15.05
fri
fri
Day
82°F
SE 5 mph
Precip.
0%
0%
Night
81°F
SW 4 mph
Precip.
0%
0%
16.05
sat
sat
Day
82°F
W 12 mph
Precip.
0%
0%
Night
82°F
W 18 mph
Precip.
0%
0%
17.05
sun
sun
Day
82°F
W 17 mph
Precip.
65%
65%
Night
81°F
W 20 mph
Precip.
100%
100%
18.05
mon
mon
Day
82°F
W 17 mph
Precip.
100%
100%
Night
81°F
W 18 mph
Precip.
0%
0%
19.05
tue
tue
Day
82°F
W 15 mph
Precip.
100%
100%
Night
81°F
W 19 mph
Precip.
79%
79%
20.05
wed
wed
Day
82°F
W 15 mph
Precip.
100%
100%
Night
81°F
W 17 mph
Precip.
100%
100%
21.05
thu
thu
Day
81°F
W 11 mph
Precip.
51%
51%
Night
81°F
W 16 mph
Precip.
100%
100%
sea water
temperature
temperature
| Cayo Guillermo |
monthly
weather
weather
| Cayo Guillermo |
current
weather
weather
| Cayo Guillermo |
14 days
forecast
forecast
| Cayo Guillermo |
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
Cayo Guillermo on a weather map
Places in Cuba:
Name
°F
24 Hours Forecast
Cayo Guillermo
Local time: 18:19
May 15, friday
2100
81°F
W
6 mph
6 mph
May 16, saturday
0000
81°F
SW
4 mph
4 mph
0300
79°F
NW
9 mph
9 mph
0600
81°F
NW
8 mph
8 mph
0900
82°F
W
10 mph
10 mph
1200
82°F
W
12 mph
12 mph
1500
82°F
W
14 mph
14 mph
1800
82°F
W
16 mph
16 mph
