São Bernardo do Campo weather in September

In September, São Bernardo do Campo sees average daytime highs of 24°C and overnight lows near 15°C, with 129 mm of rain across 13.9 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 24°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 Bernardo do Campo's 6th-clearest and 2nd-windiest month. For the whole year in context, see São Bernardo do Campo's year-round climate.

Daytime high
24°
8th warmest
Overnight low
15°
4th coldest
Rainfall
129 mm
13.9 wet days
Daylight
11 h 54 min
7:05 AM – 6:57 PM
Cloud cover
68%
6th clearest
Wind
9 km/h
2nd windiest
Solar energy
4.53 kWh/m²
Travel score
6.2
out of 10

São Bernardo do Campo is human settlement in Brazil.

Air quality
Elevated
PM2.5 17 µg/m³ · 2016

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 São Bernardo do Campo reaches about 24°C in the afternoon and slips back to 15°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 on par with August and about 1°C cooler than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12414
22414
32414
42415
52415
62415
72415
82415
92415
102415
112415
122415
132415
142415
152415
162415
172415
182415
192415
202415
212415
222415
232415
242415
252415
262415
272415
282416
292416
302416

São Bernardo do Campo 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° / 20°33726.613.33.9
Feb28° / 20°2752312.84.0
Mar27° / 19°27124.612.24.3
Apr25° / 18°11415.811.55.7
May23° / 15°9612.110.96.4
Jun22° / 14°708.410.67.0
Jul22° / 13°848.310.77.1
Aug23° / 14°688.811.27.1
Sep24° / 15°12913.911.96.2
Oct25° / 17°15717.812.65.4
Nov25° / 18°20920.713.14.9
Dec27° / 19°25123.913.44.3

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 9% of September, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
24951
34951
44852
54753
64654
74555
84456
94258
104159
114060
123961
133862
143862
153664
163664
173466
183367
193268
203268
213070
222971
232872
242773
252674
262674
272575
282476
292377
302476

Chance of precipitation in September

Any precipitation

São Bernardo do Campo gets around 129 mm of rain over 13.9 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 45% and peaks near 57% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
135
236
336
437
537
638
738
839
939
1040
1140
1240
1341
1441
1542
1643
1744
1846
1947
2049
2150
2251
2352
2454
2555
2655
2756
2857
2957
3057

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 42% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11951291
21851301
31751311
41750321
51650331
61550341
71549352
81448362
91447372
101347382
111346393
121245393
131244403
141244413
151243424
161242434
171241434
181240444
191239445
201238445
211238456
221237456
231236457
241136468
251135468
261134469
2711334710
2810324711
2910314711
3010314712

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 9 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
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 7:20 AM to 6:50 AM, and sunset from 6:51 PM to 7:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:206:51
211.57:196:52
311.67:186:52
411.67:176:53
511.67:166:53
611.67:156:53
711.77:146:54
811.77:136:54
911.77:126:54
1011.77:116:55
1111.77:106:55
1211.87:096:55
1311.87:086:56
1411.87:076:56
1511.87:066:56
1611.97:056:57
1711.97:046:57
1811.97:026:57
1911.97:016:58
2012.07:006:58
2112.06:596:58
2212.06:586:59
2312.06:576:59
2412.16:566:59
2512.16:557:00
2612.16:547:00
2712.16:537:00
2812.16:527:01
2912.26:517:01
3012.26:507:01

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.53 kWh/m².

For context, solar energy here swings from a low near 3.21 kWh/m² to a high of 5.74 kWh/m² in December across the year — September's 4.53 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for São Bernardo do Campo

In seasonPeak

None of São Bernardo do Campo'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 Bernardo do Campo'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 Bernardo do Campo?

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

6.2
Sightseeing
5th-best month of the year
5.2
Beach & pool
3rd-best month of the year

September is a reasonable time to visit São Bernardo do Campo for sightseeing.

What to pack for São Bernardo do Campo in September

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

In September, São Bernardo do Campo sees daytime highs around 24°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 14 days see rain.

rain gearlight clothessun protection

Sea temperature near São Bernardo do Campo in September

The nearest coast averages about 21°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 48 km away) is warmest in February at about 27°C and coldest in August near 20°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr26Warm
May24Refreshing
Jun22Refreshing
Jul21Refreshing
Aug20Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec25Warm

UV index in São Bernardo do Campo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São Bernardo do Campo peaks around February 8 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 8UV 14Jul 14UV 5
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar10Extreme
Apr9Very high
May7High
Jun6High
Jul5Moderate
Aug7Very high
Sep8Very high
Oct11Extreme
Nov12Extreme
Dec14Extreme

Air quality in São Bernardo do Campo 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 Bernardo do Campo is worst in July — around 26 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (February, 12 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to São Bernardo do Campo's WHO annual average of 17 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJul 1425 µg/m³Feb 1212 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb12Moderate
Mar13Moderate
Apr14Moderate
May18Moderate
Jun25Moderate
Jul26Moderate
Aug23Moderate
Sep21Moderate
Oct15Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is São Bernardo do Campo?

São Bernardo do Campo sits at 23.7°S, 46.6°W, 796 m above sea level, in Brazil. The nearest listed city is Santo André, 4.0 km away.

Topography around São Bernardo do Campo

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Bernardo do Campo.

Within 3 km, the terrain around São Bernardo do Campo has only modest variations in elevation — a maximum elevation change of 81 m around an average of 777 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 266 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,434 m.

The land around São Bernardo do Campo is covered by artificial surfaces (91%) within 3 km, artificial surfaces (58%) and trees (27%) within 16 km, and trees (53%) and water (22%) within 80 km.

3 km
81 m
16 km
266 m
80 km
1,434 m
treesgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Santo André 4.0 km · Diadema 6.0 km · Sacomã 8.0 km · São Caetano do Sul 8.0 km · Pedreira 9.0 km · Cursino 9.0 km · Jabaquara 10 km · Cidade Ademar 10 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 Bernardo do Campo (-23.6939°, -46.565°, elevation 796 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).