Ushuaia is typically chill in September.

Maximum temperatures go up compared to the previous month from +43°F to +46°F. The minimum temperature also goes up from +30°F to +34°F.

Pack a jumper and a jacket as there will be cooler temperatures.

Take a look at how September is compared to other months in Ushuaia:

September often has better weather than August. It’s getting warmer as September arrives. The average maximum temperature goes up from +43°F to +46°F 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 84%. 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.

The climate in Ushuaia in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1986 (+47°F) and the highest in 1998 (+52°F). The driest year was 2002 with only 618 mm of rainfall, and the wettest year was 2006 with 878 mm.

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.