December weather forecast
Atyrá, Paraguay

The first month of the summer, December, is still a hot month in Atyrá, Paraguay, with an average temperature varying between 22.3°C (72.1°F) and 33°C (91.4°F).

Temperature

Atyrá, Paraguay, observes a minor difference in average high-temperatures between November's 31.4°C (88.5°F) and December's 33°C (91.4°F). An average nighttime temperature of 22.3°C (72.1°F) is recorded during December.

Heat index

December's mean heat index is estimated at an extremely hot 43°C (109.4°F). Attention: Heat exhaustion and heat cramps are quite likely. Heatstroke becomes a risk with continued exertion.
Records show heat index calculations are tailored for shaded regions and mild winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In December, the average relative humidity is 69%.

Rainfall

In December, in Atyrá, the rain falls for 15.5 days. Throughout December, 104mm (4.09") of precipitation is accumulated. In Atyrá, during the entire year, the rain falls for 153.2 days and collects up to 865mm (34.06") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 42min of daylight.
On the first day of December in Atyrá, Paraguay, sunrise is at 05:49 and sunset at 19:25. On the last day of the month, sunrise is at 06:01 and sunset at 19:42 -03.

Sunshine

In December, the average sunshine is 10.4h.

UV index

January, February, October and December, with an average maximum UV index of 7, are months with the highest UV index in Atyrá. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 7 in December converts into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.