December weather forecastItápolis, Brazil

Weather in December

December, the first month of the summer in Itápolis, is also a moderately hot month, with temperature in the range of an average high of 29.5°C (85.1°F) and an average low of 20.8°C (69.4°F).

Temperature

December's onset brings an average high-temperature of a still warm 29.5°C (85.1°F), showing a minute difference from November's 29.6°C (85.3°F). Itápolis experiences a nighttime temperature average of 20.8°C (69.4°F) during December.

Heat index

The heat index in December is computed to be a sweltering 36°C (96.8°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 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 natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in December in Itápolis is 79%.

Rainfall

In Itápolis, in December, during 28.3 rainfall days, 185mm (7.28") of precipitation is typically accumulated. Throughout the year, there are 207.5 rainfall days, and 1226mm (48.27") of precipitation is accumulated.

Daylight

With an average of 13h and 24min of daylight, December has the longest days of the year in Itápolis, Brazil.
On the first day of December, sunrise is at 05:23 and sunset at 18:45. On the last day of the month, sunrise is at 05:35 and sunset at 19:01 -03.

Sunshine

In December, the average sunshine in Itápolis is 7.6h.

UV index

January through April, June through December, with an average maximum UV index of 6, are months with the highest UV index in Itápolis. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. 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. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.