Cayo Guillermo weather live forecast

Today's maximum temperature in Cayo Guillermo is expected to be 29°C. Select a day from the live weather forecast for Cayo Guillermo, Cuba for more weather parameters.

Sunday
20th Sep
29

28

3

9
Monday
21st Sep
29

28

4

5
Tuesday
22nd Sep
29

28

0

7
Wednesday
23rd Sep
29

28

2

8
Thursday
24th Sep
29

28

5

7

5-day weather forecast updated at 04:02 on Sunday 20th 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 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 9 (Very High) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 69% chance of some rain and a light breeze of 12 kph from the south-west.

29
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
9
UV index (Very High)
69
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from SW

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 5 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 87% chance of some rain and a gentle breeze of 17 kph from the south.

29
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
5
UV index (Moderate)
87
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
17
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 no hours of bright sunshine. There are 10-20 mm of rainfall expected with 93% chance of some rain and a gentle breeze of 18 kph from the south-east.

29
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
7
UV index (High)
93
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from SE

Cayo Guillermo weather for Wednesday 23rd 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 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 85% chance of some rain and a gentle breeze of 18 kph from the south-east.

29
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
8
UV index (Very High)
85
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from SE

Cayo Guillermo weather for Thursday 24th 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 83% chance of some rain and a gentle breeze of 17 kph from the east.