Bangkok: monthly weather and climate
Bangkok · Central Thailand · capital
Bangkok receives little rain during the dry season from November to February, but heat and air pollution increase from February. April is especially hot in the afternoons. Frequent showers during the May–October rainy season can flood roads, so rain may 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 the table below to see which months are hotter or wetter. These are historical climate averages; they do not provide a forecast for your travel dates or tell you whether swimming will be permitted or safe.
| Month | Travel rating | Temperature | Rainfall | Rainy days | Humidity | Sunshine hours | Sea conditions |
|---|---|---|---|---|---|---|---|
| January | ++ Very good | 22~32°C | 10 mm | 1 days | 70% | 9 hours | Not applicable |
| February | ++ Very good | 24~33°C | 10 mm | 2 days | 72% | 8 hours | Not applicable |
| March | ++ Very good | 25~34°C | 50 mm | 4 days | 71% | 9 hours | Not applicable |
| April | + Good | 26~35°C | 110 mm | 7 days | 73% | 8 hours | Not applicable |
| May | ± Average | 26~34°C | 180 mm | 15 days | 74% | 8 hours | Not applicable |
| June | ± Average | 26~33°C | 180 mm | 15 days | 75% | 6 hours | Not applicable |
| July | ± Average | 25~32°C | 180 mm | 16 days | 75% | 5 hours | Not applicable |
| August | ± Average | 25~32°C | 170 mm | 17 days | 75% | 5 hours | Not applicable |
| September | - Not recommended | 25~32°C | 220 mm | 19 days | 79% | 5 hours | Not applicable |
| October | ± Average | 24~31°C | 190 mm | 16 days | 79% | 6 hours | Not applicable |
| November | ++ Very good | 23~31°C | 40 mm | 5 days | 72% | 8 hours | Not applicable |
| December | ++ Very good | 22~31°C | 10 mm | 1 days | 67% | 9 hours | 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, however, increase. |
| March | The weather feels hot and stifling. The first showers can bring some relief from the heat. |
| April | This is the hottest month and coincides with the Songkran water festival. Afternoon heat is particularly intense. |
| May | The rainy season begins, bringing more afternoon showers. Temperatures fall, but humidity rises. |
| June | The rainy season brings short, heavy showers every day. |
| July | Conditions are similar to June, with steady rain and hot, humid weather. |
| August | Continued rain can cause localised flooding in parts of the city. |
| September | This is the wettest month, with the highest chance of flooded roads. |
| October | Rain gradually decreases. However, water levels in the Chao Phraya River can rise after heavy rainfall. |
| November | The weather becomes clearer and more pleasant as the dry season approaches. |
| December | Low rainfall and pleasant weather draw many visitors during the peak tourist season. |