Weather in Siem Reap: September
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Average day temperature: | 88.3°F |
| Average night temperature: | 77.2°F | |
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Number of sunny days: | 3 days |
| Day length: | 12.0 - 12.4 hours | |
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Number of rainy days: | 16 days |
| Precipitation totals: | 8.9 in. | |
| more information | ||
14 days
forecast
forecast
| Siem Reap |
weather in
October
October
| Siem Reap |
Air temperature in September, °F
Show year:
2025
2024
2023
The highest day temperature during September of 2025 was 91°F. At the same time the lowest night temperature was 75°F. Daily and nightly averages during September were 86.4°F and 76.7°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 Siem Reap in September is 8.4 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 5.5 mph It makes September one of the most 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: 4.1.
Best time for vacation in Siem Reap
Siem Reap on a weather map
Places in Cambodia:
Name
°F
24 Hours Forecast
Siem Reap
Local time: 10:53
December 05, friday
1200
86°F
SW
4 mph
4 mph
1500
84°F
W
1 mph
1 mph
1800
79°F
S
6 mph
6 mph
2100
77°F
S
5 mph
5 mph
December 06, saturday
0000
77°F
W
4 mph
4 mph
0300
75°F
W
6 mph
6 mph
0600
73°F
W
6 mph
6 mph
0900
79°F
W
7 mph
7 mph
