Climate averages 1991–2020
Hanoi weather
in April.
A hot, wet month: the 6th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Hanoi: daytime highs average 28.8°C and nights cool to about 21.6°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 100 mm of rain on roughly 11 days, which makes April a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 37 min on an average April day.
The nearest other city in this atlas is Tây Hồ (6 km away). In April its highs average 28.6°C, about as warm as Hanoi, with 100 mm of rain.
Among the 136 cities listed in Vietnam, Hanoi ranks joint 93rd of 136 for the warmest April highs and joint 107th of 136 for the driest April (rainfall, lowest first). The mean April high of those 136 cities is 30.6°C; Hanoi is 1.9°C cooler than that mean.
From April to May, average highs rise by 2.3°C to 31.1°C, and monthly rainfall rises from 100 mm to 232 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Tây Hồ in AprilVietnam · 6 kmHigh 28.6°C · Low 21.5°C · 100 mm rain
- Long Bien in AprilVietnam · 6 kmHigh 28.7°C · Low 21.6°C · 87 mm rain
- Bắc Từ Liêm in AprilVietnam · 11 kmHigh 28.7°C · Low 21.5°C · 100 mm rain
- Thuận Thanh in AprilVietnam · 25 kmHigh 28.6°C · Low 21.6°C · 87 mm rain
- Sóc Sơn in AprilVietnam · 26 kmHigh 28.5°C · Low 21.5°C · 96 mm rain
- Phúc Yên in AprilVietnam · 28 kmHigh 28.5°C · Low 21.5°C · 96 mm rain
- Mỹ Hào in AprilVietnam · 28 kmHigh 28.7°C · Low 21.7°C · 87 mm rain
- Bắc Ninh in AprilVietnam · 30 kmHigh 28.7°C · Low 21.5°C · 92 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.