What is the weather like in Santiago vs Viña del Mar in September?

In September, Santiago averages 21°C high / 5°C low with about 42 mm of rain; Viña del Mar averages 20°C high / 7°C low with about 14 mm.

Santiago vs Viña del Mar in September

Santiago is the better pick in September — 83 vs 79 on SeasonMap's comfort score. Santiago is nice, a little rain, while Viña del Mar is nice, dry, clean air.

Santiago vs Viña del Mar — September climate, side by side

	🇨🇱 Santiago	🇨🇱 Viña del Mar
Comfort score	83/100 (A)	79/100 (B)
Feels-like high	20°C	19°C
Avg high / low	21° / 5°	20° / 7°
Rainfall	42 mm	14 mm
Rainy days	6	2
Humidity	66%	78%
Air quality (AQI)	96	38

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

Month by month

Santiago vs Viña del Mar in September — FAQ

Is September better in Santiago or Viña del Mar?: Santiago is the better pick in September — 83 vs 79 on SeasonMap's comfort score. Santiago is nice, a little rain, while Viña del Mar is nice, dry, clean air.
What is the weather like in Santiago vs Viña del Mar in September?: In September, Santiago averages 21°C high / 5°C low with about 42 mm of rain; Viña del Mar averages 20°C high / 7°C low with about 14 mm.