Weather in Buenos Aires in July

A good month. July is a solid month to be in Buenos Aires. Highs sit at 13.2 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

Buenos Aires barely has seasons. July scores 66 out of 100 against a best of 83 in April — a gap small enough that the month you choose matters far less here than the week you choose. Worth keeping in perspective: July is the weakest month of Buenos Aires's year and it is still a perfectly good one. The downside here is small.

Rain falls on only 6 days, so an itinerary with no wet-weather fallback is a reasonable risk. Layers, and a genuinely waterproof outer — at 13.2 °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: the day barely swings — 4.5 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 21.4 °C and the coldest night fell to 3 °C, and the wettest single day dropped 60 mm — roughly 83% of the month's rain in one day.

July is moderately variable: 10 mm in the driest year against 154 mm in the wettest, around an average of 72 mm. Roughly two Julys in three land near that average, and the third does something else entirely.

Wind sits around 16.7 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 81%, which at 13.2 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How July sits in the year

This is a turning point in the year — June and August sit on opposite sides of it, so the month contains the change rather than following it.

Daylight in July

July sits at the dark end of Buenos Aires's year — 10 hours of daylight against 14.5 at midsummer, gaining 0.5 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: 18.9 °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 Buenos Aires versus nearby

If Buenos Aires is one option among several, the nearby comparison is worth making. Rosario is a better bet in July — 3.3 °C warmer, 2 days less rain. Mar del Plata is the weaker option in July — 2.1 °C cooler, 4 days more rain.

So: July works, with April the better month by 17 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Buenos Aires

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