Viña del Mar weather in September
September in Viña del Mar: nice, dry, with clean air — a great time to visit.
#8 of 12 months in Viña del Mar · #546 of 897 destinations to visit in September · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Viña del Mar in September
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Viña del Mar climate normals — September
| Daytime high | 17°C / 63°F | 😎 nice |
|---|---|---|
| Nighttime low | 9°C / 48°F | |
| Rainfall | 15 mm / 0.6 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 9°C / 49°F | |
| Sunshine | 10.2 h/day | |
| Daylight | 11.9 h | |
| Wind | 19 km/h / 12 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Viña del Mar in September — FAQ
- Is September a good time to visit Viña del Mar?
- September in Viña del Mar: nice, dry, with clean air — a great time to visit. It ranks #8 of 12 months for Viña del Mar on SeasonMap's comfort score (79/100).
- What is the weather like in Viña del Mar in September?
- In September, Viña del Mar averages a daily high of 17.2°C and a low of 8.9°C, with about 15 mm of rain over roughly 1.2 rainy days.
- What is the air quality in Viña del Mar in September?
- Viña del Mar has a mean US Air Quality Index of about 38 in September.