Porto União weather in October

In October, Porto União sees average daytime highs of 23°C and overnight lows near 13°C, with 152 mm of rain across 14.6 wet days and about 12.6 hours of daylight. It is the 7th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 16% 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 13 hours by month's end. Set against the rest of the year, October is Porto União's 12th-clearest and 2nd-windiest month. For the whole year in context, see Porto União's year-round climate.

Daytime high
23°
7th warmest
Overnight low
13°
6th coldest
Rainfall
152 mm
14.6 wet days
Daylight
12 h 36 min
6:50 AM – 7:28 PM
Cloud cover
75%
12th clearest
Wind
9 km/h
2nd windiest
Solar energy
4.58 kWh/m²
Travel score
5.9
out of 10

Porto União is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 24°C by the end.

A typical October day in Porto União reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°C. Set against its neighbours, October runs about 1°C warmer than September and about 2°C cooler than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12212
22212
32212
42213
52213
62213
72313
82313
92313
102313
112313
122313
132313
142313
152313
162314
172314
182314
192414
202414
212414
222414
232414
242414
252414
262414
272414
282414
292414
302414
312414

Porto União weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 17°15819.913.54.9
Feb26° / 17°14618.412.94.9
Mar26° / 16°10014.312.25.9
Apr23° / 14°739.311.46.8
May20° / 10°949.110.76.2
Jun19° / 958.910.46.1
Jul19° / 828.210.56.3
Aug21° / 767.411.16.9
Sep22° / 11°13710.811.86.4
Oct23° / 13°15214.612.65.9
Nov25° / 15°11513.613.36.1
Dec26° / 16°1381713.65.4

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in October, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of October, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
22971
32971
42872
52872
62971
72872
82872
92773
102773
112773
122674
132674
142674
152773
162674
172674
182674
192674
202674
212674
222674
232674
242773
252872
262872
272971
283070
293070
303070
313070

Chance of precipitation in October

Any precipitation

Porto União gets around 152 mm of rain over 14.6 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 48% and peaks near 50% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
145
245
346
446
546
646
746
847
947
1047
1148
1248
1349
1449
1549
1649
1750
1850
1950
2050
2150
2249
2349
2448
2548
2647
2747
2847
2947
3046
3146

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 35% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14237201
24136211
34036231
43936241
53735261
63635282
73534302
83433312
93332332
103232342
113131363
123031363
132930373
142930383
152830393
162731393
172631393
182631403
192531403
202531403
212531404
222531404
232532404
242532394
252532394
262532394
272532394
282531395
292531395
302531395
312530396

Wind in October

Winds average 9 km/h in October.

Across October, daily wind ranges from about 9 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
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 12 min at the start of October to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over October. Sunrise moves from 7:06 AM to 6:38 AM, and sunset from 7:21 PM to 7:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.27:067:21
212.37:057:21
312.37:047:22
412.37:037:22
512.37:027:23
612.47:007:23
712.46:597:24
812.46:587:24
912.56:577:25
1012.56:567:25
1112.56:557:26
1212.56:547:26
1312.66:537:27
1412.66:527:27
1512.66:517:28
1612.66:507:28
1712.76:497:29
1812.76:497:29
1912.76:487:30
2012.76:477:31
2112.86:467:31
2212.86:457:32
2312.86:447:32
2412.86:437:33
2512.96:437:34
2612.96:427:34
2712.96:417:35
2812.96:407:36
2912.96:407:36
3013.06:397:37
3113.06:387:37

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.58 kWh/m².

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 5.68 kWh/m² in December across the year — October's 4.58 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in October

Is October a good time to visit Porto União?

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

5.9
Sightseeing
8th-best month of the year
4.7
Beach & pool
7th-best month of the year

October is a reasonable time to visit Porto União for sightseeing.

What to pack for Porto União in October

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

In October, Porto União sees daytime highs around 23°C and nights near 13°C. Pack rain gear. Worth having: light clothes and sun protection. About 15 days see rain.

rain gearlight clothessun protection

UV index in Porto União in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Porto União peaks around January 20 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 highHighVery highExtremeJan 20UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5High
Jul5Moderate
Aug6High
Sep9Very high
Oct10Extreme
Nov13Extreme
Dec13Extreme

Air quality in Porto União 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 Porto União is worst in September — around 16 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (March, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1515 µg/m³Mar 116 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar6Good
Apr7Good
May7Good
Jun7Good
Jul8Good
Aug11Good
Sep16Moderate
Oct10Good
Nov7Good
Dec6Good
Location & terrain

Where is Porto União?

Porto União sits at 26.2°S, 51.1°W, 783 m above sea level, in Brazil. The nearest listed city is União da Vitória, 1.0 km away.

Topography around Porto União

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

Within 3 km, the terrain around Porto União has significant variations in elevation — a maximum elevation change of 251 m around an average of 761 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 536 m; within 80 km, large variations in elevation — a maximum elevation change of 800 m.

The land around Porto União is covered by artificial surfaces (39%) and trees (37%) within 3 km, trees (74%) within 16 km, and trees (76%) within 80 km.

3 km
251 m
16 km
536 m
80 km
800 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: União da Vitória 1.0 km · Cruz Machado 36 km · Bituruna 48 km · Caçador 60 km · Canoinhas 69 km · Três Barras 77 km · São Mateus do Sul 80 km · Pinhão 84 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 Porto União (-26.2381°, -51.0783°, elevation 783 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).