December weather forecast
Surubim, Brazil

December, the first month of the summer in Surubim, is also a hot month, with an average temperature varying between 21.5°C (70.7°F) and 30.8°C (87.4°F).

Temperature

December's onset sees an average high-temperature of a still tropical 30.8°C (87.4°F), exhibiting a slight fluctuation from the previous month. Surubim in December experiences a low-temperature average of 21.5°C (70.7°F).

Heat index

The heat index in December is computed to be a fiery hot 37°C (98.6°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

With an average relative humidity of 71%, December is the least humid month.

Rainfall

In Surubim, in December, during 13.8 rainfall days, 15mm (0.59") of precipitation is typically accumulated. In Surubim, during the entire year, the rain falls for 203.9 days and collects up to 339mm (13.35") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 36min of daylight.
On the first day of the month, sunrise is at 04:55 and sunset at 17:28. On the last day of December, in Surubim, Brazil, sunrise is at 05:09 and sunset at 17:43 -03.

Sunshine

In December, the average sunshine is 7.1h.

UV index

February, March and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 7 in December translates into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.