World Resorts Cuba Cayo Guillermo Weather

Cayo Guillermo 14 Days Forecast

25.08
tue
Day
86°F
W 14 mph
Precip.
9%
Night
84°F
W 17 mph
Precip.
31%
26.08
wed
Day
86°F
W 16 mph
Precip.
20%
Night
84°F
W 19 mph
Precip.
23%
27.08
thu
Day
84°F
W 13 mph
Precip.
22%
Night
84°F
W 15 mph
Precip.
37%
28.08
fri
Day
86°F
W 16 mph
Precip.
16%
Night
84°F
W 16 mph
Precip.
25%
29.08
sat
Day
86°F
W 14 mph
Precip.
26%
Night
84°F
W 16 mph
Precip.
17%
30.08
sun
Day
86°F
W 14 mph
Precip.
9%
Night
84°F
W 17 mph
Precip.
63%
31.08
mon
Day
86°F
W 14 mph
Precip.
16%
Night
84°F
W 14 mph
Precip.
30%
01.09
tue
Day
84°F
W 9 mph
Precip.
56%
Night
84°F
W 14 mph
Precip.
42%
02.09
wed
Day
84°F
W 10 mph
Precip.
16%
Night
77°F
N 6 mph
Precip.
32%
03.09
thu
Day
82°F
W 4 mph
Precip.
7%
Night
84°F
NW 11 mph
Precip.
32%
04.09
fri
Day
84°F
W 12 mph
Precip.
15%
Night
84°F
W 17 mph
Precip.
36%
05.09
sat
Day
84°F
W 16 mph
Precip.
13%
Night
84°F
W 16 mph
Precip.
8%
06.09
sun
Day
84°F
W 13 mph
Precip.
6%
Night
84°F
SW 15 mph
Precip.
8%

Sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 86.8°F. The highest and lowest sea temperatures during the month were 87.8°F and 85.5°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 87.3°F. The highest and lowest sea temperatures during the month were 88.3°F and 86.5°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 86.0 °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
00:21
Cayo Guillermo
+84°F
W 17 mph
Feels like: +95°F
Precip.: 11%
Places in Cuba:
Name
°F
Varadero
+81°F
Havana
+86°F
Cayo Santa Maria
+84°F
Cayo Guillermo
+84°F
Cayo Coco
+77°F
Cayo Largo
+77°F
Matanzas
+77°F
Holguin
+79°F
Pinar del Rio
+77°F
Playa Esmeralda
+81°F
Playa Blanca
+81°F
Playa Santa Lucia
+82°F
Santa Maria
+84°F
Santiago de Cuba
+77°F
Cienfuegos
+79°F
all places
24 Hours Forecast
Cayo Guillermo
Local time: 00:21
August 25, tuesday
0300
84°F
W
15 mph
0600
84°F
W
14 mph
0900
84°F
W
14 mph
1200
86°F
W
14 mph
1500
86°F
W
19 mph
1800
84°F
W
19 mph
2100
84°F
W
19 mph
August 26, wednesday
0000
84°F
W
17 mph
Units of measurement: °C / °F