December weather forecast
Tarrafas, Brazil

The first month of the summer, December, is still a hot month in Tarrafas, Brazil, with an average temperature ranging between max 34.2°C (93.6°F) and min 23.9°C (75°F).

Temperature

Tarrafas observes a minor difference in average high-temperatures between November's 35.4°C (95.7°F) and December's 34.2°C (93.6°F). Tarrafas records a steady low-temperature average of 23.9°C (75°F) during December.

Heat index

For most parts of December, the heat index is appraised at a blisteringly hot 40°C (104°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In December, the average relative humidity in Tarrafas is 54%.

Rainfall

In Tarrafas, during December, the rain falls for 13.8 days and regularly aggregates up to 43mm (1.69") of precipitation. In Tarrafas, during the entire year, the rain falls for 168.6 days and collects up to 686mm (27.01") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:13 and sunset at 17:42. On the last day of December, sunrise is at 05:27 and sunset at 17:57 -03.

Sunshine

In December, the average sunshine is 8.4h.

UV index

The months with the highest UV index are January, March, July through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 7 in December transforms into the following instructions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.