Climate averages 1991–2020
Bangkok weather
in January.
A hot, fairly dry month: the 8th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Bangkok: daytime highs average 31.0°C and nights cool to about 21.7°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 15 mm of rain on roughly 3 days, which makes January a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 25 min on an average January day.
The nearest other city in this atlas is Watthana (9 km away). In January its highs average 30.8°C, about as warm as Bangkok, with 15 mm of rain.
Among the 46 cities listed in Thailand, Bangkok ranks joint 11th of 46 for the warmest January highs and joint 12th of 46 for the driest January (rainfall, lowest first). The mean January high of those 46 cities is 30.2°C; Bangkok is 0.8°C warmer than that mean.
From January to February, average highs rise by 1.3°C to 32.3°C, and monthly rainfall falls from 15 mm to 13 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Watthana in JanuaryThailand · 9 kmHigh 30.8°C · Low 21.9°C · 15 mm rain
- Chatuchak in JanuaryThailand · 10 kmHigh 30.9°C · Low 21.6°C · 15 mm rain
- Phra Pradaeng in JanuaryThailand · 11 kmHigh 30.8°C · Low 22.1°C · 15 mm rain
- Mueang Nonthaburi in JanuaryThailand · 12 kmHigh 31.3°C · Low 21.5°C · 15 mm rain
- Bang Khae in JanuaryThailand · 12 kmHigh 31.0°C · Low 22.2°C · 15 mm rain
- Thawi Watthana in JanuaryThailand · 14 kmHigh 31.2°C · Low 21.9°C · 15 mm rain
- Thung Khru in JanuaryThailand · 14 kmHigh 30.4°C · Low 22.5°C · 15 mm rain
- Nong Khaem in JanuaryThailand · 17 kmHigh 31.0°C · Low 22.1°C · 15 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.