May weather forecast
Santiago de Cuba, Cuba

As Santiago de Cuba marches into May, the city embraces the height of the rainy season, characterized by a dramatic increase in the amount of precipitation. Sea temperatures reach a high of 27.8°C (82°F), a significant rise compared to previous months. Even though daytime temperatures experience a slight rise, the wind conditions remain consistent, guaranteeing comfort throughout the day. With a notable increase in sunshine hours, outdoor activities remain a viable option for many. The shift to June indicates a minimal change in rainfall quantities.

Temperature

May's commencement in Santiago de Cuba is accompanied by an average high-temperature of a hot 30°C (86°F), diverging marginally from April's 29.8°C (85.6°F). Santiago de Cuba, during the month of May, experiences an average low-temperature of 21.8°C (71.2°F).

Heat index

May's heat index is calculated to be a very hot 38°C (100.4°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The average relative humidity in May in Santiago de Cuba is 80%.

Rainfall

The month with the most rainfall in Santiago de Cuba, Cuba, is May, when the rain falls for 19.3 days and typically aggregates up to 75mm (2.95") of precipitation.

Sea temperature

In Santiago de Cuba, the average seawater temperature in May is 27.8°C (82°F).
Note: For any water activity, having surface water temperatures from 25°C (77°F) to 29°C (84.2°F) is considered outstanding and highly delightful for lengthened periods.

Daylight

In May, the average length of the day in Santiago de Cuba is 13h and 5min.
On the first day of the month, sunrise is at 06:33 and sunset at 19:27. On the last day of May, sunrise is at 06:23 and sunset at 19:39 CDT.

Sunshine

In May, the average sunshine is 10.8h.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum UV index of 7 in May translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Notice! The Sun's UV exposure elevates with sand and water reflections.