Altônia weather in January

In January, Altônia sees average daytime highs of 31°C and overnight lows near 23°C, with 144 mm of rain across 16.6 wet days and about 13.3 hours of daylight. It is the 1st-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 28% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 13 h 30 min at the start of January to 13 h 06 min by month's end. Set against the rest of the year, January is Altônia's 11th-clearest and 10th-windiest month. For the whole year in context, see Altônia's year-round climate.

Daytime high
31°
1st warmest
Overnight low
23°
12th coldest
Rainfall
144 mm
16.6 wet days
Daylight
13 h 18 min
7:05 AM – 8:25 PM
Cloud cover
62%
11th clearest
Wind
8 km/h
10th windiest
Solar energy
6.13 kWh/m²
Travel score
3.9
out of 10

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 Altônia reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°C. Set against its neighbours, January runs on par with December and on par with February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123
313123

How January really feels in Altônia

Once humidity and wind are folded in, January averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Altônia weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°14416.613.33.9
Feb31° / 23°14314.612.84.0
Mar30° / 22°10712.712.24.7
Apr28° / 20°917.711.56.4
May24° / 17°1258.810.97.2
Jun23° / 16°1078.110.67.4
Jul23° / 15°846.910.77.6
Aug25° / 16°826.211.27.8
Sep27° / 18°1158.511.96.9
Oct29° / 20°16012.112.65.4
Nov30° / 21°13711.713.25.0
Dec30° / 23°1541513.44.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 17% of January, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34357
44258
54258
64258
74258
84357
94357
104357
114357
124456
134456
144456
154456
164456
174456
184555
194654
204654
214654
224753
234753
244852
254852
264852
274951
285050
295050
305050
315050

Chance of precipitation in January

Any precipitation

Altônia gets around 144 mm of rain over 16.6 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 53% and peaks near 54% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
153
253
353
454
554
654
754
854
954
1053
1153
1253
1353
1453
1553
1653
1753
1853
1953
2053
2153
2254
2354
2454
2553
2653
2753
2853
2953
3052
3152

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 72% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11323703
21322713
31322713
41322713
51322704
61321714
71322704
80322714
90322714
100322714
110322714
120321733
130321733
140321733
150221743
160222733
170222733
180222733
190222733
200222733
210223723
220323713
230322723
240322723
250322723
260322723
270322723
280322723
290322732
300322732
310322732

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 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
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 13 h 30 min at the start of January to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over January. Sunrise moves from 6:55 AM to 7:16 AM, and sunset from 8:22 PM to 8:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.56:558:22
213.46:568:23
313.46:568:23
413.46:578:23
513.46:588:23
613.46:588:24
713.46:598:24
813.47:008:24
913.47:008:24
1013.47:018:24
1113.47:028:24
1213.47:028:24
1313.47:038:25
1413.37:048:25
1513.37:048:25
1613.37:058:25
1713.37:068:25
1813.37:078:25
1913.37:078:25
2013.37:088:24
2113.37:098:24
2213.27:098:24
2313.27:108:24
2413.27:118:24
2513.27:118:24
2613.27:128:24
2713.27:138:23
2813.27:148:23
2913.17:148:23
3013.17:158:23
3113.17:168:22

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.13 kWh/m².

For context, solar energy here swings from a low near 3.12 kWh/m² to a high of 6.28 kWh/m² in December across the year — January's 6.13 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in January

Is January a good time to visit Altônia?

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

3.9
Sightseeing
12th-best month of the year
5.7
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Altônia.

What to pack for Altônia in January

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

In January, Altônia sees daytime highs around 31°C and nights near 23°C. Pack light clothes, rain gear and sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Altônia 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 Altônia peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeJan 19UV 15Sep 14UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5High
Jul5High
Aug7Very high
Sep4Moderate
Oct11Extreme
Nov12Extreme
Dec14Extreme

Air quality in Altônia 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 Altônia is worst in September — around 26 µg/m³ PM2.5 (moderate), about 4.7× the cleanest month (March, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1525 µg/m³Mar 166 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb7Good
Mar6Good
Apr7Good
May8Good
Jun8Good
Jul7Good
Aug17Moderate
Sep26Moderate
Oct13Moderate
Nov9Good
Dec7Good
Location & terrain

Where is Altônia?

Altônia sits at 23.9°S, 53.9°W, 353 m above sea level, in Brazil. The nearest listed city is Iporã, 25 km away.

Topography around Altônia

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

Within 3 km, the terrain around Altônia has only modest variations in elevation — a maximum elevation change of 114 m around an average of 353 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 216 m; within 80 km, significant variations in elevation — a maximum elevation change of 297 m.

The land around Altônia is covered by grassland (36%) and cropland (36%) within 3 km, cropland (40%) and grassland (38%) within 16 km, and cropland (58%) and grassland (22%) within 80 km.

3 km
114 m
16 km
216 m
80 km
297 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Iporã 25 km · Terra Roxa 37 km · Guaíra 42 km · Palotina 46 km · Itaquiraí 53 km · Umuarama 60 km · Assis Chateaubriand 72 km · Marechal Cândido Rondon 77 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 Altônia (-23.8744°, -53.9017°, elevation 353 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).