Monthly climate guide
Ushuaia weather in September
September in Ushuaia is typically cold, with average daytime highs around 4°C (39°F) and night-time lows near -1°C (31°F). The month usually brings about 47 mm of rain (fairly dry) and is often cloudy. Daytime highs are 2°C warmer than August and 3°C cooler than October.
What stands out in September
- Days and nights are close, only about 5°C apart.
- Nights often drop below freezing (average low -1°C), so expect frost and icy mornings.
- Ushuaia is usually about 2°C warmer than El Calafate, 560 km away, in September.
- In Ushuaia, September is early spring — the seasons are reversed south of the equator.
Avg high
4°C
39°F
Avg low
-1°C
31°F
Rainfall
47 mm
fairly dry
Humidity
87%
relative
Sky
78%
cloud · often cloudy
Ushuaia weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 10°C / 51°F | 4°C / 39°F | 75 mm | 79% | 84% |
| February | 11°C / 51°F | 4°C / 39°F | 78 mm | 80% | 81% |
| March | 9°C / 49°F | 3°C / 38°F | 64 mm | 84% | 80% |
| April | 6°C / 43°F | 2°C / 35°F | 53 mm | 89% | 76% |
| May | 4°C / 39°F | 0°C / 32°F | 51 mm | 92% | 73% |
| June | 2°C / 35°F | -2°C / 29°F | 59 mm | 92% | 74% |
| July | 1°C / 34°F | -3°C / 27°F | 45 mm | 92% | 74% |
| August | 2°C / 35°F | -2°C / 28°F | 47 mm | 91% | 76% |
| September | 4°C / 39°F | -1°C / 31°F | 47 mm | 87% | 78% |
| October | 7°C / 44°F | 1°C / 33°F | 41 mm | 82% | 81% |
| November | 9°C / 47°F | 2°C / 36°F | 58 mm | 79% | 84% |
| December | 10°C / 49°F | 3°C / 37°F | 73 mm | 78% | 84% |
What to pack for September
- A proper insulated winter coat
- A hat, scarf and gloves
- Thermal base layers and warm, grippy boots for icy mornings
- A small travel umbrella, just in case
Is September a good time to visit Ushuaia?
Compare the months in the chart above to find your ideal window.
Best time to visit Ushuaia →Other Argentina cities in September
Cite or embed this data
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Ushuaia weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/argentina/ushuaia/september
<a href="https://weathercompare.eu/weather/argentina/ushuaia/september">Ushuaia weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/argentina/ushuaia" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Ushuaia weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/argentina/ushuaia/september">Ushuaia weather in September</a> – WeatherCompare</p>
Ushuaia in September: quick answers
Is September a good time to visit Ushuaia?
September is cool in Ushuaia, with highs around 4°C. Better for museums and city walks than the beach, and usually quieter.
How warm is Ushuaia in September?
Average highs are about 4°C (39°F) and average lows about -1°C (31°F), based on 10 years of daily data.
Does it rain a lot in Ushuaia in September?
Ushuaia typically gets around 47 mm of rain in September — fairly dry.
Figures are long-term averages for the area around Ushuaia (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.