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Contents
- The climate of Cayo Guillermo
- The best time to visit Cayo Guillermo
- The worst time to visit Cayo Guillermo
- Spring weather in Cayo Guillermo
- Summer weather in Cayo Guillermo
- Autumn weather in Cayo Guillermo
- Winter weather in Cayo Guillermo
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average UV index
Climate and monthly weather forecast
The climate of Cayo Guillermo
As a tropical location nestled in the archipelago off Cuba's north central coast, Cayo Guillermo is classified under the Köppen climate classification as a tropical monsoon climate. This distinct geographical position leads to a climate characterized by warm temperatures, high humidity, and significant rainfall throughout the year.
Upon examining the climatological data for Cayo Guillermo, it is apparent that temperatures remain relatively stable throughout the year, ranging from a low of 17°C (62.6°F) to a high of 33°C (91.4°F). The warmest month of the year typically falls between June and August with temperatures reaching a maximum of 33°C (91.4°F) while the coolest month is February with an average minimum temperature of 17°C (62.6°F).
In terms of rainfall, Cayo Guillermo sees an increase in the amount of precipitation from the start of May, peaking in the month of October with a hefty average of 182mm (7.17"). On the contrary, a drop in precipitation is noticeable from November with the least amount of rainfall recorded in December at 39mm (1.54").
Daylight hours present in a clear crescendo-decrescendo pattern across the year, peaking in June with 13.5 hours of daylight and sinking to its lowest in December with 10.8 hours. Sunshine hours see little variation, hovering around 7-9 hours throughout the year. Peak UV index is a notable characteristic of this climate, with values as high as 12 in the months from May to August.
Upon examining the climatological data for Cayo Guillermo, it is apparent that temperatures remain relatively stable throughout the year, ranging from a low of 17°C (62.6°F) to a high of 33°C (91.4°F). The warmest month of the year typically falls between June and August with temperatures reaching a maximum of 33°C (91.4°F) while the coolest month is February with an average minimum temperature of 17°C (62.6°F).
In terms of rainfall, Cayo Guillermo sees an increase in the amount of precipitation from the start of May, peaking in the month of October with a hefty average of 182mm (7.17"). On the contrary, a drop in precipitation is noticeable from November with the least amount of rainfall recorded in December at 39mm (1.54").
Daylight hours present in a clear crescendo-decrescendo pattern across the year, peaking in June with 13.5 hours of daylight and sinking to its lowest in December with 10.8 hours. Sunshine hours see little variation, hovering around 7-9 hours throughout the year. Peak UV index is a notable characteristic of this climate, with values as high as 12 in the months from May to August.
The best time to visit Cayo Guillermo
Given the preference of most travelers for warm temperatures and dry conditions, the beneficial time to pay a visit to Cayo Guillermo is from November to April. During this period, average temperature ranges from 19°C (66.2°F) to 31°C (87.8°F), and the average amount of rainfall is relatively low, ranging from 39mm (1.54") to 60mm (2.36"), making it ideal for outdoor activities.
The worst time to visit Cayo Guillermo
Contrarily, the months from May to October might prove unfavorable for potential visitors. This time of year sees a dramatic surge in the precipitation levels, with rainfall amount reaching as much as 182mm (7.17") in October. Simultaneously, average temperatures rise, with a maximum of 33°C (91.4°F), which combined with the high humidity can lead to discomfort.
Spring weather in Cayo Guillermo
During the spring season stretching from March to May, the weather in Cayo Guillermo begins to heat up. Average high temperatures escalate from 29°C (84.2°F) in March up to 31°C (87.8°F) by May. This period also marks the start of the rainy season, with rainfall totals increasing dramatically from 52mm (2.05") in March to 168mm (6.61") in May.
Summer weather in Cayo Guillermo
The summer months from June to August are characterized by intense heat and heavy rainfall in Cayo Guillermo. Average high temperatures oscillate around 33°C (91.4°F) while minimums remain steady at 23°C (73.4°F). Rainfall is significant during these months, hitting a peak of 160mm (6.3") in June.
Autumn weather in Cayo Guillermo
Cayo Guillermo experiences a transition in climate in the autumn months of September, October, and November. Despite a slight reduction in temperature, with highs of 31°C (87.8°F) and lows of 22°C (71.6°F), rainfall increases substantially. The peak of the rainy season occurs in October with an average rainfall of 182mm (7.17").
Winter weather in Cayo Guillermo
Winter, spanning December through February, brings relief from the heat for Cayo Guillermo. Lower yet comfortable temperatures ranging from 17°C (62.6°F) to 29°C (84.2°F) can be expected, providing a respite from the grueling summer heat. Correspondingly, rainfall significantly drops off during these months with an average of just 43mm (1.69") in February.
Weather in January
Initiating the year, January in Cayo Guillermo, Cuba, presents relatively moderate weather conditions. Temperatures typically range from a comfortable 17°C (62.6°F) to a warm 27°C (80.6°F). The beginning of the year is characterized by moderate daylight exposure of 10.9 hours, bringing ample opportunities for outdoor recreation in the sun-kissed landscapes of Cuba. Weather in January »
Weather in February
In Cayo Guillermo, the weather in February is quite similar to that of the preceding month. Weather-wise, an increment can be observed in certain elements, including temperature and daylight hours. Interestingly, the UV index elevates from a moderate 7 to a notably higher 8, signifying the need for increased sun protection measures. Weather in February »
Weather in March
By the time March arrives in Cayo Guillermo, the island starts to welcome spring with a variation in weather patterns. A notable increase in rainfall, reaching up to 52mm (2.05") this month, brings forth the onset of a wetter period in this tropical paradise. Weather in March »
Weather in April
Entering April, Cayo Guillermo witnesses further weather changes, characterized by greater rainfall and steadily climbing temperatures. Displaying a noticeable leap from the previous month, rainfall in April average at 60mm (2.36"), marking the commencement of the wet season. Weather in April »
Weather in May
Mingling the last fragments of spring with the onset of summer, May sets a differing tone weather-wise in Cayo Guillermo. Now reaching its peak, rainfall hits 168mm (6.61"), the highest level of precipitation thus far in the year. Prolonged daylight hours and a high UV index continue to define the daytime climate. Weather in May »
Weather in June
As the maiden month of summer, June carries the brunt of the season's heat in Cayo Guillermo. Keeping up with the intensified weather patterns, the UV index reaches a maximum of 12, a feature that highlights June and the following three months. Weather in June »
Weather in July
As one of the peak summer months, July in Cayo Guillermo is characterized by intense humidity and scorching temperatures which reach up to 33°C (91.4°F), the highest of the year. Adding to this, a significant UV index of 12 leaves no room for complacency when it comes to sun protection. Weather in July »
Weather in August
In Cayo Guillermo, August continues the established pattern of scorching hot and wet summer weather. With temperatures mirroring those of July, one can feel the relentless tropical heat of the Cuban shoreline. Rainfall, however, shows a rising trend, peakingto 117mm (4.61"), noteworthy after the little dip in July. Weather in August »
Weather in September
As September dawns on Cayo Guillermo, a marked shift in weather patterns begins to unfold. While the temperatures of 33°C (91.4°F) to 22°C (71.6°F) still represent a warm climate, the rainfall reaches a pinnacle at 160mm (6.3"). Weather in September »
Weather in October
October symbolizes the culmination of the rainy season in Cayo Guillermo, with a high of 182mm (7.17") of downpour. Despite this rainfall, sea temperatures persevere at a warm 29°C (84.2°F), barely scathed by the wet weather. Weather in October »
Weather in November
November strikes a balance between autumnal coolness and fading summer heat in Cayo Guillermo. A statistic that justifies this claim is the drastic drop in rainfall to 86mm (3.39"), indicating the retreat of the wet season. While daylight hours decrease, the duration of sunshine remains constant, portraying the uniqueness of November's weather. Weather in November »
Weather in December
As the curtain closes on the year in Cayo Guillermo comes December, featuring mild weather as winter takes hold. Reigning over weather statistics for this month are lower rainfall levels at 39mm (1.54"), substantiating the arrival of the dry season. Weather in December »
Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Cayo Guillermo?
January is the month when Cayo Guillermo sees the average lowest temperatures, with a high of 27°C (80.6°F) and a low of 17°C (62.6°F).
How much does it rain in Cayo Guillermo?
In Cayo Guillermo, Cuba, during the entire year, the rain falls for 125 days and collects up to 1200mm (47.24") of precipitation.
When is the sea coldest in Cayo Guillermo?
January through March, with an average sea temperature of 25°C (77°F), are months with the coldest seawater in Cayo Guillermo.
What is the month with the least sunshine in Cayo Guillermo?
The months with the least sunshine in Cayo Guillermo, Cuba, are January, February, June, September through December, with an average of 7h of sunshine.
When is Daylight Saving Time (DST) in Cayo Guillermo?
On Sunday, 10. March 2024, at 00:00, Daylight Saving Time starts in Cayo Guillermo, Cuba, and the time zone changes from CST to CDT. Daylight Saving Time ends on Sunday, 03. November 2024, at 01:00, and the time zone reverts from CDT to CST.
What month has the most sunshine in Cayo Guillermo?
The month with the most sunshine in Cayo Guillermo is April, with an average of 9h of sunshine.
What are the months with the highest UV index in Cayo Guillermo?
The months with the highest UV index in Cayo Guillermo, Cuba, are April through August, with an average maximum UV index of 12.
What are the months with the warmest sea water in Cayo Guillermo?
June through October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Cayo Guillermo, Cuba.
When are the longest days in Cayo Guillermo?
The month with the longest days in Cayo Guillermo, Cuba, is June, with an average of 13h and 30min of daylight.
What part of the year is the hottest in Cayo Guillermo?
During July and August, Cayo Guillermo experiences its warmest period, with an average high-temperature of 33°C (91.4°F).
What is the wettest month in Cayo Guillermo?
The month with the most rainfall is October, when the rain falls for 16 days and typically aggregates up to 182mm (7.17") of precipitation.
What is the driest month in Cayo Guillermo?
December is the month with the least rainfall in Cayo Guillermo. Rain falls for 7 days and accumulates 39mm (1.54") of precipitation.
What is the month with the shortest days in Cayo Guillermo?
With an average of 10h and 48min of daylight, December has the shortest days of the year in Cayo Guillermo.
What is the month with the lowest UV index in Cayo Guillermo?
December is the month with the lowest UV index in Cayo Guillermo, with an average maximum UV index of 6.
Average temperature
Cayo Guillermo, Cuba
The warmest months (with the highest average high temperature) are July and August (33°C).
The month with the lowest average high temperature is January (27°C).
The months with the highest average low temperature are June, July and August (23°C).
The coldest months (with the lowest average low temperature) are January and February (17°C).
Average rainfall
Cayo Guillermo, Cuba
- Average rainfall in January:
43mm - Average rainfall in February:
43mm - Average rainfall in March:
52mm - Average rainfall in April:
60mm - Average rainfall in May:
168mm - Average rainfall in June:
160mm
The wettest month (with the highest rainfall) is October (182mm).
The driest month (with the least rainfall) is December (39mm).
Average rainfall days
Cayo Guillermo, Cuba
- Average rainfall days in January:
7 days - Average rainfall days in February:
5 days - Average rainfall days in March:
6 days - Average rainfall days in April:
5 days - Average rainfall days in May:
12 days - Average rainfall days in June:
15 days
- Average rainfall days in July:
13 days - Average rainfall days in August:
15 days - Average rainfall days in September:
15 days - Average rainfall days in October:
16 days - Average rainfall days in November:
9 days - Average rainfall days in December:
7 days
The month with the highest number of rainy days is October (16 days).
The months with the least rainy days are February and April (5 days).
Average sea temperature
Cayo Guillermo, Cuba
The best months for swimming (with the highest average sea temperature) are June, July, August, September and October (29°C).
The coldest months (with the lowest average sea temperature) are January, February and March (25°C).
Average daylight / Average sunshine
Cayo Guillermo, Cuba
- Average daylight in January:
10h and 5min - Average daylight in February:
11h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 4min - Average daylight in May:
13h and 1min - Average daylight in June:
13h and 3min
- Average daylight in July:
13h and 2min - Average daylight in August:
12h and 5min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 4min - Average daylight in November:
11h and 1min - Average daylight in December:
10h and 5min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
The month with the most sunshine is April (Average sunshine: 9h).
The months with the least sunshine are January, February, June, September, October, November and December (Average sunshine: 7h).
Average UV index
Cayo Guillermo, Cuba
The months with the highest UV index are April, May, June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 6).
