Souzas weather in September

In September, Souzas sees average daytime highs of 27°C and overnight lows near 16°C, with 84 mm of rain across 8.6 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 27°C through the month. The sky is clear or mostly clear about 47% 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 Souzas's 4th-clearest and 1st-windiest month. For the whole year in context, see Souzas's year-round climate.

Daytime high
27°
8th warmest
Overnight low
16°
5th coldest
Rainfall
84 mm
8.6 wet days
Daylight
11 h 54 min
7:06 AM – 6:58 PM
Cloud cover
48%
4th clearest
Wind
12 km/h
1st windiest
Solar energy
5.3 kWh/m²
Travel score
6.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Souzas reaches about 27°C in the afternoon and slips back to 16°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 32°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12715
22715
32715
42715
52715
62715
72715
82715
92715
102715
112715
122716
132716
142716
152716
162716
172716
182716
192716
202716
212716
222716
232716
242716
252716
262716
272716
282716
292716
302716

Souzas 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° / 20°25922.413.24.1
Feb29° / 20°17518.912.84.2
Mar28° / 19°13817.412.25.1
Apr27° / 17°688.711.56.8
May24° / 15°66710.97.5
Jun24° / 13°484.910.68.1
Jul24° / 13°444.310.78.3
Aug25° / 14°364.211.28.1
Sep27° / 16°848.611.96.9
Oct28° / 17°12513.412.55.9
Nov28° / 18°16115.913.15.4
Dec28° / 19°20420.213.44.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17129
27129
37030
46931
56832
66832
76733
86535
96436
106436
116436
126337
136337
146238
156139
166139
176040
185941
195941
205842
215743
225644
235545
245446
255347
265248
275149
285050
294951
304951

Chance of precipitation in September

Any precipitation

Souzas gets around 84 mm of rain over 8.6 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 28% and peaks near 39% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
119
220
320
421
521
622
723
823
923
1024
1124
1225
1325
1426
1526
1627
1728
1829
1930
2031
2132
2233
2334
2435
2536
2637
2738
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 38% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15732110
25632120
35533120
45433130
55333140
65134150
74935160
84835171
94636181
104437181
114238191
124138201
133939211
143840221
153640221
163541231
173441241
183341241
193241252
203141262
213041273
222941273
232840284
242740295
252639305
262539306
272438317
282337327
292237338
302136349

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
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze

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 7:22 AM to 6:52 AM, and sunset from 6:54 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:226:54
211.67:216:54
311.67:206:54
411.67:196:55
511.67:186:55
611.67:166:55
711.77:156:56
811.77:146:56
911.77:136:56
1011.77:126:56
1111.87:116:57
1211.87:106:57
1311.87:096:57
1411.87:086:58
1511.87:076:58
1611.97:066:58
1711.97:056:59
1811.97:046:59
1911.97:036:59
2012.07:027:00
2112.07:017:00
2212.07:007:00
2312.06:597:00
2412.16:587:01
2512.16:577:01
2612.16:567:01
2712.16:557:02
2812.16:547:02
2912.26:537:02
3012.26:527:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.3 kWh/m².

For context, solar energy here swings from a low near 3.61 kWh/m² to a high of 5.94 kWh/m² in November across the year — September's 5.3 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
Planning a trip in September

Hazard calendar for Souzas

In seasonPeak

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

Souzas'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 Souzas?

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

6.9
Sightseeing
5th-best month of the year
7.0
Beach & pool
2nd-best month of the year

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

What to pack for Souzas in September

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

In September, Souzas sees daytime highs around 27°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Souzas 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 Souzas peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 6 (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 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Souzas 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 Souzas is worst in July — around 38 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (January, 18 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateJul 1838 µg/m³Jan 1018 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb20Moderate
Mar22Moderate
Apr26Moderate
May31Moderate
Jun35Poor
Jul38Poor
Aug36Poor
Sep35Poor
Oct25Moderate
Nov18Moderate
Dec18Moderate
Location & terrain

Where is Souzas?

Souzas sits at 22.9°S, 47.0°W, 649 m above sea level, in Brazil. The nearest listed city is Campinas, 10 km away.

Topography around Souzas

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

Within 3 km, the terrain around Souzas has only modest variations in elevation — a maximum elevation change of 178 m around an average of 697 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 518 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,220 m.

The land around Souzas is covered by trees (49%) and grassland (30%) within 3 km, trees (38%) and grassland (32%) within 16 km, and trees (40%), grassland (27%) and cropland (23%) within 80 km.

3 km
178 m
16 km
518 m
80 km
1,220 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Campinas 10 km · Valinhos 11 km · Vinhedo 17 km · Itatiba 19 km · Jaguariúna 19 km · Louveira 23 km · Paulínia 23 km · Hortolândia 26 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 Souzas (-22.8792°, -46.9644°, elevation 649 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).