What is the weather like in Ko Samui vs Phu Quoc in September?

In September, Ko Samui averages 32°C high / 25°C low with about 141 mm of rain; Phu Quoc averages 30°C high / 25°C low with about 412 mm.

Ko Samui vs Phu Quoc in September

Ko Samui is the better pick in September — 73 vs 51 on SeasonMap's comfort score. Ko Samui is sweltering, rainy, clean air, while Phu Quoc is sweltering, soaked, clean air.

Ko Samui vs Phu Quoc — September climate, side by side

	Ko Samui	Phu Quoc
Comfort score	73/100 (B)	51/100 (D)
Feels-like high	37°C	34°C
Avg high / low	32° / 25°	30° / 25°
Rainfall	141 mm	412 mm
Rainy days	22	26
Humidity	79%	83%
Air quality (AQI)	27	30

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

Ko Samui vs Phu Quoc in September — FAQ

Is September better in Ko Samui or Phu Quoc?: Ko Samui is the better pick in September — 73 vs 51 on SeasonMap's comfort score. Ko Samui is sweltering, rainy, clean air, while Phu Quoc is sweltering, soaked, clean air.
What is the weather like in Ko Samui vs Phu Quoc in September?: In September, Ko Samui averages 32°C high / 25°C low with about 141 mm of rain; Phu Quoc averages 30°C high / 25°C low with about 412 mm.