Bangkok · Thailand · 1995–2024 averages
Bangkok is hot all year. December is the least-bad month.
There's no cool season here, only a less-punishing one. The catch: the dry, pleasant months are also the smoggy ones, and the months with the cleanest air are the ones that soak you. Here's the whole year, from three decades of data.
The year at a glance
Tap a month for its full breakdown.
December
bestscore 59.7/100Hot, comfy and dry, with poor air.
- Feels like
- 33°
- hot
- Real temp
- 31°
- warm
- Humidity
- 62%
- comfy
- Rain
- 11mm
- dry
- Cloud cover
- 50%
- bright
- Air quality
- 120
- poor
- Daylight
- 11.3h
- shortish
Month by month, metric by metric
Each strip covers the same twelve months, so you can see where the rain lands and how the air shifts with it.
Feels like
peaks at 40° in April
Real temp
31–34° in the shade across the year
Humidity
62% at its driest, 83% at its most oppressive
Rain
263mm in September, 11mm in December
Cloud cover
37% at its clearest, 91% at its greyest
Air quality
worst in January, cleanest in July
Daylight
11.3h to 12.9h of daylight across the year
Bangkok's air changes sharply through the year
The air is at its worst in January at 156 AQI (unhealthy), and at its cleanest in July at 47 (clean). The dirtiest months here are also the driest.
Every month in full
All twelve months, all seven measures.
| Month | Feels like | Real temp | Humidity | Rain | Cloud cover | Air quality | Daylight |
|---|---|---|---|---|---|---|---|
| January | 34° hot | 31° warm | 65% sticky | 16mm dry | 42% bright | 156 unhealthy | 11.4h shortish |
| February | 36° hot | 32° warm | 69% sticky | 21mm dry | 37% bright | 130 poor | 11.7h shortish |
| March | 38° scorching | 34° hot | 71% sticky | 42mm dryish | 43% bright | 114 poor | 12.1h even |
| April | 40° brutal | 34° hot | 71% sticky | 78mm some rain | 58% mixed | 111 poor | 12.4h even |
| May | 39° scorching | 33° hot | 76% sweaty | 148mm rainy | 80% grey | 101 poor | 12.8h even |
| June | 38° scorching | 32° warm | 77% sweaty | 133mm rainy | 88% overcast | 60 moderate | 12.9h even |
| July | 37° scorching | 32° warm | 78% sweaty | 154mm rainy | 90% overcast | 47 clean | 12.8h even |
| August | 37° scorching | 31° warm | 79% sweaty | 157mm rainy | 91% overcast | 59 moderate | 12.6h even |
| September | 37° scorching | 31° warm | 83% sweaty | 263mm soaking | 89% overcast | 79 moderate | 12.2h even |
| October | 36° hot | 31° warm | 82% sweaty | 202mm soaking | 76% grey | 137 poor | 11.8h shortish |
| November | 35° hot | 31° warm | 72% sticky | 53mm dryish | 59% mixed | 127 poor | 11.5h shortish |
| December | 33° hot | 31° warm | 62% comfy | 11mm dry | 50% bright | 120 poor | 11.3h shortish |
Bangkok weather questions
- What is the best time to visit Bangkok?
- December scores best across temperature, rain, humidity and air quality — 33° feels-like, 11mm of rain and 62% humidity. October is the month to avoid: 202mm of rain and 137 AQI.
- How hot does Bangkok get?
- April is the peak, at 40° feels-like (34° in the shade) — brutal. Even in December it reaches 33°.
- When is the rainy season in Bangkok?
- September is the wettest month at 263mm, and December the driest at just 11mm.
- Is air quality a problem in Bangkok?
- January is the worst month at 156 AQI (unhealthy), and July the best at 47 (clean).
Weather normals from Open-Meteo (ERA5 reanalysis, 1995–2024) and CAMS air quality (2015–2024), licensed CC-BY-4.0. Contains modified Copernicus Climate Change Service information. These are long-run averages, not forecasts — any given year will differ.
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