Climate averages 1991–2020
Long Xuyên weather
in September.
A hot, very wet month: the joint 9th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Long Xuyên: daytime highs average 30.1°C and nights cool to about 24.6°C. By daytime temperature it is the joint 9th warmest of the 12 months.
Expect about 260 mm of rain on roughly 28 days, which makes September a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average September day.
The nearest other city in this atlas is Thốt Nốt (17 km away). In September its highs average 30.2°C, about as warm as Long Xuyên, with 265 mm of rain.
Among the 136 cities listed in Vietnam, Long Xuyên ranks joint 57th of 136 for the warmest September highs and 60th of 136 for the driest September (rainfall, lowest first). The mean September high of those 136 cities is 29.7°C; Long Xuyên is 0.5°C warmer than that mean.
From September to October, average highs rise by 0.2°C to 30.3°C, and monthly rainfall rises from 260 mm to 281 mm.
The annual picture
September 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
Long Xuyên climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.1°C22.1°C | 22.1°C | 25 | 4.4 | 11.612 h |
| February | 31.5°C22.6°C | 22.6°C | 14 | 1.7 | 11.812 h |
| March | 33.3°C24.1°C | 24.1°C | 34 | 5.7 | 12.112 h |
| April | 33.6°C25.2°C | 25.2°C | 81 | 12.7 | 12.412 h |
| May | 32.0°C25.5°C | 25.5°C | 175 | 23.9 | 12.613 h |
| June | 30.4°C25.1°C | 25.1°C | 207 | 26.3 | 12.713 h |
| July | 30.1°C24.8°C | 24.8°C | 218 | 27.8 | 12.713 h |
| August | 30.2°C24.8°C | 24.8°C | 220 | 28.1 | 12.512 h |
| September, selected | 30.1°C24.6°C | 24.6°C | 260 | 27.9 | 12.212 h |
| October | 30.3°C23.9°C | 23.9°C | 281 | 26.9 | 11.912 h |
| November | 30.4°C23.5°C | 23.5°C | 138 | 16.2 | 11.712 h |
| December | 29.9°C22.6°C | 22.6°C | 57 | 8.5 | 11.512 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
September in nearby cities
- Thốt Nốt in SeptemberVietnam · 17 kmHigh 30.2°C · Low 24.4°C · 265 mm rain
- Vĩnh Thạnh in SeptemberVietnam · 19 kmHigh 29.9°C · Low 24.5°C · 265 mm rain
- Lai Vung in SeptemberVietnam · 23 kmHigh 30.2°C · Low 24.5°C · 265 mm rain
- Cao Lãnh in SeptemberVietnam · 23 kmHigh 30.4°C · Low 24.5°C · 277 mm rain
- Cờ Đỏ in SeptemberVietnam · 33 kmHigh 29.9°C · Low 24.5°C · 275 mm rain
- Quận Đức Thịnh in SeptemberVietnam · 34 kmHigh 30.3°C · Low 24.4°C · 267 mm rain
- Sa Dec in SeptemberVietnam · 37 kmHigh 30.2°C · Low 24.4°C · 267 mm rain
- Ô Môn in SeptemberVietnam · 37 kmHigh 30.0°C · Low 24.3°C · 275 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 Long Xuyên) is explained once on the Long Xuyên year overview and on the Sources, method and limits page.