May weather forecast
Guasimal, Cuba

The last month of the spring, May, is another tropical month in Guasimal, Cuba, with an average temperature fluctuating between 30.5°C (86.9°F) and 21.8°C (71.2°F).

Temperature

Guasimal experiences a transition to a still hot 30.5°C (86.9°F) in average high-temperatures with the arrival of May, not greatly differing from April's 30.7°C (87.3°F). An average low-temperature of 21.8°C (71.2°F) marks the month of May.

Heat index

May's heat index is estimated at a sweltering 39°C (102.2°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In May, the average relative humidity in Guasimal is 78%.

Rainfall

May is the month with the most rainfall in Guasimal, Cuba. Rain falls for 22 days and accumulates 145mm (5.71") of precipitation.

Daylight

In May, the average length of the day is 13h and 11min.
On the first day of the month, sunrise is at 06:45 and sunset at 19:43. On the last day of May, sunrise is at 06:34 and sunset at 19:56 CDT.

Sunshine

In Guasimal, the average sunshine in May is 9.7h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Guasimal. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 7 during May translates into the following guidance:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.