Cayo Guillermo weather live forecast

Today's maximum temperature in Cayo Guillermo is expected to be 79°F. Select a day from the live weather forecast for Cayo Guillermo, Cuba for more weather parameters.

Tuesday
17th Mar
79

75

6

6
Wednesday
18th Mar
77

73

3

6
Thursday
19th Mar
75

73

4

7
Friday
20th Mar
75

72

7

8
Saturday
21st Mar
75

73

6

10

5-day weather forecast updated at 04:02 on Tuesday 17th March 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 17th March 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 79°F, low levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 89% chance of some rain and a light breeze of 6 mph from the north-east.

79
°F maximum temperature
75
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
89
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
6
mph wind from NE

Cayo Guillermo weather for Wednesday 18th March 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 77°F, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 20-30 mm of rainfall expected with 90% chance of some rain and a light breeze of 7 mph from the north-east.

77
°F maximum temperature
73
°F minimum temperature
isolated thunderstorms
3
hours of sunshine
6
UV index (High)
90
% chance of some rain
<30
mm of rainfall expected
77
°F wind chill
7
mph wind from NE

Cayo Guillermo weather for Thursday 19th March 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 75°F, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 100% chance of some rain and a moderate breeze of 14 mph from the north-east.

75
°F maximum temperature
73
°F minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
100
% chance of some rain
<20
mm of rainfall expected
75
°F wind chill
14
mph wind from NE

Cayo Guillermo weather for Friday 20th March 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 75°F, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 5-10 mm of rainfall expected with 64% chance of some rain and a moderate breeze of 16 mph from the north.

75
°F maximum temperature
72
°F minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
64
% chance of some rain
<10
mm of rainfall expected
75
°F wind chill
16
mph wind from N

Cayo Guillermo weather for Saturday 21st March 2026

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 75°F, maximum UV of 10 (Very High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 23% chance of some rain and a moderate breeze of 15 mph from the north-east.