Climate averages 1991–2020
Lạng Sơn 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 Lạng Sơn: daytime highs average 29.0°C and nights cool to about 22.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 220 mm of rain on roughly 21 days, which makes May a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 10 min on an average May day.
The nearest other city in this atlas is Pingxiang, China (27 km away). In May its highs average 28.4°C, 0.6°C cooler than Lạng Sơn, with 203 mm of rain.
Among the 136 cities listed in Vietnam, Lạng Sơn ranks joint 127th of 136 for the warmest May highs and joint 95th of 136 for the driest May (rainfall, lowest first). The mean May high of those 136 cities is 31.2°C; Lạng Sơn is 2.2°C cooler than that mean.
From May to June, average highs rise by 1.2°C to 30.3°C, and monthly rainfall rises from 220 mm to 257 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
Lạng Sơn climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.2°C10.8°C | 10.8°C | 57 | 11.2 | 11.011 h |
| February | 19.4°C12.6°C | 12.6°C | 44 | 10.2 | 11.411 h |
| March | 22.8°C15.9°C | 15.9°C | 79 | 14.4 | 12.012 h |
| April | 26.8°C19.8°C | 19.8°C | 97 | 14.8 | 12.613 h |
| May, selected | 29.0°C22.6°C | 22.6°C | 220 | 21.2 | 13.213 h |
| June | 30.3°C24.4°C | 24.4°C | 257 | 23.6 | 13.413 h |
| July | 30.3°C24.6°C | 24.6°C | 270 | 24.9 | 13.313 h |
| August | 30.0°C24.1°C | 24.1°C | 285 | 25.2 | 12.913 h |
| September | 28.8°C22.6°C | 22.6°C | 164 | 18.2 | 12.312 h |
| October | 26.5°C19.6°C | 19.6°C | 75 | 10.8 | 11.712 h |
| November | 23.2°C15.9°C | 15.9°C | 50 | 7.9 | 11.111 h |
| December | 18.8°C11.8°C | 11.8°C | 45 | 8.2 | 10.811 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
- Pingxiang, China in MayChina · 27 kmHigh 28.4°C · Low 21.8°C · 203 mm rain
- Chũ in MayVietnam · 57 kmHigh 30.2°C · Low 23.6°C · 254 mm rain
- Chongzuo in MayChina · 86 kmHigh 30.1°C · Low 22.8°C · 175 mm rain
- Bắc Giang in MayVietnam · 87 kmHigh 30.6°C · Low 23.9°C · 261 mm rain
- Thị Trấn Đông Triều in MayVietnam · 89 kmHigh 30.7°C · Low 24.4°C · 241 mm rain
- Thị Trấn Mạo Khê in MayVietnam · 90 kmHigh 30.7°C · Low 24.5°C · 241 mm rain
- Việt Yên in MayVietnam · 92 kmHigh 30.8°C · Low 24.0°C · 261 mm rain
- Cung Kiệm in MayVietnam · 97 kmHigh 30.9°C · Low 24.2°C · 261 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 Lạng Sơn) is explained once on the Lạng Sơn year overview and on the Sources, method and limits page.