Weather in Arica in August

A good month. August is a solid month to be in Arica. Highs average 32.8 °C, lows 19.7 °C, and rain falls on 0 days — nothing in the month is working against you.

August ranks 3 of 12 in Arica. Only June scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain is not a factor worth planning around this month. Pack for 32.8 °C days and 19.7 °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: 5 days clear 35 °C, so a serious heatwave is normal rather than notable. Across the twenty years measured, the hottest August day reached 38.8 °C and the coldest night fell to 15.2 °C.

August is dependably dry, and that reliability is the point: across the twenty years measured, the wettest August on record still only managed 13 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 Augusts brought 4 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.

Wind is light at 7 km/h, so the temperature on the page is close to the temperature on your skin, and the air is dry at 40% humidity, which makes the heat far more bearable than the same figure somewhere humid — and dehydrates you faster than you expect.

How August sits in the year

Temperatures hold steady either side: 32 °C in July, 32.8 here, 33.1 in September. Nothing about the timing within the month matters much.

Daylight in August

August sits at the dark end of Arica's year — 11.5 hours of daylight against 13.2 at midsummer, gaining 0.4 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 17.1 °C in August — cold — a quick dip rather than a swim, and a wetsuit if you are in for longer. The sea peaks at 24.3 °C in February and bottoms out at 17.1 °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

Peak season. Expect the highest prices of the year and to be booking well ahead.

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

August in Arica versus nearby

If Arica is one option among several, the nearby comparison is worth making. Arequipa is a better bet in August — 7.5 °C cooler, the same number of rain days. Antofagasta is a better bet in August — 16.8 °C cooler, the same number of rain days.

So: August is effectively as good as it gets here — 2 points behind June, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Arica

See all twelve months in Arica, or where else to go in August.