Cayo Guillermo weather live forecast

Today's maximum temperature in Cayo Guillermo is expected to be 26°C. Select a day from the live weather forecast for Cayo Guillermo, Cuba for more weather parameters.

Saturday
17th Jan
26

23

5

3
Sunday
18th Jan
26

24

1

5
Monday
19th Jan
25

23

3

6
Tuesday
20th Jan
24

23

2

5
Wednesday
21st Jan
25

23

1

6

5-day weather forecast updated at 04:03 on Saturday 17th January 2026 GMT

More about Cayo Guillermo

Cayo Guillermo by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Cuba

Marella Cruises: up to £300 off 2026/2027 sailings

Discount Code

Save up to £300 on sailings (1 Apr 2026-30 Apr 2027)
Book online in Marella Cruises sale with myTUI account
Discount varies on destination. Min 7 nights duration

Show discount code

******WAY

Redeem Marella Cruises discount code >>

Expires at 23:59 on Saturday 31st Jan 2026 · View all Marella Cruises offers

Cruise deal finder

Destination

The 5-day weather forecast for Cuba (Cayo Guillermo) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Cayo Guillermo weather forecast by day

Below are the detailed weather forecasts for Cayo Guillermo for the next 5 days.

Cayo Guillermo weather for Saturday 17th January 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 75% chance of some rain and a moderate breeze of 22 kph from the east.

26
°C maximum temperature
23
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
3
UV index (Moderate)
75
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
22
kph wind from E

Cayo Guillermo weather for Sunday 18th January 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 80% chance of some rain and a gentle breeze of 18 kph from the east.

26
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
5
UV index (Moderate)
80
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
18
kph wind from E

Cayo Guillermo weather for Monday 19th January 2026

Expect broken clouds in Cayo Guillermo, Cuba with a maximum temperature of 25°C, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the north-east.

25
°C maximum temperature
23
°C minimum temperature
broken clouds
3
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
25
°C wind chill
28
kph wind from NE

Cayo Guillermo weather for Tuesday 20th January 2026

Expect broken clouds in Cayo Guillermo, Cuba with a maximum temperature of 24°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 37 kph from the north-east.

24
°C maximum temperature
23
°C minimum temperature
broken clouds
2
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
37
kph wind from NE

Cayo Guillermo weather for Wednesday 21st January 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 25°C, maximum UV of 6 (High) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 75% chance of some rain and a fresh breeze of 37 kph from the north-east.