Climate averages 1991–2020
Khon Kaen weather
in May.
A hot, wet month: the 3rd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Khon Kaen: daytime highs average 33.4°C and nights cool to about 25.4°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 152 mm of rain on roughly 20 days, which makes May a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 53 min on an average May day.
The nearest other city in this atlas is Udon Thani (108 km away). In May its highs average 32.6°C, 0.8°C cooler than Khon Kaen, with 211 mm of rain.
Among the 46 cities listed in Thailand, Khon Kaen ranks joint 9th of 46 for the warmest May highs and joint 30th of 46 for the driest May (rainfall, lowest first). The mean May high of those 46 cities is 32.7°C; Khon Kaen is 0.7°C warmer than that mean.
From May to June, average highs fall by 1.0°C to 32.4°C, and monthly rainfall falls from 152 mm to 134 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
Khon Kaen climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.3°C18.1°C | 18.1°C | 7.2 | 1.7 | 11.311 h |
| February | 31.7°C19.9°C | 19.9°C | 11 | 2.4 | 11.612 h |
| March | 34.0°C23.2°C | 23.2°C | 34 | 5.9 | 12.012 h |
| April | 34.9°C25.2°C | 25.2°C | 65 | 10.7 | 12.512 h |
| May, selected | 33.4°C25.4°C | 25.4°C | 152 | 20.1 | 12.913 h |
| June | 32.4°C25.4°C | 25.4°C | 134 | 19.1 | 13.113 h |
| July | 31.7°C25.0°C | 25.0°C | 164 | 20.2 | 13.013 h |
| August | 30.8°C24.5°C | 24.5°C | 214 | 23.3 | 12.713 h |
| September | 30.1°C23.8°C | 23.8°C | 237 | 23.3 | 12.212 h |
| October | 29.6°C22.5°C | 22.5°C | 104 | 12.8 | 11.812 h |
| November | 29.4°C20.6°C | 20.6°C | 24 | 3.5 | 11.411 h |
| December | 28.3°C18.3°C | 18.3°C | 5.1 | 1.0 | 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
- Udon Thani in MayThailand · 108 kmHigh 32.6°C · Low 25.1°C · 211 mm rain
- Sakon Nakhon in MayThailand · 161 kmHigh 32.2°C · Low 25.0°C · 216 mm rain
- Vientiane in MayLaos · 171 kmHigh 31.9°C · Low 24.7°C · 261 mm rain
- Nakhon Ratchasima in MayThailand · 182 kmHigh 33.5°C · Low 25.2°C · 140 mm rain
- Savannakhet in MayLaos · 206 kmHigh 32.1°C · Low 24.7°C · 189 mm rain
- Thakhèk in MayLaos · 238 kmHigh 31.5°C · Low 24.2°C · 253 mm rain
- Ubon Ratchathani in MayThailand · 254 kmHigh 33.0°C · Low 25.4°C · 181 mm rain
- Nakhon Sawan in MayThailand · 300 kmHigh 34.5°C · Low 26.3°C · 156 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 Khon Kaen) is explained once on the Khon Kaen year overview and on the Sources, method and limits page.