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Weather in September in Vientiane

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< September >
 
Normal Max/ High Temperature 28°C (82°F)
 
Average Temperature 27°C (81°F)
 
Min/ Low Temperature 24°C (75°F)
 
Normal Precipitation 295mm (11.6in)
Number of Wet Days (probability of rain on a day) 15 (50%)
Average Sunlight per day 05:36
Average Daylight per day 12:12
Sunny (Cloudy) Daylight Hours 46% (54%)
Sun altitude at solar noon on the 21st day.
72.7°


  • The average temperature in Vientiane in September is hot at 27 °C (80.6 °F).
  • Afternoons can be hot with average high temperatures reaching 27.5 °C (81.5 °F).
  • Overnight temperatures are generally fairly hot with an average low of 24.1 °C (75.4 °F).
  • In September the variation/ range of daily mean temperatures is 3.4 °C (6.1 °F).
  • The weather in September is pretty drenched with rain once in a while. A hearty 295mm (11.6in) of water is dropped during an average of 15 days.
  • In September the skies in Vientiane are fair with an average of an unexceptional 5:36 of beaming sunshine daily.
  • The shortest day is 11:57 long and the longest day is 12:27 long with an average length of 12:12.
  • There are approximately 6:28 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 46.4% of daylight hours and cloudy 53.6% of daylight hours.

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Weather Trend Graph for September in Vientiane, Laos

Graph of weather in Vientiane in September

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