Vientiane weather in August 2025

Expect 90°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Vientiane in August. Check more long-term weather averages for Vientiane in August before you book your next holiday to Laos in 2025/2026.

  • 90°F maximum daytime temperature in August in Vientiane90
    90°F max day temperature
  • 5 hours of sunshine per day
  • 24 days with some rainfall in August in Vientiane24
    24 days with some rainfall
  • 75°F minimum night-time temperature in August in Vientiane75
    75°F min night temperature
  • 13 hours of daylight per day in August in Vientiane13
    13 hours of daylight per day
  • Very high heat & humidity in August in VientianeVH
    Very High heat & humidity
  • 13.1 inches monthly rainfall in August in Vientiane13.1
    13.1 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Vientiane11
    11+ (Extreme) UV index

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The August weather guide for Laos (Vientiane) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How hot is it in Vientiane in August?

Daytime temperatures usually reach 90°F in Vientiane in August with very high heat and humidity, falling to 75°F at night.

How sunny is it in Vientiane in August?

There are normally 5 hours of bright sunshine each day in Vientiane in August - that's 36% of daylight hours.

Does it rain in Vientiane in August?

There are usually 24 days with some rain in Vientiane in August and the average monthly rainfall is 13.1 inches.

What is the chance of a typhoon in Vientiane in August?

On average less than 1 day in August in Vientiane is likely to be affected by the passage of one or more tropical storms.

Vientiane August sunrise & sunset times

Browse the sunrise and sunset times for Vientiane in August 2025. Select a month to view Vientiane sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:48 18:44
Saturday, 16th August 2025 05:52 18:35
Sunday, 31st August 2025 05:55 18:24

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