Measurements:
°C
°F
CURRENT WEATHER
16:32
Cayo Guillermo
88°F
W 19 mph
Feels like: 100°F
Precip: 21%
World Resorts Cuba Cayo Guillermo Weather

7 Day Weather Forecast

10.03
sat
DAY
88°F
W 16 mph
precip
22%
NIGHT
88°F
W 19 mph
precip
46%
10.04
sun
DAY
88°F
W 13 mph
precip
8%
NIGHT
86°F
W 15 mph
precip
9%
10.05
mon
DAY
88°F
W 9 mph
precip
7%
NIGHT
86°F
W 12 mph
precip
9%
10.06
tue
DAY
86°F
W 6 mph
precip
7%
NIGHT
86°F
W 8 mph
precip
67%
10.07
wed
DAY
84°F
W 4 mph
precip
13%
NIGHT
84°F
W 9 mph
precip
67%
10.08
thu
DAY
86°F
W 5 mph
precip
9%
NIGHT
86°F
W 10 mph
precip
7%
10.09
fri
DAY
88°F
W 11 mph
precip
7%
NIGHT
86°F
W 14 mph
precip
11%

Cayo Guillermo Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Cayo Guillermo was 29.2°F. The maximum and minimum values were 28.1°F and 30.6°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 89.9 °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 5 days
The most windy months:
March 14 mph
November 14 mph
December 14 mph
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