Cancun weather in May 2026

Q: How hot is it in Cancun in May?

Daytime temperatures usually reach 32°C in Cancun in May with very high heat and humidity, falling to 22°C at night.

Q: How sunny is it in Cancun in May?

There are normally 8 hours of bright sunshine each day in Cancun in May - that's 61% of daylight hours.

Q: How warm is the sea around Cancun in May?

The average sea temperature around Cancun in May is 27°C.

Q: Does it rain in Cancun in May?

There are usually 7 days with some rain in Cancun in May and the average monthly rainfall is 109mm.

Expect daytime maximum temperatures of 32°C in Cancun, Mexico's Caribbean Coast in May and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 109 mm of rainfall in the month.

32
32°C max day temperature
8
8 hours of sunshine per day
7
7 days with some rainfall
22
22°C min night temperature
13
13 hours of daylight per day
VH
Very High heat & humidity
109
109 mm of monthly rainfall
11
11+ (Extreme) UV index
27
27°C sea temperature

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The May weather guide for Mexico's Caribbean Coast (Cancun) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)