May weather forecast
San Juan y Martínez, Cuba

The last month of the spring, May, is another tropical month in San Juan y Martínez, Cuba, with an average temperature ranging between max 30.7°C (87.3°F) and min 22.9°C (73.2°F).

Temperature

San Juan y Martínez records an average high-temperature of a still hot 30.7°C (87.3°F) in May, maintaining a close correlation with April's 30.3°C (86.5°F). San Juan y Martínez registers a consistent average low-temperature of 22.9°C (73.2°F) during May.

Heat index

May's heat index is estimated at a torrid 38°C (100.4°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In May, the average relative humidity in San Juan y Martínez is 75%.

Rainfall

In San Juan y Martínez, Cuba, during May, the rain falls for 21.1 days and regularly aggregates up to 90mm (3.54") of precipitation. In San Juan y Martínez, during the entire year, the rain falls for 211.9 days and collects up to 823mm (32.4") of precipitation.

Daylight

The average length of the day in May in San Juan y Martínez is 13h and 13min.
On the first day of the month, sunrise is at 07:02 and sunset at 20:02. On the last day of May, sunrise is at 06:50 and sunset at 20:15 CDT.

Sunshine

The months with the most sunshine are May and June, with an average of 10.4h of sunshine.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 in May interprets into the following advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.