Measurements:
°C
°F
Cancun
88°F
NW 9 mph
Feels like: 98°F
Precip: 42%
World Resorts Mexico Cancun Weather

Cancun Sea Water Temperature

Current Sea Water Temperature:
+89.4°F
Maximum Sea Water Temperature in September: 91.2°F
Minimum Sea Water Temperature in September: 86.0°F
Average water temperature in September: 88.7°F

Sea Water Temperature for the Last 10 Days:

September 28 89.4°F September 23 89.2°F
September 27 89.0°F September 22 89.2°F
September 26 89.0°F September 21 90.0°F
September 25 89.6°F September 20 89.6°F
September 24 89.6°F September 19 89.8°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: 2026 2025 2024

The average sea surface temperature in August 2026 for Cancun was 89.2°F. The maximum and minimum values were 87.6°F and 90.2°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Cancun was 89.6°F. The maximum and minimum values were 89.0°F and 90.6°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Cancun was 88.4°F. The maximum and minimum values were 87.0°F and 89.2°F respectively.

Best Time to Visit Cancun
The most sunny months:
July 15 days
April 15 days
May 13 days
The most warm months:
August 93.0 °F
July 92.9 °F
September 91.6 °F
Warmest sea temperature:
August 89.0 °F
September 88.7 °F
July 88.2 °F
The most cold months:
January 82.2 °F
February 83.8 °F
December 84.4 °F
The most rainy months:
October 8 days
September 7 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: 17:01
28 sep, monday
1800 88°F
NW
9 mph
2100 86°F
NW
9 mph
29 sep, tuesday
0000 86°F
NW
11 mph
0300 88°F
NW
11 mph
0600 86°F
NW
8 mph
0900 86°F
NW
9 mph
1200 90°F
NW
15 mph
1500 86°F
NW
14 mph