December weather forecast
Olímpia, Brazil

December, the first month of the summer in Olímpia, is still a warm month, with an average temperature varying between 29.4°C (84.9°F) and 20.8°C (69.4°F).

Temperature

Olímpia measures an average high-temperature of a still warm 29.4°C (84.9°F) in December, nearly consistent with the preceding month. Olímpia witnesses an average low-temperature of 20.8°C (69.4°F) throughout the month of December.

Heat index

Throughout December, the heat index is estimated at a torrid 36°C (96.8°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. 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 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In December, the average relative humidity in Olímpia is 82%.

Rainfall

In Olímpia, Brazil, in December, during 28.5 rainfall days, 194mm (7.64") of precipitation is typically accumulated. Throughout the year, there are 210.1 rainfall days, and 1237mm (48.7") of precipitation is accumulated.

Daylight

The month with the longest days in Olímpia, Brazil, is December, with an average of 13h and 24min of daylight.
On the first day of the month, sunrise is at 05:25 and sunset at 18:43. On the last day of December, in Olímpia, sunrise is at 05:37 and sunset at 18:59 -03.

Sunshine

The average sunshine in December in Olímpia is 7.7h.

UV index

The months with the highest UV index are January, March through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.