Climate averages 1991–2020
Haiphong weather
in May.
A hot, very wet month: the 4th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Haiphong: daytime highs average 30.1°C and nights cool to about 24.7°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 207 mm of rain on roughly 17 days, which makes May a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 07 min on an average May day.
The nearest other city in this atlas is Kiến An (9 km away). In May its highs average 30.0°C, about as warm as Haiphong, with 207 mm of rain.
Among the 136 cities listed in Vietnam, Haiphong ranks 117th of 136 for the warmest May highs and joint 79th of 136 for the driest May (rainfall, lowest first). The mean May high of those 136 cities is 31.2°C; Haiphong is 1.0°C cooler than that mean.
From May to June, average highs rise by 1.5°C to 31.6°C, and monthly rainfall rises from 207 mm to 214 mm.
The annual picture
May 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
Haiphong climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 19.6°C13.9°C | 13.9°C | 37 | 7.0 | 11.011 h |
| February | 21.2°C15.4°C | 15.4°C | 22 | 5.6 | 11.411 h |
| March | 24.0°C18.3°C | 18.3°C | 39 | 7.6 | 12.012 h |
| April | 27.6°C21.8°C | 21.8°C | 57 | 8.4 | 12.613 h |
| May, selected | 30.1°C24.7°C | 24.7°C | 207 | 16.9 | 13.113 h |
| June | 31.6°C26.6°C | 26.6°C | 214 | 18.3 | 13.413 h |
| July | 31.5°C26.6°C | 26.6°C | 281 | 20.1 | 13.313 h |
| August | 30.8°C25.8°C | 25.8°C | 381 | 24.4 | 12.813 h |
| September | 29.9°C24.4°C | 24.4°C | 290 | 20.0 | 12.312 h |
| October | 28.1°C21.9°C | 21.9°C | 133 | 12.4 | 11.712 h |
| November | 25.1°C18.5°C | 18.5°C | 60 | 8.2 | 11.211 h |
| December | 21.1°C14.7°C | 14.7°C | 37 | 6.5 | 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
May in nearby cities
- Kiến An in MayVietnam · 9 kmHigh 30.0°C · Low 24.9°C · 207 mm rain
- Thị Trấn Mạo Khê in MayVietnam · 24 kmHigh 30.7°C · Low 24.5°C · 241 mm rain
- Thị Trấn Đông Triều in MayVietnam · 30 kmHigh 30.7°C · Low 24.4°C · 241 mm rain
- Hải Dương in MayVietnam · 37 kmHigh 30.9°C · Low 24.5°C · 244 mm rain
- Hạ Long in MayVietnam · 42 kmHigh 29.3°C · Low 24.8°C · 219 mm rain
- Chí Linh in MayVietnam · 44 kmHigh 30.9°C · Low 24.3°C · 244 mm rain
- Chũ in MayVietnam · 58 kmHigh 30.2°C · Low 23.6°C · 254 mm rain
- Mỹ Hào in MayVietnam · 63 kmHigh 31.1°C · Low 24.5°C · 232 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 Haiphong) is explained once on the Haiphong year overview and on the Sources, method and limits page.
Kiến An lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.