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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Story Native weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Hanoi has a humid subtropical monsoon climate with four distinct seasons: a mild, dry winter from November to March and a hot, humid summer from May to September. Check the live forecast above for the most accurate current conditions before planning your day.
What is the best time to visit Hanoi for good weather?
The most comfortable months are typically October to November and March to April, when temperatures are moderate and rainfall is lower. If you are checking hanoi weather by month, expect December and January to be the coolest, with average highs around 19–22°C. For those specifically looking up hanoi weather january or hanoi weather december, pack a light jacket as overnight lows can dip to 14°C. Summer months (May to September) bring higher humidity and frequent afternoon downpours.
How do I read the extended forecast for Hanoi?
For trip planning, a hanoi weather forecast 14 days or a weather in hanoi 10 days outlook gives a reliable sense of trends, though accuracy decreases after day seven. Some travellers prefer a hanoi weather forecast 30 days for long-range planning, though seasonal averages are more trustworthy at that range. If you need a hanoi weather 15 days snapshot, view it as a guide rather than a guarantee. All temperatures on this page are reported in hanoi weather celsius.
Does Hanoi ever get cold enough for a coat?
Yes, during December and January, overnight lows can drop to around 10–14°C. A light to medium jacket is advisable if you are out early or late. Daytime temperatures remain pleasant, so layering works best.
Are summer storms in Hanoi dangerous?
Afternoon thunderstorms from May to September are common but usually brief. Flash flooding can occur in low-lying streets. Check the live forecast above and avoid travelling during the heaviest downpours if you are on a motorbike.
How reliable is a 30-day forecast for Hanoi?
Long-range forecasts show broad trends — such as whether a wet or dry spell is likely — rather than exact daily conditions. For packing and itinerary decisions, a shorter weather in hanoi 10 days outlook or even a hanoi weather forecast 14 days is more practical.
Sources
For UK comparisons, see our UK weather hub or the 10 Day Weather Forecast UK for local outlooks.