December weather forecast
Selva, Argentina

December, the first month of the summer in Selva, is still a hot month, with an average temperature varying between 33.1°C (91.6°F) and 20°C (68°F).

Temperature

December registers an average high-temperature of a still tropical 33.1°C (91.6°F), slightly varied from November's 30.4°C (86.7°F). A significant drop from the day's peak to an average low-temperature of 20°C (68°F) is noted during the nights in December in Selva.

Heat index

For December, the heat index is calculated to be a fiery hot 37°C (98.6°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In Selva, the average relative humidity in December is 53%.

Rainfall

In Selva, in December, it is raining for 10.8 days, with typically 60mm (2.36") of accumulated precipitation. In Selva, during the entire year, the rain falls for 102.1 days and collects up to 528mm (20.79") of precipitation.

Daylight

The month with the longest days is December, with an average of 14h and 0min of daylight.
On the first day of December, sunrise is at 05:59 and sunset at 19:55. On the last day of the month, sunrise is at 06:10 and sunset at 20:12 -03.

Sunshine

December has the most sunshine of the year, with an average of 9.4h of sunshine.

UV index

January, February and December, with an average maximum UV index of 7, are months with the highest UV index in Selva. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 7 during December leads to these advisories:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.