Sihanoukville weather in May
May in Sihanoukville: hot, soaked, with clean air — fine if you can take 29 rainy days.
#7 of 12 months in Sihanoukville · #721 of 897 destinations to visit in May · comfort 70/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Sihanoukville in May
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Sihanoukville climate normals — May
| Daytime high | 30°C / 86°F | 🥵 hot |
|---|---|---|
| Nighttime low | 27°C / 80°F | |
| Rainfall | 320 mm / 12.6 in | ⛈ soaked |
| Rainy days | 29 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 9.6 h/day | |
| Daylight | 12.6 h | |
| Wind | 10 km/h / 6 mph | |
| Air quality (US AQI) | 41 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Sihanoukville in May — FAQ
- Is May a good time to visit Sihanoukville?
- May in Sihanoukville: hot, soaked, with clean air — fine if you can take 29 rainy days. It ranks #7 of 12 months for Sihanoukville on SeasonMap's comfort score (70/100).
- What is the weather like in Sihanoukville in May?
- In May, Sihanoukville averages a daily high of 30.1°C and a low of 26.6°C, with about 320.2 mm of rain over roughly 28.8 rainy days.
- What is the air quality in Sihanoukville in May?
- Sihanoukville has a mean US Air Quality Index of about 41 in May.