Weather in Antofagasta in March

Prime time. March is about as good as Antofagasta gets. Highs average 21.4 °C, lows 17.7 °C, and rain falls on 0 days — nothing in the month is working against you.

Antofagasta barely has seasons. March 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 March reaches 30 °C; the day barely swings — 3.7 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest March day reached 24.8 °C and the coldest night fell to 15.5 °C.

March is dependably dry, and that reliability is the point: across the twenty years measured, the wettest March on record still only managed 17 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 Marchs brought 12 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.

Wind is light at 10.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 80%, high enough to notice on the warm days without dominating them.

How March sits in the year

Temperatures hold steady either side: 22.5 °C in February, 21.4 here, 19.8 in April. Nothing about the timing within the month matters much.

Daylight in March

12.3 hours of daylight, losing 0.7 hours across the month. That is between Antofagasta's extremes of 13.6 and 10.7 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 21.4 °C in March — 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.

March in Antofagasta versus nearby

If Antofagasta is one option among several, the nearby comparison is worth making. Salta is the weaker option in March — 7.6 °C warmer, 14 days more rain. Arica is the weaker option in March — 12.9 °C warmer, 1 day more rain.

So: March is effectively as good as it gets here — 0 points behind January, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Antofagasta

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