December weather forecast
Formosa, Argentina

The first month of the summer, December, is also a hot month in Formosa, Argentina, with temperature in the range of an average low of 21.5°C (70.7°F) and an average high of 33.2°C (91.8°F).

Temperature

In Formosa, the average high-temperature in December is relatively the same as in November - a still hot 33.2°C (91.8°F). In December, the average low-temperature is 21.5°C (70.7°F).

Heat index

The average heat index in December is computed to be an extremely hot 43°C (109.4°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, clothing, metabolic differences). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. 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 Formosa is 67%.

Rainfall

In Formosa, it is raining for 13.2 days, with typically 87mm (3.43") of accumulated precipitation. In Formosa, Argentina, during the entire year, the rain falls for 138.6 days and collects up to 788mm (31.02") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 45min of daylight.
On the first day of December, sunrise is at 05:52 and sunset at 19:31. On the last day of the month, sunrise is at 06:03 and sunset at 19:48 -03.

Sunshine

The months with the most sunshine in Formosa are November and December, with an average of 10.2h of sunshine.

UV index

January, February and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 in December interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.