Weather in Mérida in March

A good month. March is a solid month to be in Mérida. Highs average 33.6 °C, lows 20.9 °C, and rain falls on 4 days — nothing in the month is working against you.

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

Rain falls on only 4 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for 33.6 °C days and 20.9 °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: 12 days clear 35 °C, so a serious heatwave is normal rather than notable. Across the twenty years measured, the hottest March day reached 39.9 °C and the coldest night fell to 11.8 °C.

March is moderately variable: 3 mm in the driest year against 52 mm in the wettest, around an average of 19 mm. Roughly two Marchs in three land near that average, and the third does something else entirely.

Wind is light at 1.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 59%.

How March sits in the year

The month is on the way up: 2.2 °C warmer than February, and April adds another 2.3 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in March

12 hours of daylight, gaining 0.6 hours across the month. That is between Mérida's extremes of 13.4 and 10.9 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 24.5 °C in March — warm enough to stay in as long as you like. The sea peaks at 29.1 °C in August and bottoms out at 24 °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

Shoulder. The value months — prices ease off and you get the place closer to itself.

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

March in Mérida versus nearby

If Mérida is one option among several, the nearby comparison is worth making. Cancún is a better bet in March — 5.4 °C cooler, 2 days more rain. Key West is a better bet in March — 9.6 °C cooler, 1 day more rain.

So: March works, with January the better month by 15 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Mérida

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