Weather in Sihanoukville in August 2025
Average weather
Average temperature in Sihanoukville in August
The temperature in August is +29°C on average, with a range between a maximum of +30°C during the day and a minimum of +25°C at night.
The average maximum temperature goes down 20% by the end of the month, compared with the beginning of the month, from +29°C to +28°C.
Is Sihanoukville warm or cold in August?
Sihanoukville is typically warm in August.
Maximum temperatures go up compared to the previous month from +28°C to +28°C. The minimum temperature also goes up from +26°C to +26°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is one of the coolest months in Sihanoukville, here is the comparison with other months:
Climate in Sihanoukville in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +28°C | +28°C | +28°C | ||||
| Min. temperature | ||||||
| +24°C | +24°C | +24°C | ||||
| Max. temperature | ||||||
| +32°C | +31°C | +31°C | ||||
| Rainfall | ||||||
| 637 mm | 625 mm | 562 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 3 m/s | ||||
| Humidity | ||||||
| 85% | 85% | 85% | ||||
| Air pressure | ||||||
| 1007 HPa | 1008 HPa | 1008 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 0 | ||||
| Cloudy days | ||||||
| 0 | 0 | 0 | ||||
| Rainy days | ||||||
| 30 | 30 | 29 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as ok as in July. The temperature levels stay the same in the area of +28°C for average maximum temperature during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 637 mm to 625 mm. Humidity levels don’t change as the month goes on, averaging around 85%. The average wind speed doesn’t change much during August, staying around 4 m/s. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
September brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Sihanoukville is gradually decreasing during August, going from 5 m/s to 3 m/s over the course of the month.
Rain
How was the weather last August in Sihanoukville?
Climate Change over Years
The climate in Sihanoukville in August has not changed much over the last 43 years.
The average temperature was the lowest in 1999 (+29°C) and the highest in 2024 (+30°C). The driest year was 2014 with only 2645 mm of rainfall, and the wettest year was 2006 with 4069 mm.
FAQ
Is August a good time to visit Sihanoukville?
Can you sunbathe in Sihanoukville in August?
Is Sihanoukville rainy in August?
Is it sunny in Sihanoukville in August?
Other cities in Cambodia
Monthly weather in Sihanoukville
Source of the data
For this page, we’ve looked at the typical weather in Sihanoukville, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
