December weather forecast
Caicó, Brazil

December, the first month of the summer in Caicó, is still a hot month, with an average temperature ranging between min 24.4°C (75.9°F) and max 34.9°C (94.8°F).

Temperature

Welcoming December, Caicó notes an average high-temperature of a hot 34.9°C (94.8°F), nearly consistent with November's 35.5°C (95.9°F). Throughout December, Caicó's nights cool down to an average of 24.4°C (75.9°F).

Heat index

The heat index for December is evaluated at an extremely hot 41°C (105.8°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Understanding the heat index involves considering values for shaded locales 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 'felt air temperature' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

In December, the average relative humidity in Caicó is 52%.

Rainfall

In December, in Caicó, Brazil, the rain falls for 7.2 days. Throughout December, 15mm (0.59") of precipitation is accumulated. In Caicó, during the entire year, the rain falls for 122.6 days and collects up to 442mm (17.4") of precipitation.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year in Caicó.
On the first day of the month, sunrise is at 05:03 and sunset at 17:31. On the last day of December, in Caicó, sunrise is at 05:16 and sunset at 17:46 -03.

Sunshine

In December, the average sunshine in Caicó is 9.2h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in Caicó are January through December, with an average maximum UV index of 7. 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:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.