December weather forecast
Parana, Argentina

December, the first month of the summer in Parana, is a hot month, with temperature in the range of an average high of 31.5°C (88.7°F) and an average low of 18°C (64.4°F).

Temperature

In December, the average high-temperature marginally rises from a moderately hot 28.5°C (83.3°F) in November to a tropical 31.5°C (88.7°F). The average low-temperature, in Parana, is 18°C (64.4°F).

Heat index

In December, the average heat index is appraised at a sweltering 35°C (95°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, clothing, pregnancy), and activity. 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 especially crucial for babies and toddlers. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. 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 heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in December is 57%.

Rainfall

In Parana, Argentina, during December, the rain falls for 9.5 days and regularly aggregates up to 61mm (2.4") of precipitation. Throughout the year, in Parana, Argentina, there are 100.9 rainfall days, and 542mm (21.34") of precipitation is accumulated.

Daylight

With an average of 14h and 11min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:49 and sunset at 19:53. On the last day of December, sunrise is at 05:59 and sunset at 20:10 -03.

Sunshine

December has the most sunshine of the year, with an average of 11.2h of sunshine.

UV index

The months with the highest UV index are January and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 7 in December transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.