Porteirinha weather in January

In January, Porteirinha sees average daytime highs of 31°C and overnight lows near 21°C, with 98 mm of rain across 11 wet days and about 12.8 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 25% of the time in January, and the air most often feels muggy.

Daylight stretches from about 12 h 54 min at the start of January to 12 h 42 min by month's end. Set against the rest of the year, January is Porteirinha's 10th-clearest and 11th-windiest month. For the whole year in context, see Porteirinha's year-round climate.

Daytime high
31°
5th warmest
Overnight low
21°
11th coldest
Rainfall
98 mm
11 wet days
Daylight
12 h 48 min
6:36 AM – 7:27 PM
Cloud cover
66%
10th clearest
Wind
8 km/h
11th windiest
Solar energy
6.25 kWh/m²
Travel score
4.5
out of 10

Porteirinha is 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 31°C through the month.

A typical January day in Porteirinha reaches about 31°C in the afternoon and slips back to 21°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 34°C. Set against its neighbours, January runs on par with December and on par with February.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13021
23021
33021
43021
53021
63021
73021
83021
93021
103021
113021
123021
133021
143021
153021
163021
173021
183121
193121
203121
213121
223121
233121
243121
253121
263121
273121
283121
293121
303121
313121

How January really feels in Porteirinha

Once humidity and wind are folded in, January averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Porteirinha weather by month

How January compares with the rest of the year at a glance. January is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°981112.84.5
Feb31° / 21°678.212.54.5
Mar31° / 21°821012.14.6
Apr30° / 20°314.811.75.5
May29° / 18°61.611.36.5
Jun28° / 17°10.211.17.4
Jul28° / 16°00.111.27.7
Aug30° / 16°10.211.56.8
Sep32° / 18°71.411.95.3
Oct32° / 20°435.912.44.3
Nov30° / 21°11812.612.74.3
Dec30° / 21°12613.412.94.5

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
34060
44060
54060
64060
74060
84060
94060
104060
114159
124159
134258
144159
154159
164159
174060
184060
194060
204060
213961
223961
234060
244060
254060
264060
274159
284159
294159
304159
314258

Chance of precipitation in January

Any precipitation

Porteirinha gets around 98 mm of rain over 11 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 36% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
438
537
637
737
837
936
1036
1136
1236
1336
1436
1536
1636
1736
1837
1937
2037
2137
2236
2336
2435
2534
2634
2733
2833
2933
3032
3132

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 45% of days. Sticky, muggy-or-worse air turns up on roughly 48% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
10943443
20943443
31943453
41942454
51942454
61942454
71942444
811041444
911041444
1011041444
1111140444
1211140444
1311139454
1411239454
1511238454
1611337464
1711336464
1811436464
1911435474
2011435474
2111534464
2211535463
2301536463
2401536453
2501537453
2601538443
2701539433
2801539433
2901440423
3001441423
3101442413

Wind in January

Winds average 8 km/h in January.

Across January, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 54 min at the start of January to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over January. Sunrise moves from 6:28 AM to 6:44 AM, and sunset from 7:23 PM to 7:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:287:23
212.96:287:23
312.96:297:24
412.96:297:24
512.96:307:24
612.96:307:25
712.96:317:25
812.96:327:25
912.96:327:25
1012.96:337:26
1112.96:337:26
1212.96:347:26
1312.96:347:26
1412.96:357:26
1512.86:367:27
1612.86:367:27
1712.86:377:27
1812.86:377:27
1912.86:387:27
2012.86:387:27
2112.86:397:27
2212.86:407:27
2312.86:407:27
2412.86:417:27
2512.86:417:27
2612.86:427:27
2712.76:427:27
2812.76:437:27
2912.76:437:27
3012.76:447:27
3112.76:447:27

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.25 kWh/m².

For context, solar energy here swings from a low near 4.42 kWh/m² to a high of 6.37 kWh/m² in October across the year — January's 6.25 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.3Intense
76.3Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in January

Hazard calendar for Porteirinha

In seasonPeak

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

Porteirinha'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 January a good time to visit Porteirinha?

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

4.5
Sightseeing
8th-best month of the year
6.4
Beach & pool
10th-best month of the year

January is a reasonable time to visit Porteirinha for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Porteirinha in January

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

In January, Porteirinha sees daytime highs around 31°C and nights near 21°C. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Porteirinha in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Porteirinha peaks around February 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 16UV 15Jul 11UV 8
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Porteirinha?

Porteirinha sits at 15.7°S, 43.0°W, 570 m above sea level, in Brazil. The nearest listed city is Janaúba, 31 km away.

Topography around Porteirinha

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

Within 3 km, the terrain around Porteirinha has significant variations in elevation — a maximum elevation change of 270 m around an average of 614 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 756 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,324 m.

The land around Porteirinha is covered by grassland (38%) and trees (30%) within 3 km, grassland (48%) and trees (29%) within 16 km, and trees (42%), grassland (27%) and shrubs (22%) within 80 km.

3 km
270 m
16 km
756 m
80 km
1,324 m
treesshrubsgrasslandcroplandartificial surfaces
January weather nearby: Janaúba 31 km · Rio Pardo de Minas 54 km · Barreiro do Jaíba 62 km · Monte Azul 67 km · Jaíba 83 km · Taiobeiras 85 km · Salinas 92 km · Espinosa 94 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 Porteirinha (-15.7433°, -43.0283°, elevation 570 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).