December weather forecast
M. Vilela, São Tomé and Príncipe

December, the final month of the year, carries forward the comfortable temperature range from November with a high of 27.5°C (81.5°F). Notable reduction in rainfall is observed, hinting at the onset of the dry season. While the winds gradually lose their intensity, the daylight hours seem unaltered, thereby ensuring ample sunlight. As the year concludes, M.Vilela, São Tomé and Príncipe embodies a subdued yet profound winter charm. Hence, the weather in December reflects the tranquillity of mild winters, essentially wrapping the year on a pleasant note.

Temperature

The shift from November to December in M. Vilela is characterized by an average high-temperature of a still warm 27.5°C (81.5°F), not significantly different from the 27.1°C (80.8°F) of November. M. Vilela, in December, registers an average low temperature of 26.6°C (79.9°F), showing a minute reduction from daily highs.

Heat index

For most parts of December, the heat index is appraised at a hot 31°C (87.8°F). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.
Remember that heat index calculations are made for conditions in the shade with light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

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

Rainfall

In M. Vilela, during December, the rain falls for 28.6 days and regularly aggregates up to 159mm (6.26") of precipitation. In M. Vilela, São Tomé and Príncipe, during the entire year, the rain falls for 241.7 days and collects up to 1287mm (50.67") of precipitation.

Daylight

In December, the average length of the day in M. Vilela is 12h and 7min.
On the first day of the month, sunrise is at 05:19 and sunset at 17:26. On the last day of December, in M. Vilela, sunrise is at 05:33 and sunset at 17:40 GMT.

Sunshine

The average sunshine in December in M. Vilela, São Tomé and Príncipe, is 8.2h.

UV index

The months with the highest UV index in M. Vilela, São Tomé and Príncipe, 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 health risk from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 7 in December suggests the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.