São José do Vale do Rio Preto weather in January

In January, São José do Vale do Rio Preto sees average daytime highs of 27°C and overnight lows near 19°C, with 303 mm of rain across 21.9 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 27°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 São José do Vale do Rio Preto's 10th-clearest and 5th-windiest month. For the whole year in context, see São José do Vale do Rio Preto's year-round climate.

Daytime high
27°
2nd warmest
Overnight low
19°
12th coldest
Rainfall
303 mm
21.9 wet days
Daylight
13 h 12 min
6:24 AM – 7:38 PM
Cloud cover
78%
10th clearest
Wind
6 km/h
5th windiest
Solar energy
5.7 kWh/m²
Travel score
4.5
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

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

A typical January day in São José do Vale do Rio Preto reaches about 27°C in the afternoon and slips back to 19°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 30°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)
12719
22719
32719
42719
52719
62719
72719
82719
92719
102719
112719
122719
132719
142719
152719
162719
172719
182719
192719
202719
212719
222719
232819
242819
252819
262819
272819
282819
292819
302819
312819

São José do Vale do Rio Preto 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
Jan27° / 19°30321.913.24.5
Feb28° / 19°2041712.85.0
Mar27° / 19°2162112.24.8
Apr25° / 17°10114.411.56.0
May23° / 15°6611.4116.6
Jun22° / 13°366.510.77.3
Jul22° / 13°366.710.87.4
Aug23° / 13°407.211.27.4
Sep24° / 15°9311.711.96.7
Oct25° / 17°14516.312.55.7
Nov25° / 18°25121.313.14.7
Dec26° / 19°31623.713.34.4

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
42278
52179
62278
72377
82377
92476
102476
112575
122674
132674
142674
152674
162674
172575
182575
192674
202575
212476
222575
232575
242575
252674
262674
272773
282674
292872
302872
312872

Chance of precipitation in January

Any precipitation

São José do Vale do Rio Preto gets around 303 mm of rain over 21.9 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 70% and peaks near 77% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
177
276
375
474
573
672
771
871
970
1069
1169
1268
1368
1468
1568
1669
1769
1869
1970
2070
2170
2270
2370
2470
2569
2669
2768
2868
2968
3067
3166

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 71% of days. Sticky, muggy-or-worse air turns up on roughly 75% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1124714
2124714
3124714
4125704
5125704
6026704
7026704
8026713
9027703
10027703
11027703
12027703
13027703
14027703
15027694
16026704
17026704
18026704
19025714
20025714
21025714
22024724
23024715
24024715
25024715
26023725
27023725
28023725
29023725
30023725
31023725

Wind in January

Winds average 6 km/h in January.

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

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 6:15 AM to 6:34 AM, and sunset from 7:35 PM to 7:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:157:35
213.36:157:35
313.36:167:35
413.36:177:36
513.36:177:36
613.36:187:36
713.36:197:36
813.36:197:37
913.36:207:37
1013.36:207:37
1113.36:217:37
1213.36:227:37
1313.26:227:37
1413.26:237:37
1513.26:247:37
1613.26:247:38
1713.26:257:38
1813.26:267:38
1913.26:267:38
2013.26:277:37
2113.26:287:37
2213.16:287:37
2313.16:297:37
2413.16:307:37
2513.16:307:37
2613.16:317:37
2713.16:327:37
2813.16:327:36
2913.16:337:36
3013.06:347:36
3113.06:347:36

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.7 kWh/m².

For context, solar energy here swings from a low near 3.42 kWh/m² to a high of 5.91 kWh/m² in February across the year — January's 5.7 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
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in January

Hazard calendar for São José do Vale do Rio Preto

In seasonPeak

In January, São José do Vale do Rio Preto sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

São José do Vale do Rio Preto's rainy season runs October–March, when most of the year's rain falls.

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

Is January a good time to visit São José do Vale do Rio Preto?

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

4.5
Sightseeing
11th-best month of the year
4.8
Beach & pool
10th-best month of the year

January is a reasonable time to visit São José do Vale do Rio Preto for sightseeing.

What to pack for São José do Vale do Rio Preto in January

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

In January, São José do Vale do Rio Preto sees daytime highs around 27°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in São José do Vale do Rio Preto 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 São José do Vale do Rio Preto peaks around January 24 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 highExtremeJan 24UV 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 São José do Vale do Rio Preto 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 São José do Vale do Rio Preto is worst in September — around 19 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (March, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1518 µg/m³Mar 1110 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar10Good
Apr12Good
May15Moderate
Jun16Moderate
Jul15Moderate
Aug15Moderate
Sep19Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is São José do Vale do Rio Preto?

São José do Vale do Rio Preto sits at 22.2°S, 42.9°W, 582 m above sea level, in Brazil. The nearest listed city is Sapucaia, 17 km away.

Topography around São José do Vale do Rio Preto

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São José do Vale do Rio Preto.

Within 3 km, the terrain around São José do Vale do Rio Preto has significant variations in elevation — a maximum elevation change of 514 m around an average of 705 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,467 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,224 m.

The land around São José do Vale do Rio Preto is covered by trees (68%) and grassland (28%) within 3 km, trees (62%) and grassland (36%) within 16 km, and trees (51%) and grassland (44%) within 80 km.

3 km
514 m
16 km
1,467 m
80 km
2,224 m
treesgrasslandartificial surfaceswater
January weather nearby: Sapucaia 17 km · Sumidouro 28 km · Três Rios 30 km · Teresópolis 30 km · São Pedro 30 km · Além Paraíba 37 km · Paraíba do Sul 38 km · Carmo 41 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 São José do Vale do Rio Preto (-22.1521°, -42.9233°, elevation 582 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).