Cancun weather in August 2025

Expect 91°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Cancun in August. Check more long-term weather averages for Cancun in August before you book your next holiday to Mexico's Caribbean Coast in 2025/2026.

91
91°F max day temperature
7
7 hours of sunshine per day
13
13 days with some rainfall
73
73°F min night temperature
13
13 hours of daylight per day
VH
Very High heat & humidity
5.8
5.8 inches of monthly rainfall
11
11+ (Extreme) UV index
84
84°F sea temperature

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The August 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) | Imperial (°F)

More about Mexico's Caribbean Coast

How hot is it in Cancun in August?

Daytime temperatures usually reach 91°F in Cancun in August with very high heat and humidity, falling to 73°F at night.

How sunny is it in Cancun in August?

There are normally 7 hours of bright sunshine each day in Cancun in August - that's 55% of daylight hours.

How warm is the sea around Cancun in August?

The average sea temperature around Cancun in August is 84°F.

Does it rain in Cancun in August?

There are usually 13 days with some rain in Cancun in August and the average monthly rainfall is 5.8 inches.

What is the chance of a hurricane in Cancun in August?

On average less than 1 day in August in Cancun is likely to be affected by the passage of one or more tropical storms.

Cancun August sunrise & sunset times

Browse the sunrise and sunset times for Cancun in August 2025. Select a month to view Cancun sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Friday, 1st August 2025	06:21	19:26
Saturday, 16th August 2025	06:26	19:16
Sunday, 31st August 2025	06:31	19:04

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Caribbean Coast, Mexico - quick facts
Flight time^✝	10.5 hours
Time difference	UK -5 hours
Language(s)	Spanish
Currency	Mexican Peso
Electricity	A + B plug (127V)
Driving side	Right
Why visit?	Beaches Nature Nightlife
Tourist info	Quintana Roo Tourism Promotion Board