Worst time to visit Hanoi
Some months in Hanoi are clearly tougher for travel — extreme heat, cold, drenching rain, or peak storm season. Here's what to skip.
Months to avoid
| Month | Why |
|---|---|
| March | very wet (15 rain days) |
| May | very hot (32°C / 90°F)very wet (14 rain days) |
| June | very hot (33°C / 91°F)very wet (14 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)peak typhoon season |
| September | very hot (31°C / 88°F)peak typhoon season |
| October | peak typhoon season |
What to expect in the worst months
August. Highs in the 32°C range are tolerable in the shade but draining if you're walking all day. 16 rain days out of 31 means roughly 52% of days see measurable rainfall — plan flexible indoor backups for every outdoor day. This is peak typhoon season — disruptive weather can shut down flights, boats, and outdoor activities at short notice.
September. Highs in the 31°C range are tolerable in the shade but draining if you're walking all day. This is peak typhoon season — disruptive weather can shut down flights, boats, and outdoor activities at short notice.
May. Highs in the 32°C range are tolerable in the shade but draining if you're walking all day. 14 rain days out of 31 means roughly 45% of days see measurable rainfall — plan flexible indoor backups for every outdoor day.
Better times to go
Better months: January (20°C, 8 rain days) · November (26°C, 6 rain days) · December (22°C, 6 rain days)
Better in the same region in August
If you're set on Asia in August, 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.
- Storm season: Buy travel insurance with weather-disruption coverage, build 24–48 h flexibility into your itinerary, and follow the local meteorological agency on social.
Related Hanoi guides
The positive counterpart: which months are great and why.