Climate averages 1991–2020
Ubon Ratchathani weather
in December.
A hot, very dry month: the coolest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Ubon Ratchathani: daytime highs average 29.4°C and nights cool to about 19.5°C. By daytime temperature it is the coolest month of the year.
Expect about 6.3 mm of rain on roughly 1 day, which makes December a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 15 min on an average December day.
The nearest other city in this atlas is Pakse (103 km away). In December its highs average 29.5°C, about as warm as Ubon Ratchathani, with 5.8 mm of rain.
Among the 46 cities listed in Thailand, Ubon Ratchathani ranks 31st of 46 for the warmest December highs and 6th of 46 for the driest December (rainfall, lowest first). The mean December high of those 46 cities is 29.6°C; Ubon Ratchathani is 0.2°C cooler than that mean.
From December to January, average highs rise by 1.0°C to 30.4°C, and monthly rainfall falls from 6.3 mm to 4.7 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
Ubon Ratchathani climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.4°C19.1°C | 19.1°C | 4.7 | 1.4 | 11.311 h |
| February | 32.2°C20.9°C | 20.9°C | 9.9 | 1.9 | 11.612 h |
| March | 34.1°C23.7°C | 23.7°C | 35 | 6.3 | 12.012 h |
| April | 34.5°C25.3°C | 25.3°C | 81 | 12.9 | 12.512 h |
| May | 33.0°C25.4°C | 25.4°C | 181 | 22.4 | 12.813 h |
| June | 31.7°C25.1°C | 25.1°C | 194 | 23.2 | 13.013 h |
| July | 30.9°C24.6°C | 24.6°C | 232 | 26.2 | 12.913 h |
| August | 30.3°C24.3°C | 24.3°C | 270 | 26.9 | 12.613 h |
| September | 29.9°C23.8°C | 23.8°C | 273 | 25.6 | 12.212 h |
| October | 29.8°C22.7°C | 22.7°C | 124 | 15.0 | 11.812 h |
| November | 29.9°C21.4°C | 21.4°C | 31 | 4.7 | 11.411 h |
| December, selected | 29.4°C19.5°C | 19.5°C | 6.3 | 1.3 | 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
December in nearby cities
- Pakse in DecemberLaos · 103 kmHigh 29.5°C · Low 19.1°C · 5.8 mm rain
- Savannakhet in DecemberLaos · 148 kmHigh 27.7°C · Low 17.8°C · 4.9 mm rain
- Sakon Nakhon in DecemberThailand · 227 kmHigh 27.6°C · Low 17.2°C · 5.5 mm rain
- Siem Reap in DecemberCambodia · 234 kmHigh 30.1°C · Low 21.7°C · 16 mm rain
- Thakhèk in DecemberLaos · 242 kmHigh 27.7°C · Low 16.3°C · 5.8 mm rain
- Khon Kaen in DecemberThailand · 254 kmHigh 28.3°C · Low 18.3°C · 5.1 mm rain
- Nakhon Ratchasima in DecemberThailand · 296 kmHigh 28.9°C · Low 19.1°C · 5.3 mm rain
- Battambang in DecemberCambodia · 297 kmHigh 30.5°C · Low 21.5°C · 13 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 Ubon Ratchathani) is explained once on the Ubon Ratchathani year overview and on the Sources, method and limits page.