Climate averages 1991–2020
Udon Thani weather
in April.
A very hot, moderately wet month: the warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a very hot month in Udon Thani: daytime highs average 34.3°C and nights cool to about 24.7°C. By daytime temperature it is the warmest month of the year.
Expect about 62 mm of rain on roughly 10 days, which makes April a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 31 min on an average April day.
The nearest other city in this atlas is Vientiane (64 km away). In April its highs average 33.8°C, about as warm as Udon Thani, with 75 mm of rain.
Among the 46 cities listed in Thailand, Udon Thani ranks joint 21st of 46 for the warmest April highs and joint 4th of 46 for the driest April (rainfall, lowest first). The mean April high of those 46 cities is 33.9°C; Udon Thani is 0.3°C warmer than that mean.
From April to May, average highs fall by 1.7°C to 32.6°C, and monthly rainfall rises from 62 mm to 211 mm.
The annual picture
April 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 | 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, selected | 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
April in nearby cities
- Vientiane in AprilLaos · 64 kmHigh 33.8°C · Low 24.4°C · 75 mm rain
- Khon Kaen in AprilThailand · 108 kmHigh 34.9°C · Low 25.2°C · 65 mm rain
- Sakon Nakhon in AprilThailand · 147 kmHigh 33.7°C · Low 24.5°C · 73 mm rain
- Thakhèk in AprilLaos · 217 kmHigh 33.3°C · Low 23.4°C · 69 mm rain
- Savannakhet in AprilLaos · 230 kmHigh 33.8°C · Low 24.2°C · 66 mm rain
- Nakhon Ratchasima in AprilThailand · 282 kmHigh 35.0°C · Low 25.0°C · 69 mm rain
- Ubon Ratchathani in AprilThailand · 327 kmHigh 34.5°C · Low 25.3°C · 81 mm rain
- Vinh in AprilVietnam · 338 kmHigh 29.6°C · Low 22.9°C · 41 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.