Bangkok monthly weather and climate
Bangkok · Central Thailand · capital
Bangkok has little rain during the November–February dry season, but heat and air pollution increase from February. April brings particularly intense afternoon heat. During the May–October rainy season, frequent showers and flooded roads can affect plans for getting around the city.
10 mmJan10 mmFeb50 mmMar110 mmApr180 mmMay180 mmJun180 mmJul170 mmAug220 mmSep190 mmOct40 mmNov10 mmDec
When are the dry and rainy seasons?
- Best time to visit
- Nov–Feb
- Dry season
- Nov–Feb
- Rainy season
- May–Oct
- Hottest month
- Apr (35°C)
- Wettest month
- Sep (220 mm)
Monthly weather and climate
Compare hotter and wetter months in the table below. These are historical climate averages: they are not a forecast for your travel dates and do not tell you whether swimming will be possible.
| Month | Travel rating | Temperature | Rainfall | Rainy days | Humidity | Sunshine | Sea conditions |
|---|---|---|---|---|---|---|---|
| January | ++ Very good | 22~32°C | 10 mm | 1 d | 70% | 9 h | Not applicable |
| February | ++ Very good | 24~33°C | 10 mm | 2 d | 72% | 8 h | Not applicable |
| March | ++ Very good | 25~34°C | 50 mm | 4 d | 71% | 9 h | Not applicable |
| April | + Good | 26~35°C | 110 mm | 7 d | 73% | 8 h | Not applicable |
| May | ± Average | 26~34°C | 180 mm | 15 d | 74% | 8 h | Not applicable |
| June | ± Average | 26~33°C | 180 mm | 15 d | 75% | 6 h | Not applicable |
| July | ± Average | 25~32°C | 180 mm | 16 d | 75% | 5 h | Not applicable |
| August | ± Average | 25~32°C | 170 mm | 17 d | 75% | 5 h | Not applicable |
| September | - Not recommended | 25~32°C | 220 mm | 19 d | 79% | 5 h | Not applicable |
| October | ± Average | 24~31°C | 190 mm | 16 d | 79% | 6 h | Not applicable |
| November | ++ Very good | 23~31°C | 40 mm | 5 d | 72% | 8 h | Not applicable |
| December | ++ Very good | 22~31°C | 10 mm | 1 d | 67% | 9 h | Not applicable |
| Month | Weather and travel advice |
|---|---|
| January | This is the coolest and driest month. Conditions are pleasant, with very little smog at this stage of the season. |
| February | Temperatures rise while dry weather continues. Air pollution and fine particulate matter also increase. |
| March | The weather feels hot and oppressive. The first showers can bring some relief from the heat. |
| April | Heat is at its strongest, especially in the afternoon. This month coincides with the Songkran water festival. |
| May | The rainy season begins, with more afternoon showers. Temperatures fall, but humidity increases. |
| June | The rainy season brings short, heavy showers each day. |
| July | Conditions remain similar to June, with regular rain and hot, humid weather. |
| August | Rain continues, and localised flooding is possible in parts of the city. |
| September | This is the wettest month and the period with the greatest likelihood of flooded roads. |
| October | Rain gradually decreases. The water level in the Chao Phraya River can nevertheless rise after heavy rainfall. |
| November | Clearer, more pleasant weather accompanies the transition to the dry season. |
| December | Low rainfall and pleasant weather make this a busy high-season month. |