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In Cayo Largo del Sur, an island located south of the main island of Cuba, and famous for its beaches, the climate is
tropical, with a relatively cool winter from late November to February and a hot, muggy and rainy summer from May to October.
The average
temperature ranges from 24 °C (75 °F) in January to 29.5 °C (85 °F) in July and August.
Here are the average temperatures.
Cayo Largo - Average temperatures (1991-2020) | Month | Min (°C) | Max (°C) | Mean (°C) | Min (°F) | Max (°F) | Mean (°F) |
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| January | 22 | 26 | 24.1 | 72 | 79 | 75.4 |
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| February | 22 | 27 | 24.5 | 72 | 80 | 76.1 |
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| March | 23 | 28 | 25.3 | 74 | 82 | 77.6 |
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| April | 24 | 29 | 26.5 | 76 | 84 | 79.8 |
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| May | 26 | 30 | 27.6 | 78 | 85 | 81.7 |
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| June | 27 | 31 | 28.7 | 80 | 87 | 83.6 |
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| July | 27 | 31 | 29.3 | 81 | 89 | 84.7 |
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| August | 27 | 32 | 29.4 | 81 | 89 | 84.9 |
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| September | 27 | 31 | 29 | 80 | 88 | 84.2 |
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| October | 26 | 30 | 27.9 | 79 | 86 | 82.3 |
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| November | 24 | 28 | 26.1 | 76 | 82 | 79 |
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| December | 23 | 27 | 25 | 74 | 81 | 77.1 |
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| Year | 24.9 | 29 | 26.9 | 76.8 | 84.3 | 80.5 |
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amounts to about 1,200 millimeters (47 inches) per year. During the rainy season, from May to October, there is a relative decrease in rainfall in July. The rainiest months are June and September. The summer rains occur in the form of downpours or thunderstorms, which do not decrease the sunshine duration by much. Here is the average precipitation.
Cayo Largo - Average precipitation| Month | Millimeters | Inches | Days |
|---|
| January | 35 | 1.4 | 6 |
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| February | 40 | 1.6 | 6 |
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| March | 40 | 1.6 | 5 |
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| April | 45 | 1.8 | 5 |
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| May | 145 | 5.7 | 10 |
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| June | 195 | 7.7 | 14 |
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| July | 125 | 4.9 | 11 |
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| August | 165 | 6.5 | 13 |
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| September | 200 | 7.9 | 14 |
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| October | 125 | 4.9 | 14 |
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| November | 55 | 2.2 | 9 |
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| December | 20 | 0.8 | 7 |
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| Year | 1190 | 46.9 | 114 |
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During the dry season, from November to April, precipitation is not abundant, although some rainfall may occur, caused by
cold fronts coming from the United States. These cold fronts can lower the temperature by a few degrees, but not at the level of the north side of Cuba. However, from December to mid-March, some days can be a bit cool, with highs around 20/22 °C (68/72 °F) and lows around 15 °C (59 °F).
On the contrary, from May to October, it's hot and humid, though fortunately, sea breezes blow.
In the period from June to November, Cayo Largo, like the rest of the Caribbean, can be affected by tropical storms and
hurricanes, which, however, are more likely between August and October.
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The amount of
sunshine in Cayo Largo is good all year round, however, it's slightly lower from November to February because of the aforementioned northern disturbances. Here are the average sunshine hours per day.
Cayo Largo - Sunshine hours| Month | Average | Total |
|---|
January | 7.5 | 235 | February | 8 | 225 | March | 8.5 | 270 | April | 9.5 | 280 | May | 8.5 | 265 | June | 7.5 | 230 | July | 8.5 | 255 | August | 8 | 255 | September | 8 | 245 | October | 8 | 255 | November | 7.5 | 225 | December | 7.5 | 230 | Year | 8.1 | 2975 |
The sea in Cayo Largo is warm enough to swim in all year round, as you can see in the following table.
Cayo Largo - Sea temperature| Month | Celsius (°C) | Fahrenheit (°F) |
|---|
January | 26.5 | 80 | February | 26 | 79 | March | 26.5 | 79 | April | 27 | 81 | May | 28 | 83 | June | 29 | 84 | July | 29.5 | 85 | August | 30 | 86 | September | 30 | 86 | October | 29 | 84 | November | 28 | 82 | December | 27 | 81 | Year | 28.1 | 82.5 |
Best Time
The
best time to go to Cayo Largo for a beach holiday runs from December to April. In May, you can still go, since the hurricane season has not started yet, although the heat begins to be felt, and thunderstorms begin to be quite frequent. From December to mid-March, it may be useful to bring a sweatshirt for cool evenings. All in all, the best time is from mid-March to late April.