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Cayo Guillermo in July 2027: weather, temperatures and activities

Do you want to visit Cayo Guillermo in July 2027? Discover the usual weather at this time of year, average temperatures, the risk of rain, possible activities, and our opinion on whether July is a good month to travel to Cayo Guillermo, Cuba.

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Is it worth visiting Cayo Guillermo in July?

Check your ideal travel criteria and see if the month of July suits your plans to go to Cayo Guillermo.
What matters most?
Cayo Guillermo in July 2027: weather, temperatures and activities

Page summary

Cayo Guillermo in July in summary
Fair weather
Min 28°C Max 29°C 157 mm 10 day(s) 79% 35% 30°C UV 6 12.9 h/day
Possible activities in July
Beach and swimmingAnimal observationDiving and snorkelingWatersportsNature and landscapesWell-beingBoat trip and cruise
Practical guidelines
Moderate crowds 05:39 19:02
Hourly weather

Average weather in Cayo Guillermo in July 2027

Fair weather

The weather in Cayo Guillermo in July 2027 is based on statistical data from previous years in July. This allows you to forecast the weather in July 2027. Check the hourly statistics (6:00, 9:00, 12:00, 15:00, 18:00, 21:00, 0:00 and 3:00), with the associated average temperature, for the whole month, and also, by navigating the tabs, for the beginning, middle and end of the month.

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Climate

Climate of Cayo Guillermo in July

Temperatures, precipitation and monthly trends help to better understand the climate in Cayo Guillermo in July.

Temperatures and rain in Cayo Guillermo in July

Average daily weather

Temperatures and rain day by day in July.
Minimal Average Maximums Average rainfall

Monthly temperatures

The month of July is highlighted to compare it quickly with the rest of the year.
Minimal Average Maximums

Monthly precipitation

The bar for the month under study is highlighted.
Average rainfall

About the climate in Cayo Guillermo in July

Seasonal normals

Seasonal normals of Cayo Guillermo in July

Check the seasonal normals in Cayo Guillermo in July and compare the weather with the previous month and the following month (or the months of your choice by selecting months in the form below): temperatures, wind, rain, humidity, climate rating...

Last updated: 12/01/2026
Reference period for normals: January 2009 - December 2025
Month analyzed
July
Weather data June July August
Outside temperature
Average temperature 28.1°C 28.6°C 28.9°C
Maximum temperature 28.7°C 29.3°C 29.5°C
Minimum temperature 27.5°C 28.0°C 28.3°C
Record maximum temperature 31.0°C
(2009)
31.0°C
(2009)
31.0°C
(2010)
Record low temperature 21.0°C
(2021)
22.0°C
(2020)
22.0°C
(2021)
Number of days at +30° 4 day(s)
(13%)
10 day(s)
(32%)
15 day(s)
(48%)
Number of days at +18° 30 day(s)
(100%)
31 day(s)
(100%)
31 day(s)
(100%)
Number of days below 0° 0 day(s)
(0%)
0 day(s)
(0%)
0 day(s)
(0%)
Sea temperature
Sea temperature (average) 28.3°C 29.3°C 30.0°C
Sea temperature (minimum) 27.3°C 28.5°C 29.1°C
Sea temperature (maximum) 29.5°C 30.3°C 30.9°C
Wind
Wind speed 23 km/h 25 km/h 24 km/h
Wind temperature 27.6°C 28.2°C 28.4°C
Precipitation (rain)
Precipitation 181.5 mm 157.4 mm 230.1 mm
Number of days with precipitation 22 day(s)
(73%)
24 day(s)
(77%)
27 day(s)
(87%)
Number of days with significant precipitation (greater than 5 mm) 11 day(s)
(38%)
10 day(s)
(33%)
13 day(s)
(43%)
Record precipitation in one day 70.1 mm
(2015)
50.2 mm
(2013)
124.9 mm
(2012)
Other weather data
Humidity 80% 79% 79%
Visibility 9.5 km 9.6 km 9.4 km
Cloud cover 35% 35% 34%
UV index 6 6 6
Daily sunshine 13h 13h 12h
Sunrise and sunset
Sunrise time 05h30 05h39 05h52
Sunset time 19h01 19h02 18h46
Day length 13h31 13h23 12h54
Our opinion on the climate in July
The review of Where And When fair weather fair weather fair weather
Activities and events

What to do in Cayo Guillermo in July?

Possible activities in July
Beach and swimmingAnimal observationDiving and snorkelingWatersportsNature and landscapesWell-beingBoat trip and cruise
Observed weather

What was the weather like in Cayo Guillermo in July last?

Find the observed weather calendar in Cayo Guillermo in July 2025, with each day’s weather, temperatures and precipitation.

Mon. Tue. Wed. Thu. Fri. Sat. Sun.
1
Partly Cloudy
26°C35°C0.0 mm
2
Partly Cloudy
27°C33°C0.0 mm
3
Partly Cloudy
27°C35°C0.9 mm
4
Thundery outbreaks in nearby
26°C32°C6.4 mm
5
Thundery outbreaks in nearby
26°C35°C0.0 mm
6
Partly Cloudy
24°C36°C0.0 mm
7
Overcast
25°C34°C0.6 mm
8
Partly Cloudy
26°C33°C0.0 mm
9
Thundery outbreaks in nearby
27°C33°C26.7 mm
10
Clear/Sunny
24°C36°C2.8 mm
11
Patchy light rain in area with thunder
27°C34°C7.4 mm
12
Clear/Sunny
26°C35°C1.5 mm
13
Partly Cloudy
27°C33°C0.0 mm
14
Overcast
26°C33°C0.0 mm
15
Cloudy
25°C35°C0.0 mm
16
Overcast
26°C33°C6.4 mm
17
Thundery outbreaks in nearby
27°C37°C0.0 mm
18
Cloudy
27°C34°C2.0 mm
19
Clear/Sunny
28°C35°C0.0 mm
20
Cloudy
27°C34°C0.0 mm
21
Partly Cloudy
27°C34°C0.0 mm
22
Cloudy
25°C33°C0.0 mm
23
Thundery outbreaks in nearby
27°C34°C15.3 mm
24
Cloudy
27°C32°C0.0 mm
25
Overcast
27°C32°C0.0 mm
26
Partly Cloudy
26°C34°C0.0 mm
27
Heavy rain at times
26°C30°C1.9 mm
28
Clear/Sunny
24°C36°C0.0 mm
29
Partly Cloudy
26°C34°C0.0 mm
30
Partly Cloudy
27°C35°C0.0 mm
31
Cloudy
26°C34°C0.0 mm
Nearby

Where to go near Cayo Guillermo in July?

Compare cities and destinations near Cayo Guillermo in July to find another travel stop, a nearby alternative or a logical continuation of your stay in Cayo Guillermo.

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Every month

Best time to visit Cayo Guillermo month by month

Compare the weather in Cayo Guillermo across all months of the year and open each detailed page to find the best time.

Frequently asked questions

Travel to to Cayo Guillermo in July: your frequently asked questions

Short answers to the questions we ask ourselves before booking for this month.

It's an average period, nothing special. Conditions are mediocre in Cayo Guillermo in July, which ranks this month 9th out of 12. The choice of region will make a real difference.

Expect an average of 29°C during the day and 28°C at night, with about 157 mm of precipitation spread over 10 rainy days.

Yes: the sea is 29°C on average in July, a pleasant temperature for swimming.

Expect about 12.9 hours of sunshine per day on average for this month.

No activity stands out as ideal this month, but conditions remain acceptable for Beach and swimming, Animal observation, Diving and snorkeling and Watersports.

No: this month is in Moderate crowds, with a visitor index of 39/100. It is one of the quietest periods of the year.

If your dates are flexible, the most favorable months in Cayo Guillermo are: January, February, March, April, November and December. Compare them before finalizing your departure.
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Temperatures are shown in degrees Celsius and precipitation in millimetres. Based on your country of connection, °F and inches may be more familiar to you.