São Miguel Arcanjo weather in September

In September, São Miguel Arcanjo sees average daytime highs of 23°C and overnight lows near 14°C, with 122 mm of rain across 12.9 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 23°C through the month. The sky is clear or mostly clear about 27% 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 São Miguel Arcanjo's 6th-clearest and 3rd-windiest month. For the whole year in context, see São Miguel Arcanjo's year-round climate.

Daytime high
23°
8th warmest
Overnight low
14°
4th coldest
Rainfall
122 mm
12.9 wet days
Daylight
11 h 54 min
7:10 AM – 7:02 PM
Cloud cover
67%
6th clearest
Wind
9 km/h
3rd windiest
Solar energy
4.14 kWh/m²
Travel score
6.3
out of 10

São Miguel Arcanjo 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 23°C through the month.

A typical September day in São Miguel Arcanjo reaches about 23°C in the afternoon and slips back to 14°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 30°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12313
22313
32313
42313
52313
62313
72314
82314
92314
102314
112314
122314
132314
142314
152314
162314
172314
182314
192314
202314
212314
222314
232314
242314
252314
262314
272314
282314
292315
302315

São Miguel Arcanjo 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
Jan27° / 19°29825.313.34.1
Feb28° / 19°22922.312.84.1
Mar27° / 19°17523.112.24.6
Apr25° / 17°8612.811.56.2
May22° / 14°8610.410.96.5
Jun21° / 13°707.710.66.9
Jul21° / 12°757.710.76.9
Aug22° / 12°577.511.27.1
Sep23° / 14°12212.911.96.3
Oct24° / 16°14416.912.65.6
Nov25° / 17°16919.213.25.1
Dec27° / 18°20722.213.44.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% 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 63%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15149
25050
34951
44852
54753
64555
74456
84258
94159
104060
113961
123862
133961
143763
153664
163664
173466
183466
193367
203169
213169
223070
232971
242971
252773
262773
272674
282674
292575
302575

Chance of precipitation in September

Any precipitation

São Miguel Arcanjo gets around 122 mm of rain over 12.9 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 53% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
132
233
333
434
535
636
737
837
938
1038
1139
1239
1339
1440
1540
1641
1742
1843
1944
2045
2146
2247
2348
2449
2550
2650
2751
2852
2952
3053

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 (%)
12847241
22847241
32747251
42647251
52647261
62646272
72546272
82546282
92446282
102346292
112246293
122246303
132145313
142045313
152045323
161944334
171944334
181943344
191843354
201842355
211742365
221741366
231640376
241540387
251539398
261438398
271437409
2813374010
2913364110
3013354111

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 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
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 7:26 AM to 6:55 AM, and sunset from 6:57 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:266:57
211.57:256:57
311.67:246:58
411.67:236:58
511.67:226:58
611.67:216:59
711.77:206:59
811.77:196:59
911.77:187:00
1011.77:177:00
1111.77:167:01
1211.87:157:01
1311.87:147:01
1411.87:137:02
1511.87:127:02
1611.97:107:02
1711.97:097:03
1811.97:087:03
1911.97:077:03
2012.07:067:04
2112.07:057:04
2212.07:047:04
2312.07:037:05
2412.17:027:05
2512.17:017:05
2612.17:007:06
2712.16:597:06
2812.16:587:06
2912.26:567:07
3012.26:557:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.14 kWh/m².

For context, solar energy here swings from a low near 2.94 kWh/m² to a high of 5.37 kWh/m² in December across the year — September's 4.14 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
Planning a trip in September

Hazard calendar for São Miguel Arcanjo

In seasonPeak

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

São Miguel Arcanjo'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 São Miguel Arcanjo?

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

6.3
Sightseeing
5th-best month of the year
5.0
Beach & pool
3rd-best month of the year

September is a reasonable time to visit São Miguel Arcanjo for sightseeing.

What to pack for São Miguel Arcanjo in September

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

In September, São Miguel Arcanjo sees daytime highs around 23°C and nights near 14°C. Worth packing: light clothes and rain gear. About 13 days see rain.

light clothesrain gear

UV index in São Miguel Arcanjo 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 São Miguel Arcanjo peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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 20UV 15Jul 11UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in São Miguel Arcanjo 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 São Miguel Arcanjo 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 São Miguel Arcanjo?

São Miguel Arcanjo sits at 23.9°S, 48.0°W, 666 m above sea level, in Brazil. The nearest listed city is Pilar do Sul, 29 km away.

Topography around São Miguel Arcanjo

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

Within 3 km, the terrain around São Miguel Arcanjo has only modest variations in elevation — a maximum elevation change of 125 m around an average of 677 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 202 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,202 m.

The land around São Miguel Arcanjo is covered by trees (34%), grassland (32%) and cropland (22%) within 3 km, trees (51%), cropland (28%) and grassland (21%) within 16 km, and trees (64%) within 80 km.

3 km
125 m
16 km
202 m
80 km
1,202 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Pilar do Sul 29 km · Itapetininga 32 km · Capão Bonito 38 km · Salto de Pirapora 50 km · Capela do Alto 53 km · Araçoiaba da Serra 57 km · Guareí 59 km · Tatuí 60 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 São Miguel Arcanjo (-23.8783°, -47.9972°, elevation 666 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).