Thailand climate guide

Temperature in Thailand (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
32°C maximum daytime temperature in January in Thailand (Bangkok)32
33°C maximum daytime temperature in February in Thailand (Bangkok)33
34°C maximum daytime temperature in March in Thailand (Bangkok)34
35°C maximum daytime temperature in April in Thailand (Bangkok)35
34°C maximum daytime temperature in May in Thailand (Bangkok)34
33°C maximum daytime temperature in June in Thailand (Bangkok)33
33°C maximum daytime temperature in July in Thailand (Bangkok)33
32°C maximum daytime temperature in August in Thailand (Bangkok)32
32°C maximum daytime temperature in September in Thailand (Bangkok)32
32°C maximum daytime temperature in October in Thailand (Bangkok)32
32°C maximum daytime temperature in November in Thailand (Bangkok)32
31°C maximum daytime temperature in December in Thailand (Bangkok)31
Min temperature (night-time)
21°C minimum night-time temperature in January in Thailand (Bangkok)21
23°C minimum night-time temperature in February in Thailand (Bangkok)23
25°C minimum night-time temperature in March in Thailand (Bangkok)25
26°C minimum night-time temperature in April in Thailand (Bangkok)26
26°C minimum night-time temperature in May in Thailand (Bangkok)26
26°C minimum night-time temperature in June in Thailand (Bangkok)26
25°C minimum night-time temperature in July in Thailand (Bangkok)25
25°C minimum night-time temperature in August in Thailand (Bangkok)25
25°C minimum night-time temperature in September in Thailand (Bangkok)25
24°C minimum night-time temperature in October in Thailand (Bangkok)24
23°C minimum night-time temperature in November in Thailand (Bangkok)23
21°C minimum night-time temperature in December in Thailand (Bangkok)21

Sunshine & Daylight in Thailand

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
11 hours of daylight per day in January in Thailand (Bangkok)11
12 hours of daylight per day in February in Thailand (Bangkok)12
12 hours of daylight per day in March in Thailand (Bangkok)12
12 hours of daylight per day in April in Thailand (Bangkok)12
13 hours of daylight per day in May in Thailand (Bangkok)13
13 hours of daylight per day in June in Thailand (Bangkok)13
13 hours of daylight per day in July in Thailand (Bangkok)13
13 hours of daylight per day in August in Thailand (Bangkok)13
12 hours of daylight per day in September in Thailand (Bangkok)12
12 hours of daylight per day in October in Thailand (Bangkok)12
11 hours of daylight per day in November in Thailand (Bangkok)11
11 hours of daylight per day in December in Thailand (Bangkok)11

Rainfall in Thailand

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
1 day with some rainfall in January in Thailand (Bangkok)1
3 days with some rainfall in February in Thailand (Bangkok)3
3 days with some rainfall in March in Thailand (Bangkok)3
6 days with some rainfall in April in Thailand (Bangkok)6
15 days with some rainfall in May in Thailand (Bangkok)15
15 days with some rainfall in June in Thailand (Bangkok)15
17 days with some rainfall in July in Thailand (Bangkok)17
19 days with some rainfall in August in Thailand (Bangkok)19
20 days with some rainfall in September in Thailand (Bangkok)20
16 days with some rainfall in October in Thailand (Bangkok)16
6 days with some rainfall in November in Thailand (Bangkok)6
1 day with some rainfall in December in Thailand (Bangkok)1
Average monthly rainfall (mm)
8 mm monthly rainfall in January in Thailand (Bangkok)8
21 mm monthly rainfall in February in Thailand (Bangkok)21
31 mm monthly rainfall in March in Thailand (Bangkok)31
68 mm monthly rainfall in April in Thailand (Bangkok)68
182 mm monthly rainfall in May in Thailand (Bangkok)182
159 mm monthly rainfall in June in Thailand (Bangkok)159
167 mm monthly rainfall in July in Thailand (Bangkok)167
207 mm monthly rainfall in August in Thailand (Bangkok)207
292 mm monthly rainfall in September in Thailand (Bangkok)292
199 mm monthly rainfall in October in Thailand (Bangkok)199
49 mm monthly rainfall in November in Thailand (Bangkok)49
11 mm monthly rainfall in December in Thailand (Bangkok)11

More climate for Thailand

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 10 (Very High) in January in Thailand (Bangkok)10
UV (maximum) index 11+ (Extreme) in February in Thailand (Bangkok)11
UV (maximum) index 11+ (Extreme) in March in Thailand (Bangkok)11
UV (maximum) index 11+ (Extreme) in April in Thailand (Bangkok)11
UV (maximum) index 11+ (Extreme) in May in Thailand (Bangkok)11
UV (maximum) index 11+ (Extreme) in June in Thailand (Bangkok)11
UV (maximum) index 11+ (Extreme) in July in Thailand (Bangkok)11
UV (maximum) index 11+ (Extreme) in August in Thailand (Bangkok)11
UV (maximum) index 11+ (Extreme) in September in Thailand (Bangkok)11
UV (maximum) index 11 (Extreme) in October in Thailand (Bangkok)11
UV (maximum) index 10 (Very High) in November in Thailand (Bangkok)10
UV (maximum) index 9 (Very High) in December in Thailand (Bangkok)9
Heat & Humidity
High heat & humidity in January in Thailand (Bangkok)H
Very high heat & humidity in February in Thailand (Bangkok)VH
Very high heat & humidity in March in Thailand (Bangkok)VH
Extreme heat & humidity in April in Thailand (Bangkok)E
Extreme heat & humidity in May in Thailand (Bangkok)E
Very high heat & humidity in June in Thailand (Bangkok)VH
Very high heat & humidity in July in Thailand (Bangkok)VH
Very high heat & humidity in August in Thailand (Bangkok)VH
Very high heat & humidity in September in Thailand (Bangkok)VH
Very high heat & humidity in October in Thailand (Bangkok)VH
High heat & humidity in November in Thailand (Bangkok)H
High heat & humidity in December in Thailand (Bangkok)H

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

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The climate guide for Thailand, represented by Bangkok, shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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Metric (°C / mm)  |  Imperial (°F / inches)

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Thailand climate overview

Thailand is a country with a rich history and distinct cultural identity centred on the Buddhist religion and a respect for tradition. These things, combined with a warm climate and spectacular landscapes, from forested mountains to golden sandy beaches, make it one of the most popular tourist destinations in Asia today.

Geographically Thailand can be divided into four regions. In the north, centred on Chiang Mai, and along almost the entire length of the border with Burma, are mountains.

To the east towards the border with Laos is the Korat Plateau, a relatively arid region characterised by undulating hills. Between these is the central lowland plain, an incredibly fertile area, where most of the population lives and where the capital Bangkok is located.

In the far south is the southern peninsular that stretches all the way down to the border with Malaysia. This is where most of the beach resorts can be found, such as Phuket and Krabi.

The weather in Thailand is dominated by the two Asian monsoons. From May to October the south-west monsoon brings moisture from the Indian Ocean that falls as rain, peaking in August and September in the north, and a month or two later further south.

From October to February the wind direction is reversed and a cooler drier north-east monsoon wind blows off the Asian landmass, bringing a dry season. Temperatures fall slightly in the dry season but this is only really noticeable at night.

There is a short transitional period between the monsoons during March and April. This is the hottest time of the year over the whole country. In the far south proximity to the sea moderates the heat somewhat, however some parts of central Thailand can become almost unbearably hot and humid in April and May.

With the onset of the monsoon in May temperatures drop slightly and cloudier conditions persist through to October in the north, and right into December in the south particularly on Gulf of Thailand coast to the south of Koh Samui. However this east coast also gets less rain than the west coast in the early part of the wet season from May to October.

Thailand is largely protected from the full force of typhoons that affect the South China Sea by the landmass of Laos, Vietnam and Cambodia lying between it and the ocean to the east.

Usually dissipated storms affect only the north of the country, particularly in September and October when they can bring a lot of rain and flooding. However very occasionally one will slip into the Gulf of Thailand to the south of Vietnam and strike the far south of the country.

In December 2004 all coastal areas on the west side of the peninsular were severely affected by the Boxing Day Indian Ocean Tsunami, which also led to great loss of life.

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Popular Thailand destinations

Below are average maximum temperatures at popular destinations in Thailand for next month - August. Select a destination to see the climate guide for all months of the year.

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