Climate averages 1991–2020
Sihanoukville weather
in April.
A hot, wet month: the warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Sihanoukville: daytime highs average 30.9°C and nights cool to about 26.2°C. By daytime temperature it is the warmest month of the year.
Expect about 115 mm of rain on roughly 19 days, which makes April a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 21 min on an average April day.
The nearest other city in this atlas is Phú Quốc (64 km away). In April its highs average 28.5°C, 2.4°C cooler than Sihanoukville, with 123 mm of rain.
Among the 8 cities listed in Cambodia, Sihanoukville ranks 8th of 8 for the warmest April highs and 8th of 8 for the driest April (rainfall, lowest first). The mean April high of those 8 cities is 34.2°C; Sihanoukville is 3.3°C cooler than that mean.
From April to May, average highs fall by 1.0°C to 29.8°C, and monthly rainfall rises from 115 mm to 377 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Phú Quốc in AprilVietnam · 64 kmHigh 28.5°C · Low 25.8°C · 123 mm rain
- Hà Tiên in AprilVietnam · 108 kmHigh 32.2°C · Low 25.8°C · 113 mm rain
- Takeo in AprilCambodia · 144 kmHigh 34.1°C · Low 25.4°C · 94 mm rain
- Tịnh Biên in AprilVietnam · 154 kmHigh 33.8°C · Low 25.3°C · 110 mm rain
- Châu Đốc in AprilVietnam · 174 kmHigh 33.9°C · Low 25.3°C · 100 mm rain
- Dangkao in AprilCambodia · 179 kmHigh 34.7°C · Low 25.9°C · 81 mm rain
- Rạch Giá in AprilVietnam · 182 kmHigh 32.9°C · Low 25.4°C · 87 mm rain
- Phnom Penh in AprilCambodia · 185 kmHigh 34.7°C · Low 25.9°C · 81 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.