São Manuel weather in September

In September, São Manuel sees average daytime highs of 28°C and overnight lows near 16°C, with 68 mm of rain across 8 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 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 São Manuel's 4th-clearest and 1st-windiest month. For the whole year in context, see São Manuel's year-round climate.

Daytime high
28°
7th warmest
Overnight low
16°
5th coldest
Rainfall
68 mm
8 wet days
Daylight
11 h 54 min
7:12 AM – 7:05 PM
Cloud cover
47%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
5.33 kWh/m²
Travel score
6.9
out of 10

São Manuel 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 São Manuel 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 22°C and 33°C. Set against its neighbours, September runs about 2°C warmer than August and about 1°C cooler than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12815
22815
32815
42815
52815
62815
72816
82816
92816
102816
112816
122816
132816
142816
152816
162816
172816
182816
192816
202816
212816
222816
232816
242816
252816
262816
272816
282816
292817
302817

São Manuel 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
Jan29° / 21°24522.313.23.8
Feb29° / 20°17518.612.84.0
Mar29° / 20°13116.912.24.7
Apr28° / 18°557.511.56.7
May25° / 15°576.410.97.6
Jun24° / 14°434.810.68.1
Jul24° / 13°353.810.78.3
Aug26° / 14°354.111.28.0
Sep28° / 16°68811.96.9
Oct29° / 18°11512.212.55.3
Nov29° / 19°14414.713.14.9
Dec29° / 20°18419.613.44.2

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 12% of September, with mostly cloudy or overcast conditions the remaining 41%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17327
27129
37129
47030
56832
66733
76634
86535
96436
106337
116238
126238
136139
146040
155941
165941
175941
185842
195842
205644
215545
225446
235347
245248
255149
265050
275050
284852
294852
304753

Chance of precipitation in September

Any precipitation

São Manuel gets around 68 mm of rain over 8 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 26% and peaks near 35% 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
520
620
721
821
922
1022
1122
1223
1323
1424
1524
1625
1726
1827
1927
2028
2129
2230
2331
2432
2533
2634
2734
2834
2935
3035

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 (%)
15333131
25233141
35233141
45232151
55132161
65032171
74833172
84733182
94633192
104434192
114335202
124135213
134036213
143937223
153737223
163638233
173538234
183338244
193239245
203139255
213039256
222839267
232738278
242638279
2525372810
2624362811
2723362912
2822353013
2922353014
3021343114

Wind in September

Winds average 11 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
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
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 7:28 AM to 6:58 AM, and sunset from 7:00 PM to 7:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:287:00
211.67:277:00
311.67:267:01
411.67:257:01
511.67:247:01
611.67:237:02
711.77:227:02
811.77:217:02
911.77:207:03
1011.77:197:03
1111.87:187:03
1211.87:177:04
1311.87:167:04
1411.87:157:04
1511.87:147:04
1611.97:127:05
1711.97:117:05
1811.97:107:05
1911.97:097:06
2012.07:087:06
2112.07:077:06
2212.07:067:07
2312.07:057:07
2412.17:047:07
2512.17:037:08
2612.17:027:08
2712.17:017:08
2812.17:007:08
2912.26:597:09
3012.26:587:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.33 kWh/m².

For context, solar energy here swings from a low near 3.56 kWh/m² to a high of 5.97 kWh/m² in November across the year — September's 5.33 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
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for São Manuel

In seasonPeak

None of São Manuel'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 Manuel'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 Manuel?

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
7.3
Beach & pool
2nd-best month of the year

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

What to pack for São Manuel in September

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

In September, São Manuel 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 São Manuel 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 Manuel peaks around January 21 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 21UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in São Manuel 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 Manuel is worst in September — around 22 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1022 µg/m³Nov 239 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar10Good
Apr11Good
May13Moderate
Jun14Moderate
Jul14Moderate
Aug22Moderate
Sep22Moderate
Oct17Moderate
Nov9Good
Dec9Good
Location & terrain

Where is São Manuel?

São Manuel sits at 22.7°S, 48.6°W, 704 m above sea level, in Brazil. The nearest listed city is Botucatu, 21 km away.

Topography around São Manuel

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

Within 3 km, the terrain around São Manuel has only modest variations in elevation — a maximum elevation change of 152 m around an average of 731 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 457 m; within 80 km, large variations in elevation — a maximum elevation change of 645 m.

The land around São Manuel is covered by cropland (38%), artificial surfaces (21%) and trees (20%) within 3 km, cropland (57%) and trees (28%) within 16 km, and cropland (40%) and trees (39%) within 80 km.

3 km
152 m
16 km
457 m
80 km
645 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Botucatu 21 km · Igaraçu do Tietê 25 km · Barra Bonita 26 km · Lençóis Paulista 28 km · Macatuba 29 km · Itatinga 41 km · Dois Córregos 45 km · Pederneiras 47 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 Manuel (-22.7311°, -48.5706°, elevation 704 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).