Travel Weather Fairy🇻🇳 Vietnam · Hanoi
Hanoi Weather in September
Hot · wet periodSeptember in Hanoi is typically hot by day with warm nights. The 2016–2025 static climate reference used here shows an average high of 30.9°C, an average low of 24.9°C, about 19.0 rainy days and 342.0 mm of monthly precipitation.
Avg high87.6°F 30.9°CAvg low76.8°F 24.9°CRainy days~19.0 daysMonthly rain342.0 mm
🧳 Packing guide
What to wear in Hanoi in September
Packing for Hanoi in September is simplest if you bring light clothing with one thin layer for cooler indoor spaces or evenings. Rain protection should be treated as a core part of the packing list.
Travel takeaway: Keep the schedule flexible enough to move some outdoor time when wetter periods coincide with your travel dates.
🗓️ Travel timing at a glance
Hanoi: 12-month travel weather
Hanoi is cooler and drier in winter, while heat and rainfall rise quickly from late spring. In the climate values used here, June through September combine the highest heat with the heaviest rainfall.
JanCooler · less rainFebCooler · less rainMarSpringAprEarly summerMayHot · rain increasingJunHot · wet periodJulHot · wet periodAugHot · wet periodSepHot · wet periodOctAutumn · still wetNovAutumn · less rainDecCooler · less rain
Monthly labels summarize typical climate patterns for trip planning. Always check the latest forecast and tropical-storm alerts before departure.
✈️ Traveling soon?
Current Hanoi weather and 7-day forecast
When departure is close, the latest forecast matters more than long-term averages.
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Forecast data: MET Norway · CC BY 4.0 · cached by Travel Weather Fairy
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Hanoi weather in other months
Switch months to compare the seasonal pattern.