March weather forecast
Cayo Guillermo, Cuba

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. The transition into spring further prompts a rise in the UV index, soaring to a summer-like 10 - an important consideration for those looking to soak up the Caribbean sun. Temperatures rise too, foreshadowing the upcoming warm season. This unique blend of weather conditions makes March a distinct month, paving the way for April's increased warmth and rainfall.

Temperature

The arrival of March marks a slight shift to an average high-temperature of a still warm 29°C (84.2°F) from February's 28°C (82.4°F). Throughout March, the average low-temperature in Cayo Guillermo dips to a refreshing 18°C (64.4°F).

Rainfall

In Cayo Guillermo, in March, it is raining for 6 days, with typically 52mm (2.05") of accumulated precipitation. In Cayo Guillermo, Cuba, during the entire year, the rain falls for 125 days and collects up to 1200mm (47.24") of precipitation.

Sea temperature

The months with the coldest seawater in Cayo Guillermo are January through March, with an average sea temperature of 25°C (77°F).
Note: Water temperatures ranging between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, making swimming, diving, and similar water activities pleasurable for extended periods.

Daylight

The average length of the day in March in Cayo Guillermo is 12h and 2min.
On the first day of March, sunrise is at 06:35 and sunset at 18:18 CST. On the last day of the month, sunrise is at 07:07 and sunset at 19:29 CDT.
Note: On Sunday, 10. March 2024, at 00:00, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, 03. November 2024, at 01:00; consequently, the time zone reverts from CDT to CST.

Sunshine

In Cayo Guillermo, Cuba, the average sunshine in March is 8h.

UV index

In March, the average daily maximum UV index is 10. A UV Index reading of 8 to 10 represents a very high health risk from unsafe exposure to UV radiation for average individuals.
Note: In March, a daily UV index of 10 turns into the following recommendations:
Take special precautions, as unprotected skin can be damaged and can burn quickly. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Boost your sun resistance with garments that are densely woven yet spacious. After a swim or an outdoor workout, generously apply and reapply a broad-spectrum SPF 30+ sunscreen. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.