Cayo Guillermo weather live forecast

Today's maximum temperature in Cayo Guillermo is expected to be 30°C. Select a day from the live weather forecast for Cayo Guillermo, Cuba for more weather parameters.

Friday
18th Sep
30

29

6

9
Saturday
19th Sep
29

28

7

9
Sunday
20th Sep
29

28

3

8
Monday
21st Sep
29

28

7

8
Tuesday
22nd Sep
29

28

5

7

5-day weather forecast updated at 04:01 on Friday 18th September 2026 GMT

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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 Friday 18th September 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 52% chance of some rain and a moderate breeze of 22 kph from the east.

30
°C maximum temperature
29
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
9
UV index (Very High)
52
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from E

Cayo Guillermo weather for Saturday 19th September 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 68% chance of some rain and a gentle breeze of 14 kph from the south.

29
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
9
UV index (Very High)
68
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from S

Cayo Guillermo weather for Sunday 20th September 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 84% chance of some rain and a gentle breeze of 17 kph from the south-east.

29
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
8
UV index (Very High)
84
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
17
kph wind from SE

Cayo Guillermo weather for Monday 21st September 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 5-10 mm of rainfall expected with 80% chance of some rain and a gentle breeze of 19 kph from the south.

29
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
80
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
19
kph wind from S

Cayo Guillermo weather for Tuesday 22nd September 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 90% chance of some rain and a gentle breeze of 18 kph from the south-east.