December weather forecast
Aracaju, Brazil

The last month of the year, December, welcomes Aracaju's inhabitants, and visitors, to a climate that embodies a tropical holiday spirit. Though the average rainfall ascends to 26mm (1.02") over nearly 10.8 days, it does little to dampen the city's energetic atmosphere. December invites beach lovers and sun seekers with its warm winds and inviting sea temperatures of 27.3°C (81.1°F). As the city gears up for holiday celebrations, the weather lends a conducive rhythm, ending the year on a pleasant note.

Temperature

As November transitions into December, Aracaju records an average high-temperature of a hot 30°C (86°F), showing a gentle shift from the preceding month. December nights in Aracaju observe an average temperature dip to a moderately hot 24.7°C (76.5°F).

Heat index

December's average heat index is computed to be a torrid 36°C (96.8°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The months with the lowest humidity in Aracaju are January through March and December, with an average relative humidity of 73%.

Rainfall

In Aracaju, in December, during 10.8 rainfall days, 26mm (1.02") of precipitation is typically accumulated. In Aracaju, during the entire year, the rain falls for 197.6 days and collects up to 586mm (23.07") of precipitation.

Sea temperature

In December, the average sea temperature in Aracaju is 27.3°C (81.1°F).
Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

December has the longest days of the year in Aracaju, with an average of 12h and 48min of daylight.
On the first day of the month, sunrise is at 04:55 and sunset at 17:39. On the last day of December, sunrise is at 05:08 and sunset at 17:54 -03.

Sunshine

The average sunshine in December in Aracaju is 8.2h.

UV index

January through May, September through December, with an average maximum UV index of 7, are months with the highest UV index in Aracaju, Brazil. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In December, a daily UV index of 7 turns into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Stay aware! UV radiation is magnified when reflecting off sand and water.