Vientiane monthly weather averages

  • Average daytime temperature

    The bar chart below shows the average monthly peak daytime temperatures at Vientiane

    Vientiane average temperature chart
    Average monthly temperatures in Vientiane (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 29.1 31.4 34.1 35.5 33.5 32.5 32 31.4 31.5 31.1 29.9 28.3
    °F 84.3 88.5 93.4 95.8 92.3 90.4 89.6 88.6 88.6 88.1 85.9 83

    Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

  • Average rainfall & rainy days

    The graph below shows the average rainfall and number of rainy days per month.

    Average monthly rainfall in Vientiane (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 7 12 31 90 236 271 245 332 278 81 12 4
    inches 0.3 0.5 1.2 3.5 9.3 10.7 9.6 13.1 10.9 3.2 0.5 0.1
    Rainy days 3 3 6 10 18 21 21 24 20 10 3 2
  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in Vientiane

    Average daily sunshine Vientiane
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 8.9 8.5 7.9 8.2 7.1 5.5 5.3 4.9 5.4 8.1 8.4 8.9
  • Day / night temperatures

    The graph below shows the daily range of temperatures for each month.

    Maximum and minimum daily temperatures in Vientiane (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C 16 18.3 21.2 23.7 24.3 24.8 24.6 24.4 24 22.7 19.4 15.8
    Max °C 29.4 31.7 34.5 35.8 33.8 32.7 32.2 31.6 31.7 31.4 30.2 28.7
    Min °F 60.8 64.9 70.1 74.6 75.7 76.6 76.3 75.9 75.1 72.8 66.9 60.4
    Max °F 72.9 77 82 85.5 84.2 83.7 83.1 82.4 82 80.6 76.6 72
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Vientiane in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 24.3 24.1 24.9 26.5 28.5 29.5 29.4 29.3 29.1 28.6 27.4 25.5
    °F 75.7 75.3 76.8 79.7 83.3 85 84.8 84.7 84.3 83.4 81.4 77.9
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Vientiane (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 5 5 5 5 5 5 5 5 4 4 5 4
    mph 3 3 3 3 3 3 3 3 3 3 3 3

    A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

  • Relative humidity

    The graph below shows the average relative humidity.

    Average relative humidity in Vientiane
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    69% 67% 65% 68% 78% 82% 82% 84% 83% 78% 72% 70%

Other monthly averages

Vientiane weather stats

Vientiane weather statistics
Hottest month: April 35.5°C 95.9°F
Driest month: December 4mm 0.2ins
Sunniest month: December 8.9hrs
Coldest month: December 28.3°C 82.9°F
Wettest month: August 332mm 13.1ins
Warmest sea: June 29.5°C 85.1°F
Map showing location of Vientiane (17.96667, 102.6)

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