Weather in Vientiane: September
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Average day temperature: | 87.2°F |
| Average night temperature: | 75.1°F | |
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Number of sunny days: | 6 days |
| Day length: | 12.0 - 12.5 hours | |
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Number of rainy days: | 14 days |
| Precipitation totals: | 7.1 in. | |
| more information | ||
14 days
forecast
forecast
| Vientiane |
weather in
October
October
| Vientiane |
Air temperature in September, °F
Show year:
2026
2025
2024
The highest day temperature during September of 2026 was 88°F. At the same time the lowest night temperature was 69°F. Daily and nightly averages during September were 81.9°F and 73.4°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Vientiane in September is 7.5 in. It makes september one of the most rainy months of the year.
Wind speed in September, mph
The average wind speed value in September is 3.5 mph It makes September one of the least windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 3.7.
Best time for vacation in Vientiane
Vientiane on a weather map
Places in Laos:
Name
°F
24 Hours Forecast
Vientiane
Local time: 13:46
October 04, sunday
1500
90°F
NW
4 mph
4 mph
1800
81°F
NW
4 mph
4 mph
2100
77°F
NE
2 mph
2 mph
October 05, monday
0000
75°F
S
2 mph
2 mph
0300
73°F
S
4 mph
4 mph
0600
73°F
S
2 mph
2 mph
0900
79°F
W
2 mph
2 mph
1200
79°F
W
5 mph
5 mph
