Cayo Guillermo weather live forecast

Today's maximum temperature in Cayo Guillermo is expected to be 81°F. Select a day from the live weather forecast for Cayo Guillermo, Cuba for more weather parameters.

Tuesday
5th May
81

79

8

9
Wednesday
6th May
82

79

8

8
Thursday
7th May
82

79

9

10
Friday
8th May
82

81

10

10
Saturday
9th May
82

81

8

11

5-day weather forecast updated at 04:02 on Tuesday 5th 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 Tuesday 5th May 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 9 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 40% chance of some rain and a light breeze of 7 mph from the south-west.

81
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
8
hours of sunshine
9
UV index (Very High)
40
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
7
mph wind from SW

Cayo Guillermo weather for Wednesday 6th May 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 21% chance of some rain and a gentle breeze of 11 mph from the north-east.

82
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
8
hours of sunshine
8
UV index (Very High)
21
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
11
mph wind from NE

Cayo Guillermo weather for Thursday 7th May 2026

Expect scattered clouds in Cayo Guillermo, Cuba with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 10 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 12 mph from the east.

82
°F maximum temperature
79
°F minimum temperature
scattered clouds
9
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
12
mph wind from E

Cayo Guillermo weather for Friday 8th May 2026

Expect scattered clouds in Cayo Guillermo, Cuba with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 10 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the east.

82
°F maximum temperature
81
°F minimum temperature
scattered clouds
10
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
11
mph wind from E

Cayo Guillermo weather for Saturday 9th May 2026

Expect broken clouds in Cayo Guillermo, Cuba with a maximum temperature of 82°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 12 mph from the east.