Bangkok climate
Bangkok (Thailand) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 28 °C82 °F, and about 1,361 mm54 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Bangkok climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3391 | 2068 | 2679 | 170.7 |
| Feb | 3595 | 2272 | 2984 | 130.5 |
| Mar | 3697 | 2476 | 3086 | 481.9 |
| Apr | 3697 | 2578 | 3187 | 753.0 |
| May | 3392 | 2578 | 2985 | 1646.4 |
| Jun | 3289 | 2577 | 2883 | 1656.5 |
| Jul | 3188 | 2475 | 2882 | 1696.6 |
| Aug | 3188 | 2475 | 2882 | 1817.1 |
| Sep | 3087 | 2475 | 2781 | 27811 |
| Oct | 3086 | 2474 | 2780 | 2038.0 |
| Nov | 3086 | 2171 | 2679 | 391.5 |
| Dec | 3187 | 1967 | 2577 | 100.4 |
| Year | 3697 | 1967 | 2882 | 1,36154 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 64% | 40% | 5.0 | 11:24 |
| Feb | 60% | 35% | 5.5 | 11:41 |
| Mar | 62% | 48% | 5.7 | 12:01 |
| Apr | 66% | 61% | 6.1 | 12:26 |
| May | 76% | 84% | 5.5 | 12:45 |
| Jun | 80% | 89% | 5.3 | 12:56 |
| Jul | 81% | 91% | 5.1 | 12:52 |
| Aug | 82% | 92% | 5.1 | 12:35 |
| Sep | 85% | 91% | 4.9 | 12:11 |
| Oct | 85% | 78% | 4.7 | 11:48 |
| Nov | 80% | 59% | 4.9 | 11:28 |
| Dec | 71% | 47% | 4.9 | 11:19 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Bangkok is like
The warmest month is April, with an average high of 36 °C97 °F and a low of 25 °C78 °F. The coldest is December, when highs average 31 °C87 °F and lows 19 °C67 °F. Seasonal differences are small — just 5.8 °C10.4 °F between the warmest and the coolest month.
It is wet, with about 1,361 mm54 in of precipitation per year. The wettest three-month stretch is August–October, which brings 49% of the annual total. Months with less than 20 mm0.8 in on average: December–February. The wettest month is September (278 mm11 in), the driest is December (10 mm0.4 in).
Relative humidity ranges from 60% in February to 85% in September. The clearest skies (lowest average cloud amount, 35%) are typical of February. Average wind speed near the ground ranges from 5 km/h (3 mph) in October to 8 km/h (5 mph) in March. Daylight lasts from about 11.3 hours in December to 12.9 hours in June.
Best time to visit Bangkok
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November and December. Average highs then reach 30 °C86 °F to 31 °C87 °F. Precipitation is 10 mm0.4 in to 39 mm1.5 in per month.
The most challenging month is September, which is hot, with average highs of 30 °C87 °F, very wet (278 mm11 in) and humid (85% relative humidity).
Comfort score: months are ranked by how close they come to an ideal. That means an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
Bangkok weather by month
- January33 °C91 °F / 20 °C68 °F
- February35 °C95 °F / 22 °C72 °F
- March36 °C97 °F / 24 °C76 °F
- April36 °C97 °F / 25 °C78 °F
- May33 °C92 °F / 25 °C78 °F
- June32 °C89 °F / 25 °C77 °F
- July31 °C88 °F / 24 °C75 °F
- August31 °C88 °F / 24 °C75 °F
- September30 °C87 °F / 24 °C75 °F
- October30 °C86 °F / 24 °C74 °F
- November30 °C86 °F / 21 °C71 °F
- December31 °C87 °F / 19 °C67 °F
What to pack for Bangkok
- Wetter months (May–October) — highs 3086 to 33 °C92 °F, lows 2474 to 25 °C78 °F, about 193 mm7.6 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Drier months (November–April) — highs 3086 to 36 °C97 °F, lows 1967 to 25 °C78 °F, about 34 mm1.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Bangkok compares
World Climates covers 22 places in Thailand. By annual mean temperature, Bangkok is the 8th warmest of them. By annual precipitation, it is the 11th wettest. See all of them on the Thailand climate page.
Some places in other countries have a very similar pattern of temperature and rainfall (with seasons shifted for the other hemisphere). The closest matches are Siem Reap (Cambodia, Aw), Battambang (Cambodia, Aw) and Cuiabá (Brazil, Aw).
The same NASA POWER grid cell also contains Mueang Nonthaburi (pop. 254,375), Pak Kret (pop. 190,272), Sai Mai (pop. 188,123), Khlong Sam Wa (pop. 169,489), Chatuchak (pop. 160,906), Nong Chok (pop. 157,138), Bang Kapi (pop. 147,800), Bueng Kum (pop. 145,830), Din Daeng (pop. 130,220), Bang Sue (pop. 125,440), Lat Phrao (pop. 122,182) and Bangkok Noi (pop. 117,793) and 4 more places. Their long-term averages in this dataset are essentially the same as for Bangkok, so they do not have separate pages.
Nearby places
- Climate in Samut Prakan 20 km · 28 °C82 °F · 1,302 mm51 in
- Climate in Khlong Luang 38 km · 28 °C82 °F · 1,361 mm54 in
- Climate in Nakhon Pathom 50 km · 28 °C82 °F · 1,195 mm47 in
- Climate in Ban I Chang 66 km · 28 °C82 °F · 1,147 mm45 in
- Climate in Chon Buri 68 km · 27 °C81 °F · 1,508 mm59 in
- Climate in Si Racha 80 km · 28 °C83 °F · 1,347 mm53 in
- Climate in Pattaya 100 km · 28 °C83 °F · 1,347 mm53 in
- Climate in Kanchanaburi 107 km · 28 °C82 °F · 1,242 mm49 in
Frequently asked questions
What is the warmest month in Bangkok?
April is the warmest month in Bangkok. Its average high is 36 °C (97 °F) and its average low is 25 °C (78 °F).
What is the coldest month in Bangkok?
December is the coldest month. Its average high is 31 °C (87 °F) and its average low is 19 °C (67 °F).
When does it rain the most in Bangkok?
September is the wettest month with about 278 mm (10.9 in) of precipitation. December is the driest with about 10 mm (0.4 in).
What is the best time to visit Bangkok?
Judging by long-term averages, the most comfortable months are November and December.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station. So they can differ from airport records. The gaps are largest on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.