Climate averages 1991–2020
Weather in Thailand in January
In January, average daytime highs across the 46 cities listed in Thailand range from 26.6°C in Chiang Rai to 31.4°C in Khlong Luang. Monthly rainfall ranges from 4.7 mm in Ubon Ratchathani to 125 mm in Nakhon Si Thammarat.
Long-term climate patterns, not a forecast for a particular trip.
City by city
January in Thailand
| City | Average highHigh / low | Average low | Rainfall mm | Rain days |
|---|---|---|---|---|
| Bangkok | 31.0°C21.7°C | 21.7°C | 15 | 2.9 |
| Samut Prakan | 30.5°C22.6°C | 22.6°C | 15 | 3.0 |
| Mueang Nonthaburi | 31.3°C21.5°C | 21.5°C | 15 | 2.9 |
| Chon Buri | 31.4°C22.1°C | 22.1°C | 22 | 4.7 |
| Phra Pradaeng | 30.8°C22.1°C | 22.1°C | 15 | 2.9 |
| Bang Khae | 31.0°C22.2°C | 22.2°C | 15 | 2.9 |
| Hat Yai | 28.7°C23.3°C | 23.3°C | 86 | 12.4 |
| Sai Mai | 31.2°C21.3°C | 21.3°C | 15 | 3.5 |
| Si Racha | 31.0°C22.5°C | 22.5°C | 22 | 4.7 |
| Watthana | 30.8°C21.9°C | 21.9°C | 15 | 2.9 |
| Khlong Sam Wa | 31.1°C21.2°C | 21.2°C | 17 | 3.6 |
| Lat Krabang | 31.2°C21.8°C | 21.8°C | 17 | 3.6 |
| Chatuchak | 30.9°C21.6°C | 21.6°C | 15 | 2.9 |
| Ban Khlong Prawet | 30.9°C21.9°C | 21.9°C | 17 | 3.6 |
| Nong Chok | 31.1°C21.0°C | 21.0°C | 17 | 3.6 |
| Lampang | 28.8°C17.7°C | 17.7°C | 11 | 1.8 |
| Nong Khaem | 31.0°C22.1°C | 22.1°C | 15 | 2.4 |
| Bueng Kum | 31.0°C21.6°C | 21.6°C | 17 | 3.6 |
| Kabin Buri | 30.9°C20.3°C | 20.3°C | 8.9 | 2.1 |
| Surat Thani | 29.6°C22.6°C | 22.6°C | 68 | 9.5 |
| Udon Thani | 28.0°C17.1°C | 17.1°C | 7.6 | 1.5 |
| Chiang Mai | 28.1°C16.2°C | 16.2°C | 6.7 | 1.3 |
| Nakhon Ratchasima | 29.9°C18.9°C | 18.9°C | 6.7 | 1.7 |
| Hua Hin | 30.1°C22.3°C | 22.3°C | 21 | 2.8 |
| Ban Samae Dam | 30.4°C22.6°C | 22.6°C | 15 | 3.0 |
| Ubon Ratchathani | 30.4°C19.1°C | 19.1°C | 4.7 | 1.4 |
| Ban I Chang | 31.4°C21.3°C | 21.3°C | 17 | 2.6 |
| Khlong Luang | 31.4°C21.4°C | 21.4°C | 15 | 3.5 |
| Nakhon Pathom | 31.4°C21.5°C | 21.5°C | 17 | 2.6 |
| Thung Khru | 30.4°C22.5°C | 22.5°C | 15 | 2.9 |
| Pattaya | 30.6°C23.0°C | 23.0°C | 27 | 5.5 |
| Khon Kaen | 29.3°C18.1°C | 18.1°C | 7.2 | 1.7 |
| Rayong | 30.4°C22.9°C | 22.9°C | 28 | 5.9 |
| Nakhon Si Thammarat | 27.9°C22.6°C | 22.6°C | 125 | 16.9 |
| Si Maha Phot | 30.9°C20.4°C | 20.4°C | 9.8 | 2.2 |
| Chanthaburi | 30.4°C22.2°C | 22.2°C | 29 | 6.2 |
| Yala | 28.9°C21.8°C | 21.8°C | 79 | 11.4 |
| Ratchaburi | 30.9°C21.2°C | 21.2°C | 12 | 2.2 |
| Laem Chabang | 30.2°C23.1°C | 23.1°C | 27 | 5.5 |
| Ban Mai | 27.6°C24.7°C | 24.7°C | 104 | 14.1 |
| Nakhon Sawan | 30.9°C20.6°C | 20.6°C | 9.7 | 1.9 |
| Phuket | 28.4°C25.4°C | 25.4°C | 45 | 6.9 |
| Nong Prue | 30.1°C19.4°C | 19.4°C | 15 | 2.7 |
| Chiang Rai | 26.6°C15.0°C | 15.0°C | 22 | 3.0 |
| Thawi Watthana | 31.2°C21.9°C | 21.9°C | 15 | 2.9 |
| Sakon Nakhon | 28.2°C17.0°C | 17.0°C | 6.5 | 1.5 |
A rain day is a local calendar day with at least 1 mm of precipitation.