Herval dOeste weather in September

In September, Herval dOeste sees average daytime highs of 23°C and overnight lows near 12°C, with 172 mm of rain across 12.1 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 38% 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 12 min by month's end. Set against the rest of the year, September is Herval dOeste's 4th-clearest and 1st-windiest month. For the whole year in context, see Herval dOeste's year-round climate.

Daytime high
23°
8th warmest
Overnight low
12°
5th coldest
Rainfall
172 mm
12.1 wet days
Daylight
11 h 48 min
7:25 AM – 7:16 PM
Cloud cover
56%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
4.6 kWh/m²
Travel score
6.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical September day in Herval dOeste reaches about 23°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 17°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)
12311
22311
32312
42312
52312
62312
72312
82312
92312
102312
112312
122312
132312
142312
152212
162212
172212
182212
192212
202212
212212
222212
232212
242213
252213
262313
272313
282313
292313
302313

Herval dOeste weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 18°17818.113.55.2
Feb27° / 18°16917.1135.2
Mar27° / 17°12814.412.26.0
Apr24° / 14°10410.611.46.8
May20° / 11°13910.410.76.3
Jun19° / 10°13310.110.36.1
Jul19° / 11810.110.56.3
Aug21° / 10°1029.5116.9
Sep23° / 12°17212.111.86.5
Oct24° / 14°20115.412.76.0
Nov26° / 15°15113.413.36.1
Dec27° / 17°17016.113.75.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15941
25941
35842
45842
55644
65545
75545
85446
95248
105248
115149
125149
135050
144951
154951
164951
174753
184753
194753
204654
214555
224555
234555
244456
254456
264357
274258
284258
294159
304060

Chance of precipitation in September

Any precipitation

Herval dOeste gets around 172 mm of rain over 12.1 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 40% and peaks near 47% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
132
232
332
433
534
634
735
836
937
1037
1138
1239
1339
1440
1540
1641
1741
1842
1942
2043
2143
2244
2344
2445
2545
2646
2746
2846
2947
3047

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 54% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1623440
2613450
3603550
4593560
5583660
6583660
7573670
8573670
9563680
10563680
11553690
12553690
135336101
145435101
155335111
165235121
175334121
185234131
195234131
205333131
215233141
225133151
235133151
245133160
255033170
264933180
274833190
284733200
294633210
304532220

Wind in September

Winds average 11 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

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

Days grow by about 48 minutes over September. Sunrise moves from 7:43 AM to 7:08 AM, and sunset from 7:09 PM to 7:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:437:09
211.57:427:09
311.57:407:10
411.57:397:10
511.57:387:11
611.67:377:11
711.67:367:11
811.67:357:12
911.67:337:12
1011.77:327:13
1111.77:317:13
1211.77:307:14
1311.87:297:14
1411.87:277:15
1511.87:267:15
1611.87:257:16
1711.97:247:16
1811.97:237:16
1911.97:217:17
2012.07:207:17
2112.07:197:18
2212.07:187:18
2312.07:177:19
2412.17:157:19
2512.17:147:20
2612.17:137:20
2712.17:127:21
2812.27:117:21
2912.27:107:22
3012.27:087:22

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.6 kWh/m².

For context, solar energy here swings from a low near 2.78 kWh/m² to a high of 6.36 kWh/m² in December across the year — September's 4.6 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Is September a good time to visit Herval dOeste?

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

6.5
Sightseeing
3rd-best month of the year
4.8
Beach & pool
8th-best month of the year

September is a reasonable time to visit Herval dOeste for sightseeing.

What to pack for Herval dOeste in September

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

In September, Herval dOeste sees daytime highs around 23°C and nights near 12°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Herval dOeste 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 Herval dOeste peaks around January 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 22UV 14Jul 11UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5Moderate
Jul5Moderate
Aug6High
Sep8Very high
Oct9Very high
Nov12Extreme
Dec13Extreme

Air quality in Herval dOeste 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 Herval dOeste is worst in September — around 16 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (March, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1215 µg/m³Mar 126 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar6Good
Apr7Good
May7Good
Jun7Good
Jul8Good
Aug14Moderate
Sep16Moderate
Oct10Good
Nov7Good
Dec6Good
Location & terrain

Where is Herval dOeste?

Herval dOeste sits at 27.2°S, 51.5°W, 543 m above sea level, in Brazil. The nearest listed city is Joaçaba, 2.0 km away.

Topography around Herval dOeste

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

Within 3 km, the terrain around Herval dOeste has significant variations in elevation — a maximum elevation change of 339 m around an average of 635 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 717 m; within 80 km, large variations in elevation — a maximum elevation change of 1,061 m.

The land around Herval dOeste is covered by trees (62%) within 3 km, trees (66%) and grassland (21%) within 16 km, and trees (65%) and cropland (20%) within 80 km.

3 km
339 m
16 km
717 m
80 km
1,061 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Joaçaba 2.0 km · Capinzal 20 km · Campos Novos 35 km · Videira 40 km · Concórdia 53 km · Fraiburgo 60 km · Caçador 67 km · Seara 81 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 Herval dOeste (-27.1936°, -51.4947°, elevation 543 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).