Piratininga weather in September

In September, Piratininga sees average daytime highs of 28°C and overnight lows near 17°C, with 70 mm of rain across 7.9 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 52% 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 Piratininga's 4th-clearest and 1st-windiest month. For the whole year in context, see Piratininga's year-round climate.

Daytime high
28°
7th warmest
Overnight low
17°
5th coldest
Rainfall
70 mm
7.9 wet days
Daylight
11 h 54 min
7:15 AM – 7:07 PM
Cloud cover
44%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
5.47 kWh/m²
Travel score
6.3
out of 10

Piratininga is human settlement in Brazil, Piratininga.

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 Piratininga reaches about 28°C in the afternoon and slips back to 17°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 34°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)
12816
22816
32816
42816
52816
62816
72816
82816
92816
102816
112817
122817
132817
142817
152817
162817
172817
182817
192817
202817
212817
222817
232817
242817
252817
262817
272817
282817
292817
302917

Piratininga 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°24122.213.23.8
Feb30° / 21°18818.712.83.9
Mar29° / 20°12916.812.24.6
Apr28° / 18°607.511.56.5
May25° / 15°586.110.97.6
Jun25° / 14°444.810.78.1
Jul25° / 14°323.910.88.3
Aug27° / 15°353.611.27.9
Sep28° / 17°707.911.96.3
Oct29° / 18°11912.612.55.1
Nov29° / 19°14214.813.14.7
Dec29° / 20°18619.213.34.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 36%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17624
27525
37525
47426
57228
67129
77129
87030
96931
106832
116733
126733
136535
146535
156436
166436
176337
186139
196139
206040
215941
225842
235743
245644
255545
265446
275347
285347
295248
305149

Chance of precipitation in September

Any precipitation

Piratininga gets around 70 mm of rain over 7.9 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 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 (%)
117
218
318
419
520
620
721
821
922
1022
1122
1223
1323
1424
1524
1625
1725
1826
1927
2028
2129
2230
2331
2432
2533
2633
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 7% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15430142
25330152
35329162
45229172
55129182
65128192
74928203
84828213
94629213
104529223
114330234
124131244
134032244
143833254
153733255
163534265
173435265
183235266
193135276
203036277
212836278
222736289
2326352811
2425352812
2524342813
2623342914
2722332916
2822322917
2921313018
3020303019

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
1611calm
1711calm
1811calm
1911calm
2011calm
2112calm
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 7:30 AM to 7:00 AM, and sunset from 7:03 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:307:03
211.67:297:03
311.67:287:03
411.67:277:04
511.67:267:04
611.77:257:04
711.77:247:04
811.77:237:05
911.77:227:05
1011.77:217:05
1111.87:207:06
1211.87:197:06
1311.87:187:06
1411.87:177:06
1511.97:167:07
1611.97:157:07
1711.97:147:07
1811.97:137:08
1911.97:127:08
2012.07:117:08
2112.07:107:09
2212.07:087:09
2312.07:077:09
2412.07:067:09
2512.17:057:10
2612.17:047:10
2712.17:037:10
2812.17:027:11
2912.27:017:11
3012.27:007:11

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.47 kWh/m².

For context, solar energy here swings from a low near 3.64 kWh/m² to a high of 6.02 kWh/m² in November across the year — September's 5.47 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
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
Planning a trip in September

Hazard calendar for Piratininga

In seasonPeak

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

Piratininga'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 Piratininga?

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

6.3
Sightseeing
6th-best month of the year
7.5
Beach & pool
2nd-best month of the year

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

What to pack for Piratininga in September

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

In September, Piratininga sees daytime highs around 28°C and nights near 17°C. Pack light clothes. Worth having: sun protection. About 8 days see rain.

light clothessun protection

UV index in Piratininga in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Piratininga peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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 22UV 15Jul 11UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Piratininga 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 Piratininga is worst in September — around 20 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (November, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1420 µg/m³Nov 238 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar9Good
Apr9Good
May11Good
Jun11Good
Jul11Good
Aug17Moderate
Sep20Moderate
Oct15Moderate
Nov8Good
Dec8Good
Location & terrain

Where is Piratininga?

Piratininga sits at 22.4°S, 49.1°W, 530 m above sea level, in Brazil. The nearest listed city is Bauru, 13 km away.

Topography around Piratininga

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

Within 3 km, the terrain around Piratininga has only modest variations in elevation — a maximum elevation change of 176 m around an average of 551 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 272 m; within 80 km, significant variations in elevation — a maximum elevation change of 520 m.

The land around Piratininga is covered by trees (35%), cropland (29%) and grassland (28%) within 3 km, trees (47%) and cropland (25%) within 16 km, and cropland (49%) and trees (34%) within 80 km.

3 km
176 m
16 km
272 m
80 km
520 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Bauru 13 km · Agudos 16 km · Pederneiras 38 km · Lençóis Paulista 40 km · Macatuba 45 km · Bariri 55 km · Pirajuí 57 km · Garça 58 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 Piratininga (-22.4128°, -49.1347°, elevation 530 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).