December weather forecast
Gurinhém, Brazil

December, the first month of the summer in Gurinhém, is also a hot month, with an average temperature ranging between max 30.9°C (87.6°F) and min 23.6°C (74.5°F).

Temperature

December's arrival brings an average high-temperature of a still tropical 30.9°C (87.6°F), slightly deviating from November's 30.5°C (86.9°F). Gurinhém cools down to an average low-temperature of 23.6°C (74.5°F) throughout the month of December.

Heat index

December's mean heat index is calculated to be a very hot 38°C (100.4°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. 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 human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in December in Gurinhém is 72%.

Rainfall

In Gurinhém, during December, the rain falls for 16.4 days and regularly aggregates up to 19mm (0.75") of precipitation. Throughout the year, there are 217.5 rainfall days, and 510mm (20.08") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of December, sunrise is at 04:55 and sunset at 17:26. On the last day of the month, sunrise is at 05:09 and sunset at 17:40 -03.

Sunshine

The average sunshine in December in Gurinhém is 7.3h.

UV index

March through September and December, with an average maximum UV index of 6, are months with the lowest UV index in Gurinhém. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 6 during December translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.