December weather forecast
Granjeiro, Brazil

The first month of the summer, December, is still a hot month in Granjeiro, Brazil, with an average temperature fluctuating between 32°C (89.6°F) and 21.6°C (70.9°F).

Temperature

The arrival of December sees a recorded average high-temperature of a still hot 32°C (89.6°F), showing little divergence from the previous month's conditions. In Granjeiro, December's nights observe an average temperature dip to an agreeable 21.6°C (70.9°F).

Heat index

December's heat index is appraised at a fiery hot 36°C (96.8°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level 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 hold particular significance for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In December, the average relative humidity is 58%.

Rainfall

In Granjeiro, during December, the rain falls for 14.2 days and regularly aggregates up to 40mm (1.57") of precipitation. In Granjeiro, during the entire year, the rain falls for 131.6 days and collects up to 360mm (14.17") 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 December in Granjeiro, sunrise is at 05:11 and sunset at 17:40. On the last day of the month, sunrise is at 05:24 and sunset at 17:55 -03.

Sunshine

In Granjeiro, the average sunshine in December is 8.3h.

UV index

The months with the lowest UV index in Granjeiro are January through August and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 6 in December translates into these instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.