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Cayo Guillermo weather in August 2025
Expect 33°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Cayo Guillermo in August. Check more long-term weather averages for Cayo Guillermo in August before you book your next holiday to Cuba in 2025/2026.
- 33°C max day temperature
33 - 8 hours of sunshine per day
- 15 days with some rainfall
15 - 23°C min night temperature
23 - 13 hours of daylight per day
13 - Very High heat & humidity
VH - 117 mm of monthly rainfall
117 - 11+ (Extreme) UV index
11 - 29°C sea temperature
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The August weather guide for Cuba (Cayo Guillermo) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about Cuba
How hot is it in Cayo Guillermo in August?
Daytime temperatures usually reach 33°C in Cayo Guillermo in August with very high heat and humidity, falling to 23°C at night.
How sunny is it in Cayo Guillermo in August?
There are normally 8 hours of bright sunshine each day in Cayo Guillermo in August - that's 61% of daylight hours.
How warm is the sea around Cayo Guillermo in August?
The average sea temperature around Cayo Guillermo in August is 29°C.
Does it rain in Cayo Guillermo in August?
There are usually 15 days with some rain in Cayo Guillermo in August and the average monthly rainfall is 117mm.
What is the chance of a hurricane in Cayo Guillermo in August?
On average less than 1 day in August in Cayo Guillermo is likely to be affected by the passage of one or more tropical storms.
Cayo Guillermo August sunrise & sunset times
Browse the sunrise and sunset times for Cayo Guillermo in August 2025. Select a month to view Cayo Guillermo sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 05:46 | 18:55 |
| Saturday, 16th August 2025 | 05:52 | 18:45 |
| Sunday, 31st August 2025 | 05:57 | 18:32 |
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