Climate averages 1991–2020
Vientiane weather
in June.
A hot, very wet month: the 4th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a hot month in Vientiane: daytime highs average 30.5°C and nights cool to about 24.7°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 316 mm of rain on roughly 25 days, which makes June a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 11 min on an average June day.
The nearest other city in this atlas is Udon Thani (64 km away). In June its highs average 31.4°C, 0.9°C warmer than Vientiane, with 221 mm of rain.
Among the 4 cities listed in Laos, Vientiane ranks 2nd of 4 for the warmest June highs and 2nd of 4 for the driest June (rainfall, lowest first). The mean June high of those 4 cities is 30.4°C; Vientiane is 0.1°C warmer than that mean.
From June to July, average highs fall by 0.6°C to 29.9°C, and monthly rainfall rises from 316 mm to 372 mm.
The annual picture
June 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
Vientiane climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.3°C17.0°C | 17.0°C | 11 | 1.8 | 11.211 h |
| February | 29.8°C18.9°C | 18.9°C | 15 | 2.2 | 11.512 h |
| March | 32.6°C22.1°C | 22.1°C | 36 | 6.2 | 12.012 h |
| April | 33.8°C24.4°C | 24.4°C | 75 | 11.9 | 12.513 h |
| May | 31.9°C24.7°C | 24.7°C | 261 | 23.4 | 13.013 h |
| June, selected | 30.5°C24.7°C | 24.7°C | 316 | 25.0 | 13.213 h |
| July | 29.9°C24.4°C | 24.4°C | 372 | 26.5 | 13.113 h |
| August | 29.6°C24.1°C | 24.1°C | 401 | 27.4 | 12.713 h |
| September | 29.6°C23.8°C | 23.8°C | 300 | 24.7 | 12.312 h |
| October | 29.3°C22.7°C | 22.7°C | 101 | 11.9 | 11.712 h |
| November | 28.7°C20.2°C | 20.2°C | 22 | 3.0 | 11.311 h |
| December | 26.9°C17.3°C | 17.3°C | 8.4 | 1.2 | 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
June in nearby cities
- Udon Thani in JuneThailand · 64 kmHigh 31.4°C · Low 25.1°C · 221 mm rain
- Khon Kaen in JuneThailand · 171 kmHigh 32.4°C · Low 25.4°C · 134 mm rain
- Sakon Nakhon in JuneThailand · 187 kmHigh 31.0°C · Low 25.1°C · 240 mm rain
- Thakhèk in JuneLaos · 244 kmHigh 30.2°C · Low 24.2°C · 378 mm rain
- Savannakhet in JuneLaos · 277 kmHigh 30.7°C · Low 24.6°C · 209 mm rain
- Lampang in JuneThailand · 330 kmHigh 30.5°C · Low 24.0°C · 180 mm rain
- Vinh in JuneVietnam · 336 kmHigh 33.9°C · Low 27.2°C · 105 mm rain
- Nakhon Ratchasima in JuneThailand · 337 kmHigh 32.8°C · Low 25.2°C · 118 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 Vientiane) is explained once on the Vientiane year overview and on the Sources, method and limits page.