Siem Reap weather in October
October in Siem Reap: sweltering, soaked, with clean air — a fair time to visit.
#11 of 12 months in Siem Reap · #572 of 604 destinations to visit in October · comfort 54/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Siem Reap climate normals — October
| Daytime high | 30°C / 85°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 24°C / 75°F | |
| Feels like (high) | 36°C / 97°F | |
| Rainfall | 260 mm / 10.2 in | ⛈ soaked |
| Rainy days | 23 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 24°C / 74°F | |
| Sunshine | 8.1 h/day | |
| Daylight | 11.8 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Siem Reap?
Loading map…
Siem Reap in October — FAQ
- Is October a good time to visit Siem Reap?
- October in Siem Reap: sweltering, soaked, with clean air — a fair time to visit. It ranks #11 of 12 months for Siem Reap on SeasonMap's comfort score (54/100).
- What is the weather like in Siem Reap in October?
- In October, Siem Reap averages a daily high of 29.7°C and a low of 23.8°C, with about 259.8 mm of rain over roughly 23.4 rainy days.
- What is the air quality in Siem Reap in October?
- Siem Reap has a mean US Air Quality Index of about 39 in October.