Measurements:
°C
°F
Cancun
80°F
W 7 mph
Feels like: 86°F
Precip: 0%
World Resorts Mexico Cancun Weather

Cancun Sea Water Temperature

Current Sea Water Temperature:
+85.2°F
Maximum Sea Water Temperature in December: 86.2°F
Minimum Sea Water Temperature in December: 82.0°F
Average water temperature in December: 84.4°F

Sea Water Temperature for the Last 10 Days:

December 13 85.2°F December 08 86.0°F
December 12 85.8°F December 07 86.0°F
December 11 85.8°F December 06 86.2°F
December 10 85.4°F December 05 86.2°F
December 09 86.0°F December 04 85.8°F

When is the Warmest Sea for Cancun?

According to our data for the last three years for Cancun the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Cancun was 89.3°F. The maximum and minimum values were 88.8°F and 90.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Cancun was 88.8°F. The maximum and minimum values were 88.2°F and 89.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Cancun was 88.4°F. The maximum and minimum values were 87.4°F and 89.8°F respectively.

Best Time to Visit Cancun
The most sunny months:
July 15 days
April 15 days
May 14 days
The most warm months:
August 93.1 °F
July 93.0 °F
September 91.7 °F
Warmest sea temperature:
August 89.0 °F
September 88.7 °F
July 88.2 °F
The most cold months:
January 82.1 °F
February 84.0 °F
December 84.3 °F
The most rainy months:
October 8 days
September 8 days
June 7 days
The most windy months:
March 11 mph
April 11 mph
May 11 mph

Cancun on the Weather Map

24 Hours Weather Forecast
Cancun
Local time: 02:56
13 dec, saturday
0300 80°F
W
7 mph
0600 80°F
W
4 mph
0900 80°F
SW
2 mph
1200 82°F
SW
7 mph
1500 84°F
SW
7 mph
1800 82°F
SW
7 mph
2100 82°F
W
8 mph
14 dec, sunday
0000 80°F
W
8 mph