Climate averages 1991–2020
Ubon Ratchathani weather
in May.
A hot, very wet month: the 3rd warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Ubon Ratchathani: daytime highs average 33.0°C and nights cool to about 25.4°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 181 mm of rain on roughly 22 days, which makes May a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 50 min on an average May day.
The nearest other city in this atlas is Pakse (103 km away). In May its highs average 31.9°C, 1.1°C cooler than Ubon Ratchathani, with 190 mm of rain.
Among the 46 cities listed in Thailand, Ubon Ratchathani ranks joint 22nd of 46 for the warmest May highs and 37th of 46 for the driest May (rainfall, lowest first). The mean May high of those 46 cities is 32.7°C; Ubon Ratchathani is 0.3°C warmer than that mean.
From May to June, average highs fall by 1.3°C to 31.7°C, and monthly rainfall rises from 181 mm to 194 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Pakse in MayLaos · 103 kmHigh 31.9°C · Low 24.6°C · 190 mm rain
- Savannakhet in MayLaos · 148 kmHigh 32.1°C · Low 24.7°C · 189 mm rain
- Sakon Nakhon in MayThailand · 227 kmHigh 32.2°C · Low 25.0°C · 216 mm rain
- Siem Reap in MayCambodia · 234 kmHigh 33.0°C · Low 26.1°C · 148 mm rain
- Thakhèk in MayLaos · 242 kmHigh 31.5°C · Low 24.2°C · 253 mm rain
- Khon Kaen in MayThailand · 254 kmHigh 33.4°C · Low 25.4°C · 152 mm rain
- Nakhon Ratchasima in MayThailand · 296 kmHigh 33.5°C · Low 25.2°C · 140 mm rain
- Battambang in MayCambodia · 297 kmHigh 34.1°C · Low 25.8°C · 115 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.