Portão weather in October

In October, Portão sees average daytime highs of 24°C and overnight lows near 15°C, with 194 mm of rain across 13.8 wet days and about 12.7 hours of daylight. It is the 7th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 25°C by the end. The sky is clear or mostly clear about 25% of the time in October, and the air most often feels humid.

Daylight stretches from about 12 h 18 min at the start of October to 13 h 06 min by month's end. Set against the rest of the year, October is Portão's 12th-clearest and 1st-windiest month. For the whole year in context, see Portão's year-round climate.

Daytime high
24°
7th warmest
Overnight low
15°
6th coldest
Rainfall
194 mm
13.8 wet days
Daylight
12 h 42 min
6:48 AM – 7:32 PM
Cloud cover
68%
12th clearest
Wind
10 km/h
1st windiest
Solar energy
4.85 kWh/m²
Travel score
6.2
out of 10

Portão 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 23°C in the first days to 25°C by the end.

A typical October day in Portão reaches about 24°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 30°C. Set against its neighbours, October runs about 2°C warmer than September and about 2°C cooler than November.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12314
22314
32314
42314
52314
62414
72414
82414
92414
102415
112415
122415
132415
142415
152415
162515
172515
182515
192515
202515
212515
222515
232515
242515
252515
262515
272516
282516
292516
302516
312516

Portão weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°16514.813.74.6
Feb29° / 20°14113.913.14.7
Mar28° / 19°12812.912.25.7
Apr25° / 16°1181011.36.8
May22° / 13°1209.910.56.6
Jun20° / 11°12410.210.16.1
Jul19° / 10°15510.510.36.1
Aug21° / 11°13010.510.96.5
Sep22° / 13°1601211.86.3
Oct24° / 15°19413.812.76.2
Nov27° / 17°13912.113.56.2
Dec29° / 19°14513.113.95.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in October, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of October, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23565
33466
43466
53466
63466
73367
83367
93367
103367
113466
123565
133664
143664
153664
163763
173763
183763
193763
203862
213862
223862
233961
243862
253862
263862
273961
284060
294060
303961
314060

Chance of precipitation in October

Any precipitation

Portão gets around 194 mm of rain over 13.8 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 44% and peaks near 45% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
143
243
344
444
544
645
745
845
945
1045
1145
1245
1345
1445
1545
1645
1745
1845
1945
2045
2144
2244
2344
2443
2543
2643
2743
2842
2942
3042
3142

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 22% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1342727110
2332727120
3322728130
4312728140
5292728150
6282728160
7272729171
8252729181
9242829191
10232829191
11222829201
12212829211
13202929211
14192930211
15182930221
16172931221
17162931231
18162931231
19162931231
20152931241
21152931241
22162830251
23162830251
24162829252
25162829252
26162829252
27162729252
28162729253
29162729253
30162629253
31162629253

Wind in October

Winds average 10 km/h in October, the windiest month of the year.

Across October, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 18 min at the start of October to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over October. Sunrise moves from 7:05 AM to 6:34 AM, and sunset from 7:22 PM to 7:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.37:057:22
212.37:047:23
312.37:037:24
412.47:027:24
512.47:017:25
612.46:597:25
712.56:587:26
812.56:577:27
912.56:567:27
1012.66:557:28
1112.66:547:29
1212.66:527:29
1312.66:517:30
1412.76:507:31
1512.76:497:31
1612.76:487:32
1712.86:477:33
1812.86:467:33
1912.86:457:34
2012.86:447:35
2112.96:437:35
2212.96:427:36
2312.96:417:37
2413.06:407:38
2513.06:397:38
2613.06:387:39
2713.06:377:40
2813.16:377:41
2913.16:367:41
3013.16:357:42
3113.16:347:43

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.85 kWh/m².

For context, solar energy here swings from a low near 2.39 kWh/m² to a high of 6.47 kWh/m² in December across the year — October's 4.85 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.6Bright
84.6Bright
94.6Bright
104.7Bright
114.7Bright
124.7Bright
134.8Bright
144.8Bright
154.8Bright
164.9Bright
174.9Bright
184.9Bright
195.0Bright
205.0Bright
215.1Bright
225.1Bright
235.1Bright
245.2Bright
255.2Bright
265.3Bright
275.3Bright
285.3Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in October

Is October a good time to visit Portão?

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

6.2
Sightseeing
5th-best month of the year
5.4
Beach & pool
7th-best month of the year

October is a reasonable time to visit Portão for sightseeing.

What to pack for Portão in October

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

In October, Portão sees daytime highs around 24°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

UV index in Portão in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Portão peaks around January 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 16UV 13Jun 20UV 4
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Very high
Apr8Very high
May5Moderate
Jun4Moderate
Jul4Moderate
Aug5High
Sep8Very high
Oct8Very high
Nov12Extreme
Dec13Extreme

Air quality in Portão 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 Portão is worst in August — around 27 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateAug 1327 µg/m³Dec 2213 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar15Moderate
Apr18Moderate
May21Moderate
Jun23Moderate
Jul25Moderate
Aug27Moderate
Sep23Moderate
Oct16Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Portão?

Portão sits at 29.7°S, 51.2°W, 49 m above sea level, in Brazil. The nearest listed city is Estância Velha, 9.0 km away.

Topography around Portão

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

Within 3 km, the terrain around Portão has only modest variations in elevation — a maximum elevation change of 120 m around an average of 47 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 449 m; within 80 km, large variations in elevation — a maximum elevation change of 986 m.

The land around Portão is covered by trees (42%) and grassland (34%) within 3 km, trees (52%) and grassland (25%) within 16 km, and trees (57%) and grassland (22%) within 80 km.

3 km
120 m
16 km
449 m
80 km
986 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
October weather nearby: Estância Velha 9.0 km · Novo Hamburgo 11 km · São Leopoldo 11 km · Ivoti 15 km · Sapucaia do Sul 16 km · Nova Santa Rita 17 km · São Sebastião do Caí 18 km · Campo Bom 18 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 Portão (-29.7017°, -51.2419°, elevation 49 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).