Marechal Deodoro weather in December

In December, Marechal Deodoro sees average daytime highs of 30°C and overnight lows near 24°C, with 33 mm of rain across 12 wet days and about 12.6 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 43% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of December to 12 h 36 min by month's end. Set against the rest of the year, December is Marechal Deodoro's 4th-clearest and 2nd-windiest month. For the whole year in context, see Marechal Deodoro's year-round climate.

Daytime high
30°
4th warmest
Overnight low
24°
8th coldest
Rainfall
33 mm
12 wet days
Daylight
12 h 36 min
5:03 AM – 5:37 PM
Cloud cover
51%
4th clearest
Wind
13 km/h
2nd windiest
Solar energy
6.38 kWh/m²
Travel score
4.8
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in Marechal Deodoro reaches about 30°C in the afternoon and slips back to 24°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024
313024

How December really feels in Marechal Deodoro

Once humidity and wind are folded in, December averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Marechal Deodoro weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°5615.612.54.3
Feb30° / 24°5816.612.33.9
Mar31° / 24°6918.912.13.9
Apr30° / 24°9919.711.84.0
May28° / 23°12422.311.64.3
Jun27° / 22°13423.711.44.5
Jul27° / 21°13224.511.54.6
Aug27° / 21°8622.311.74.9
Sep28° / 22°5917.511.95.4
Oct29° / 22°4814.612.25.3
Nov30° / 23°3611.212.45.1
Dec30° / 24°331212.64.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 37%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26535
36535
46535
56634
66634
76634
86634
96634
106634
116535
126634
136535
146535
156436
166436
176337
186337
196238
206337
216238
226139
236139
246040
256139
266139
276139
286040
296040
306139
316040

Chance of precipitation in December

Any precipitation

Marechal Deodoro gets around 33 mm of rain over 12 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 38% and peaks near 45% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
134
234
333
433
533
633
733
833
934
1034
1134
1235
1335
1436
1536
1637
1738
1839
1940
2041
2142
2243
2343
2443
2544
2644
2744
2844
2944
3044
3145

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 87% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
11486
21486
31486
41486
51486
61387
71387
81387
91387
101387
111387
121387
131387
141387
151387
161387
171387
181387
191387
201387
211387
221387
231387
241387
251387
261387
271387
281288
291288
301288
311288

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 30 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 6 minutes over December. Sunrise moves from 4:58 AM to 5:10 AM, and sunset from 5:29 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.54:585:29
212.54:585:30
312.54:585:30
412.54:585:31
512.54:595:31
612.54:595:32
712.54:595:32
812.55:005:33
912.65:005:33
1012.65:005:34
1112.65:015:34
1212.65:015:35
1312.65:025:35
1412.65:025:36
1512.65:025:36
1612.65:035:37
1712.65:035:37
1812.65:045:38
1912.65:045:38
2012.65:055:39
2112.65:055:39
2212.65:065:40
2312.65:065:40
2412.65:065:40
2512.65:075:41
2612.65:075:41
2712.65:085:42
2812.65:085:42
2912.65:095:43
3012.65:095:43
3112.65:105:44

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.38 kWh/m².

For context, solar energy here swings from a low near 4.06 kWh/m² to a high of 6.39 kWh/m² in November across the year — December's 6.38 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.4Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in December

Hazard calendar for Marechal Deodoro

In seasonPeak

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

Marechal Deodoro's rainy season runs March–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 Marechal Deodoro?

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

4.8
Sightseeing
5th-best month of the year
6.6
Beach & pool
2nd-best month of the year

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

What to pack for Marechal Deodoro in December

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

In December, Marechal Deodoro sees daytime highs around 30°C and nights near 24°C. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.

light clothessun protectionrain gear

Sea temperature near Marechal Deodoro 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 18 km away) is warmest in April at about 29°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
Jan28Warm
Feb28Tropical
Mar28Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct26Warm
Nov27Warm
Dec27Warm

UV index in Marechal Deodoro 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 Marechal Deodoro peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 highExtremeMar 11UV 15Jun 23UV 9
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Marechal Deodoro?

Marechal Deodoro sits at 9.7°S, 35.9°W, 12 m above sea level, in Brazil. The nearest listed city is Pilar, 14 km away.

Topography around Marechal Deodoro

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

Within 3 km, the terrain around Marechal Deodoro has only modest variations in elevation — a maximum elevation change of 98 m around an average of 16 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 137 m; within 80 km, large variations in elevation — a maximum elevation change of 909 m.

The land around Marechal Deodoro is covered by water (38%) and grassland (26%) within 3 km, grassland (28%), water (26%) and cropland (20%) within 16 km, and grassland (41%) and water (31%) within 80 km.

3 km
98 m
16 km
137 m
80 km
909 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Pilar 14 km · Satuba 18 km · Maceió 18 km · São Miguel dos Campos 23 km · Rio Largo 26 km · Atalaia 27 km · Boca da Mata 36 km · Messias 37 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 Marechal Deodoro (-9.7103°, -35.895°, elevation 12 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).