December weather forecast
Guadalupe, Brazil

December, the first month of the summer in Guadalupe, is still a warm month, with temperature in the range of an average low of 21.8°C (71.2°F) and an average high of 28.9°C (84°F).

Temperature

The arrival of December sees an average high-temperature of a still moderately hot 28.9°C (84°F), hardly diverging from November's 26.8°C (80.2°F). Throughout the month of December, Guadalupe expects an average low of 21.8°C (71.2°F).

Heat index

December's average heat index is calculated to be a torrid 35°C (95°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In December, the average relative humidity is 81%.

Rainfall

In December, the rain falls for 23.8 days. Throughout December, 84mm (3.31") of precipitation is accumulated. Throughout the year, there are 205.4 rainfall days, and 637mm (25.08") of precipitation is accumulated.

Daylight

With an average of 13h and 30min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 04:59 and sunset at 18:25. On the last day of December, in Guadalupe, sunrise is at 05:11 and sunset at 18:42 -03.

Sunshine

In December, the average sunshine is 7.8h.

UV index

January and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.