Climate averages 1991–2020
Hanoi weather
in July.
A hot, very wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Hanoi: daytime highs average 32.3°C and nights cool to about 26.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 259 mm of rain on roughly 20 days, which makes July a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 17 min on an average July day.
The nearest other city in this atlas is Tây Hồ (6 km away). In July its highs average 32.2°C, about as warm as Hanoi, with 259 mm of rain.
Among the 136 cities listed in Vietnam, Hanoi ranks joint 26th of 136 for the warmest July highs and joint 80th of 136 for the driest July (rainfall, lowest first). The mean July high of those 136 cities is 30.8°C; Hanoi is 1.5°C warmer than that mean.
From July to August, average highs fall by 0.8°C to 31.4°C, and monthly rainfall rises from 259 mm to 314 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Hanoi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 19.6°C13.6°C | 13.6°C | 40 | 7.7 | 11.011 h |
| February | 21.7°C15.2°C | 15.2°C | 27 | 6.8 | 11.411 h |
| March | 24.9°C18.1°C | 18.1°C | 52 | 9.6 | 12.012 h |
| April | 28.8°C21.6°C | 21.6°C | 100 | 11.1 | 12.613 h |
| May | 31.1°C24.2°C | 24.2°C | 232 | 17.5 | 13.113 h |
| June | 32.6°C26.0°C | 26.0°C | 226 | 18.3 | 13.413 h |
| July, selected | 32.3°C26.0°C | 26.0°C | 259 | 20.4 | 13.313 h |
| August | 31.4°C25.4°C | 25.4°C | 314 | 22.5 | 12.813 h |
| September | 30.3°C24.1°C | 24.1°C | 226 | 18.7 | 12.312 h |
| October | 28.2°C21.5°C | 21.5°C | 121 | 11.9 | 11.712 h |
| November | 25.0°C17.9°C | 17.9°C | 57 | 7.2 | 11.211 h |
| December | 21.0°C14.1°C | 14.1°C | 33 | 6.6 | 10.911 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Tây Hồ in JulyVietnam · 6 kmHigh 32.2°C · Low 26.0°C · 259 mm rain
- Long Bien in JulyVietnam · 6 kmHigh 32.3°C · Low 26.1°C · 280 mm rain
- Bắc Từ Liêm in JulyVietnam · 11 kmHigh 32.1°C · Low 25.9°C · 259 mm rain
- Thuận Thanh in JulyVietnam · 25 kmHigh 32.4°C · Low 26.3°C · 280 mm rain
- Sóc Sơn in JulyVietnam · 26 kmHigh 32.1°C · Low 25.9°C · 302 mm rain
- Phúc Yên in JulyVietnam · 28 kmHigh 32.1°C · Low 25.9°C · 302 mm rain
- Mỹ Hào in JulyVietnam · 28 kmHigh 32.4°C · Low 26.4°C · 280 mm rain
- Bắc Ninh in JulyVietnam · 30 kmHigh 32.3°C · Low 26.0°C · 309 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Hanoi) is explained once on the Hanoi year overview and on the Sources, method and limits page.
Bắc Từ Liêm and Tây Hồ lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.