Measurements:
°C
°F
CURRENT WEATHER
08:39
Cayo Guillermo
90°F
W 14 mph
Feels like: 102°F
Precip: 7%
World Resorts Cuba Cayo Guillermo Weather

7 Day Weather Forecast

08.23
sun
DAY
92°F
W 14 mph
precip
5%
NIGHT
88°F
W 17 mph
precip
33%
08.24
mon
DAY
88°F
W 15 mph
precip
6%
NIGHT
88°F
W 19 mph
precip
20%
08.25
tue
DAY
90°F
W 16 mph
precip
7%
NIGHT
88°F
W 19 mph
precip
18%
08.26
wed
DAY
90°F
W 16 mph
precip
19%
NIGHT
88°F
W 16 mph
precip
22%
08.27
thu
DAY
88°F
W 13 mph
precip
13%
NIGHT
88°F
W 14 mph
precip
54%
08.28
fri
DAY
90°F
W 15 mph
precip
12%
NIGHT
88°F
W 19 mph
precip
11%
08.29
sat
DAY
90°F
W 16 mph
precip
13%
NIGHT
88°F
W 17 mph
precip
7%

Cayo Guillermo Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Cayo Guillermo was 30.4°F. The maximum and minimum values were 29.7°F and 31.0°F respectively.

Cayo Guillermo on the Weather Map

Best Time to Visit Cayo Guillermo
The most sunny months:
April 14 days
March 13 days
May 12 days
The most warm months:
August 91.0 °F
July 90.5 °F
September 90.0 °F
Warmest sea temperature:
September 90.0 °F
August 90.0 °F
July 89.2 °F
The most cold months:
January 79.5 °F
February 80.4 °F
March 81.4 °F
The most rainy months:
October 7 days
May 6 days
August 6 days
The most windy months:
March 14 mph
November 14 mph
December 14 mph
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