Laos weather in May 2025

Expect 34°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Laos in May based on long-term weather averages. There is usually 18 days with some rainfall and 236 mm of average monthly rainfall in May.

  • 34°C maximum daytime temperature in May in Laos (Vientiane)34
    34°C max day temperature
  • 7 hours of sunshine per day
  • 18 days with some rainfall in May in Laos (Vientiane)18
    18 days with some rainfall
  • 24°C minimum night-time temperature in May in Laos (Vientiane)24
    24°C min night temperature
  • 13 hours of daylight per day in May in Laos (Vientiane)13
    13 hours of daylight per day
  • Very high heat & humidity in May in Laos (Vientiane)VH
    Very High heat & humidity
  • 236 mm monthly rainfall in May in Laos (Vientiane)236
    236 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Laos (Vientiane)11
    11+ (Extreme) UV index

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The May 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.

Top Laos destinations

Below are average maximum temperatures at popular countries, regions and places in Laos in May. Select a holiday destination to see more weather parameters.

All Laos destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Laos in May?

Daytime temperatures usually reach 34°C in Vientiane, Laos in May with very high heat and humidity, falling to 24°C at night.

How sunny is it in Laos in May?

There are normally 7 hours of bright sunshine each day in Vientiane, Laos in May - that's 52% of daylight hours.

Does it rain in Laos in May?

There are usually 18 days with some rain in Vientiane, Laos in May and the average monthly rainfall is 236mm.

Laos May sunrise & sunset times

Browse the sunrise and sunset times for Laos in May 2025. Select a month to view Laos sunrise and sunset times for the next 12 months. The Laos sunrise and sunset times shown below are for Vientiane.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:43 18:31
Friday, 16th May 2025 05:36 18:36
Saturday, 31st May 2025 05:33 18:41

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