Weather in Ushuaia in September 2025
Average weather
Average temperature in Ushuaia in September
Going from a maximum of +12°C during the day to a minimum of -4°C during the night, the temperature in September averages around +7°C.
The average maximum temperature goes up 38% by the end of the month, compared with the beginning of the month, from +6°C to +12°C.
Is Ushuaia warm or cold in September?
Ushuaia is typically cool in September.
Maximum temperatures go up compared to the previous month from +6°C to +8°C. The minimum temperature also goes up from -1°C to +1°C.
Pack a sweater and a jacket as there will be cooler temperatures.
Take a look at how September is compared to other months in Ushuaia:
Climate in Ushuaia in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +6°C | +8°C | +10°C | ||||
| Min. temperature | ||||||
| -13°C | -12°C | -4°C | ||||
| Max. temperature | ||||||
| +14°C | +16°C | +19°C | ||||
| Rainfall | ||||||
| 42 mm | 42 mm | 54 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 4 m/s | ||||
| Humidity | ||||||
| 88% | 85% | 80% | ||||
| Air pressure | ||||||
| 1001 HPa | 1003 HPa | 999 HPa | ||||
| Sunny days | ||||||
| 1 | 2 | 1 | ||||
| Cloudy days | ||||||
| 10 | 9 | 8 | ||||
| Rainy days | ||||||
| 12 | 14 | 20 | ||||
| Snowy days | ||||||
| 8 | 5 | 2 | ||||
September often has better weather than August. It’s getting warmer as September arrives. The average maximum temperature goes up from +6°C to +8°C during the day. The rainfall amount in September stays the same as in the previous month with a 42 mm of total precipitation. It feels drier, as humidity decreases from 88% to 85%. The average wind speed doesn’t change much during September, staying around 3 m/s. The good news is there are likely to be more sunny days in September, from 1 to 2.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 5 m/s getting up to 12 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Ushuaia is gradually decreasing during September, going from 5 m/s to 3 m/s over the course of the month.
Rain
How was the weather last September in Ushuaia?
Climate Change over Years
The climate in Ushuaia in September has not changed much over the last 43 years.
The average temperature was the lowest in 1986 (+8°C) and the highest in 1998 (+11°C). The driest year was 2002 with only 618 mm of rainfall, and the wettest year was 2006 with 878 mm.
FAQ
Is September a good time to visit Ushuaia?
Can you sunbathe in Ushuaia in September?
Is Ushuaia rainy in September?
Is it sunny in Ushuaia in September?
Other cities in Argentina
Monthly weather in Ushuaia
Source of the data
For this page, we’ve looked at the typical weather in Ushuaia, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.