May weather forecast
M. Vilela, São Tomé and Príncipe

Weather in May presents a slightly cooler stance, with the high temperature dropping to 27.8°C (82°F). The decreasing temperature and increasing rainfall signify the onset of the monsoon season. The days continue to be humid, yet the wind speeds begin to escalate, ushering in a refreshing change. Overcast skies and rainy days define the landscape of M. Vilela, São Tomé and Príncipe during May. Hence, the city may appear as a picturesque portrait of a tropical rainy season.

Temperature

M. Vilela, São Tomé and Príncipe, experiences an average high-temperature of a still warm 27.8°C (82°F) with the onset of May, subtly varied from April's 28.6°C (83.5°F). May nights in M. Vilela cool to an average low-temperature of 26.3°C (79.3°F), a marginal decrease from its daytime equivalent.

Heat index

In May, the heat index is appraised at a tropical 31°C (87.8°F). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.
In terms of the heat index, values are set with light wind and shade conditions in mind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

In M. Vilela, the average relative humidity in May is 79%.

Rainfall

In M. Vilela, in May, during 20.5 rainfall days, 122mm (4.8") of precipitation is typically accumulated. In M. Vilela, during the entire year, the rain falls for 241.7 days and collects up to 1287mm (50.67") of precipitation.

Daylight

In May, the average length of the day in M. Vilela is 12h and 8min.
On the first day of the month, sunrise is at 05:26 and sunset at 17:34. On the last day of May, in M. Vilela, sunrise is at 05:27 and sunset at 17:35 GMT.

Sunshine

In May, the average sunshine in M. Vilela is 7.6h.

UV index

The months with the highest UV index in M. Vilela are January through May, October through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 7 during May translates into these guidelines:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.