Sumaré weather in September

In September, Sumaré sees average daytime highs of 28°C and overnight lows near 16°C, with 78 mm of rain across 8.2 wet days and about 11.9 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 49% of the time in September, and the air most often feels dry.

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 Sumaré's 4th-clearest and 1st-windiest month. For the whole year in context, see Sumaré's year-round climate.

Daytime high
28°
7th warmest
Overnight low
16°
5th coldest
Rainfall
78 mm
8.2 wet days
Daylight
11 h 54 min
7:07 AM – 6:59 PM
Cloud cover
46%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
5.4 kWh/m²
Travel score
6.2
out of 10

Sumaré 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 28°C through the month.

A typical September day in Sumaré reaches about 28°C in the afternoon and slips back to 16°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 34°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12815
22815
32815
42816
52816
62816
72816
82816
92816
102816
112916
122916
132916
142916
152816
162817
172817
182817
192817
202817
212817
222817
232817
242817
252817
262817
272817
282817
292817
302817

Sumaré weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°27022.413.23.7
Feb30° / 20°18618.312.83.9
Mar29° / 20°14617.212.24.6
Apr28° / 18°688.311.56.4
May25° / 15°606.410.97.5
Jun25° / 14°424.310.68.1
Jul25° / 13°384.110.78.2
Aug27° / 14°32411.27.9
Sep28° / 16°788.211.96.2
Oct29° / 18°12313.312.55.0
Nov29° / 19°16915.713.14.7
Dec29° / 20°21319.713.44.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17426
27426
37327
47228
57129
67030
77030
86931
96832
106832
116733
126634
136535
146535
156436
166337
176238
186139
196139
206040
215842
225743
235644
245446
255347
265248
275149
284951
294951
304852

Chance of precipitation in September

Any precipitation

Sumaré gets around 78 mm of rain over 8.2 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 27% 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 (%)
118
219
319
420
521
621
722
822
922
1023
1123
1223
1324
1424
1525
1626
1727
1827
1928
2029
2130
2231
2333
2434
2535
2635
2736
2837
2937
3038

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 37% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15729131
25530141
35430151
45330161
55230171
65131171
74931181
84832192
94633202
104433202
114334212
124135222
133936232
143836233
153637243
163537253
173437254
183238264
193137265
203037276
212937287
222836287
232736299
2426353010
2525343011
2624333112
2723333213
2822323314
2922313314
3021303415

Wind in September

Winds average 11 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 10 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
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
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 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 7:23 AM to 6:53 AM, and sunset from 6:55 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:236:55
211.67:226:55
311.67:216:56
411.67:206:56
511.67:196:56
611.67:186:56
711.77:176:57
811.77:166:57
911.77:156:57
1011.77:146:58
1111.87:136:58
1211.87:116:58
1311.87:106:59
1411.87:096:59
1511.87:086:59
1611.97:076:59
1711.97:067:00
1811.97:057:00
1911.97:047:00
2012.07:037:01
2112.07:027:01
2212.07:017:01
2312.07:007:02
2412.16:597:02
2512.16:587:02
2612.16:577:03
2712.16:567:03
2812.16:557:03
2912.26:547:04
3012.26:537:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.4 kWh/m².

For context, solar energy here swings from a low near 3.66 kWh/m² to a high of 6.03 kWh/m² in November across the year — September's 5.4 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Sumaré

In seasonPeak

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

Sumaré'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 Sumaré?

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

6.2
Sightseeing
6th-best month of the year
7.4
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Sumaré for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Sumaré in September

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

In September, Sumaré sees daytime highs around 28°C and nights near 16°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Sumaré 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 Sumaré peaks around January 20 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 20UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Sumaré 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 Sumaré is worst in September — around 32 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1032 µg/m³Dec 1516 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar19Moderate
Apr22Moderate
May26Moderate
Jun28Moderate
Jul30Moderate
Aug31Moderate
Sep32Moderate
Oct22Moderate
Nov16Moderate
Dec16Moderate
Location & terrain

Where is Sumaré?

Sumaré sits at 22.8°S, 47.3°W, 573 m above sea level, in Brazil. The nearest listed city is Nova Odessa, 6.0 km away.

Topography around Sumaré

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

Within 3 km, the terrain around Sumaré has only modest variations in elevation — a maximum elevation change of 82 m around an average of 575 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 178 m; within 80 km, large variations in elevation — a maximum elevation change of 852 m.

The land around Sumaré is covered by artificial surfaces (47%) and trees (23%) within 3 km, cropland (33%), artificial surfaces (26%) and trees (21%) within 16 km, and trees (34%), cropland (32%) and grassland (26%) within 80 km.

3 km
82 m
16 km
178 m
80 km
852 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Nova Odessa 6.0 km · Hortolândia 6.0 km · Americana 11 km · Paulínia 13 km · Monte Mor 15 km · Santa Bárbara d'Oeste 17 km · Cosmópolis 21 km · Campinas 23 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 Sumaré (-22.8219°, -47.2669°, elevation 573 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).