The short answer
When to go to Bangkok
The best window is November to February, when rain has stopped, humidity eases and daytime highs sit around 32 to 34 C. March to May is very hot, with April the peak, and the rainy season from May to October brings heavy afternoon downpours, with September the wettest month. For older travellers, December and January are easiest: start temples at opening time, rest in air-conditioned places at midday and use the river boat or BTS instead of road traffic.
Month by month
Bangkok weather by month
| Month | High | Low | Rain | Verdict | What to expect |
|---|---|---|---|---|---|
| January | 33°C | 23°C | 24 mm | Dry, the coolest stretch of the year | |
| February | 34°C | 25°C | 21 mm | Warming up but still dry | |
| March | 35°C | 26°C | 51 mm | Hot; start sightseeing at opening time | |
| April | 36°C | 27°C | 93 mm | The hottest month; hard on older visitors | |
| May | 35°C | 27°C | 217 mm | Rains begin; hot and humid between showers | |
| June | 34°C | 26°C | 199 mm | Wet season; afternoon downpours | |
| July | 34°C | 26°C | 190 mm | Frequent rain, still fewer crowds | |
| August | 33°C | 26°C | 227 mm | Heavy showers; street flooding possible | |
| September | 33°C | 25°C | 336 mm | The wettest month; flooding risk | |
| October | 33°C | 25°C | 289 mm | Very wet, easing towards the month end | |
| November | 33°C | 25°C | 45 mm | Rain stops and humidity eases | |
| December | 32°C | 23°C | 12 mm | Dry and comfortable, but the busiest month |
Temperatures and rainfall are long-term monthly averages. Check the forecast a few days before you travel.
Seasons at a glance
Bangkok seasons for families and seniors
The easiest months: January and December
- January: Dry, the coolest stretch of the year
- December: Dry and comfortable, but the busiest month
Good, with small trade-offs: February and November
- February: Warming up but still dry
- November: Rain stops and humidity eases
Possible, with planning: March, May, June, July and August
- March: Hot; start sightseeing at opening time
- May: Rains begin; hot and humid between showers
- June: Wet season; afternoon downpours
- July: Frequent rain, still fewer crowds
- August: Heavy showers; street flooding possible
Best avoided with parents or children: April, September and October
- April: The hottest month; hard on older visitors
- September: The wettest month; flooding risk
- October: Very wet, easing towards the month end
Useful answers
Best time to visit Bangkok: FAQs
What is the best month to visit Bangkok?
January and December are the best months to visit Bangkok, with February and November also good. The best window is November to February, when rain has stopped, humidity eases and daytime highs sit around 32 to 34 C. March to May is very hot, with April the peak, and the rainy season from May to October brings heavy afternoon downpours, with September the wettest month. For older travellers, December and January are easiest: start temples at opening time, rest in air-conditioned places at midday and use the river boat or BTS instead of road traffic.
Which months should I avoid in Bangkok with elderly parents?
April, September and October are the months to avoid with older travellers. The hottest month; hard on older visitors The wettest month; flooding risk
When does it rain most in Bangkok?
September is the wettest month, with about 336 mm of rain on average. The hottest month is April, with average highs around 36°C.