Climate averages 1991–2020
Bangkok weather
in May.
A hot, wet month: the 3rd warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Bangkok: daytime highs average 33.4°C and nights cool to about 26.5°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 130 mm of rain on roughly 20 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 45 min on an average May day.
The nearest other city in this atlas is Watthana (9 km away). In May its highs average 33.0°C, about as warm as Bangkok, with 130 mm of rain.
Among the 46 cities listed in Thailand, Bangkok ranks joint 9th of 46 for the warmest May highs and joint 9th of 46 for the driest May (rainfall, lowest first). The mean May high of those 46 cities is 32.7°C; Bangkok is 0.7°C warmer than that mean.
From May to June, average highs fall by 1.1°C to 32.3°C, and monthly rainfall falls from 130 mm to 127 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bangkok climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.0°C21.7°C | 21.7°C | 15 | 2.9 | 11.411 h |
| February | 32.3°C23.4°C | 23.4°C | 13 | 2.8 | 11.712 h |
| March | 33.6°C25.4°C | 25.4°C | 41 | 6.3 | 12.012 h |
| April | 34.6°C26.6°C | 26.6°C | 68 | 10.3 | 12.412 h |
| May, selected | 33.4°C26.5°C | 26.5°C | 130 | 20.0 | 12.813 h |
| June | 32.3°C26.0°C | 26.0°C | 127 | 21.8 | 12.913 h |
| July | 31.7°C25.6°C | 25.6°C | 134 | 22.9 | 12.913 h |
| August | 31.4°C25.4°C | 25.4°C | 144 | 23.6 | 12.613 h |
| September | 30.9°C24.9°C | 24.9°C | 237 | 25.3 | 12.212 h |
| October | 30.4°C24.1°C | 24.1°C | 191 | 20.7 | 11.812 h |
| November | 30.9°C23.1°C | 23.1°C | 42 | 6.4 | 11.512 h |
| December | 30.6°C21.7°C | 21.7°C | 9.5 | 1.7 | 11.311 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Watthana in MayThailand · 9 kmHigh 33.0°C · Low 26.6°C · 130 mm rain
- Chatuchak in MayThailand · 10 kmHigh 33.2°C · Low 26.4°C · 130 mm rain
- Phra Pradaeng in MayThailand · 11 kmHigh 33.1°C · Low 26.8°C · 130 mm rain
- Mueang Nonthaburi in MayThailand · 12 kmHigh 33.7°C · Low 26.3°C · 130 mm rain
- Bang Khae in MayThailand · 12 kmHigh 33.4°C · Low 26.9°C · 130 mm rain
- Thawi Watthana in MayThailand · 14 kmHigh 33.7°C · Low 26.6°C · 130 mm rain
- Thung Khru in MayThailand · 14 kmHigh 32.7°C · Low 27.0°C · 130 mm rain
- Nong Khaem in MayThailand · 17 kmHigh 33.4°C · Low 26.7°C · 144 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bangkok) is explained once on the Bangkok year overview and on the Sources, method and limits page.
Mueang Nonthaburi, Phra Pradaeng and Bang Khae lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.