January weather forecast
Cayo Guillermo, Cuba

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. Precipitation levels remain moderate, only marking the start of rainier periods ahead. As this period precedes February, locals and visitors can expect a gradual increase in certain weather parameters, including temperature and daylight hours.

Temperature

In Cayo Guillermo, the month of January registers the lowest temperatures, averaging 27°C (80.6°F) at the peak and 17°C (62.6°F) at the lowest.

Rainfall

In January, the rain falls for 7 days. Throughout January, 43mm (1.69") of precipitation is accumulated. In Cayo Guillermo, 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 surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

The average length of the day in January is 10h and 56min.
On the first day of January in Cayo Guillermo, sunrise is at 06:54 and sunset at 17:41. On the last day of the month, sunrise is at 06:54 and sunset at 18:02 CST.

Sunshine

January, February, June, September through December, with an average of 7h of sunshine, are months with the least sunshine.

UV index

The average daily maximum UV index in January is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 7 in January translates into this advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. 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. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.