Climate averages 1991–2020
Sihanoukville weather
in August.
A hot, very wet month: the 11th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Sihanoukville: daytime highs average 28.1°C and nights cool to about 25.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 556 mm of rain on roughly 29 days, which makes August a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 28 min on an average August day.
The nearest other city in this atlas is Phú Quốc (64 km away). In August its highs average 26.8°C, 1.3°C cooler than Sihanoukville, with 377 mm of rain.
Among the 8 cities listed in Cambodia, Sihanoukville ranks 8th of 8 for the warmest August highs and 8th of 8 for the driest August (rainfall, lowest first). The mean August high of those 8 cities is 30.9°C; Sihanoukville is 2.8°C cooler than that mean.
From August to September, average highs fall by 0.1°C to 28.0°C, and monthly rainfall falls from 556 mm to 554 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sihanoukville climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.4°C24.1°C | 24.1°C | 37 | 9.7 | 11.612 h |
| February | 29.9°C24.5°C | 24.5°C | 30 | 8.3 | 11.812 h |
| March | 30.6°C25.5°C | 25.5°C | 65 | 13.4 | 12.112 h |
| April | 30.9°C26.2°C | 26.2°C | 115 | 19.0 | 12.412 h |
| May | 29.8°C26.1°C | 26.1°C | 377 | 27.9 | 12.613 h |
| June | 28.8°C25.7°C | 25.7°C | 489 | 27.7 | 12.713 h |
| July | 28.3°C25.3°C | 25.3°C | 558 | 29.4 | 12.713 h |
| August, selected | 28.1°C25.3°C | 25.3°C | 556 | 28.9 | 12.512 h |
| September | 28.0°C25.0°C | 25.0°C | 554 | 28.4 | 12.212 h |
| October | 28.5°C24.7°C | 24.7°C | 343 | 27.1 | 11.912 h |
| November | 29.3°C24.9°C | 24.9°C | 104 | 15.4 | 11.612 h |
| December | 29.4°C24.5°C | 24.5°C | 44 | 9.3 | 11.512 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Phú Quốc in AugustVietnam · 64 kmHigh 26.8°C · Low 24.9°C · 377 mm rain
- Hà Tiên in AugustVietnam · 108 kmHigh 29.0°C · Low 25.3°C · 195 mm rain
- Takeo in AugustCambodia · 144 kmHigh 31.0°C · Low 24.6°C · 162 mm rain
- Tịnh Biên in AugustVietnam · 154 kmHigh 30.3°C · Low 24.9°C · 245 mm rain
- Châu Đốc in AugustVietnam · 174 kmHigh 30.6°C · Low 24.8°C · 220 mm rain
- Dangkao in AugustCambodia · 179 kmHigh 31.6°C · Low 24.9°C · 178 mm rain
- Rạch Giá in AugustVietnam · 182 kmHigh 28.9°C · Low 25.2°C · 326 mm rain
- Phnom Penh in AugustCambodia · 185 kmHigh 31.7°C · Low 24.9°C · 178 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sihanoukville) is explained once on the Sihanoukville year overview and on the Sources, method and limits page.