothai. Conditions therefore do not improve everywhere at the same rate.
For the islands and beaches It is especially important to distinguish between the coasts, as sea conditions can limit excursions during the wet season.

However, be aware that for islands in the Gulf such as Ko Samui, Ko Phangan and Ko Tao , the most delicate period is rather towards the end of the year, especially between November and December depending on the year.

So, what is the best month to visit Thailand?

If you often see November, December, January, and February as the simple answer to this question , it's because they remain the easiest months to recommend for a first trip. The weather is generally more pleasant, there's less rain, and the temperatures are more bearable in much of the country.

But these aren't necessarily the best months for everyone. If you dream of lush green rice paddies, powerful waterfalls, and more verdant landscapes, the rainy season can also have a lot of charm, and quite a lot in my opinion.

If your priority is the beach, you will especially need to choose the right coast at the right time: the Andaman coast does not follow exactly the same rhythm as the islands of the gulf, such as Ko Samui, Ko Phangan or Ko Tao.

The most interesting periods therefore depend mainly on the regions you wish to visit and the type of trip you have in mind:

For a first, classic trip: November to February are the best months to choose.
For the Andaman beaches: Aim for November to April instead.
For Ko Samui, Ko Phangan and Ko Tao: February to September often remains the most logical window.
For the rice paddies and green landscapes of the North: July to November is generally more interesting.
For the rainiest months: August is the best time to visit Chiang Mai and Chiang Rai, while September and October are ideal for Bangkok. When choosing a beach, consider the coastline.

Ultimately, there isn't one perfect month for all of Thailand, but rather periods that are more or less suitable depending on your itinerary, your tolerance for heat, and your preferences. This is also what makes the country interesting to explore year-round, provided you adjust your plans slightly according to the season.

If you don't know where to start when planning your itinerary in Thailand, beyond the weather aspect, you can consult my itinerary generator based on the duration and your preferences:

→ Create your route

Thailand month by month in pictures: weather, landscapes and atmosphere

Thailand month by month: what to expect depending on the period?

1. Weather in Thailand in January

2. Weather in Thailand in February

3. Weather in Thailand in March

4. Weather in Thailand in April

5. Weather in Thailand in May

6. Weather in Thailand in June

7. Weather in Thailand in July

8. Weather in Thailand in August

9. Weather in Thailand in September

10. Weather in Thailand in October

11. Weather in Thailand in November

12. Weather in Thailand in December

The least favorable months to travel to Thailand

So, what is the best month to visit Thailand?