Climate averages 1991–2020
Rạch Giá weather
in September.
A hot, very wet month: the 10th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Rạch Giá: daytime highs average 29.0°C and nights cool to about 24.9°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 352 mm of rain on roughly 28 days, which makes September a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average September day.
The nearest other city in this atlas is Cờ Đỏ (39 km away). In September its highs average 29.9°C, 0.9°C warmer than Rạch Giá, with 275 mm of rain.
Among the 136 cities listed in Vietnam, Rạch Giá ranks joint 118th of 136 for the warmest September highs and 130th of 136 for the driest September (rainfall, lowest first). The mean September high of those 136 cities is 29.7°C; Rạch Giá is 0.7°C cooler than that mean.
From September to October, average highs rise by 0.6°C to 29.6°C, and monthly rainfall falls from 352 mm to 301 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
Rạch Giá climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.6°C22.5°C | 22.5°C | 22 | 4.5 | 11.612 h |
| February | 31.1°C23.1°C | 23.1°C | 12 | 2.5 | 11.812 h |
| March | 32.7°C24.4°C | 24.4°C | 37 | 6.8 | 12.112 h |
| April | 32.9°C25.4°C | 25.4°C | 87 | 14.5 | 12.312 h |
| May | 31.1°C25.9°C | 25.9°C | 244 | 26.4 | 12.613 h |
| June | 29.5°C25.6°C | 25.6°C | 316 | 27.6 | 12.713 h |
| July | 28.9°C25.2°C | 25.2°C | 344 | 28.6 | 12.613 h |
| August | 28.9°C25.2°C | 25.2°C | 326 | 28.3 | 12.412 h |
| September, selected | 29.0°C24.9°C | 24.9°C | 352 | 27.7 | 12.212 h |
| October | 29.6°C24.3°C | 24.3°C | 301 | 27.8 | 11.912 h |
| November | 29.9°C23.8°C | 23.8°C | 120 | 17.0 | 11.712 h |
| December | 29.3°C23.0°C | 23.0°C | 57 | 9.1 | 11.612 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
- Cờ Đỏ in SeptemberVietnam · 39 kmHigh 29.9°C · Low 24.5°C · 275 mm rain
- Vĩnh Thạnh in SeptemberVietnam · 42 kmHigh 29.9°C · Low 24.5°C · 265 mm rain
- Long Xuyên in SeptemberVietnam · 57 kmHigh 30.1°C · Low 24.6°C · 260 mm rain
- Thốt Nốt in SeptemberVietnam · 57 kmHigh 30.2°C · Low 24.4°C · 265 mm rain
- Ô Môn in SeptemberVietnam · 60 kmHigh 30.0°C · Low 24.3°C · 275 mm rain
- Lai Vung in SeptemberVietnam · 62 kmHigh 30.2°C · Low 24.5°C · 265 mm rain
- Phong Điền (Can Tho City), Vietnam in SeptemberVietnam · 64 kmHigh 29.9°C · Low 24.3°C · 263 mm rain
- Tịnh Biên in SeptemberVietnam · 67 kmHigh 30.3°C · Low 24.6°C · 294 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 Rạch Giá) is explained once on the Rạch Giá year overview and on the Sources, method and limits page.