Weather in Ushuaia in July

The month to avoid. Of the twelve, July is the one to avoid. Highs sit at 2.7 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

July ranks 12 of 12 — near the bottom of Ushuaia's year. February is the month that works, and the swing between the two is 24 points, which is a different holiday rather than a slightly better one.

This is persistent light rain rather than storms: 17 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 2.7 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: 20 nights drop below freezing, so anything left outside stays frozen; the day barely swings — 3.7 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 7.8 °C and the coldest night fell to -8.2 °C.

July is one of the reliable ones — rainfall has stayed between 31 mm and 72 mm across all twenty years, a narrow enough band that the 50 mm average is something you can plan against rather than merely quote.

Wind sits around 17.5 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 92%, which at 2.7 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How July sits in the year

Temperatures hold steady either side: 3.1 °C in June, 2.7 here, 3.6 in August. Nothing about the timing within the month matters much.

Daylight in July

July sits at the dark end of Ushuaia's year — 7.7 hours of daylight against 17.3 at midsummer, gaining 1.1 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

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

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

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

July in Ushuaia versus nearby

If Ushuaia is one option among several, the nearby comparison is worth making. Puerto Montt is a better bet in July — 7.2 °C warmer, 2 days more rain. Mar del Plata is a better bet in July — 8.4 °C warmer, 7 days less rain.

So: July is a compromise. February is 24 points better and is what Ushuaia is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Ushuaia

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