Worst time to visit Bangkok
Some months in Bangkok are clearly tougher for travel — extreme heat, cold, drenching rain, or peak storm season. Here's what to skip.
Months to avoid
| Month | Why |
|---|---|
| January | very hot (32°C / 90°F) |
| February | very hot (33°C / 91°F) |
| March | dangerously hot (avg 35°C / 95°F) |
| April | dangerously hot (avg 36°C / 97°F) |
| May | dangerously hot (avg 34°C / 93°F)very wet (14 rain days) |
| June | very hot (33°C / 91°F)very wet (15 rain days) |
| July | very hot (33°C / 91°F)very wet (15 rain days) |
| August | very hot (32°C / 90°F)very wet (16 rain days) |
| September | very hot (32°C / 90°F)extremely wet (18 rain days) |
| October | very hot (32°C / 90°F)very wet (16 rain days) |
| November | very hot (32°C / 90°F) |
| December | very hot (31°C / 88°F) |
What to expect in the worst months
May. Daytime highs averaging 34°C / 93°F mean outdoor sightseeing between roughly 11 a.m. and 4 p.m. becomes uncomfortable — locals retreat indoors and many smaller shops close in the afternoon. 14 rain days out of 31 means roughly 45% of days see measurable rainfall — plan flexible indoor backups for every outdoor day.
September. Highs in the 32°C range are tolerable in the shade but draining if you're walking all day. 18 rain days out of 30 means roughly 60% of days see measurable rainfall — plan flexible indoor backups for every outdoor day.
March. Daytime highs averaging 35°C / 95°F mean outdoor sightseeing between roughly 11 a.m. and 4 p.m. becomes uncomfortable — locals retreat indoors and many smaller shops close in the afternoon.
Better times to go
No month in Bangkok hits the typical 18–28 °C / low-rain comfort zone — every season has trade-offs. Choose what you can tolerate: heat, cold, rain, or storm risk.
Better in the same region in May
If you're set on Asia in May, these cities have more comfortable conditions in the same window:
If you still have to go — what to bring
- Heat: UPF-rated long-sleeve sun shirt, refillable insulated bottle, electrolyte tablets, lightweight wide-brim hat. Plan indoor activities for 11 a.m.–4 p.m.
- Wet: Real rain shell (not a "water-resistant" jacket), packable umbrella, dry-bag for electronics, quick-dry layers. Pre-book indoor museums and food halls.
Related Bangkok guides
The positive counterpart: which months are great and why.