Laos weather in December 2025

Expect daytime maximum temperatures of 29°C in Laos in December based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 29°C maximum daytime temperature in December in Laos (Vientiane)29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 2 days with some rainfall in December in Laos (Vientiane)2
    2 days with some rainfall
  • 16°C minimum night-time temperature in December in Laos (Vientiane)16
    16°C min night temperature
  • 11 hours of daylight per day in December in Laos (Vientiane)11
    11 hours of daylight per day
  • Moderate heat & humidity in December in Laos (Vientiane)M
    Moderate heat & humidity
  • 4 mm monthly rainfall in December in Laos (Vientiane)4
    4 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in December in Laos (Vientiane)8
    8 (Very High) UV index

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The December 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 December. Select a holiday destination to see more weather parameters.

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

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How hot is it in Laos in December?

Daytime temperatures usually reach 29°C in Vientiane, Laos in December with moderate heat and humidity, falling to 16°C at night.

How sunny is it in Laos in December?

There are normally 8 hours of bright sunshine each day in Vientiane, Laos in December - that's 75% of daylight hours.

Does it ever rain in Laos in December?

There are usually 2 days with some rain in Vientiane, Laos in December and the average monthly rainfall is 4mm.

Laos December sunrise & sunset times

Browse the sunrise and sunset times for Laos in December 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
Monday, 1st December 2025 06:24 17:33
Tuesday, 16th December 2025 06:33 17:37
Wednesday, 31st December 2025 06:40 17:45

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