Cayo Guillermo weather live forecast

Today's maximum temperature in Cayo Guillermo is expected to be 82°F. Select a day from the live weather forecast for Cayo Guillermo, Cuba for more weather parameters.

Tuesday
12th May
82

81

8

10
Wednesday
13th May
82

81

8

10
Thursday
14th May
82

81

9

10
Friday
15th May
82

79

7

9
Saturday
16th May
82

81

8

11

5-day weather forecast updated at 04:01 on Tuesday 12th 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 12th May 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 82°F, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 60% chance of some rain and a moderate breeze of 12 mph from the south-east.

82
°F maximum temperature
81
°F minimum temperature
isolated thunderstorms
8
hours of sunshine
10
UV index (Very High)
60
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
12
mph wind from SE

Cayo Guillermo weather for Wednesday 13th May 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 10-20 mm of rainfall expected with 69% chance of some rain and a gentle breeze of 8 mph from the south-west.

82
°F maximum temperature
81
°F minimum temperature
isolated thunderstorms
8
hours of sunshine
10
UV index (Very High)
69
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
8
mph wind from SW

Cayo Guillermo weather for Thursday 14th May 2026

Expect isolated thunderstorms 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 10-20 mm of rainfall expected with 88% chance of some rain and a gentle breeze of 9 mph from the south-west.

82
°F maximum temperature
81
°F minimum temperature
isolated thunderstorms
9
hours of sunshine
10
UV index (Very High)
88
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
9
mph wind from SW

Cayo Guillermo weather for Friday 15th May 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 82°F, low 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 55% chance of some rain and a light breeze of 7 mph from the north-east.

82
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
7
hours of sunshine
9
UV index (Very High)
55
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
7
mph wind from NE

Cayo Guillermo weather for Saturday 16th May 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 11 (Extreme) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 50% chance of some rain and a moderate breeze of 12 mph from the east.