Weather in Mérida in January

Prime time. January is about as good as Mérida gets. Highs average 29.2 °C, lows 18.6 °C, and rain falls on 6 days — nothing in the month is working against you.

January is the highest-scoring month of the twelve. The nearest rival is December, and the month at the other end of the year is June.

Rain falls on only 6 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for 29.2 °C days and 18.6 °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: 14 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest January day reached 35.6 °C and the coldest night fell to 12.7 °C, and the wettest single day dropped 38 mm — roughly 115% of the month's rain in one day.

January is moderately variable: 1 mm in the driest year against 80 mm in the wettest, around an average of 33 mm. Roughly two Januarys in three land near that average, and the third does something else entirely.

Wind is light at 0.9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 69%.

How January sits in the year

Temperatures hold steady either side: 29.5 °C in December, 29.2 here, 31.4 in February. Nothing about the timing within the month matters much.

Daylight in January

January sits at the dark end of Mérida's year — 11 hours of daylight against 13.4 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 24.2 °C in January — 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

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.

January in Mérida versus nearby

If Mérida is one option among several, the nearby comparison is worth making. Cancún is close enough to be a coin toss — 2.8 °C cooler, 4 days more rain. Key West is a better bet in January — 6.5 °C cooler, 1 day less rain.

So: January is the answer for Mérida. If it is booked out or priced out, December is the next best thing at 1 points behind, and June is the month to keep off the shortlist.

Every month in Mérida

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