Paraíba do Sul weather in December

In December, Paraíba do Sul sees average daytime highs of 27°C and overnight lows near 20°C, with 272 mm of rain across 23 wet days and about 13.3 hours of daylight. It is the 4th-warmest and 1st-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 9% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 18 min at the start of December to 13 h 18 min by month's end. Set against the rest of the year, December is Paraíba do Sul's 11th-clearest and 6th-windiest month. For the whole year in context, see Paraíba do Sul's year-round climate.

Daytime high
27°
4th warmest
Overnight low
20°
10th coldest
Rainfall
272 mm
23 wet days
Daylight
13 h 18 min
6:09 AM – 7:30 PM
Cloud cover
77%
11th clearest
Wind
7 km/h
6th windiest
Solar energy
5.48 kWh/m²
Travel score
4.4
out of 10

Paraíba do Sul 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 Paraíba do Sul reaches about 27°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 31°C. Set against its neighbours, December runs about 1°C warmer than November and about 1°C cooler than January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12719
22719
32719
42719
52719
62719
72719
82719
92719
102719
112719
122720
132720
142720
152720
162720
172820
182820
192820
202820
212820
222820
232820
242820
252820
262820
272820
282820
292820
302820
312820

Paraíba do Sul weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°27221.613.24.2
Feb29° / 20°18316.712.84.4
Mar28° / 19°19120.412.24.7
Apr26° / 18°7712.711.56.1
May24° / 15°529.3117.0
Jun23° / 14°275.510.77.7
Jul23° / 14°265.210.87.8
Aug24° / 14°30611.27.8
Sep25° / 16°729.811.96.8
Oct26° / 17°1201512.55.7
Nov26° / 18°21620.113.14.8
Dec27° / 20°2722313.34.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11981
21981
31882
41783
51684
61684
71783
81783
91783
101882
111882
121981
132179
142179
152278
162377
172476
182476
192575
202575
212575
222575
232575
242476
252575
262575
272377
282377
292278
302278
312278

Chance of precipitation in December

Any precipitation

Paraíba do Sul gets around 272 mm of rain over 23 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 74% and peaks near 77% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
170
270
370
471
571
672
772
872
973
1073
1173
1273
1374
1474
1574
1674
1774
1875
1975
2075
2175
2276
2376
2476
2576
2677
2777
2877
2976
3076
3176

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 79% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1631594
2530605
3529615
4528616
5426646
6425647
7424657
8323677
9322678
10321688
11320698
12219718
13219718
14218719
15217729
16117739
17116749
18116749
19116749
20116749
21115759
221157410
231157410
240147610
250147610
260147511
270147511
280147511
290147511
300147412
310157312

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 7 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
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 18 min at the start of December to 13 h 18 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 6:05 AM to 6:16 AM, and sunset from 7:21 PM to 7:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:057:21
213.36:057:21
313.36:057:22
413.36:067:23
513.36:067:23
613.36:067:24
713.36:067:24
813.36:067:25
913.36:077:26
1013.36:077:26
1113.36:077:27
1213.36:087:28
1313.36:087:28
1413.36:087:29
1513.36:097:29
1613.36:097:30
1713.46:097:30
1813.46:107:31
1913.46:107:31
2013.46:117:32
2113.46:117:32
2213.46:117:33
2313.46:127:33
2413.46:127:34
2513.46:137:34
2613.46:137:35
2713.46:147:35
2813.36:157:35
2913.36:157:36
3013.36:167:36
3113.36:167:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.48 kWh/m².

For context, solar energy here swings from a low near 3.38 kWh/m² to a high of 5.88 kWh/m² in February across the year — December's 5.48 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in December

Hazard calendar for Paraíba do Sul

In seasonPeak

In December, Paraíba do Sul sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Paraíba do Sul's monsoon runs November–March, when most of the year's rain falls.

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

Is December a good time to visit Paraíba do Sul?

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

4.4
Sightseeing
10th-best month of the year
4.6
Beach & pool
12th-best month of the year

December is a reasonable time to visit Paraíba do Sul for sightseeing.

What to pack for Paraíba do Sul in December

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

In December, Paraíba do Sul sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

UV index in Paraíba do Sul 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 Paraíba do Sul peaks around February 9 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 9UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Paraíba do Sul 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 Paraíba do Sul is worst in July — around 38 µg/m³ PM2.5 (poor), about 2.0× the cleanest month (December, 19 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateModerateJul 1237 µg/m³Dec 2319 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb19Moderate
Mar21Moderate
Apr24Moderate
May31Moderate
Jun36Poor
Jul38Poor
Aug32Moderate
Sep37Poor
Oct24Moderate
Nov20Moderate
Dec19Moderate
Location & terrain

Where is Paraíba do Sul?

Paraíba do Sul sits at 22.2°S, 43.3°W, 323 m above sea level, in Brazil. The nearest listed city is Três Rios, 10 km away.

Topography around Paraíba do Sul

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

Within 3 km, the terrain around Paraíba do Sul has significant variations in elevation — a maximum elevation change of 270 m around an average of 341 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 729 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.

The land around Paraíba do Sul is covered by grassland (58%) and trees (29%) within 3 km, grassland (59%) and trees (38%) within 16 km, and trees (48%) and grassland (45%) within 80 km.

3 km
270 m
16 km
729 m
80 km
2,252 m
treesgrasslandartificial surfaceswater
December weather nearby: Três Rios 10 km · Paty do Alferes 33 km · Miguel Pereira 37 km · São José do Vale do Rio Preto 38 km · Petrópolis 40 km · Valença 43 km · Sapucaia 43 km · Teresópolis 43 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 Paraíba do Sul (-22.1585°, -43.2932°, elevation 323 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. 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).