Cayo Guillermo

Current Weather

25°77°

Mostly Clear

Feels Like: 25°77°

Min: 25°77°

Max: 25°78°

The next few hours will be partly cloudy, with today reaching 25°C and dropping to 25°C. The coming days will be drizzle

Hourly Forecast
25°77°25°77°25°77°25°77°25°77°25°77°25°77°25°77°25°77°25°77°25°77°25°77°25°77°25°77°25°77°25°78°25°78°25°77°25°77°25°77°25°77°25°77°25°77°25°77°
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
Today
Tomorrow

Want a closer look at the weather?

Premium adds minute-by-minute rain timing, yesterday comparisons, and more detail across Airpult.

Get Premium
Air Quality
15
Good

Air quality is satisfactory, and air pollution poses little or no risk.

GoodHazardous
Daylight Hours

07:14

Sunrise

18:47

Sunset

11 hours 32 minutes of sunlight today
Moon

07:58

Moonrise

19:23

Moonset

Daily Forecast

Today

25°77°
25°78°

Monday

25°76°
25°77°

Tuesday

24°76°
25°77°

Wednesday

24°76°
25°77°

Thursday

24°75°
24°76°

Friday

24°76°
25°77°

Saturday

24°76°
25°77°

Sunday

25°76°
27°81°

Monday

27°80°
29°84°

Tuesday

27°80°
29°84°
UV Index
No protection needed
0Low
LowExtreme
Humidity
86%Humid
LowHigh
Looking at the night sky?

See moon phases, eclipses, and seasons for this year.

View astronomy
Current stargazing conditions?

See sky darkness, moon phase, and the best viewing window for Cayo Guillermo.

View stargazing score

Weather in Cayo Guillermo today, October 11, 2026

Cayo Guillermo starts October 11, 2026 under largely sunny skies, with bright spells setting the tone from the outset. Outdoor plans should enjoy long stretches of open sky as the day unfolds. The opening hours look fair, as cloud stays near 46% around 06:00. Morning errands should face fewer weather interruptions.Cayo Guillermo starts October 11, 2026 under largely sunny skies, with bright spells setting the tone from the outset. Outdoor plans should enjoy long stretches of open sky as the day unfolds. The opening hours look fair, as cloud stays near 46% around 06:00. Morning errands should face fewer weather interruptions.

The day peaks near 25°C and cools toward 25°C. The air stays humid, with relative humidity between 82% and 87% and the peak around 03:00. A lighter breeze peaks around 03:00 near 19 km/h.The day peaks near 78°F and cools toward 77°F. The air stays humid, with relative humidity between 82% and 87% and the peak around 03:00. A lighter breeze peaks around 03:00 near 12 mph.

Afternoon conditions open up, holding cloud close to 38% near 23:00. The day finishes on a milder, brighter note. Horizontal visibility holds close to 16.1 km. The sun rises at 07:14 and sets at 18:47, for a total of 11 hours 32 minutes of sunlight today.Afternoon conditions open up, holding cloud close to 38% near 23:00. The day finishes on a milder, brighter note. Horizontal visibility holds close to 10 mi. The sun rises at 07:14 and sets at 18:47, for a total of 11 hours 32 minutes of sunlight today.

Taken together, settled sunshine in Cayo Guillermo on October 11, 2026 makes outdoor timing easier, with highs near 25°C.Taken together, settled sunshine in Cayo Guillermo on October 11, 2026 makes outdoor timing easier, with highs near 78°F.

Frequently asked questions about weather in Cayo Guillermo

How warm does it get in Cayo Guillermo?

The warmest month in Cayo Guillermo is August, with average high temperatures of 30°C. The average temperature during this period is around 28°C.The warmest month in Cayo Guillermo is August, with average high temperatures of 86°F. The average temperature during this period is around 83°F.

How cold does it get in Cayo Guillermo?

The coldest month in Cayo Guillermo is January, with average low temperatures of 22°C. The average temperature during this period is around 24°C.The coldest month in Cayo Guillermo is January, with average low temperatures of 72°F. The average temperature during this period is around 74°F.

What is the wettest time of year in Cayo Guillermo?

The wettest month in Cayo Guillermo is September, with an average of 154 mm of precipitation.The wettest month in Cayo Guillermo is September, with an average of 6.1 in of precipitation.

What is the driest time of year in Cayo Guillermo?

The driest month in Cayo Guillermo is February, with an average of 26 mm of precipitation.The driest month in Cayo Guillermo is February, with an average of 1 in of precipitation.

View full climate insights for Cayo Guillermo →