Aracaju weather in December

In December, Aracaju sees average daytime highs of 27°C and overnight lows near 25°C, with 30 mm of rain across 9.2 wet days and about 12.6 hours of daylight. It is the 5th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 53% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of December to 12 h 36 min by month's end. Set against the rest of the year, December is Aracaju's 8th-clearest and 3rd-windiest month. For the whole year in context, see Aracaju's year-round climate.

Daytime high
27°
5th warmest
Overnight low
25°
8th coldest
Rainfall
30 mm
9.2 wet days
Daylight
12 h 36 min
5:05 AM – 5:44 PM
Cloud cover
44%
8th clearest
Wind
21 km/h
3rd windiest
Solar energy
6.64 kWh/m²
Travel score
6.9
out of 10

Aracaju is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical December day in Aracaju reaches about 27°C in the afternoon and slips back to 25°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 27°C. Set against its neighbours, December runs on par with November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12725
22725
32725
42725
52725
62725
72725
82725
92725
102725
112725
122725
132725
142725
152725
162725
172725
182725
192725
202725
212725
222725
232725
242725
252725
262725
272725
282725
292725
302725
312725

Aracaju weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 25°5214.112.66.2
Feb27° / 26°6416.112.45.6
Mar27° / 26°7717.912.15.6
Apr27° / 26°13120.311.85.1
May27° / 25°18623.511.54.8
Jun26° / 24°16724.111.44.8
Jul25° / 24°13824.111.45.0
Aug25° / 23°10322.411.65.3
Sep25° / 24°6717.411.96.0
Oct26° / 24°6014.112.26.5
Nov26° / 25°4111.112.56.8
Dec27° / 25°309.212.66.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26832
36832
46832
56832
66832
76832
86832
96733
106733
116733
126634
136733
146733
156634
166634
176733
186733
196634
206634
216634
226535
236535
246535
256535
266535
276436
286436
296436
306436
316436

Chance of precipitation in December

Any precipitation

Aracaju gets around 30 mm of rain over 9.2 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
131
230
329
428
528
627
727
827
927
1028
1128
1228
1328
1429
1529
1630
1730
1830
1931
2031
2131
2231
2332
2432
2532
2632
2733
2833
2934
3035
3136

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the oppressive band about 93% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
15932
25932
35932
45932
55923
65923
75923
85923
95923
105923
115923
125923
135923
145932
155932
165932
176922
186922
196922
206931
216931
226931
236931
246922
255932
265932
275932
285932
295932
305932
315923

Wind in December

Winds average 21 km/h in December.

Across December, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2420breezy
2520breezy
2620breezy
2720breezy
2820breezy
2920breezy
3020breezy
3120breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 36 min at the start of December to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:00 AM to 5:13 AM, and sunset from 5:36 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:005:36
212.65:005:36
312.65:015:37
412.65:015:37
512.65:015:38
612.65:025:38
712.65:025:39
812.65:025:39
912.65:035:40
1012.65:035:40
1112.65:035:41
1212.65:045:41
1312.65:045:42
1412.65:055:43
1512.65:055:43
1612.65:055:44
1712.65:065:44
1812.65:065:45
1912.65:075:45
2012.65:075:45
2112.65:085:46
2212.65:085:46
2312.65:095:47
2412.65:095:47
2512.65:105:48
2612.65:105:48
2712.65:115:49
2812.65:115:49
2912.65:125:50
3012.65:125:50
3112.65:135:50

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.64 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.17 kWh/m² to a high of 6.64 kWh/m² in December across the year — December's 6.64 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.7Intense
56.7Intense
66.7Intense
76.7Intense
86.7Intense
96.7Intense
106.7Intense
116.7Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
316.6Intense
Planning a trip in December

Hazard calendar for Aracaju

In seasonPeak

None of Aracaju's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Aracaju's rainy season runs April–August, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Aracaju?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.9
Sightseeing
1st-best month of the year
6.9
Beach & pool
1st-best month of the year

December is a reasonable time to visit Aracaju for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Aracaju in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Aracaju sees daytime highs around 27°C and nights near 25°C. Pack sun protection. Worth having: light clothes, rain gear and a windbreaker. About 9 days see rain.

sun protectionlight clothesrain geara windbreaker

Sea temperature near Aracaju in December

The nearest coast averages about 27°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 22 km away) is warmest in April at about 28°C and coldest in August near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar28Tropical
Apr28Tropical
May28Warm
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct26Warm
Nov26Warm
Dec27Warm

UV index in Aracaju in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Aracaju peaks around February 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 9 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 17UV 15Jul 12UV 9
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov13Extreme
Dec12Extreme
Location & terrain

Where is Aracaju?

Aracaju sits at 10.9°S, 37.1°W, 11 m above sea level, in Brazil. The nearest listed city is Barra dos Coqueiros, 4.0 km away.

Topography around Aracaju

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Aracaju.

Within 3 km, the terrain around Aracaju has only modest variations in elevation — a maximum elevation change of 69 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 163 m; within 80 km, large variations in elevation — a maximum elevation change of 694 m.

The land around Aracaju is covered by artificial surfaces (77%) within 3 km, water (30%), grassland (26%) and trees (20%) within 16 km, and grassland (44%) and water (30%) within 80 km.

3 km
69 m
16 km
163 m
80 km
694 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Barra dos Coqueiros 4.0 km · Nossa Senhora do Socorro 9.0 km · Laranjeiras 16 km · São Cristóvão 19 km · Maruim 19 km · Itaporanga d'Ajuda 28 km · Areia Branca 32 km · Japaratuba 38 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Aracaju (-10.9111°, -37.0717°, elevation 11 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).