Butiá weather in September

In September, Butiá sees average daytime highs of 22°C and overnight lows near 13°C, with 152 mm of rain across 11.3 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 31% 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 Butiá's 10th-clearest and 2nd-windiest month. For the whole year in context, see Butiá's year-round climate.

Daytime high
22°
8th warmest
Overnight low
13°
4th coldest
Rainfall
152 mm
11.3 wet days
Daylight
11 h 48 min
7:28 AM – 7:17 PM
Cloud cover
62%
10th clearest
Wind
11 km/h
2nd windiest
Solar energy
4.03 kWh/m²
Travel score
6.3
out of 10

Butiá 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 Butiá 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)
12212
22212
32212
42212
52212
62212
72212
82212
92213
102213
112213
122213
132213
142213
152213
162213
172213
182213
192213
202213
212213
222213
232213
242213
252213
262213
272213
282314
292314
302314

How September really feels in Butiá

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.

Butiá 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° / 20°13013.913.74.5
Feb30° / 20°12512.513.14.7
Mar28° / 19°10810.812.25.8
Apr25° / 16°1149.211.36.9
May21° / 13°1148.810.56.7
Jun19° / 11°1269.310.16.1
Jul19° / 10°14810.210.36.0
Aug21° / 11°1201010.96.5
Sep22° / 13°15211.311.86.3
Oct24° / 15°17812.212.76.4
Nov27° / 17°12410.313.56.4
Dec29° / 19°12611.513.95.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 10% 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 (%)
14654
24555
34456
44456
54258
64258
74159
84060
94060
104159
114060
124159
134060
144060
154060
164060
174060
184060
194060
204159
214159
224159
234159
244159
254060
264060
273961
283961
293763
303862

Chance of precipitation in September

Any precipitation

Butiá gets around 152 mm of rain over 11.3 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 38% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
135
236
336
436
537
637
737
838
938
1038
1138
1238
1339
1439
1539
1639
1739
1838
1938
2038
2138
2238
2338
2438
2538
2638
2739
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 43% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14824244
24824244
34724244
44725245
54625245
64625245
74626245
84526235
94527235
104527235
114427235
124428235
134328245
144328245
154328246
164328246
174328246
184328246
194328236
204328236
214328237
224228237
234228237
244128237
254128238
264028248
273928249
283928249
2938282410
3037282410

Wind in September

Winds average 11 km/h in September.

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 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 7:09 AM, and sunset from 7:08 PM to 7:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:477:08
211.47:457:09
311.47:447:10
411.57:437:10
511.57:427:11
611.57:407:11
711.57:397:12
811.67:387:12
911.67:377:13
1011.67:357:13
1111.77:347:14
1211.77:337:15
1311.77:317:15
1411.87:307:16
1511.87:297:16
1611.87:287:17
1711.97:267:17
1811.97:257:18
1911.97:247:18
2011.97:227:19
2112.07:217:20
2212.07:207:20
2312.07:187:21
2412.17:177:21
2512.17:167:22
2612.17:157:22
2712.27:137:23
2812.27:127:24
2912.27:117:24
3012.37:097:25

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.03 kWh/m².

For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 6.48 kWh/m² in December across the year — September's 4.03 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
144.0Moderate
154.0Bright
164.0Bright
174.1Bright
184.1Bright
194.1Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.4Bright
Planning a trip in September

Is September a good time to visit Butiá?

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

6.3
Sightseeing
6th-best month of the year
4.4
Beach & pool
8th-best month of the year

September is a reasonable time to visit Butiá for sightseeing.

What to pack for Butiá in September

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

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

rain gear

UV index in Butiá 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 Butiá peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 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 18UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Very high
Apr7Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct7High
Nov11Extreme
Dec12Extreme

Air quality in Butiá 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 Butiá 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 Butiá?

Butiá sits at 30.1°S, 52.0°W, 71 m above sea level, in Brazil. The nearest listed city is São Jerônimo, 29 km away.

Topography around Butiá

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

Within 3 km, the terrain around Butiá has only modest variations in elevation — a maximum elevation change of 163 m around an average of 71 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 304 m; within 80 km, large variations in elevation — a maximum elevation change of 631 m.

The land around Butiá is covered by trees (38%) and grassland (28%) within 3 km, trees (37%), grassland (34%) and cropland (27%) within 16 km, and trees (49%), cropland (23%) and grassland (22%) within 80 km.

3 km
163 m
16 km
304 m
80 km
631 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: São Jerônimo 29 km · Triunfo 31 km · Eldorado do Sul 34 km · Taquari 37 km · Charqueadas 37 km · Rio Pardo 43 km · Venâncio Aires 61 km · Guaíba 61 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 Butiá (-30.1197°, -51.9622°, elevation 71 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).