Climate averages 1991–2020
Si Maha Phot weather
in September.
A hot, very wet month: one of the coolest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Si Maha Phot: daytime highs average 29.9°C and nights cool to about 23.7°C. By daytime temperature it is one of the coolest months of the year.
Expect about 308 mm of rain on roughly 27 days, which makes September a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 13 min on an average September day.
The nearest other city in this atlas is Kabin Buri (22 km away). In September its highs average 29.7°C, about as warm as Si Maha Phot, with 283 mm of rain.
Among the 46 cities listed in Thailand, Si Maha Phot ranks joint 33rd of 46 for the warmest September highs and 44th of 46 for the driest September (rainfall, lowest first). The mean September high of those 46 cities is 30.3°C; Si Maha Phot is 0.5°C cooler than that mean.
From September to October, average highs stay level at 29.9°C, and monthly rainfall falls from 308 mm to 148 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
Si Maha Phot climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.9°C20.4°C | 20.4°C | 9.8 | 2.2 | 11.411 h |
| February | 32.4°C21.7°C | 21.7°C | 14 | 3.0 | 11.712 h |
| March | 33.6°C23.6°C | 23.6°C | 41 | 8.5 | 12.012 h |
| April | 34.2°C24.8°C | 24.8°C | 70 | 13.2 | 12.412 h |
| May | 32.4°C24.9°C | 24.9°C | 209 | 24.0 | 12.813 h |
| June | 30.9°C24.5°C | 24.5°C | 267 | 26.5 | 12.913 h |
| July | 30.3°C24.2°C | 24.2°C | 281 | 27.5 | 12.913 h |
| August | 30.1°C24.1°C | 24.1°C | 300 | 28.2 | 12.613 h |
| September, selected | 29.9°C23.7°C | 23.7°C | 308 | 27.3 | 12.212 h |
| October | 29.9°C23.0°C | 23.0°C | 148 | 18.7 | 11.812 h |
| November | 30.5°C21.9°C | 21.9°C | 24 | 4.3 | 11.511 h |
| December | 30.2°C20.5°C | 20.5°C | 4.9 | 1.2 | 11.311 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
- Kabin Buri in SeptemberThailand · 22 kmHigh 29.7°C · Low 23.6°C · 283 mm rain
- Nong Chok in SeptemberThailand · 71 kmHigh 30.9°C · Low 24.6°C · 254 mm rain
- Lat Krabang in SeptemberThailand · 83 kmHigh 30.8°C · Low 25.0°C · 254 mm rain
- Khlong Sam Wa in SeptemberThailand · 84 kmHigh 31.0°C · Low 24.7°C · 254 mm rain
- Chon Buri in SeptemberThailand · 88 kmHigh 30.4°C · Low 25.0°C · 232 mm rain
- Bueng Kum in SeptemberThailand · 93 kmHigh 30.8°C · Low 24.9°C · 254 mm rain
- Sai Mai in SeptemberThailand · 94 kmHigh 31.0°C · Low 24.7°C · 284 mm rain
- Ban Khlong Prawet in SeptemberThailand · 94 kmHigh 30.8°C · Low 25.2°C · 254 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 Si Maha Phot) is explained once on the Si Maha Phot year overview and on the Sources, method and limits page.