Cayo Guillermo weather live forecast

Today's maximum temperature in Cayo Guillermo is expected to be 28°C. Select a day from the live weather forecast for Cayo Guillermo, Cuba for more weather parameters.

Wednesday
20th May
28

26

8

UV10
Thursday
21st May
28

26

8

UV10
Friday
22nd May
28

27

9

UV10
Saturday
23rd May
28

27

7

UV11
Sunday
24th May
28

27

7

UV11

5-day weather forecast updated at 04:01 on Wednesday 20th May 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 Wednesday 20th May 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 36% chance of some rain and a moderate breeze of 25 kph from the east.

28
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
UV10
UV index (Very High)
36
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
25
kph wind from E

Cayo Guillermo weather for Thursday 21st May 2026

Expect scattered clouds in Cayo Guillermo, Cuba with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the east.

28
°C maximum temperature
26
°C minimum temperature
scattered clouds
8
hours of sunshine
UV10
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
22
kph wind from E

Cayo Guillermo weather for Friday 22nd May 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 10 (Very High) and 9 hours of bright sunshine. There are 2-5 mm of rainfall expected with 65% chance of some rain and a moderate breeze of 22 kph from the east.

28
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
9
hours of sunshine
UV10
UV index (Very High)
65
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
22
kph wind from E

Cayo Guillermo weather for Saturday 23rd May 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 7 hours of bright sunshine. There are 5-10 mm of rainfall expected with 51% chance of some rain and a moderate breeze of 28 kph from the east.

28
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
UV11
UV index (Extreme)
51
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
28
kph wind from E

Cayo Guillermo weather for Sunday 24th May 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a fresh breeze of 34 kph from the east.