World Resorts Cuba Cayo Guillermo Weather

Cayo Guillermo 14 Days Forecast

15.05
fri
Day
82°F
SE 6 mph
Precip.
0%
Night
81°F
W 7 mph
Precip.
100%
16.05
sat
Day
82°F
W 12 mph
Precip.
0%
Night
82°F
W 17 mph
Precip.
79%
17.05
sun
Day
82°F
W 16 mph
Precip.
100%
Night
81°F
W 21 mph
Precip.
100%
18.05
mon
Day
82°F
W 17 mph
Precip.
100%
Night
82°F
W 21 mph
Precip.
100%
19.05
tue
Day
82°F
W 17 mph
Precip.
100%
Night
81°F
W 21 mph
Precip.
73%
20.05
wed
Day
82°F
W 14 mph
Precip.
45%
Night
81°F
W 18 mph
Precip.
84%
21.05
thu
Day
81°F
W 12 mph
Precip.
58%
Night
81°F
W 16 mph
Precip.
100%
22.05
fri
Day
81°F
W 9 mph
Precip.
43%
Night
82°F
W 18 mph
Precip.
100%
23.05
sat
Day
82°F
W 14 mph
Precip.
100%
Night
82°F
W 20 mph
Precip.
100%
24.05
sun
Day
82°F
W 16 mph
Precip.
100%
Night
81°F
NW 17 mph
Precip.
100%
25.05
mon
Day
81°F
NW 14 mph
Precip.
100%
Night
79°F
NW 12 mph
Precip.
100%
26.05
tue
Day
81°F
W 7 mph
Precip.
100%
Night
79°F
NW 12 mph
Precip.
100%
27.05
wed
Day
81°F
E 7 mph
Precip.
100%
Night
81°F
SE 4 mph
Precip.
100%
28.05
thu
Day
81°F
E 9 mph
Precip.
100%
Night
81°F
E 4 mph
Precip.
100%

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 84.2°F. The highest and lowest sea temperatures during the month were 86.2°F and 82.6°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 11 days
Warmest months:
August 86.9 °F
July 86.5 °F
September 86.0 °F
Warmest sea temp:
September 86.0 °F
August 85.9 °F
July 85.2 °F
Coldest months:
January 76.6 °F
February 77.4 °F
March 78.3 °F
Rainiest months:
May 7 days
October 7 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
17:19
Cayo Guillermo
+82°F
SW 14 mph
Feels like: +88°F
Precip.: 0%
Places in Cuba:
Name
°F
Baracoa
+82°F
Varadero
+81°F
Havana
+81°F
Cayo Santa Maria
+82°F
Cayo Guillermo
+82°F
Cayo Coco
+84°F
Cayo Largo
+86°F
Matanzas
+81°F
Holguin
+84°F
Pinar del Rio
+84°F
Playa Blanca
+82°F
Santa Maria
+82°F
Santiago de Cuba
+84°F
Cienfuegos
+86°F
Trinidad
+82°F
all places
24 Hours Forecast
Cayo Guillermo
Local time: 17:19
May 15, friday
1800
82°F
SW
14 mph
2100
81°F
W
8 mph
May 16, saturday
0000
81°F
W
7 mph
0300
81°F
NW
10 mph
0600
81°F
NW
8 mph
0900
82°F
W
11 mph
1200
82°F
W
12 mph
1500
82°F
W
14 mph
Units of measurement: °C / °F