Climate in Bangkok — Annual Weather Overview
Bangkok has a tropical climate — hot and humid year-round with a distinct wet season. The hottest month is April (average high 33.5°C) and the coolest is October (30.3°C). Temperatures are consistent year-round, with highs ranging only 3.2°C between the warmest and coolest months. Annual rainfall totals around 1704mm. September is the wettest month at 346.9mm, while January averages just 14.5mm. Average daily sunshine is 9.5 hours.
**Spring (March, April, May):** average highs 33.4°C, 279mm rain. **Summer (June, July, August):** average highs 32.2°C, 598mm rain. **Autumn (September, October, November):** average highs 30.7°C, 745mm rain. **Winter (December, January, February):** average highs 31.6°C, 82mm rain.
Bangkok — Monthly Temperatures
Bangkok — Monthly Rainfall
✅ Best months to visit
All year
ℹ️ No months to avoid
Weather in Bangkok stays reasonable all year.
Bangkok weather by month
| Month | High | Low | Rain | Sun/day | Rainy days | Rating |
|---|---|---|---|---|---|---|
| January | 31.7°C | 22.0°C | 14.5mm | 10.7h | 2 | 10/10 |
| February | 32.3°C | 23.3°C | 50.2mm | 10.5h | 6 | 10/10 |
| March | 33.3°C | 25.7°C | 45.3mm | 10.7h | 8 | 10/10 |
| April | 33.5°C | 26.4°C | 103.1mm | 10.5h | 14 | 9/10 |
| May | 33.5°C | 26.6°C | 130.3mm | 10.1h | 19 | 9/10 |
| June | 33.0°C | 26.2°C | 150.0mm | 9.5h | 23 | 9/10 |
| July | 31.9°C | 25.7°C | 218.0mm | 8.4h | 26 | 8/10 |
| August | 31.6°C | 25.5°C | 230.5mm | 7.9h | 27 | 8/10 |
| September | 30.8°C | 25.1°C | 346.9mm | 7.5h | 28 | 8/10 |
| October | 30.3°C | 24.1°C | 307.7mm | 7.9h | 22 | 8/10 |
| November | 31.0°C | 23.6°C | 90.9mm | 9.6h | 12 | 10/10 |
| December | 30.8°C | 21.9°C | 16.9mm | 10.5h | 4 | 10/10 |
For the full verdict on when to go, see the best time to visit Bangkok and the Bangkok rainy season guide. Seasonal breakdowns: spring, summer, autumn and winter.
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Frequently Asked Questions
What type of climate does Bangkok have?
Bangkok has a tropical climate — hot and humid year-round with a distinct wet season. Average highs range from 30.3°C in October to 33.5°C in April.
What is the hottest month in Bangkok?
April is the hottest month in Bangkok, with average highs of 33.5°C and lows of 26.4°C.
What is the coldest month in Bangkok?
October is the coolest month, with average highs of 30.3°C and lows of 21.9°C.
What is the wettest month in Bangkok?
September is the wettest month, averaging 346.9mm of rainfall over around 28 rainy days.
When is rainy season in Bangkok?
Rainy season in Bangkok runs April to October, when rainfall is significantly higher than the rest of the year. Full rainy season guide →
How much rain does Bangkok get per year?
Bangkok receives around 1704mm of rain per year. The driest month is January (14.5mm).
When is the best time to visit Bangkok?
The best time to visit Bangkok is All year. See the full month-by-month guide →
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For the packing side of things, our sister site has a ready-made checklist: Bangkok packing list at 247PackingList. For currency, language and country facts see the Thailand guide at 247CountryInfo. Some travellers fund a longer stay in Bangkok by teaching English along the way — a TEFL certificate is usually all it takes.
Trip essentials for Bangkok
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More Bangkok travel essentials
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.