Monthly weather forecast and climate
Bangkok, Thailand

A beautiful park outside the Wat Ratchanatdaram Temple in the heart of Bangkok, Thailand
A beautiful park outside the Wat Ratchanatdaram Temple in the heart of Bangkok, Thailand

The best time to visit Bangkok

The best months for a swim in Bangkok, Thailand, are January through March and December, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.

Weather in January

January, the same as December, in Bangkok, Thailand, is a hot winter month, with average temperature varying between 22.6°C (72.7°F) and 32.5°C (90.5°F). The perfect water temperature of 26.7°C (80.1°F) with 13.3mm (0.52") of accumulated rainfall and only 1 rainfall days, makes January a great period for swimming and other water activities. Weather in January »

Weather in February

February, the last month of the winter, in Bangkok, is another hot month, with average temperature fluctuating between 33.3°C (91.9°F) and 24.4°C (75.9°F). The ideal sea water temperature of 27.5°C (81.5°F) and only 3 rainfall days, with 20mm (0.79") of accumulated rainfall, makes February the best time for swimming and other water activities. Weather in February »

Weather in March

The first month of the spring, March, is still a hot month in Bangkok, Thailand, with average temperature fluctuating between 25.9°C (78.6°F) and 34.3°C (93.7°F). An excellent water temperature of 28.3°C (82.9°F) and only 3 rainfall days, with 42.1mm (1.66") of accumulated rainfall, makes March a prime for swimming and other water activities. Weather in March »

Weather in April

April is a torrid spring month in Bangkok, Thailand, with temperature in the range of an average low of 26.9°C (80.4°F) and an average high of 35.4°C (95.7°F). With an average high-temperature of 35.4°C (95.7°F) and an average low-temperature of 26.9°C (80.4°F), April is the warmest month. The average heat index is estimated at a life-threatening hot 53.1°C (127.6°F). Weather in April »

Weather in May

The last month of the spring, May, is another tropical month in Bangkok, Thailand, with average temperature fluctuating between 34.4°C (93.9°F) and 26.3°C (79.3°F). In May, the average high-temperature is essentially the same as in April - a tropical 34.4°C (93.9°F). Weather in May »

Weather in June

June, the first month of the summer, in Bangkok, is also a hot month, with average temperature varying between 26.1°C (79°F) and 33.6°C (92.5°F). In June, the average high-temperature is essentially the same as in May - a still tropical 33.6°C (92.5°F). Weather in June »

Weather in July

July, like June, is a hot summer month in Bangkok, Thailand, with average temperature varying between 25.7°C (78.3°F) and 33.2°C (91.8°F). In Bangkok, the average high-temperature in July is practically the same as in June - a still tropical 33.2°C (91.8°F). Weather in July »

Weather in August

August, the last month of the summer, in Bangkok, is another hot month, with average temperature fluctuating between 32.9°C (91.2°F) and 25.5°C (77.9°F). In August, the average high-temperature is essentially the same as in July - a still tropical 32.9°C (91.2°F). Weather in August »

Weather in September

September, the first month of the autumn, in Bangkok, is also a hot month, with average temperature fluctuating between 25°C (77°F) and 32.8°C (91°F). In September, the average high-temperature is relatively the same as in August - a still hot 32.8°C (91°F). Weather in September »

Weather in October

October, the same as September, in Bangkok, Thailand, is another tropical autumn month, with temperature in the range of an average low of 24.8°C (76.6°F) and an average high of 32.6°C (90.7°F). In Bangkok, Thailand, the average high-temperature in October is relatively the same as in September - a still hot 32.6°C (90.7°F). Weather in October »

Weather in November

The last month of the autumn, November, is also a hot month in Bangkok, Thailand, with temperature in the range of an average low of 23.9°C (75°F) and an average high of 32.4°C (90.3°F). In Bangkok, the average high-temperature is practically the same as in October - a still tropical 32.4°C (90.3°F). Weather in November »

Weather in December

December, the first month of the winter, in Bangkok, is still a hot month, with average temperature fluctuating between 31.7°C (89.1°F) and 22°C (71.6°F). The perfect water temperature of 27.9°C (82.2°F) with 6.3mm (0.25") of accumulated rainfall and only 1 rainfall days, makes December a great period for swimming and other water activities. Weather in December »
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FAQ

How much does it rain in Bangkok?

Throughout the year, there are 128 rainfall days, and 1648.2mm (64.89") of precipitation is accumulated.

What month is the sea coldest in Bangkok?

January is the month with the coldest seawater, with an average sea temperature of 26.7°C (80.1°F).

What month has the most sunshine in Bangkok?

February has the most sunshine of the year in Bangkok, Thailand, with an average of 9h of sunshine.

What is the month with the highest UV index in Bangkok?

February through September, with an average maximum UV index of 12, are months with the highest UV index.

What is the warmest month in Bangkok?

With an average high-temperature of 35.4°C (95.7°F) and an average low-temperature of 26.9°C (80.4°F), April is the warmest month.

When is the sea warmest in Bangkok?

May is the month with the warmest seawater, with an average sea temperature of 29.9°C (85.8°F).

When are the longest days in Bangkok?

With an average of 12.9h of daylight, June has the longest days of the year in Bangkok.

What is the month with the least sunshine in Bangkok?

Months with the least sunshine are August and September, with an average of 5.2h of sunshine.

What is the most humid month in Bangkok?

September is the most humid month, with an average relative humidity of 79%.

What is the rainiest month in Bangkok?

The month with the most rainfall in Bangkok is September when the rain falls for 21 days and typically aggregates up to 334.3mm (13.16") of precipitation.

What is the coldest month in Bangkok?

The coldest month in Bangkok, Thailand, is December, with an average high-temperature of 31.7°C (89.1°F) and an average low-temperature of 22°C (71.6°F).

What is the least humid month in Bangkok?

With an average relative humidity of 66%, December is the least humid month in Bangkok.

What is the driest month in Bangkok?

December is the month with the least rainfall. Rain falls for 1 days and accumulates 6.3mm (0.25") of precipitation.

What is the month with the shortest days in Bangkok?

December has the shortest days of the year in Bangkok, with an average of 11.3h of daylight.

When is the lowest UV index in Bangkok?

With an average maximum UV index of 9, December is the month with the lowest UV index in Bangkok.

Average temperature
Bangkok, Thailand

Average temperature - Bangkok, Thailand

The warmest month (with the highest average high temperature) is April (35.4°C).
The month with the lowest average high temperature is December (31.7°C).

The month with the highest average low temperature is April (26.9°C).
The coldest month (with the lowest average low temperature) is December (22°C).

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Average humidity
Bangkok, Thailand

Average humidity - Bangkok, Thailand

The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is December (66%).

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Average rainfall
Bangkok, Thailand

Average rainfall - Bangkok, Thailand

The wettest month (with the highest rainfall) is September (334.3mm).
The driest month (with the least rainfall) is December (6.3mm).

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Average rainfall days
Bangkok, Thailand

Average rainfall days - Bangkok, Thailand

The month with the highest number of rainy days is September (21 days).
Months with the least rainy days are January and December (1 days).

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Average sea temperature
Bangkok, Thailand

Average sea temperature - Bangkok, Thailand

The best month for swimming (with the highest average sea temperature) is May (29.9°C).
The coldest month (with the lowest average sea temperature) is January (26.7°C).

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Average daylight / Average sunshine
Bangkok, Thailand

Average daylight / Average sunshine - Bangkok, Thailand

The month with the longest days is June (Average daylight: 12.9h).
The month with the shortest days is December (Average daylight: 11.3h).

The month with the most sunshine is February (Average sunshine: 9h).
Months with the least sunshine are August and September (Average sunshine: 5.2).

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Average UV index
Bangkok, Thailand

Average UV index - Bangkok, Thailand

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).

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