Siem Reap weather in April
April in Siem Reap: sweltering, a little rain — a good time to visit.
#7 of 12 months in Siem Reap · #542 of 604 destinations to visit in April · comfort 62/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Siem Reap climate normals — April
| Daytime high | 34°C / 93°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 26°C / 79°F | |
| Feels like (high) | 40°C / 104°F | |
| Rainfall | 70 mm / 2.8 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 23°C / 74°F | |
| Sunshine | 10.9 h/day | |
| Daylight | 12.4 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 77 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Siem Reap in April — FAQ
- Is April a good time to visit Siem Reap?
- April in Siem Reap: sweltering, a little rain — a good time to visit. It ranks #7 of 12 months for Siem Reap on SeasonMap's comfort score (62/100).
- What is the weather like in Siem Reap in April?
- In April, Siem Reap averages a daily high of 34.1°C and a low of 26.2°C, with about 70.1 mm of rain over roughly 11.4 rainy days.
- What is the air quality in Siem Reap in April?
- Siem Reap has a mean US Air Quality Index of about 77 in April.