Weather in Puntarenas in March

A hard month. March is a hard month in Puntarenas, and worth planning around. Daytime highs average 35.4 °C and the afternoon is not negotiable — outdoor plans move to early morning or evening.

March ranks 5 of 12 in Puntarenas: past the worst of the year but short of December, which is the month to book if the dates are open.

Rain falls on only 2 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for heat management rather than style: shade, water, and a schedule that gives up on the middle of the day.

What the averages hide

Averages flatten a month, and this one hides a few things: 22 days of the month clear 35 °C — that is not a heatwave, it is the month. Across the twenty years measured, the hottest March day reached 38.4 °C and the coldest night fell to 22.5 °C.

March is moderately variable: 2 mm in the driest year against 25 mm in the wettest, around an average of 10 mm. Roughly two Marchs in three land near that average, and the third does something else entirely.

Wind is light at 10.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 61%.

How March sits in the year

Temperatures hold steady either side: 34.1 °C in February, 35.4 here, 35.2 in April. Nothing about the timing within the month matters much. Rain is the thing that moves: April brings 7 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in March

Puntarenas sits close enough to the equator that daylight barely moves all year — 12.1 hours in March, against a range of just 1.2 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 29 °C in March — warm enough that the water offers no relief from the heat. This is the warmest the water gets all year.

How busy it gets

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

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

March in Puntarenas versus nearby

If Puntarenas is one option among several, the nearby comparison is worth making. San José is a better bet in March — 7.5 °C cooler, 5 days more rain. Liberia is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: March is a compromise. December is 22 points better and is what Puntarenas is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Puntarenas

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