Hanoi · Month comparison
August vs April
April ranks #1 overall vs August at #10. The best weather month — warm, sunny, low crowds, and the Old Quarter at its most photogenic.
August
#10 of 12 months
Avoid
The rainiest month — 318mm of rain and overcast skies, but the Mid-Autumn Festival preparations begin in the Old Quarter.
- ↑Mid-Autumn Festival (Tet Trung Thu) preparations begin in August — Hang Ma Street starts filling with mooncakes, lanterns, and traditional toys; a preview of the Old Quarter's most colourful transformation
- ↑Despite the heavy rain, Hanoi's indoor culture is superb: the Vietnam Museum of Ethnology is one of Southeast Asia's finest, and the city's café scene is the best reason to be stuck indoors anywhere in the region
April
#1 of 12 months
Best match
The best weather month — warm, sunny, low crowds, and the Old Quarter at its most photogenic.
- ↑April is the joint-best weather month in Hanoi: 26°C, 5.5 sunshine hours, and light rather than heavy rain — the Old Quarter is comfortable to explore for a full day without the humidity and heat of summer
- ↑Crowds are at their annual low outside the peak seasons; the Ngoc Son Temple at Hoan Kiem Lake and the Temple of Literature can be visited without congestion
| Factor | August | April |
|---|---|---|
| Weather score | 2 | 8 |
| Value score | 7 | 7 |
| Crowd score | 6 | 7 |
| Events score | 5 | 5 |
| Atmosphere | 6 | 7 |
| Avg high temp | 32°C | 26°C |
| Monthly rain | 318mm | 88mm |
| Daily sunshine | 5.5hrs | 5.5hrs |
August trade-offs
- ↓318mm of rain is Hanoi's wettest month of all — daily deluges can last for hours, flooding streets that drain slowly; choosing accommodation on higher ground or with covered access matters
- ↓Sunshine hours drop to 5.5 — overcast skies dominate the morning before the daily rain arrives; the blue-sky Hanoi of autumn and spring photographs is absent
- ↓The heat (32°C / 84% humidity) remains at its summer maximum even as the rain intensifies — the combination of wet and hot is Hanoi at its most challenging
April trade-offs
- ↓Rainfall increases to 88mm — light but present; afternoon showers are possible; carry a small umbrella or poncho
- ↓April is starting to become more popular as word of the good weather spreads; hotels fill faster than in February-March and prices begin edging upward
- ↓The heat is building toward summer levels by late April — daytime sightseeing between 11am and 3pm can already feel warm
Scores compare months within Hanoi. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →