Eldorado do Sul weather in September

In September, Eldorado do Sul sees average daytime highs of 22°C and overnight lows near 13°C, with 145 mm of rain across 11.1 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 2nd-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 Eldorado do Sul's 10th-clearest and 2nd-windiest month. For the whole year in context, see Eldorado do Sul's year-round climate.

Daytime high
22°
8th warmest
Overnight low
13°
4th coldest
Rainfall
145 mm
11.1 wet days
Daylight
11 h 48 min
7:26 AM – 7:15 PM
Cloud cover
63%
10th clearest
Wind
12 km/h
2nd windiest
Solar energy
4.06 kWh/m²
Travel score
6.4
out of 10

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 Eldorado do Sul reaches about 22°C in the afternoon and slips back to 13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 28°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)
12213
22213
32213
42213
52213
62213
72213
82213
92213
102213
112213
122213
132213
142213
152213
162213
172213
182213
192213
202213
212213
222214
232214
242214
252214
262214
272314
282314
292314
302314

How September really feels in Eldorado do Sul

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Eldorado do Sul weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°12713.113.74.6
Feb30° / 21°11612.513.14.7
Mar28° / 20°10411.312.25.7
Apr26° / 17°1049.111.36.9
May22° / 13°1078.510.56.8
Jun19° / 11°1159.210.16.2
Jul19° / 10°1409.810.36.1
Aug21° / 11°1179.810.96.6
Sep22° / 13°14511.111.86.4
Oct24° / 16°16512.112.76.4
Nov27° / 17°11910.113.56.5
Dec29° / 20°11511.613.95.2

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 12% of September, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24654
34654
44555
54555
64357
74357
84258
94258
104258
114258
124258
134258
144159
154258
164258
174258
184258
194258
204258
214357
224357
234258
244159
254159
264060
274060
283961
293961
303862

Chance of precipitation in September

Any precipitation

Eldorado do Sul gets around 145 mm of rain over 11.1 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 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
134
234
335
435
536
636
736
836
937
1037
1137
1237
1337
1438
1538
1638
1738
1838
1937
2037
2137
2237
2337
2438
2538
2638
2738
2839
2939
3039

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 41% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14526253
24426264
34427264
44427264
54427254
64327254
74328254
84328254
94328254
104228254
114228254
124129255
134128265
144128265
154128265
164128275
174127276
184127276
194127276
204127266
214126267
224026277
234026277
243926277
253926278
263826288
273826289
283726289
2936262810
3036262810

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 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
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 7:45 AM to 7:08 AM, and sunset from 7:07 PM to 7:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:457:07
211.47:447:08
311.47:437:08
411.57:427:09
511.57:407:09
611.57:397:10
711.57:387:10
811.67:377:11
911.67:357:12
1011.67:347:12
1111.77:337:13
1211.77:317:13
1311.77:307:14
1411.87:297:14
1511.87:277:15
1611.87:267:15
1711.97:257:16
1811.97:247:17
1911.97:227:17
2011.97:217:18
2112.07:207:18
2212.07:187:19
2312.07:177:19
2412.17:167:20
2512.17:147:21
2612.17:137:21
2712.27:127:22
2812.27:117:22
2912.27:097:23
3012.37:087:23

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.06 kWh/m².

For context, solar energy here swings from a low near 2.38 kWh/m² to a high of 6.56 kWh/m² in December across the year — September's 4.06 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.7Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
134.0Moderate
144.0Moderate
154.0Bright
164.0Bright
174.1Bright
184.1Bright
194.1Bright
204.2Bright
214.2Bright
224.2Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Is September a good time to visit Eldorado do Sul?

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

6.4
Sightseeing
5th-best month of the year
4.5
Beach & pool
9th-best month of the year

September is a reasonable time to visit Eldorado do Sul for sightseeing.

What to pack for Eldorado do Sul in September

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

In September, Eldorado do Sul sees daytime highs around 22°C and nights near 13°C. Worth packing: light clothes and rain gear. About 11 days see rain.

light clothesrain gear

Sea temperature near Eldorado do Sul in September

The nearest coast averages about 17°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 57 km away) is warmest in February at about 26°C and coldest in July near 15°C.

It's comfortable for a long swim from Oct 23 to May 10 — about 6.6 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar25Warm
Apr23Refreshing
May19Cool
Jun17Cool
Jul15Cool
Aug16Cool
Sep17Cool
Oct20Cool
Nov22Refreshing
Dec24Warm

UV index in Eldorado do Sul 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 Eldorado do Sul peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 15UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar9Very high
Apr7Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct7Very high
Nov11Extreme
Dec12Extreme

Air quality in Eldorado do Sul 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 Eldorado do Sul is worst in August — around 20 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1720 µg/m³Dec 1811 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb11Good
Mar12Good
Apr15Moderate
May17Moderate
Jun17Moderate
Jul19Moderate
Aug20Moderate
Sep19Moderate
Oct13Moderate
Nov12Good
Dec10Good
Location & terrain

Where is Eldorado do Sul?

Eldorado do Sul sits at 30.1°S, 51.6°W, 30 m above sea level, in Brazil. The nearest listed city is Charqueadas, 14 km away.

Topography around Eldorado do Sul

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

Within 3 km, the terrain around Eldorado do Sul has only modest variations in elevation — a maximum elevation change of 88 m around an average of 33 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 287 m; within 80 km, large variations in elevation — a maximum elevation change of 720 m.

The land around Eldorado do Sul is covered by cropland (36%), trees (30%) and grassland (29%) within 3 km, trees (45%), grassland (27%) and cropland (23%) within 16 km, and trees (48%) and grassland (20%) within 80 km.

3 km
88 m
16 km
287 m
80 km
720 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Charqueadas 14 km · São Jerônimo 17 km · Triunfo 18 km · Guaíba 28 km · Butiá 34 km · Porto Alegre 38 km · Taquari 40 km · Nova Santa Rita 42 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 Eldorado do Sul (-30.0839°, -51.6161°, elevation 30 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).