Paraíba do Sul weather in January

In January, Paraíba do Sul sees average daytime highs of 28°C and overnight lows near 20°C, with 272 mm of rain across 21.6 wet days and about 13.2 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 11% of the time in January, and the air most often feels muggy.

Daylight stretches from about 13 h 18 min at the start of January to 13 hours by month's end. Set against the rest of the year, January is Paraíba do Sul's 10th-clearest and 6th-windiest month. For the whole year in context, see Paraíba do Sul's year-round climate.

Daytime high
28°
2nd warmest
Overnight low
20°
12th coldest
Rainfall
272 mm
21.6 wet days
Daylight
13 h 12 min
6:26 AM – 7:39 PM
Cloud cover
77%
10th clearest
Wind
7 km/h
6th windiest
Solar energy
5.69 kWh/m²
Travel score
4.2
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 January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical January day in Paraíba do Sul reaches about 28°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 24°C and 31°C. Set against its neighbours, January runs about 1°C warmer than December and on par with February.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12820
22820
32820
42820
52820
62820
72820
82820
92820
102820
112820
122820
132820
142820
152820
162820
172820
182820
192820
202820
212820
222820
232820
242920
252920
262920
272920
282920
292920
302920
312920

Paraíba do Sul weather by month

How January compares with the rest of the year at a glance. January is the 2nd-warmest and 2nd-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 75%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12179
22179
32278
42377
52377
62377
72476
82476
92476
102476
112575
122575
132575
142575
152575
162575
172575
182476
192575
202575
212575
222674
232575
242674
252674
262773
272872
282971
292971
303070
313169

Chance of precipitation in January

Any precipitation

Paraíba do Sul gets around 272 mm of rain over 21.6 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 69% and peaks near 75% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
175
274
373
473
572
672
771
870
970
1069
1169
1269
1369
1468
1569
1669
1769
1869
1969
2069
2169
2269
2368
2468
2568
2667
2767
2866
2966
3065
3165

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 85% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
1157312
2157312
3167212
4167212
5167113
6167113
7167113
8167113
9167113
10167113
11167014
12167014
13167014
14167014
15166915
16166915
17166915
18157015
19156916
20156916
21156916
22147016
23147016
24147016
25147016
26137116
27137116
28137116
29137116
30137116
31137116

Wind in January

Winds average 7 km/h in January.

Across January, 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 January

DaylightNight

Daylight runs from about 13 h 18 min at the start of January to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over January. Sunrise moves from 6:16 AM to 6:36 AM, and sunset from 7:36 PM to 7:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:167:36
213.36:177:37
313.36:187:37
413.36:187:37
513.36:197:37
613.36:197:38
713.36:207:38
813.36:217:38
913.36:217:38
1013.36:227:38
1113.36:237:39
1213.36:237:39
1313.26:247:39
1413.26:257:39
1513.26:257:39
1613.26:267:39
1713.26:277:39
1813.26:277:39
1913.26:287:39
2013.26:297:39
2113.26:297:39
2213.16:307:39
2313.16:317:39
2413.16:317:39
2513.16:327:38
2613.16:337:38
2713.16:337:38
2813.16:347:38
2913.16:357:38
3013.06:357:37
3113.06:367:37

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.69 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 — January's 5.69 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.9Bright
315.9Bright
Planning a trip in January

Hazard calendar for Paraíba do Sul

In seasonPeak

In January, 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 January a good time to visit Paraíba do Sul?

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

4.2
Sightseeing
12th-best month of the year
5.0
Beach & pool
10th-best month of the year

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

What to pack for Paraíba do Sul in January

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

In January, Paraíba do Sul sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Paraíba do Sul in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 15 (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 January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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
January 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).