December weather forecast
Aracaju, Brazil

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Weather in December

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.

Frequently asked questions

Is it hot in Aracaju during December?

The high-temperature, in December, in Aracaju, is 30°C (86°F), while the low-temperature averages to 24.7°C (76.5°F). In December, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 36°C (96.8°F).

What are the least humid months in Aracaju?

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

What is the average humidity in December in Aracaju?

The average relative humidity in December in Aracaju, Brazil, is 73%.

How much does it rain in Aracaju in December?

In Aracaju, in December, during 10.8 rainfall days, 26mm (1.02") of precipitation is typically accumulated.

What is the sea water temperature in December in Aracaju?

In Aracaju, Brazil, in December, the average water temperature is 27.3°C (81.1°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

When are the longest days in Aracaju?

With an average of 12h and 48min of daylight, December has the longest days of the year in Aracaju.

What is the average length of the day in December in Aracaju?

In Aracaju, the average day length in December is 12h and 46min.

When is the sunrise / sunset in December in Aracaju?

In December, on the first day of the month, sunrise is at 04:55 and sunset at 17:39. On the last day of the month, sunrise is at 05:08 and sunset at 17:54 -03.

How many hours of sunshine does Aracaju have in December?

In December, the average sunshine duration in Aracaju is 8.2h.

What are the months with the highest UV index in Aracaju?

The months with the highest UV index in Aracaju, Brazil, are January through May, September through December, with an average maximum UV index of 7.

How high is the UV index in December in Aracaju?

The average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in December
Aracaju, Brazil

Average temperature in December - Aracaju, Brazil
  • Average high temperature in December: 30°C

The warmest month (with the highest average high temperature) is March (30.8°C).
The months with the lowest average high temperature are July and August (26.5°C).

  • Average low temperature in December: 24.7°C

The month with the highest average low temperature is March (25.8°C).
The coldest month (with the lowest average low temperature) is September (22.7°C).

Average pressure in December
Aracaju, Brazil

Average pressure in December - Aracaju, Brazil
  • Average pressure in December: 1012.1mbar

The month with the highest atmospheric pressure is August (1017.4mbar).
The month with the lowest atmospheric pressure is March (1011.9mbar).

Average wind speed in December
Aracaju, Brazil

Average wind speed in December - Aracaju, Brazil
  • Average wind speed in December: 18.4km/h

The windiest month (with the highest average wind speed) is November (18.8km/h).
The calmest month (with the lowest average wind speed) is May (13.7km/h).

Average humidity in December
Aracaju, Brazil

Average humidity in December - Aracaju, Brazil
  • Average humidity in December: 73%

The months with the highest relative humidity are June and July (79%).
The months with the lowest relative humidity are January, February, March and December (73%).

Average rainfall in December
Aracaju, Brazil

Average rainfall in December - Aracaju, Brazil
  • Average rainfall in December: 26mm

The wettest month (with the highest rainfall) is July (96mm).
The driest month (with the least rainfall) is November (19mm).

Average rainfall days in December
Aracaju, Brazil

Average rainfall days in December - Aracaju, Brazil
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is July (24.9 days).
The month with the least rainy days is March (10.6 days).

Average sea temperature in December
Aracaju, Brazil

Average sea temperature in December - Aracaju, Brazil
  • Average sea temperature in December: 27.3°C

The best months for swimming (with the highest average sea temperature) are March and April (28.7°C).
The coldest month (with the lowest average sea temperature) is August (25.8°C).

Average daylight in December /
Average sunshine in December
Aracaju, Brazil

Average daylight in December / Average sunshine in December - Aracaju, Brazil
  • Average daylight in December: 12h and 5min

The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 30min).

  • Average sunshine in December: 8h and 1min

The month with the most sunshine is March (Average sunshine: 8h and 24min).
The month with the least sunshine is October (Average sunshine: 7h and 30min).

Average sunshine days in December
Aracaju, Brazil

Average sunshine days in December - Aracaju, Brazil
  • Average sunshine days in December: 16.1 days

The month with the most sunshine days is March (19 days).
The month with the least sunshine days is July (3.8 days).

Average UV index in December
Aracaju, Brazil

Average UV index in December - Aracaju, Brazil
  • Average UV index in December: 7

The months with the highest UV index are January, February, March, April, May, September, October, November and December (UV index 7).
The months with the lowest UV index are June, July and August (UV index 6).

Average cloud cover in December
Aracaju, Brazil

Average cloud cover in December - Aracaju, Brazil
  • Average cloud cover in December: 36

The month with the most cloud cover is July (Cloud cover 46).
The month with the least cloud cover is March (Cloud cover 35).

Average visibility in December
Aracaju, Brazil

Average visibility in December - Aracaju, Brazil
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

Aracaju, Brazil

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