What is the weather like in Chiang Rai vs Vientiane in September?

In September, Chiang Rai averages 32°C high / 24°C low with about 272 mm of rain; Vientiane averages 33°C high / 24°C low with about 306 mm.

Chiang Rai vs Vientiane in September

Chiang Rai is the better pick in September — 50 vs 43 on SeasonMap's comfort score. Chiang Rai is sweltering, soaked, clean air, while Vientiane is sweltering, soaked, clean air.

Chiang Rai vs Vientiane — September climate, side by side

	🇹🇭 Chiang Rai	🇱🇦 Vientiane
Comfort score	50/100 (D)	43/100 (F)
Feels-like high	38°C	40°C
Avg high / low	32° / 24°	33° / 24°
Rainfall	272 mm	306 mm
Rainy days	24	25
Humidity	85%	85%
Air quality (AQI)	38	37

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

Month by month

Chiang Rai vs Vientiane in September — FAQ

Is September better in Chiang Rai or Vientiane?: Chiang Rai is the better pick in September — 50 vs 43 on SeasonMap's comfort score. Chiang Rai is sweltering, soaked, clean air, while Vientiane is sweltering, soaked, clean air.
What is the weather like in Chiang Rai vs Vientiane in September?: In September, Chiang Rai averages 32°C high / 24°C low with about 272 mm of rain; Vientiane averages 33°C high / 24°C low with about 306 mm.