May weather forecast
San Luis, Cuba

May in San Luis brings forth pronounced warmth with daytime temperature peaks soaring to 30°C (86°F). The shift from the predominantly cooler period is well corroborated with this month's 13.1 daylight hours. Simultaneously, rainfall becomes markedly pronounced, peaking at 133mm (5.24") for the year, with wet conditions occurring over 24.9 days. The added moisture in the atmosphere results in high humidity levels, equal to 80%. Coupling the high temperatures and intense rainfall, the verdant landscape of the city starts to flourish.

Temperature

San Luis experiences an average high-temperature of a hot 30°C (86°F) in May, subtly different from April's 29.7°C (85.5°F). San Luis registers a consistent average low-temperature of 21.4°C (70.5°F) during May.

Heat index

In May, the average heat index is evaluated at a sweltering 38°C (100.4°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. 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 an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In May, the average relative humidity in San Luis is 80%.

Rainfall

May is the month with the most rainfall. Rain falls for 24.9 days and accumulates 133mm (5.24") of precipitation.

Daylight

In May, the average length of the day in San Luis is 13h and 6min.
On the first day of May, sunrise is at 06:33 and sunset at 19:27. On the last day of the month, sunrise is at 06:23 and sunset at 19:39 CDT.

Sunshine

In May, the average sunshine in San Luis is 10.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: During May, 7 as the daily maximum UV index converts into the following advice:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.