Weather in Ushuaia in October

A hard month. October asks something of you. Go in knowing what. Highs sit at 8.4 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

October ranks 4 of 12 in Ushuaia: past the worst of the year but short of February, which is the month to book if the dates are open.

This is persistent light rain rather than storms: 15 wet days but only 0 heavy ones. It rarely cancels anything outright, and it rarely fully clears either. A jacket beats an umbrella. Layers, and a genuinely waterproof outer — at 8.4 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest October day reached 16.3 °C and the coldest night fell to -2.6 °C.

October is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest October on record still delivered 75 mm against 22 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 44 mm average is a reasonable planning figure, not a promise.

Wind sits around 19 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 82%, which at 8.4 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How October sits in the year

Temperatures hold steady either side: 6.2 °C in September, 8.4 here, 9.9 in November. Nothing about the timing within the month matters much.

Daylight in October

13.8 hours of daylight, gaining 2.2 hours across the month. That is between Ushuaia's extremes of 17.3 and 7.2 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 13.2 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Busy. Popular without being frantic; book the things you care about, improvise the rest.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

October in Ushuaia versus nearby

If Ushuaia is one option among several, the nearby comparison is worth making. Puerto Montt is a better bet in October — 5.9 °C warmer, the same number of rain days. Mar del Plata is a better bet in October — 7.8 °C warmer, 4 days less rain.

So: October is effectively as good as it gets here — 6 points behind February, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Ushuaia

See all twelve months in Ushuaia, or where else to go in October.