Capão Bonito weather in September

In September, Capão Bonito sees average daytime highs of 23°C and overnight lows near 14°C, with 95 mm of rain across 9.4 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 29% 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 Capão Bonito's 6th-clearest and 1st-windiest month. For the whole year in context, see Capão Bonito's year-round climate.

Daytime high
23°
8th warmest
Overnight low
14°
4th coldest
Rainfall
95 mm
9.4 wet days
Daylight
11 h 54 min
7:12 AM – 7:04 PM
Cloud cover
65%
6th clearest
Wind
11 km/h
1st windiest
Solar energy
4.23 kWh/m²
Travel score
6.8
out of 10

Capão Bonito 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 Capão Bonito reaches about 23°C in the afternoon and slips back to 14°C overnight — a 10°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
72313
82313
92314
102314
112314
122314
132314
142314
152314
162314
172314
182314
192314
202314
212314
222314
232314
242314
252314
262314
272314
282314
292314
302314

Capão Bonito 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°25323.913.34.3
Feb27° / 19°18520.912.84.4
Mar26° / 18°13420.412.25.0
Apr25° / 17°6410.111.56.7
May22° / 14°728.410.96.8
Jun21° / 13°626.310.57.1
Jul21° / 12°635.810.77.2
Aug22° / 12°445.511.27.5
Sep23° / 14°959.411.96.8
Oct24° / 15°11013.812.66.0
Nov25° / 16°12815.913.25.6
Dec27° / 18°17420.113.54.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% 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 62%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25347
35149
45050
54852
64753
74654
84456
94357
104258
114159
124060
133961
143862
153862
163763
173664
183565
193466
203367
213466
223367
233268
243169
253070
262971
272971
282872
292971
302773

Chance of precipitation in September

Any precipitation

Capão Bonito gets around 95 mm of rain over 9.4 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 31% and peaks near 42% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
121
222
322
423
523
624
725
825
926
1026
1127
1227
1328
1428
1529
1630
1731
1832
1933
2034
2135
2236
2337
2438
2539
2640
2741
2841
2942
3042

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 46% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13748150
23748160
33648160
43548170
53447180
63447190
73347191
83247201
93247201
103148211
113048211
122948221
132848231
142748241
152648241
162548252
172548262
182448262
192447272
202347282
212346292
222246302
232245312
242144323
252044333
262043344
271942354
281941354
291841365
301840375

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
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
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 7:28 AM to 6:57 AM, and sunset from 6:58 PM to 7:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:286:58
211.57:276:59
311.67:266:59
411.67:256:59
511.67:247:00
611.67:237:00
711.67:227:01
811.77:207:01
911.77:197:01
1011.77:187:02
1111.77:177:02
1211.87:167:02
1311.87:157:03
1411.87:147:03
1511.87:137:03
1611.97:127:04
1711.97:117:04
1811.97:107:04
1911.97:097:05
2012.07:077:05
2112.07:067:05
2212.07:057:06
2312.07:047:06
2412.17:037:06
2512.17:027:07
2612.17:017:07
2712.17:007:07
2812.16:597:08
2912.26:587:08
3012.26:577:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.23 kWh/m².

For context, solar energy here swings from a low near 2.98 kWh/m² to a high of 5.43 kWh/m² in December across the year — September's 4.23 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Capão Bonito

In seasonPeak

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

Capão Bonito's rainy season runs November–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 Capão Bonito?

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

6.8
Sightseeing
4th-best month of the year
5.5
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Capão Bonito for sightseeing.

What to pack for Capão Bonito in September

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

In September, Capão Bonito sees daytime highs around 23°C and nights near 14°C. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Capão Bonito 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 Capão Bonito 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 Capão Bonito 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 Capão Bonito 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 Capão Bonito?

Capão Bonito sits at 24.0°S, 48.3°W, 712 m above sea level, in Brazil. The nearest listed city is Guapiara, 27 km away.

Topography around Capão Bonito

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

Within 3 km, the terrain around Capão Bonito has only modest variations in elevation — a maximum elevation change of 110 m around an average of 683 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 323 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,284 m.

The land around Capão Bonito is covered by cropland (42%) and artificial surfaces (23%) within 3 km, trees (60%) and cropland (24%) within 16 km, and trees (67%) within 80 km.

3 km
110 m
16 km
323 m
80 km
1,284 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Guapiara 27 km · Buri 34 km · São Miguel Arcanjo 38 km · Ribeirão Branco 49 km · Itapeva 54 km · Itapetininga 55 km · Angatuba 58 km · Pilar do Sul 68 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 Capão Bonito (-24.0058°, -48.3494°, elevation 712 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).