Climate averages 1991–2020
Thakhèk weather
in September.
A hot, very wet month: the joint 8th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Thakhèk: daytime highs average 29.4°C and nights cool to about 23.1°C. By daytime temperature it is the joint 8th warmest of the 12 months.
Expect about 317 mm of rain on roughly 25 days, which makes September a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 15 min on an average September day.
The nearest other city in this atlas is Sakon Nakhon (78 km away). In September its highs average 29.7°C, about as warm as Thakhèk, with 268 mm of rain.
Among the 4 cities listed in Laos, Thakhèk ranks joint 2nd of 4 for the warmest September highs and 3rd of 4 for the driest September (rainfall, lowest first). The mean September high of those 4 cities is 29.3°C; Thakhèk is 0.1°C warmer than that mean.
From September to October, average highs rise by 0.3°C to 29.7°C, and monthly rainfall falls from 317 mm to 111 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
Thakhèk climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.2°C16.0°C | 16.0°C | 6.0 | 1.5 | 11.211 h |
| February | 30.1°C17.9°C | 17.9°C | 13 | 2.6 | 11.612 h |
| March | 32.4°C21.0°C | 21.0°C | 34 | 5.5 | 12.012 h |
| April | 33.3°C23.4°C | 23.4°C | 69 | 11.5 | 12.513 h |
| May | 31.5°C24.2°C | 24.2°C | 253 | 23.7 | 12.913 h |
| June | 30.2°C24.2°C | 24.2°C | 378 | 27.6 | 13.213 h |
| July | 29.5°C23.9°C | 23.9°C | 490 | 29.4 | 13.113 h |
| August | 29.2°C23.6°C | 23.6°C | 493 | 29.9 | 12.713 h |
| September, selected | 29.4°C23.1°C | 23.1°C | 317 | 24.7 | 12.212 h |
| October | 29.7°C21.4°C | 21.4°C | 111 | 11.4 | 11.812 h |
| November | 29.4°C19.1°C | 19.1°C | 20 | 2.6 | 11.311 h |
| December | 27.7°C16.3°C | 16.3°C | 5.8 | 1.2 | 11.111 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
- Sakon Nakhon in SeptemberThailand · 78 kmHigh 29.7°C · Low 23.7°C · 268 mm rain
- Savannakhet in SeptemberLaos · 94 kmHigh 29.4°C · Low 23.3°C · 257 mm rain
- Hà Tĩnh in SeptemberVietnam · 154 kmHigh 29.3°C · Low 24.6°C · 391 mm rain
- Vinh in SeptemberVietnam · 167 kmHigh 29.9°C · Low 25.0°C · 330 mm rain
- Kỳ Anh in SeptemberVietnam · 172 kmHigh 29.8°C · Low 25.4°C · 312 mm rain
- Ba Đồn in SeptemberVietnam · 173 kmHigh 29.6°C · Low 25.1°C · 366 mm rain
- Đồng Hới in SeptemberVietnam · 190 kmHigh 29.4°C · Low 25.5°C · 345 mm rain
- Udon Thani in SeptemberThailand · 217 kmHigh 29.9°C · Low 23.7°C · 276 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 Thakhèk) is explained once on the Thakhèk year overview and on the Sources, method and limits page.