World Resorts Cuba Cayo Guillermo Weather

Cayo Guillermo 14 Days Forecast

04.08
tue
Day
86°F
W 14 mph
Precip.
9%
Night
86°F
W 16 mph
Precip.
8%
05.08
wed
Day
86°F
W 17 mph
Precip.
8%
Night
84°F
W 17 mph
Precip.
44%
06.08
thu
Day
86°F
W 17 mph
Precip.
29%
Night
82°F
NW 16 mph
Precip.
24%
07.08
fri
Day
84°F
W 12 mph
Precip.
18%
Night
84°F
W 17 mph
Precip.
21%
08.08
sat
Day
84°F
W 13 mph
Precip.
15%
Night
84°F
W 19 mph
Precip.
8%
09.08
sun
Day
84°F
W 17 mph
Precip.
18%
Night
84°F
W 19 mph
Precip.
12%
10.08
mon
Day
86°F
W 16 mph
Precip.
22%
Night
84°F
W 22 mph
Precip.
12%
11.08
tue
Day
86°F
W 20 mph
Precip.
12%
Night
84°F
W 20 mph
Precip.
9%
12.08
wed
Day
86°F
W 19 mph
Precip.
7%
Night
84°F
W 19 mph
Precip.
6%
13.08
thu
Day
86°F
W 17 mph
Precip.
16%
Night
84°F
W 19 mph
Precip.
18%
14.08
fri
Day
86°F
W 19 mph
Precip.
17%
Night
84°F
W 21 mph
Precip.
13%
15.08
sat
Day
84°F
W 22 mph
Precip.
15%
Night
84°F
W 21 mph
Precip.
13%
16.08
sun
Day
84°F
W 17 mph
Precip.
5%
Night
84°F
W 16 mph
Precip.
21%
17.08
mon
Day
84°F
W 11 mph
Precip.
8%
Night
84°F
W 16 mph
Precip.
9%

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 86.9°F. The highest and lowest sea temperatures during the month were 88.5°F and 85.8°F.

Air temperature in Cayo Guillermo, °F

Precipitation total in Cayo Guillermo, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Cayo Guillermo

Sunniest months:
April 14 days
March 13 days
May 12 days
Warmest months:
August 86.9 °F
July 86.4 °F
September 86.0 °F
Warmest sea temp:
September 86.0 °F
August 85.9 °F
July 85.3 °F
Coldest months:
January 76.6 °F
February 77.4 °F
March 78.3 °F
Rainiest months:
October 7 days
May 6 days
August 6 days
Windiest months:
March 14.7 mph
November 14.2 mph
December 14.0 mph

Cayo Guillermo on a weather map

Current weather
19:47
Cayo Guillermo
+86°F
W 18 mph
Feels like: +95°F
Precip.: 7%
Places in Cuba:
Name
°F
Varadero
+82°F
Havana
+79°F
Cayo Santa Maria
+86°F
Cayo Guillermo
+86°F
Cayo Coco
+82°F
Cayo Largo
+72°F
Matanzas
+75°F
Holguin
+75°F
Pinar del Rio
+72°F
Playa Esmeralda
+77°F
Playa Blanca
+77°F
Playa Santa Lucia
+82°F
Santa Maria
+86°F
Santiago de Cuba
+72°F
Cienfuegos
+75°F
all places
24 Hours Forecast
Cayo Guillermo
Local time: 19:47
August 04, tuesday
2100
86°F
W
18 mph
August 05, wednesday
0000
86°F
W
16 mph
0300
84°F
W
15 mph
0600
84°F
W
17 mph
0900
84°F
W
19 mph
1200
86°F
W
17 mph
1500
86°F
W
17 mph
1800
84°F
W
21 mph
Units of measurement: °C / °F