Climate averages 1991–2020
Surat Thani weather
in January.
A hot, moderately wet month: the 9th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Surat Thani: daytime highs average 29.6°C and nights cool to about 22.6°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 68 mm of rain on roughly 10 days, which makes January a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 39 min on an average January day.
The nearest other city in this atlas is Nakhon Si Thammarat (105 km away). In January its highs average 27.9°C, 1.7°C cooler than Surat Thani, with 125 mm of rain.
Among the 46 cities listed in Thailand, Surat Thani ranks 35th of 46 for the warmest January highs and 42nd of 46 for the driest January (rainfall, lowest first). The mean January high of those 46 cities is 30.2°C; Surat Thani is 0.6°C cooler than that mean.
From January to February, average highs rise by 2.1°C to 31.8°C, and monthly rainfall falls from 68 mm to 32 mm.
The annual picture
January 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
Surat Thani climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 29.6°C22.6°C | 22.6°C | 68 | 9.5 | 11.712 h |
| February | 31.8°C22.9°C | 22.9°C | 32 | 4.8 | 11.812 h |
| March | 33.3°C24.0°C | 24.0°C | 92 | 9.1 | 12.112 h |
| April | 33.4°C24.9°C | 24.9°C | 114 | 14.4 | 12.312 h |
| May | 32.1°C24.9°C | 24.9°C | 124 | 22.1 | 12.513 h |
| June | 31.3°C24.6°C | 24.6°C | 95 | 18.6 | 12.613 h |
| July | 31.1°C24.4°C | 24.4°C | 89 | 18.4 | 12.613 h |
| August | 30.9°C24.3°C | 24.3°C | 108 | 19.7 | 12.412 h |
| September | 30.2°C23.9°C | 23.9°C | 154 | 23.6 | 12.212 h |
| October | 29.2°C23.6°C | 23.6°C | 268 | 27.3 | 11.912 h |
| November | 28.6°C23.5°C | 23.5°C | 267 | 23.5 | 11.712 h |
| December | 28.4°C23.1°C | 23.1°C | 149 | 15.7 | 11.612 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
January in nearby cities
- Nakhon Si Thammarat in JanuaryThailand · 105 kmHigh 27.9°C · Low 22.6°C · 125 mm rain
- Phuket in JanuaryThailand · 173 kmHigh 28.4°C · Low 25.4°C · 45 mm rain
- Ban Mai in JanuaryThailand · 253 kmHigh 27.6°C · Low 24.7°C · 104 mm rain
- Hat Yai in JanuaryThailand · 268 kmHigh 28.7°C · Low 23.3°C · 86 mm rain
- Alor Setar in JanuaryMalaysia · 354 kmHigh 31.3°C · Low 23.5°C · 53 mm rain
- Yala in JanuaryThailand · 360 kmHigh 28.9°C · Low 21.8°C · 79 mm rain
- Pendang in JanuaryMalaysia · 372 kmHigh 31.2°C · Low 23.0°C · 67 mm rain
- Myeik in JanuaryMyanmar · 376 kmHigh 31.6°C · Low 22.1°C · 32 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 Surat Thani) is explained once on the Surat Thani year overview and on the Sources, method and limits page.