December weather forecast
Maceió, Brazil

December brings with it another slight increment in temperature, continuing the city's warm climatic trend. Parallel to this, Maceió sees a surge in rainfall, albeit minimal, measuring 63mm (2.48"). The humidity level rises slightly, accompanying more rain. Sun worshippers are delighted with increased sunshine hours, making tan lines a common sight this month. This, combined with the lurking UV index, certifies December as an ideal month for enjoying the sun-soaked Brazilian coastline, while also witnessing the city transitioning into its rainy season.

Temperature

With the start of December, Maceió measures an average high-temperature of a tropical 30°C (86°F), not significantly differing from November's 29.9°C (85.8°F). Maceió's temperature drops to an average low of 22°C (71.6°F) during the nights of December.

Heat index

For most parts of December, the heat index is evaluated at a sweltering 37°C (98.6°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In Maceió, the average relative humidity in December is 75.8%.

Rainfall

In Maceió, in December, it is raining for 9 days, with typically 63mm (2.48") of accumulated precipitation. In Maceió, during the entire year, the rain falls for 185 days and collects up to 2071mm (81.54") of precipitation.

Sea temperature

In Maceió, in December, the average water temperature is 27.4°C (81.3°F).
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

The month with the longest days is December, with an average of 12h and 42min of daylight.
On the first day of December in Maceió, sunrise is at 04:52 and sunset at 17:31. On the last day of the month, sunrise is at 05:05 and sunset at 17:46 -03.

Sunshine

In Maceió, the average sunshine in December is 8.5h.

UV index

January through April, September through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an extreme health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 12 in December, converts into the following recommendations:
Enforce all necessary safety measures, unprotected skin may suffer burns swiftly. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Broad-spectrum SPF 30+ sunscreen must be generously applied and reapplied every two hours or post any outdoor activity or swim. Stay cautious! Sand and water reflections increase UV radiation potency.