Climate averages 1991–2020
Udon Thani weather
in January.
A hot, very dry month: the 11th warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Udon Thani: daytime highs average 28.0°C and nights cool to about 17.1°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 7.6 mm of rain on roughly 2 days, which makes January a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 13 min on an average January day.
The nearest other city in this atlas is Vientiane (64 km away). In January its highs average 27.3°C, 0.7°C cooler than Udon Thani, with 11 mm of rain.
Among the 46 cities listed in Thailand, Udon Thani ranks 43rd of 46 for the warmest January highs and 6th of 46 for the driest January (rainfall, lowest first). The mean January high of those 46 cities is 30.2°C; Udon Thani is 2.2°C cooler than that mean.
From January to February, average highs rise by 2.5°C to 30.5°C, and monthly rainfall rises from 7.6 mm to 14 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
Udon Thani climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 28.0°C17.1°C | 17.1°C | 7.6 | 1.5 | 11.211 h |
| February | 30.5°C19.1°C | 19.1°C | 14 | 2.4 | 11.612 h |
| March | 33.1°C22.3°C | 22.3°C | 31 | 5.8 | 12.012 h |
| April | 34.3°C24.7°C | 24.7°C | 62 | 10.4 | 12.513 h |
| May | 32.6°C25.1°C | 25.1°C | 211 | 21.8 | 12.913 h |
| June | 31.4°C25.1°C | 25.1°C | 221 | 23.0 | 13.213 h |
| July | 30.6°C24.7°C | 24.7°C | 266 | 25.6 | 13.113 h |
| August | 30.1°C24.3°C | 24.3°C | 331 | 26.9 | 12.713 h |
| September | 29.9°C23.7°C | 23.7°C | 276 | 24.5 | 12.212 h |
| October | 29.4°C22.3°C | 22.3°C | 96 | 11.8 | 11.812 h |
| November | 28.9°C20.0°C | 20.0°C | 20 | 2.9 | 11.311 h |
| December | 27.4°C17.3°C | 17.3°C | 6.4 | 0.9 | 11.111 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
- Vientiane in JanuaryLaos · 64 kmHigh 27.3°C · Low 17.0°C · 11 mm rain
- Khon Kaen in JanuaryThailand · 108 kmHigh 29.3°C · Low 18.1°C · 7.2 mm rain
- Sakon Nakhon in JanuaryThailand · 147 kmHigh 28.2°C · Low 17.0°C · 6.5 mm rain
- Thakhèk in JanuaryLaos · 217 kmHigh 28.2°C · Low 16.0°C · 6.0 mm rain
- Savannakhet in JanuaryLaos · 230 kmHigh 28.5°C · Low 17.3°C · 4.4 mm rain
- Nakhon Ratchasima in JanuaryThailand · 282 kmHigh 29.9°C · Low 18.9°C · 6.7 mm rain
- Ubon Ratchathani in JanuaryThailand · 327 kmHigh 30.4°C · Low 19.1°C · 4.7 mm rain
- Vinh in JanuaryVietnam · 338 kmHigh 20.6°C · Low 16.0°C · 30 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 Udon Thani) is explained once on the Udon Thani year overview and on the Sources, method and limits page.