Cerro Azul weather in October

In October, Cerro Azul sees average daytime highs of 25°C and overnight lows near 15°C, with 120 mm of rain across 14 wet days and about 12.6 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 26°C by the end. The sky is clear or mostly clear about 15% of the time in October, and the air most often feels humid.

Daylight stretches from about 12 h 12 min at the start of October to 12 h 54 min by month's end. Set against the rest of the year, October is Cerro Azul's 12th-clearest and 1st-windiest month. For the whole year in context, see Cerro Azul's year-round climate.

Daytime high
25°
7th warmest
Overnight low
15°
6th coldest
Rainfall
120 mm
14 wet days
Daylight
12 h 36 min
6:44 AM – 7:20 PM
Cloud cover
75%
12th clearest
Wind
7 km/h
1st windiest
Solar energy
4.82 kWh/m²
Travel score
5.9
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 26°C by the end.

A typical October day in Cerro Azul reaches about 25°C in the afternoon and slips back to 15°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 31°C. Set against its neighbours, October runs about 1°C warmer than September and about 1°C cooler than November.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12414
22414
32414
42415
52415
62515
72515
82515
92515
102515
112515
122515
132515
142515
152515
162515
172515
182516
192516
202516
212616
222616
232616
242616
252616
262616
272616
282616
292616
302616
312616

Cerro Azul weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 5th-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 October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in October, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 10% of October, with mostly cloudy or overcast conditions the remaining 75%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32872
42872
52872
62971
72773
82773
92773
102773
112575
122674
132575
142476
152476
162377
172278
182278
192278
202377
212377
222377
232377
242476
252476
262476
272575
282575
292674
302773
312773

Chance of precipitation in October

Any precipitation

Cerro Azul gets around 120 mm of rain over 14 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 45% and peaks near 48% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
143
243
343
443
543
643
743
843
943
1043
1144
1244
1344
1444
1545
1645
1745
1846
1946
2047
2147
2247
2348
2448
2548
2648
2748
2848
2948
3048
3148

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the humid band about 43% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12335376
22234377
32133388
42033389
520323910
619314011
718304012
817294113
917294114
1016284114
1116274115
1215274216
1315274217
1414264217
1514264318
1613254318
1713254418
1812254419
1912254519
2011254519
2111244519
2211244619
2311244619
2412244618
2512244619
2612244519
2712244519
2812244519
2912234520
3012234420
3112234421

Wind in October

Winds average 7 km/h in October, the windiest month of the year.

Across October, 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 October

DaylightNight

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

Days grow by about 42 minutes over October. Sunrise moves from 6:59 AM to 6:33 AM, and sunset from 7:13 PM to 7:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:597:13
212.36:587:13
312.36:577:14
412.36:567:14
512.36:557:15
612.46:547:15
712.46:537:16
812.46:527:16
912.46:517:16
1012.46:507:17
1112.56:497:17
1212.56:487:18
1312.56:477:18
1412.56:467:19
1512.66:457:19
1612.66:447:20
1712.66:437:20
1812.66:437:21
1912.76:427:21
2012.76:417:22
2112.76:407:23
2212.76:397:23
2312.86:387:24
2412.86:387:24
2512.86:377:25
2612.86:367:25
2712.86:357:26
2812.96:357:27
2912.96:347:27
3012.96:337:28
3112.96:337:28

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.82 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 — October's 4.82 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.6Bright
64.6Bright
74.6Bright
84.7Bright
94.7Bright
104.7Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.1Bright
Planning a trip in October

Is October a good time to visit Cerro Azul?

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

5.9
Sightseeing
7th-best month of the year
5.4
Beach & pool
6th-best month of the year

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

What to pack for Cerro Azul in October

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

In October, Cerro Azul sees daytime highs around 25°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 14 days see rain.

rain gearlight clothessun protection

UV index in Cerro Azul in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 11 (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 October

GoodModeratePoorUnhealthyVery unhealthy

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