World Resorts Cuba Cayo Guillermo Weather

Cayo Guillermo 14 Days Forecast

14.09
mon
Day
84°F
W 12 mph
Precip.
7%
Night
84°F
W 16 mph
Precip.
16%
15.09
tue
Day
84°F
W 12 mph
Precip.
15%
Night
84°F
W 16 mph
Precip.
15%
16.09
wed
Day
84°F
W 14 mph
Precip.
31%
Night
84°F
W 16 mph
Precip.
18%
17.09
thu
Day
86°F
W 12 mph
Precip.
4%
Night
81°F
N 7 mph
Precip.
64%
18.09
fri
Day
82°F
W 6 mph
Precip.
18%
Night
82°F
N 5 mph
Precip.
18%
19.09
sat
Day
84°F
SE 8 mph
Precip.
24%
Night
81°F
N 6 mph
Precip.
57%
20.09
sun
Day
82°F
E 6 mph
Precip.
36%
Night
81°F
N 9 mph
Precip.
55%
21.09
mon
Day
84°F
E 7 mph
Precip.
6%
Night
81°F
N 10 mph
Precip.
52%
22.09
tue
Day
84°F
NW 7 mph
Precip.
7%
Night
82°F
N 6 mph
Precip.
38%
23.09
wed
Day
82°F
SE 7 mph
Precip.
14%
Night
82°F
NE 3 mph
Precip.
18%
24.09
thu
Day
82°F
S 6 mph
Precip.
14%
Night
79°F
NE 10 mph
Precip.
38%
25.09
fri
Day
82°F
SW 7 mph
Precip.
56%
Night
79°F
W 4 mph
Precip.
19%
26.09
sat
Day
79°F
N 2 mph
Precip.
19%
Night
82°F
SW 7 mph
Precip.
19%
27.09
sun
Day
81°F
SW 4 mph
Precip.
60%
Night
81°F
SW 10 mph
Precip.
8%

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 5 days
Windiest months:
March 14.7 mph
November 14.2 mph
December 14.0 mph

Cayo Guillermo on a weather map

Current weather
07:27
Cayo Guillermo
+84°F
W 11 mph
Feels like: +91°F
Precip.: 17%
Places in Cuba:
Name
°F
Varadero
+75°F
Havana
+86°F
Cayo Santa Maria
+84°F
Cayo Guillermo
+84°F
Cayo Coco
+75°F
Cayo Largo
+75°F
Matanzas
+75°F
Holguin
+77°F
Pinar del Rio
+73°F
Playa Esmeralda
+79°F
Playa Blanca
+79°F
Playa Santa Lucia
+79°F
Santa Maria
+84°F
Santiago de Cuba
+72°F
Cienfuegos
+73°F
all places
24 Hours Forecast
Cayo Guillermo
Local time: 07:27
September 14, monday
0900
84°F
W
11 mph
1200
84°F
W
12 mph
1500
86°F
SW
13 mph
1800
86°F
W
14 mph
2100
84°F
W
16 mph
September 15, tuesday
0000
84°F
W
16 mph
0300
84°F
W
16 mph
0600
84°F
W
14 mph
Units of measurement: °C / °F