Bangkok weather by month
2006-2025, 20 years of records · Not a forecast
Bangkok has a hot season from March to mid-May, a rainy season from mid-May to October, and a cool season from October to February. Rain is heaviest in September, and April is the hottest month. The most comfortable time to visit is November to February.
The city is low-lying with weak drainage, so heavy rain can flood streets. Leave extra travel time in the rainy season, and in the hot season a hat and a light T-shirt are the basics.
December to February scored best when warmth and rain days were weighed together. Rain clustered in September (up to 18 rain days) and fell to 1 rain day in December.
Each month in a line
| JanuaryGood | seriously hot, little rain | 33° / 23° |
|---|---|---|
| FebruaryGood | very hot, little rain | 34° / 25° |
| March | seriously hot | 35° / 27° |
| April | very hot | 36° / 27° |
| May | seriously hot | 35° / 27° |
| June | very hot, frequent rain | 34° / 26° |
| July | seriously hot, rain every other day | 34° / 26° |
| August | very hot | 33° / 26° |
| September | seriously hot | 33° / 25° |
| October | seriously hot, rain on every second day | 33° / 25° |
| November | very hot, little rain | 33° / 25° |
| DecemberGood | seriously hot, almost no rain | 32° / 23° |
The 12 months in numbers
Temperatures hardly moved: 36°C in April against 32°C in December.
| Month | High | Low | Rain days | Rainfall | Humidity | Clear days |
|---|---|---|---|---|---|---|
| January | 33° | 23° | 2 days | 26mm | 71% | 10 days |
| February | 34° | 25° | 3 days | 40mm | 74% | 13 days |
| March | 35° | 27° | 3 days | 50mm | 74% | 11 days |
| April | 36° | 27° | 6 days | 102mm | 72% | 6 days |
| May | 35° | 27° | 12 days | 242mm | 75% | 1 day |
| June | 34° | 26° | 13 days | 191mm | 75% | 0 days |
| July | 34° | 26° | 15 days | 204mm | 76% | 0 days |
| August | 33° | 26° | 15 days | 218mm | 76% | 0 days |
| September | 33° | 25° | 18 days | 385mm | 80% | 0 days |
| October | 33° | 25° | 14 days | 294mm | 80% | 2 days |
| November | 33° | 25° | 5 days | 59mm | 74% | 4 days |
| December | 32° | 23° | 1 day | 15mm | 69% | 8 days |
Enter your dates to see how that stretch went in each of the past 20 years.
Common questions
When is the best time to visit Bangkok?
December to February scored best when warmth and rain days were weighed together. Rain clustered in September (up to 18 rain days) and fell to 1 rain day in December.
Which month is driest in Bangkok?
December. Over 2006-2025 it averaged 1 rain day and 15 mm of rain.
Which month is warmest in Bangkok?
April, with highs averaging 36°C and lows 27°C. Temperatures hardly moved: 36°C in April against 32°C in December.