Climate averages 1991–2020
Nakhon Sawan weather
in September.
A hot, very wet month: the 8th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Nakhon Sawan: daytime highs average 31.1°C and nights cool to about 24.6°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 272 mm of rain on roughly 26 days, which makes September a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 14 min on an average September day.
The nearest other city in this atlas is Nong Prue (142 km away). In September its highs average 29.9°C, 1.1°C cooler than Nakhon Sawan, with 214 mm of rain.
Among the 46 cities listed in Thailand, Nakhon Sawan ranks joint 6th of 46 for the warmest September highs and 36th of 46 for the driest September (rainfall, lowest first). The mean September high of those 46 cities is 30.3°C; Nakhon Sawan is 0.7°C warmer than that mean.
From September to October, average highs fall by 0.6°C to 30.4°C, and monthly rainfall falls from 272 mm to 143 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
Nakhon Sawan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.9°C20.6°C | 20.6°C | 9.7 | 1.9 | 11.311 h |
| February | 33.3°C22.4°C | 22.4°C | 11 | 2.0 | 11.612 h |
| March | 35.6°C25.0°C | 25.0°C | 38 | 6.2 | 12.012 h |
| April | 36.5°C26.6°C | 26.6°C | 62 | 11.3 | 12.512 h |
| May | 34.5°C26.3°C | 26.3°C | 156 | 20.9 | 12.913 h |
| June | 33.1°C25.8°C | 25.8°C | 147 | 23.3 | 13.013 h |
| July | 32.4°C25.4°C | 25.4°C | 161 | 23.4 | 13.013 h |
| August | 31.5°C25.0°C | 25.0°C | 215 | 25.1 | 12.713 h |
| September, selected | 31.1°C24.6°C | 24.6°C | 272 | 25.9 | 12.212 h |
| October | 30.4°C23.8°C | 23.8°C | 143 | 17.1 | 11.812 h |
| November | 30.4°C22.2°C | 22.2°C | 24 | 4.7 | 11.411 h |
| December | 29.8°C20.2°C | 20.2°C | 7.7 | 1.2 | 11.211 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
- Nong Prue in SeptemberThailand · 142 kmHigh 29.9°C · Low 23.5°C · 214 mm rain
- Khlong Luang in SeptemberThailand · 190 kmHigh 31.2°C · Low 24.7°C · 284 mm rain
- Sai Mai in SeptemberThailand · 206 kmHigh 31.0°C · Low 24.7°C · 284 mm rain
- Mueang Nonthaburi in SeptemberThailand · 209 kmHigh 31.2°C · Low 24.8°C · 237 mm rain
- Nakhon Pathom in SeptemberThailand · 210 kmHigh 31.3°C · Low 24.7°C · 236 mm rain
- Chatuchak in SeptemberThailand · 213 kmHigh 30.8°C · Low 24.9°C · 237 mm rain
- Khlong Sam Wa in SeptemberThailand · 214 kmHigh 31.0°C · Low 24.7°C · 254 mm rain
- Thawi Watthana in SeptemberThailand · 215 kmHigh 31.1°C · Low 25.0°C · 237 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 Nakhon Sawan) is explained once on the Nakhon Sawan year overview and on the Sources, method and limits page.