May weather forecast
Sancti Spiritus, Cuba

The imminent summer warmth starts to be felt in Sancti Spiritus during May. The weather becomes warmer, with less windy conditions and a remarkable increase in rainfall, reaching up to 145mm (5.71"). With the summer season setting in, the environment remains relatively humid coupled with longer sunshine hours, which is a typical characteristic of Sancti Spiritus weather. The pressure starts to slightly drop, indicative of the transitioning weather patterns. Moving on to June, expect the highest rainfall and an augmentation in humidity levels.

Temperature

Sancti Spiritus's average high-temperature in May is a still hot 30.5°C (86.9°F), marking an insignificant difference from the 30.7°C (87.3°F) of April. May nights are marked by an average temperature drop to an agreeable 21.8°C (71.2°F).

Heat index

For most parts of May, the heat index is evaluated at a very hot 39°C (102.2°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in May is 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 22 days and typically aggregates up to 145mm (5.71") of precipitation.

Daylight

In May, the average length of the day is 13h and 12min.
On the first day of the month, sunrise is at 06:45 and sunset at 19:44. On the last day of May, in Sancti Spiritus, sunrise is at 06:34 and sunset at 19:57 CDT.

Sunshine

The average sunshine in May in Sancti Spiritus is 9.7h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 7 in May converts into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. 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. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.