December weather forecastPiratininga, Brazil

Weather in December

December, the first month of the summer in Piratininga, is still a warm month, with an average temperature fluctuating between 19.7°C (67.5°F) and 29.1°C (84.4°F).

Temperature

Piratininga observes an average high-temperature of a still warm 29.1°C (84.4°F) in December, barely different from 28.9°C (84°F) in November. An average minimum temperature of 19.7°C (67.5°F) marks the month of December in Piratininga, Brazil.

Heat index

For December, the heat index is evaluated at a sweltering 35°C (95°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Piratininga, Brazil, the average relative humidity in December is 81%.

Rainfall

In Piratininga, in December, during 27.4 rainfall days, 191mm (7.52") of precipitation is typically accumulated. Throughout the year, in Piratininga, there are 209.6 rainfall days, and 1278mm (50.31") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 13h and 30min of daylight.
On the first day of the month, sunrise is at 05:23 and sunset at 18:48. On the last day of December, sunrise is at 05:35 and sunset at 19:04 -03.

Sunshine

In December, the average sunshine is 7.6h.

UV index

The months with the highest UV index in Piratininga, Brazil, are January, March, August, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 6 in December interprets into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.