Weather in Antofagasta in July

Prime time. July is about as good as Antofagasta gets. Highs average 16 °C, lows 12.1 °C, and rain falls on 0 days — nothing in the month is working against you.

Antofagasta barely has seasons. July scores 87 out of 100 against a best of 100 in January — 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 Antofagasta's year and it is still a perfectly good one. The downside here is small.

Rain is not a factor worth planning around this month. Pack for 16 °C days and 12.1 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 3.9 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 22.7 °C and the coldest night fell to 9.9 °C.

July is dependably dry, and that reliability is the point: across the twenty years measured, the wettest July on record still only managed 7 mm, and the driest managed 0 mm. There is no meaningful variability to plan around, which makes this one of the few months anywhere that you can build a fixed outdoor itinerary against without a fallback. The wettest single day in twenty years of Julys brought 7 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.

Wind is light at 9.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 82%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 16.9 °C in June, 16 here, 16 in August. Nothing about the timing within the month matters much.

Daylight in July

July sits at the dark end of Antofagasta's year — 10.8 hours of daylight against 13.6 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 15.8 °C in July — cold — a quick dip rather than a swim, and a wetsuit if you are in for longer. The sea peaks at 22.4 °C in February and bottoms out at 15.3 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

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 Antofagasta versus nearby

If Antofagasta is one option among several, the nearby comparison is worth making. Salta is a better bet in July — 9.4 °C warmer, 1 day more rain. Arica is the weaker option in July — 16 °C warmer, 1 day more rain.

So: July works, with January the better month by 13 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Antofagasta

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