December weather forecast
Tenente Portela, Brazil

December, the first month of the summer in Tenente Portela, is also a moderately hot month, with an average temperature ranging between max 29.6°C (85.3°F) and min 18.2°C (64.8°F).

Temperature

In Tenente Portela, December's average high-temperature stands at a still moderately hot 29.6°C (85.3°F), closely related to the preceding month. The average nighttime temperature in Tenente Portela lowers to an enjoyable 18.2°C (64.8°F) throughout December.

Heat index

December's average heat index is estimated at a torrid 36°C (96.8°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The least humid month in Tenente Portela is December, with an average relative humidity of 78%.

Rainfall

In Tenente Portela, during December, the rain falls for 19.1 days and regularly aggregates up to 114mm (4.49") of precipitation. In Tenente Portela, during the entire year, the rain falls for 185.1 days and collects up to 1259mm (49.57") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 48min of daylight.
On the first day of December in Tenente Portela, sunrise is at 05:31 and sunset at 19:16. On the last day of the month, sunrise is at 05:43 and sunset at 19:33 -03.

Sunshine

November and December, with an average of 8.8h of sunshine, are months with the most sunshine.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Tenente Portela. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In December, a regular UV index of 6 translates into these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.