Pilar do Sul weather in September

In September, Pilar do Sul sees average daytime highs of 24°C and overnight lows near 14°C, with 95 mm of rain across 9.1 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 35% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Pilar do Sul's 6th-clearest and 1st-windiest month. For the whole year in context, see Pilar do Sul's year-round climate.

Daytime high
24°
8th warmest
Overnight low
14°
5th coldest
Rainfall
95 mm
9.1 wet days
Daylight
11 h 54 min
7:09 AM – 7:01 PM
Cloud cover
59%
6th clearest
Wind
12 km/h
1st windiest
Solar energy
4.61 kWh/m²
Travel score
7.1
out of 10

Pilar do Sul 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 24°C through the month.

A typical September day in Pilar do Sul reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 31°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12414
22414
32414
42414
52414
62514
72514
82514
92514
102514
112514
122514
132514
142514
152514
162514
172415
182415
192415
202415
212415
222415
232415
242415
252415
262415
272415
282415
292415
302515

Pilar do Sul weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°24522.613.34.5
Feb28° / 19°17419.312.84.6
Mar27° / 19°12718.412.25.2
Apr26° / 17°608.711.56.9
May23° / 14°637.110.97.3
Jun22° / 13°585.810.67.4
Jul22° / 12°555.310.77.6
Aug23° / 13°414.911.27.9
Sep24° / 14°959.111.97.1
Oct26° / 16°11112.612.66.2
Nov26° / 17°14114.813.25.7
Dec27° / 19°17318.713.45.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% 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 54%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16139
26040
35941
45842
55644
65545
75446
85248
95149
104951
114852
124753
134654
144555
154555
164456
174357
184357
194258
204159
214060
223961
233862
243862
253763
263763
273664
283664
293664
303565

Chance of precipitation in September

Any precipitation

Pilar do Sul gets around 95 mm of rain over 9.1 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 30% and peaks near 38% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
120
221
321
422
523
623
724
825
925
1026
1127
1227
1328
1429
1529
1630
1731
1832
1932
2033
2134
2235
2336
2436
2537
2637
2738
2838
2938
3038

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 43% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14244140
24144150
34044160
43944170
53844180
63844190
73744190
83644200
93544211
103444221
113244231
123144241
133044251
142944261
152844271
162844271
172744281
182644291
192544292
202444302
212443312
222343313
232243323
242142334
252041345
262041355
271940356
281839366
291838377
301738387

Wind in September

Winds average 12 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 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
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 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 42 minutes over September. Sunrise moves from 7:25 AM to 6:54 AM, and sunset from 6:56 PM to 7:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:256:56
211.57:246:56
311.67:236:57
411.67:226:57
511.67:216:57
611.67:206:58
711.77:196:58
811.77:186:58
911.77:176:59
1011.77:166:59
1111.77:156:59
1211.87:147:00
1311.87:137:00
1411.87:117:00
1511.87:107:01
1611.97:097:01
1711.97:087:01
1811.97:077:02
1911.97:067:02
2012.07:057:02
2112.07:047:03
2212.07:037:03
2312.07:027:03
2412.17:017:04
2512.17:007:04
2612.16:597:05
2712.16:577:05
2812.16:567:05
2912.26:557:06
3012.26:547:06

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.61 kWh/m².

For context, solar energy here swings from a low near 3.18 kWh/m² to a high of 5.61 kWh/m² in December across the year — September's 4.61 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Hazard calendar for Pilar do Sul

In seasonPeak

None of Pilar do Sul's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Pilar do Sul's rainy season runs October–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Pilar do Sul?

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

7.1
Sightseeing
5th-best month of the year
6.2
Beach & pool
3rd-best month of the year

September is one of the better times to visit Pilar do Sul for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Pilar do Sul in September

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

In September, Pilar do Sul sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Pilar 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 Pilar do Sul peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 21UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar11Extreme
Apr8Very high
May7High
Jun6High
Jul5High
Aug7Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Pilar 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 Pilar do Sul is worst in September — around 18 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (January, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1017 µg/m³Jan 1410 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar10Good
Apr11Good
May14Moderate
Jun15Moderate
Jul16Moderate
Aug17Moderate
Sep18Moderate
Oct13Moderate
Nov10Good
Dec10Good
Location & terrain

Where is Pilar do Sul?

Pilar do Sul sits at 23.8°S, 47.7°W, 697 m above sea level, in Brazil. The nearest listed city is Salto de Pirapora, 23 km away.

Topography around Pilar do Sul

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

Within 3 km, the terrain around Pilar do Sul has only modest variations in elevation — a maximum elevation change of 122 m around an average of 696 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 473 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,386 m.

The land around Pilar do Sul is covered by grassland (34%), cropland (27%) and trees (25%) within 3 km, trees (57%) and grassland (25%) within 16 km, and trees (66%) within 80 km.

3 km
122 m
16 km
473 m
80 km
1,386 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Salto de Pirapora 23 km · São Miguel Arcanjo 29 km · Piedade 31 km · Araçoiaba da Serra 36 km · Capela do Alto 38 km · Votorantim 41 km · Itapetininga 42 km · Sorocaba 43 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 Pilar do Sul (-23.8131°, -47.7164°, elevation 697 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).