Venâncio Aires weather in September

In September, Venâncio Aires sees average daytime highs of 22°C and overnight lows near 12°C, with 174 mm of rain across 12.7 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 30% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 24 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is Venâncio Aires's 11th-clearest and 1st-windiest month. For the whole year in context, see Venâncio Aires's year-round climate.

Daytime high
22°
8th warmest
Overnight low
12°
5th coldest
Rainfall
174 mm
12.7 wet days
Daylight
11 h 48 min
7:28 AM – 7:18 PM
Cloud cover
63%
11th clearest
Wind
9 km/h
1st windiest
Solar energy
4.1 kWh/m²
Travel score
6.1
out of 10

Venâncio Aires is human settlement in Brazil.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical September day in Venâncio Aires reaches about 22°C in the afternoon and slips back to 12°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 29°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12211
22211
32211
42211
52212
62212
72212
82212
92212
102212
112212
122212
132212
142212
152212
162212
172212
182212
192212
202212
212212
222212
232212
242212
252212
262212
272212
282212
292212
302213

Venâncio Aires weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 19°20117.313.74.6
Feb29° / 19°1801613.14.7
Mar28° / 18°14714.412.25.7
Apr25° / 15°14211.211.36.6
May21° / 12°12910.410.56.4
Jun19° / 10°13210.210.16.0
Jul19° / 16311.110.36.0
Aug21° / 10°13210.610.96.4
Sep22° / 12°17412.711.86.1
Oct24° / 14°21814.512.76.1
Nov26° / 15°1581313.56.1
Dec28° / 18°18615.213.95.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 59%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24555
34456
44357
54357
64258
74159
84159
94060
104060
114060
123961
134159
144159
154159
164060
174060
184060
194159
204159
214258
224258
234159
244159
254159
264159
273961
283961
293862
303763

Chance of precipitation in September

Any precipitation

Venâncio Aires gets around 174 mm of rain over 12.7 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 42% and peaks near 45% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
137
237
337
438
539
639
740
840
940
1041
1141
1242
1342
1443
1543
1644
1744
1844
1944
2044
2144
2244
2344
2444
2545
2645
2745
2845
2945
3045

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 45% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14927213
24927213
34927223
44826223
54826223
64826223
74826233
84727233
94727233
104727233
114627243
124627243
134527243
144527243
154527253
164427254
174427254
184427244
194427244
204427244
214427245
224427245
234327246
244327246
254227246
264128247
274128248
284028248
293928249
3038282410

Wind in September

Winds average 9 km/h in September, the windiest month of the year.

Across September, 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.

051015151015202530
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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 24 min at the start of September to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over September. Sunrise moves from 7:47 AM to 7:11 AM, and sunset from 7:10 PM to 7:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:477:10
211.47:467:10
311.47:457:11
411.57:447:11
511.57:427:12
611.57:417:12
711.67:407:13
811.67:397:14
911.67:377:14
1011.67:367:15
1111.77:357:15
1211.77:337:16
1311.77:327:16
1411.87:317:17
1511.87:307:17
1611.87:287:18
1711.97:277:18
1811.97:267:19
1911.97:247:19
2011.97:237:20
2112.07:227:21
2212.07:217:21
2312.07:197:22
2412.17:187:22
2512.17:177:23
2612.17:167:23
2712.27:147:24
2812.27:137:24
2912.27:127:25
3012.37:117:26

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.1 kWh/m².

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 6.43 kWh/m² in December across the year — September's 4.1 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.9Moderate
53.9Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.9Moderate
104.0Moderate
114.0Moderate
124.0Moderate
134.0Bright
144.0Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.2Bright
204.2Bright
214.2Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Is September a good time to visit Venâncio Aires?

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

6.1
Sightseeing
4th-best month of the year
4.2
Beach & pool
8th-best month of the year

September is a reasonable time to visit Venâncio Aires for sightseeing.

What to pack for Venâncio Aires in September

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

In September, Venâncio Aires sees daytime highs around 22°C and nights near 12°C. Worth packing: rain gear. About 13 days see rain.

rain gear

UV index in Venâncio Aires in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Venâncio Aires peaks around January 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 16UV 13Jun 20UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Very high
Apr8Very high
May5Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct6High
Nov11Extreme
Dec12Extreme

Air quality in Venâncio Aires in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Venâncio Aires is worst in September — around 15 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (February, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1415 µg/m³Feb 227 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb7Good
Mar7Good
Apr8Good
May8Good
Jun8Good
Jul10Good
Aug12Moderate
Sep15Moderate
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Venâncio Aires?

Venâncio Aires sits at 29.6°S, 52.2°W, 43 m above sea level, in Brazil. The nearest listed city is Estrela, 25 km away.

Topography around Venâncio Aires

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

Within 3 km, the terrain around Venâncio Aires has only modest variations in elevation — a maximum elevation change of 100 m around an average of 45 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 594 m; within 80 km, large variations in elevation — a maximum elevation change of 798 m.

The land around Venâncio Aires is covered by trees (36%), artificial surfaces (34%) and grassland (24%) within 3 km, trees (44%), cropland (33%) and grassland (20%) within 16 km, and trees (59%) and cropland (22%) within 80 km.

3 km
100 m
16 km
594 m
80 km
798 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Estrela 25 km · Santa Cruz do Sul 26 km · Lajeado 27 km · Vera Cruz 32 km · Arroio do Meio 33 km · Taquari 38 km · Teutônia 41 km · Rio Pardo 46 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 Venâncio Aires (-29.6064°, -52.1919°, elevation 43 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).