December weather forecast
Soure, Brazil

December, the first month of the summer in Soure, is still a tropical month, with an average temperature ranging between max 30.5°C (86.9°F) and min 26.1°C (79°F).

Temperature

The shift into December records an average high-temperature of a still hot 30.5°C (86.9°F), subtly varied from November's 31.2°C (88.2°F). December notes an average low temperature of 26.1°C (79°F), subtly down from the daytime highs.

Heat index

December's mean heat index is estimated at a torrid 38°C (100.4°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. 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 particularly meaningful for babies and toddlers. 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 human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In December, the average relative humidity in Soure is 75%.

Rainfall

In December, in Soure, the rain falls for 25.2 days. Throughout December, 205mm (8.07") of precipitation is accumulated. Throughout the year, there are 296.2 rainfall days, and 2404mm (94.65") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature in Soure is 28.4°C (83.1°F).
Note: For any water activity, the surface water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are deemed excellent and incredibly pleasant for longer durations.

Daylight

December has the longest days of the year in Soure, with an average of 12h and 12min of daylight.
On the first day of the month, sunrise is at 05:58 and sunset at 18:08. On the last day of December, in Soure, Brazil, sunrise is at 06:12 and sunset at 18:22 -03.

Sunshine

In December, the average sunshine is 8.1h.

UV index

February, March, May through December, 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 hazard from unsafe exposure to UV radiation for the average person.
Note: In December, the maximum UV index of 7 translates into these guidelines:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Watch out! Reflections from sand and water can surge UV radiation exposure.