Climate averages 1991–2020
Nam Định weather
in May.
A hot, very wet month: the 4th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Nam Định: daytime highs average 30.9°C and nights cool to about 25.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 196 mm of rain on roughly 16 days, which makes May a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 06 min on an average May day.
The nearest other city in this atlas is Hưng Yên (27 km away). In May its highs average 31.1°C, about as warm as Nam Định, with 206 mm of rain.
Among the 136 cities listed in Vietnam, Nam Định ranks joint 90th of 136 for the warmest May highs and joint 58th of 136 for the driest May (rainfall, lowest first). The mean May high of those 136 cities is 31.2°C; Nam Định is 0.3°C cooler than that mean.
From May to June, average highs rise by 1.8°C to 32.6°C, and monthly rainfall falls from 196 mm to 189 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
Nam Định climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 20.2°C14.3°C | 14.3°C | 27 | 5.5 | 11.011 h |
| February | 21.9°C15.9°C | 15.9°C | 15 | 4.2 | 11.511 h |
| March | 24.7°C18.6°C | 18.6°C | 36 | 6.4 | 12.012 h |
| April | 28.3°C22.1°C | 22.1°C | 63 | 8.7 | 12.613 h |
| May, selected | 30.9°C25.0°C | 25.0°C | 196 | 16.3 | 13.113 h |
| June | 32.6°C27.0°C | 27.0°C | 189 | 16.4 | 13.313 h |
| July | 32.4°C27.0°C | 27.0°C | 246 | 18.4 | 13.213 h |
| August | 31.2°C26.0°C | 26.0°C | 342 | 23.6 | 12.813 h |
| September | 30.0°C24.5°C | 24.5°C | 277 | 20.5 | 12.312 h |
| October | 28.1°C22.0°C | 22.0°C | 142 | 13.6 | 11.712 h |
| November | 25.3°C18.7°C | 18.7°C | 61 | 8.3 | 11.211 h |
| December | 21.4°C15.1°C | 15.1°C | 29 | 6.3 | 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
- Hưng Yên in MayVietnam · 27 kmHigh 31.1°C · Low 24.6°C · 206 mm rain
- Hoa Lư in MayVietnam · 28 kmHigh 31.2°C · Low 24.7°C · 185 mm rain
- Phủ Lý in MayVietnam · 30 kmHigh 31.2°C · Low 24.4°C · 194 mm rain
- Mỹ Hào in MayVietnam · 55 kmHigh 31.1°C · Low 24.5°C · 232 mm rain
- Hải Dương in MayVietnam · 59 kmHigh 30.9°C · Low 24.5°C · 244 mm rain
- Kiến An in MayVietnam · 62 kmHigh 30.0°C · Low 24.9°C · 207 mm rain
- Thuận Thanh in MayVietnam · 69 kmHigh 31.0°C · Low 24.4°C · 232 mm rain
- Haiphong in MayVietnam · 71 kmHigh 30.1°C · Low 24.7°C · 207 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 Nam Định) is explained once on the Nam Định year overview and on the Sources, method and limits page.