Cerro Azul weather in January

In January, Cerro Azul sees average daytime highs of 28°C and overnight lows near 19°C, with 218 mm of rain across 22.1 wet days and about 13.4 hours of daylight. It is the 1st-warmest and 1st-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 9% of the time in January, and the air most often feels muggy.

Daylight stretches from about 13 h 30 min at the start of January to 13 h 12 min by month's end. Set against the rest of the year, January is Cerro Azul's 11th-clearest and 5th-windiest month. For the whole year in context, see Cerro Azul's year-round climate.

Daytime high
28°
1st warmest
Overnight low
19°
12th coldest
Rainfall
218 mm
22.1 wet days
Daylight
13 h 24 min
6:45 AM – 8:08 PM
Cloud cover
75%
11th clearest
Wind
6 km/h
5th windiest
Solar energy
5.34 kWh/m²
Travel score
4.2
out of 10

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 Cerro Azul reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 32°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)
12819
22819
32819
42819
52819
62819
72819
82819
92819
102819
112819
122819
132819
142819
152819
162819
172819
182819
192819
202819
212819
222819
232819
242819
252819
262819
272819
282819
292819
302819
312819

Cerro Azul weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°21822.113.44.2
Feb28° / 19°16819.312.94.4
Mar27° / 18°13317.712.25.3
Apr26° / 16°649.211.46.7
May22° / 13°798.510.86.9
Jun21° / 11°787.810.56.9
Jul21° / 10°717.210.67.0
Aug23° / 11°576.811.17.4
Sep24° / 13°10910.211.86.8
Oct25° / 15°1201412.65.9
Nov26° / 16°11915.213.25.6
Dec28° / 18°15518.213.54.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 74%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22773
32674
42674
52773
62674
72674
82674
92674
102674
112773
122773
132773
142674
152674
162674
172575
182476
192476
202476
212377
222377
232476
242476
252476
262575
272674
282674
292674
302674
312872

Chance of precipitation in January

Any precipitation

Cerro Azul gets around 218 mm of rain over 22.1 wet days in January, the wettest month. 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 71% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
167
267
368
469
569
670
771
871
971
1071
1171
1270
1370
1470
1570
1670
1770
1870
1971
2071
2171
2271
2371
2471
2571
2671
2771
2871
2971
3070
3170

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 62% of days. Sticky, muggy-or-worse air turns up on roughly 74% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
16265513
25265613
35255713
45255713
54245913
64245913
74236013
84236013
94226113
103226213
113226213
123226312
133226312
144216312
154216312
164216411
174216411
184216411
194216411
205216311
215216311
225206411
235206411
245206411
255206411
265206411
274206511
284206511
294206412
304206412
314206412

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 30 min at the start of January to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over January. Sunrise moves from 6:35 AM to 6:56 AM, and sunset from 8:06 PM to 8:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.56:358:06
213.56:358:06
313.56:368:06
413.56:378:07
513.56:378:07
613.56:388:07
713.56:398:07
813.56:398:07
913.56:408:07
1013.56:418:08
1113.46:418:08
1213.46:428:08
1313.46:438:08
1413.46:438:08
1513.46:448:08
1613.46:458:08
1713.46:458:08
1813.46:468:08
1913.36:478:08
2013.36:488:08
2113.36:488:08
2213.36:498:07
2313.36:508:07
2413.36:518:07
2513.36:518:07
2613.26:528:07
2713.26:538:06
2813.26:538:06
2913.26:548:06
3013.26:558:05
3113.26:568:05

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.34 kWh/m².

For context, solar energy here swings from a low near 2.92 kWh/m² to a high of 5.65 kWh/m² in December across the year — January's 5.34 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in January

Is January a good time to visit Cerro Azul?

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
4.9
Beach & pool
10th-best month of the year

January is a reasonable time to visit Cerro Azul for sightseeing.

What to pack for Cerro Azul in January

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

In January, Cerro Azul sees daytime highs around 28°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 Cerro Azul 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 Cerro Azul peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeJan 19UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug7High
Sep7High
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Cerro Azul 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 Cerro Azul is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (March, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1216 µg/m³Mar 108 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr9Good
May10Good
Jun10Good
Jul11Good
Aug15Moderate
Sep17Moderate
Oct11Good
Nov9Good
Dec8Good
Location & terrain

Where is Cerro Azul?

Cerro Azul sits at 24.8°S, 49.3°W, 317 m above sea level, in Brazil. The nearest listed city is Rio Branco do Sul, 41 km away.

Topography around Cerro Azul

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

Within 3 km, the terrain around Cerro Azul has significant variations in elevation — a maximum elevation change of 320 m around an average of 398 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,029 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,785 m.

The land around Cerro Azul is covered by trees (56%) and grassland (39%) within 3 km, trees (73%) and grassland (26%) within 16 km, and trees (80%) within 80 km.

3 km
320 m
16 km
1,029 m
80 km
1,785 m
treesgrasslandcroplandartificial surfaces
January weather nearby: Rio Branco do Sul 41 km · Itaperuçu 45 km · Colombo 52 km · Apiaí 55 km · Almirante Tamandaré 56 km · Campina Grande do Sul 57 km · Quatro Barras 63 km · Campo Magro 64 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 Cerro Azul (-24.8236°, -49.2611°, elevation 317 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).