Seropédica weather in December

In December, Seropédica sees average daytime highs of 29°C and overnight lows near 22°C, with 227 mm of rain across 20.8 wet days and about 13.4 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 13% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 13 h 18 min at the start of December to 13 h 24 min by month's end. Set against the rest of the year, December is Seropédica's 11th-clearest and 5th-windiest month. For the whole year in context, see Seropédica's year-round climate.

Daytime high
29°
4th warmest
Overnight low
22°
9th coldest
Rainfall
227 mm
20.8 wet days
Daylight
13 h 24 min
6:09 AM – 7:33 PM
Cloud cover
74%
11th clearest
Wind
7 km/h
5th windiest
Solar energy
5.57 kWh/m²
Travel score
4.0
out of 10

Seropédica is human settlement in Brazil.

Air quality
Moderate
PM2.5 14.7 µg/m³ · 2014

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 29°C through the month.

A typical December day in Seropédica reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 33°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12822
22822
32822
42822
52822
62822
72822
82822
92922
102922
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212923
222923
232923
242923
253023
263023
273023
283023
293023
303023
313023

How December really feels in Seropédica

Once humidity and wind are folded in, December averages 11 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
11
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.

Seropédica weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°2732113.23.6
Feb31° / 23°19717.612.83.7
Mar29° / 22°20020.112.24.1
Apr28° / 21°10613.111.55.8
May26° / 18°6810.310.96.8
Jun25° / 17°406.610.67.6
Jul25° / 16°406.610.77.7
Aug25° / 17°356.811.27.5
Sep26° / 18°7911.111.96.5
Oct27° / 20°11413.912.55.8
Nov27° / 21°19018.713.14.9
Dec29° / 22°22720.813.44.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12575
22476
32476
42377
52377
62377
72377
82377
92575
102575
112674
122674
132773
142773
152872
163070
173070
183070
193169
203169
213169
223268
233268
243268
253268
263169
273169
283070
293070
302971
312971

Chance of precipitation in December

Any precipitation

Seropédica gets around 227 mm of rain over 20.8 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 67% and peaks near 74% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
162
262
362
462
562
663
763
863
963
1063
1163
1264
1364
1465
1565
1666
1767
1867
1968
2069
2170
2271
2371
2472
2573
2673
2774
2874
2974
3074
3174

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 59% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
111247410
211146420
311145440
411045450
50944460
60943480
70842490
80741520
90741520
100640540
110639550
120539560
130538570
140437590
150436600
160435610
170334630
180333640
190332650
200332650
210331660
220330670
230329671
240328681
250228691
260227701
270226711
280226711
290226702
300226702
310226702

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 18 min at the start of December to 13 h 24 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 6:06 AM to 6:17 AM, and sunset from 7:23 PM to 7:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:067:23
213.36:067:24
313.36:067:25
413.36:067:25
513.36:067:26
613.36:067:27
713.36:077:27
813.46:077:28
913.46:077:29
1013.46:077:29
1113.46:087:30
1213.46:087:30
1313.46:087:31
1413.46:097:32
1513.46:097:32
1613.46:097:33
1713.46:107:33
1813.46:107:34
1913.46:117:34
2013.46:117:35
2113.46:117:35
2213.46:127:36
2313.46:127:36
2413.46:137:37
2513.46:137:37
2613.46:147:37
2713.46:147:38
2813.46:157:38
2913.46:167:39
3013.46:167:39
3113.46:177:39

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.57 kWh/m².

For context, solar energy here swings from a low near 3.32 kWh/m² to a high of 5.86 kWh/m² in February across the year — December's 5.57 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in December

Hazard calendar for Seropédica

In seasonPeak

In December, Seropédica sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Seropédica's rainy season runs November–March, 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 Seropédica?

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

4.0
Sightseeing
10th-best month of the year
5.1
Beach & pool
11th-best month of the year

December is a reasonable time to visit Seropédica for sightseeing.

What to pack for Seropédica in December

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

In December, Seropédica sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

Sea temperature near Seropédica in December

The nearest coast averages about 24°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 43 km away) is warmest in February at about 26°C and coldest in August near 21°C.

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

20°22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug21Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec24Warm

UV index in Seropédica in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Seropédica peaks around January 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeJan 16UV 14Jul 13UV 5
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May6High
Jun6High
Jul5Moderate
Aug8Very high
Sep6High
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Seropédica in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Seropédica is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 10 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Seropédica's WHO annual average of 14.7 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1221 µg/m³Dec 2310 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar11Good
Apr13Moderate
May17Moderate
Jun20Moderate
Jul21Moderate
Aug18Moderate
Sep21Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Seropédica?

Seropédica sits at 22.7°S, 43.7°W, 40 m above sea level, in Brazil. The nearest listed city is Universidade Rural, 3.0 km away.

Topography around Seropédica

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

Within 3 km, the terrain around Seropédica has only modest variations in elevation — a maximum elevation change of 136 m around an average of 39 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 913 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,224 m.

The land around Seropédica is covered by grassland (45%) and trees (36%) within 3 km, grassland (47%) and trees (40%) within 16 km, and trees (37%), grassland (28%) and water (28%) within 80 km.

3 km
136 m
16 km
913 m
80 km
2,224 m
treesgrasslandartificial surfaceswaterwetlandmangroves
December weather nearby: Universidade Rural 3.0 km · Japeri 13 km · Itaguaí 14 km · Paracambi 15 km · Queimados 16 km · Piraí 23 km · Mendes 24 km · Nova Iguaçu 26 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 Seropédica (-22.7439°, -43.7075°, elevation 40 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).