Measurements:
°C
°F
Sihanoukville
78°F
S 9 mph
Feels like: 80°F
Precip: 0%
World Resorts Cambodia Sihanoukville Weather September Weather in Sihanoukville

Sihanoukville Weather: September

Average Day Temperature: 89.2°F
Average Night Temperature: 85.4°F
Sea Water Temperature: 87.8°F
Number of Sunny Days: 5 days
Sunshine Hours: 12.0 - 12.3 hours
Number of Rainy Days: 17 days
Precipitation Totals: 15.6 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 88°F. The lowest night temperature was 82°F. The average values for day and night temperatures during September were 85.6°F и 84.9°F respectivly.

Sihanoukville Water Sea Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Sihanoukville was 87.8°F. The maximum and minimum values were 86.6°F and 89.0°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are gloomy but you can also expect sunny days.

Precipitation Totals in September, in

Precipitation total in September for Sihanoukville is 15.6 in. It makes september one of the most rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 11.5 mph. It makes September one of the most windy months of the year for Sihanoukville.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Sihanoukville in September is 5.5 hours.

Best Time to Visit Sihanoukville
The most sunny months:
January 20 days
December 18 days
February 17 days
The most warm months:
May 93.2 °F
April 92.5 °F
June 91.4 °F
Warmest sea temperature:
May 91.8 °F
April 91.1 °F
June 89.7 °F
The most cold months:
January 88.7 °F
February 88.9 °F
September 89.2 °F
The most rainy months:
July 18 days
August 17 days
September 17 days
The most windy months:
July 12 mph
August 12 mph
September 11 mph

Sihanoukville on the Weather Map

Cambodia Resorts:
NAME
Battambang +64
Koh Dek Koule +78
Koh Kong +60
Koh Rong +78
Phnom Penh +66
Siem Reap +64
Sihanoukville +78
24 Hours Weather Forecast
Sihanoukville
Local time: 01:42
11 jan, sunday
0300 78°F
S
9 mph
0600 76°F
SW
9 mph
0900 78°F
SW
9 mph
1200 82°F
SE
6 mph
1500 82°F
NE
12 mph
1800 82°F
E
7 mph
2100 82°F
SE
6 mph
12 jan, monday
0000 82°F
SE
7 mph