Ushuaia weather in September
September in Ushuaia: cold, a little rain, with clean air — one of the best months to visit.
#1 of 12 months in Ushuaia · #106 of 604 destinations to visit in September · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Ushuaia climate normals — September
| Daytime high | 5°C / 40°F | 🧥 cold |
|---|---|---|
| Nighttime low | -1°C / 31°F | |
| Feels like (high) | 1°C / 34°F | |
| Rainfall | 46 mm / 1.8 in | 🌦 some rain |
| Rainy days | 13 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | -1°C / 30°F | |
| Sunshine | 8.1 h/day | |
| Daylight | 11.7 h | |
| Wind | 13 km/h / 8 mph | |
| Snowfall | 23.1 cm / 9.1 in | |
| Air quality (US AQI) | 28 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Ushuaia?
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Ushuaia in September — FAQ
- Is September a good time to visit Ushuaia?
- September in Ushuaia: cold, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Ushuaia on SeasonMap's comfort score (89/100).
- What is the weather like in Ushuaia in September?
- In September, Ushuaia averages a daily high of 4.6°C and a low of -0.8°C, with about 45.6 mm of rain over roughly 12.6 rainy days.
- What is the air quality in Ushuaia in September?
- Ushuaia has a mean US Air Quality Index of about 28 in September.
- Does it snow in Ushuaia in September?
- Ushuaia sees roughly 23.1 cm of snowfall in September.