December weather forecast
Garanhuns, Brazil

The first month of the summer, December, is also a moderately hot month in Garanhuns, Brazil, with temperature in the range of an average high of 29.5°C (85.1°F) and an average low of 18.8°C (65.8°F).

Temperature

In Garanhuns, the months of March and December are known for the peak temperatures, reaching an average high of 29.5°C (85.1°F).

Heat index

During December, the heat index is computed to be a sweltering 35°C (95°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. 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 are of high significance for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

December is the least humid month, with an average relative humidity of 73%.

Rainfall

In Garanhuns, in December, during 15.5 rainfall days, 26mm (1.02") of precipitation is typically accumulated. Throughout the year, in Garanhuns, Brazil, there are 210.8 rainfall days, and 436mm (17.17") of precipitation is accumulated.

Daylight

December has the longest days of the year in Garanhuns, with an average of 12h and 36min of daylight.
On the first day of the month, sunrise is at 04:57 and sunset at 17:33. On the last day of December, in Garanhuns, sunrise is at 05:10 and sunset at 17:48 -03.

Sunshine

The average sunshine in December is 7.6h.

UV index

January through May, September through December, with an average maximum UV index of 6, are months with the highest UV index in Garanhuns. 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: A maximum high UV index of 6 in December translates into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.