What is the weather like in Koh Rong vs Siem Reap in September?

In September, Koh Rong averages 29°C high / 26°C low with about 545 mm of rain; Siem Reap averages 31°C high / 25°C low with about 254 mm.

Koh Rong vs Siem Reap in September

Koh Rong and Siem Reap are nearly tied in September — 51 vs 49 on SeasonMap's comfort score. Koh Rong is sweltering, soaked, clean air; Siem Reap is sweltering, soaked, clean air.

Koh Rong vs Siem Reap — September climate, side by side

	🇰🇭 Koh Rong	🇰🇭 Siem Reap
Comfort score	51/100 (D)	49/100 (F)
Feels-like high	35°C	37°C
Avg high / low	29° / 26°	31° / 25°
Rainfall	545 mm	254 mm
Rainy days	29	27
Humidity	88%	86%
Air quality (AQI)	37	33

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Koh Rong vs Siem Reap in September — FAQ

Is September better in Koh Rong or Siem Reap?: Koh Rong and Siem Reap are nearly tied in September — 51 vs 49 on SeasonMap's comfort score. Koh Rong is sweltering, soaked, clean air; Siem Reap is sweltering, soaked, clean air.
What is the weather like in Koh Rong vs Siem Reap in September?: In September, Koh Rong averages 29°C high / 26°C low with about 545 mm of rain; Siem Reap averages 31°C high / 25°C low with about 254 mm.