Climate averages 1991–2020
Hat Yai weather
in December.
A warm, very wet month: the coolest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Hat Yai: daytime highs average 27.9°C and nights cool to about 23.5°C. By daytime temperature it is the coolest month of the year.
Expect about 277 mm of rain on roughly 22 days, which makes December a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 43 min on an average December day.
The nearest other city in this atlas is Ban Mai (23 km away). In December its highs average 27.3°C, 0.5°C cooler than Hat Yai, with 338 mm of rain.
Among the 46 cities listed in Thailand, Hat Yai ranks 39th of 46 for the warmest December highs and 45th of 46 for the driest December (rainfall, lowest first). The mean December high of those 46 cities is 29.6°C; Hat Yai is 1.7°C cooler than that mean.
From December to January, average highs rise by 0.9°C to 28.7°C, and monthly rainfall falls from 277 mm to 86 mm.
The annual picture
December 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
Hat Yai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.7°C23.3°C | 23.3°C | 86 | 12.4 | 11.812 h |
| February | 30.2°C23.5°C | 23.5°C | 44 | 7.3 | 11.912 h |
| March | 31.4°C24.1°C | 24.1°C | 94 | 12.6 | 12.112 h |
| April | 31.7°C24.7°C | 24.7°C | 136 | 19.3 | 12.312 h |
| May | 31.4°C25.0°C | 25.0°C | 150 | 23.5 | 12.412 h |
| June | 31.1°C24.8°C | 24.8°C | 114 | 19.4 | 12.513 h |
| July | 31.0°C24.6°C | 24.6°C | 115 | 19.7 | 12.512 h |
| August | 31.0°C24.5°C | 24.5°C | 121 | 20.7 | 12.312 h |
| September | 30.4°C24.2°C | 24.2°C | 164 | 24.0 | 12.212 h |
| October | 29.2°C23.9°C | 23.9°C | 285 | 28.1 | 12.012 h |
| November | 28.3°C23.7°C | 23.7°C | 347 | 27.3 | 11.812 h |
| December, selected | 27.9°C23.5°C | 23.5°C | 277 | 21.9 | 11.712 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
December in nearby cities
- Ban Mai in DecemberThailand · 23 kmHigh 27.3°C · Low 24.8°C · 338 mm rain
- Alor Setar in DecemberMalaysia · 100 kmHigh 29.3°C · Low 23.4°C · 129 mm rain
- Yala in DecemberThailand · 103 kmHigh 28.0°C · Low 22.3°C · 236 mm rain
- Pendang in DecemberMalaysia · 113 kmHigh 29.2°C · Low 23.0°C · 160 mm rain
- Sungai Petani in DecemberMalaysia · 151 kmHigh 29.1°C · Low 23.2°C · 161 mm rain
- Kota Kuala Muda in DecemberMalaysia · 158 kmHigh 29.2°C · Low 23.8°C · 167 mm rain
- Nakhon Si Thammarat in DecemberThailand · 168 kmHigh 27.6°C · Low 23.0°C · 250 mm rain
- Tasek Glugor in DecemberMalaysia · 170 kmHigh 29.0°C · Low 23.2°C · 190 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 Hat Yai) is explained once on the Hat Yai year overview and on the Sources, method and limits page.