Weather in Antofagasta in January

Prime time. January is about as good as Antofagasta gets. Highs average 21.8 °C, lows 18.2 °C, and rain falls on 0 days — nothing in the month is working against you.

Antofagasta barely has seasons. January scores 100 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.

Rain is not a factor worth planning around this month. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average January reaches 30 °C; the day barely swings — 3.6 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest January day reached 25.6 °C and the coldest night fell to 15.6 °C.

January is dependably dry, and that reliability is the point: across the twenty years measured, the wettest January on record still only managed 14 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 Januarys brought 7 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.

Wind is light at 10.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 77%, high enough to notice on the warm days without dominating them.

How January sits in the year

Temperatures hold steady either side: 20.1 °C in December, 21.8 here, 22.5 in February. Nothing about the timing within the month matters much.

Daylight in January

January is at or near the longest days of Antofagasta's year: 13.4 hours of daylight, losing 0.4 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 21.7 °C in January — comfortable for a proper swim. This is the warmest the water gets all year.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, November is the trade worth considering — 5 points weaker on weather, and materially quieter.

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

January in Antofagasta versus nearby

If Antofagasta is one option among several, the nearby comparison is worth making. Salta is the weaker option in January — 8.9 °C warmer, 17 days more rain. Arica is the weaker option in January — 12 °C warmer, 1 day more rain.

So: January is the answer for Antofagasta. If it is booked out or priced out, March is the next best thing at 0 points behind, and August is the month to keep off the shortlist.

Every month in Antofagasta

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