Climate averages 1991–2020
Weather in Thailand in September
In September, average daytime highs across the 46 cities listed in Thailand range from 27.8°C in Phuket to 31.4°C in Yala. Monthly rainfall ranges from 123 mm in Ban Mai to 363 mm in Chanthaburi.
Long-term climate patterns, not a forecast for a particular trip.
City by city
September in Thailand
| City | Average highHigh / low | Average low | Rainfall mm | Rain days |
|---|---|---|---|---|
| Bangkok | 30.9°C24.9°C | 24.9°C | 237 | 25.3 |
| Samut Prakan | 30.4°C25.5°C | 25.5°C | 212 | 24.4 |
| Mueang Nonthaburi | 31.2°C24.8°C | 24.8°C | 237 | 25.3 |
| Chon Buri | 30.4°C25.0°C | 25.0°C | 232 | 25.1 |
| Phra Pradaeng | 30.8°C25.2°C | 25.2°C | 237 | 25.3 |
| Bang Khae | 30.9°C25.2°C | 25.2°C | 237 | 25.3 |
| Hat Yai | 30.4°C24.2°C | 24.2°C | 164 | 24.0 |
| Sai Mai | 31.0°C24.7°C | 24.7°C | 284 | 26.9 |
| Si Racha | 30.1°C25.4°C | 25.4°C | 232 | 25.1 |
| Watthana | 30.7°C25.1°C | 25.1°C | 237 | 25.3 |
| Khlong Sam Wa | 31.0°C24.7°C | 24.7°C | 254 | 26.2 |
| Lat Krabang | 30.8°C25.0°C | 25.0°C | 254 | 26.2 |
| Chatuchak | 30.8°C24.9°C | 24.9°C | 237 | 25.3 |
| Ban Khlong Prawet | 30.8°C25.2°C | 25.2°C | 254 | 26.2 |
| Nong Chok | 30.9°C24.6°C | 24.6°C | 254 | 26.2 |
| Lampang | 29.1°C23.3°C | 23.3°C | 256 | 24.8 |
| Nong Khaem | 30.9°C25.1°C | 25.1°C | 245 | 25.4 |
| Bueng Kum | 30.8°C24.9°C | 24.9°C | 254 | 26.2 |
| Kabin Buri | 29.7°C23.6°C | 23.6°C | 283 | 27.0 |
| Surat Thani | 30.2°C23.9°C | 23.9°C | 154 | 23.6 |
| Udon Thani | 29.9°C23.7°C | 23.7°C | 276 | 24.5 |
| Chiang Mai | 29.3°C22.9°C | 22.9°C | 227 | 23.4 |
| Nakhon Ratchasima | 30.3°C23.7°C | 23.7°C | 231 | 24.5 |
| Hua Hin | 30.5°C24.8°C | 24.8°C | 132 | 20.1 |
| Ban Samae Dam | 30.5°C25.5°C | 25.5°C | 212 | 24.4 |
| Ubon Ratchathani | 29.9°C23.8°C | 23.8°C | 273 | 25.6 |
| Ban I Chang | 31.3°C24.6°C | 24.6°C | 236 | 24.9 |
| Khlong Luang | 31.2°C24.7°C | 24.7°C | 284 | 26.9 |
| Nakhon Pathom | 31.3°C24.7°C | 24.7°C | 236 | 24.9 |
| Thung Khru | 30.5°C25.5°C | 25.5°C | 237 | 25.3 |
| Pattaya | 29.8°C25.7°C | 25.7°C | 242 | 25.6 |
| Khon Kaen | 30.1°C23.8°C | 23.8°C | 237 | 23.3 |
| Rayong | 29.4°C25.1°C | 25.1°C | 300 | 26.4 |
| Nakhon Si Thammarat | 30.1°C23.8°C | 23.8°C | 149 | 25.8 |
| Si Maha Phot | 29.9°C23.7°C | 23.7°C | 308 | 27.3 |
| Chanthaburi | 28.7°C24.5°C | 24.5°C | 363 | 28.8 |
| Yala | 31.4°C23.2°C | 23.2°C | 160 | 22.7 |
| Ratchaburi | 31.0°C24.6°C | 24.6°C | 197 | 24.1 |
| Laem Chabang | 29.6°C25.6°C | 25.6°C | 242 | 25.6 |
| Ban Mai | 30.1°C25.5°C | 25.5°C | 123 | 21.6 |
| Nakhon Sawan | 31.1°C24.6°C | 24.6°C | 272 | 25.9 |
| Phuket | 27.8°C25.7°C | 25.7°C | 311 | 24.9 |
| Nong Prue | 29.9°C23.5°C | 23.5°C | 214 | 24.5 |
| Chiang Rai | 29.0°C22.9°C | 22.9°C | 295 | 25.1 |
| Thawi Watthana | 31.1°C25.0°C | 25.0°C | 237 | 25.3 |
| Sakon Nakhon | 29.7°C23.7°C | 23.7°C | 268 | 23.6 |
A rain day is a local calendar day with at least 1 mm of precipitation.