Weather in Cancun in March

How March compares

March is the 8th warmest month of the year in Cancun and ranks 33rd of 134 destinations we compare for March - see where else is hot in March. Within Mexico it is 5th of 5 (Mexico in March). Against London's average high of 10.5°C in March, Cancun is 16.4°C warmer by day and 19.9°C warmer at night.

Daytime and night-time in March

The typical March day in Cancun peaks at 26.9°C, but that is an average: the warmest 10% of days reach 28.6°C or more. About 87% of days top 25°C and 1 in 200 pass 30°C. Nights average 23.2°C; one night in ten drops to 20.7°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest March day here reached 30.3°C (2010-03-12) and the coldest night 15.4°C (1996-03-11).

Rain in March

Some rain (4-8 rainy days): about 7 days with 1 mm or more, 33 mm in total. Year to year it varies a lot - the wettest March was 1993 with 85 mm, the driest 1991 with 5 mm. Humidity averages 72%.

Sea temperature in March

The sea averages 26.0°C - warm enough to swim (22°c+). Depending on the year it ranges from 25.5°C to 26.4°C. For the warmest sea here, come in September (28.9°C).

Sunshine and daylight

Around 7.3 hours of sunshine a day (estimated from cloud cover), 11.9 hours of daylight: the sun rises about 06:56 and sets about 18:57 local time in mid-March. Average cloud cover is 38%.

Is March a good time to visit Cancun?

Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Cancun on our scoring are April, March, February; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Warm days, with little cooling after dark

March suits travellers who like consistent warmth but do not want their holiday built around extreme heat. Days reach 25°C on 87% of occasions, making lightweight clothing a sensible starting point. Humidity averages 72%, though, so leave room for shade and a slower pace around midday rather than assuming the air will feel dry and mild. Evenings stay warm, with an average night low of 23.2°C; you are unlikely to need heavy layers for sitting outside. A light extra layer is still sensible if you feel the cold, as cooler nights can dip below the usual range. Choose breathable clothes rather than a suitcase of heavier spring outfits.

Good swimming weather, but not cloudless every day

The sea is warm enough for swimming, so March works well if getting into the water matters as much as sitting beside it. There are about 7.3 hours of sunshine within 11.9 hours of daylight, leaving plenty of scope for outdoor time without implying clear skies all day. Rain is a possibility rather than a reason to rule the month out: keep plans flexible and pack a light waterproof. The monthly pattern does not tell you when showers will arrive or how long they will last, so avoid relying on a fixed dry spell each afternoon. This is a good fit for travellers happy to adjust their beach time around the day's weather.