Ourinhos weather in September

In September, Ourinhos sees average daytime highs of 28°C and overnight lows near 17°C, with 84 mm of rain across 8.2 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 28°C through the month. The sky is clear or mostly clear about 50% 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 Ourinhos's 4th-clearest and 1st-windiest month. For the whole year in context, see Ourinhos's year-round climate.

Daytime high
28°
8th warmest
Overnight low
17°
5th coldest
Rainfall
84 mm
8.2 wet days
Daylight
11 h 54 min
7:18 AM – 7:10 PM
Cloud cover
46%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
5.25 kWh/m²
Travel score
6.5
out of 10

Ourinhos 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 Ourinhos 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
112816
122817
132817
142817
152817
162817
172817
182817
192817
202817
212817
222817
232817
242817
252817
262817
272817
282817
292817
302817

Ourinhos 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
Jan30° / 21°23421.113.33.8
Feb30° / 21°17118.112.83.9
Mar29° / 20°11815.712.24.6
Apr28° / 19°627.411.56.3
May25° / 16°676.810.97.4
Jun24° / 14°555.710.67.9
Jul25° / 14°434.510.78.2
Aug27° / 15°424.311.27.9
Sep28° / 17°848.211.96.5
Oct29° / 18°11411.912.55.2
Nov29° / 19°13713.513.14.8
Dec30° / 20°1731813.44.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% 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 39%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17426
27327
37228
47129
57030
66931
76733
86634
96634
106436
116436
126337
136238
146139
156040
166040
175941
185941
195842
205743
215743
225644
235545
245446
255347
265347
275248
285149
295050
305050

Chance of precipitation in September

Any precipitation

Ourinhos gets around 84 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 35% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
118
218
319
420
521
621
722
823
923
1024
1124
1225
1325
1426
1526
1627
1727
1828
1928
2029
2130
2230
2331
2432
2533
2634
2734
2835
2935
3035

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14736143
24735153
34635163
44535173
54434184
64334184
74234194
84135204
93935215
103836215
113636225
123537235
133337236
143238246
153138256
163039256
172939267
182839277
192738277
202638288
212538289
2224372910
2324362911
2423353012
2522353013
2621343015
2721333016
2820323017
2919323118
3019313120

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 11 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
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 7:33 AM to 7:03 AM, and sunset from 7:05 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:337:05
211.67:327:06
311.67:317:06
411.67:307:06
511.67:297:06
611.67:287:07
711.77:277:07
811.77:267:07
911.77:257:08
1011.77:247:08
1111.87:237:08
1211.87:227:09
1311.87:217:09
1411.87:207:09
1511.87:197:10
1611.97:187:10
1711.97:177:10
1811.97:167:10
1911.97:157:11
2012.07:147:11
2112.07:127:11
2212.07:117:12
2312.07:107:12
2412.17:097:12
2512.17:087:13
2612.17:077:13
2712.17:067:13
2812.17:057:14
2912.27:047:14
3012.27:037:14

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.25 kWh/m².

For context, solar energy here swings from a low near 3.43 kWh/m² to a high of 5.97 kWh/m² in November across the year — September's 5.25 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
Planning a trip in September

Hazard calendar for Ourinhos

In seasonPeak

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

Ourinhos'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 Ourinhos?

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

6.5
Sightseeing
5th-best month of the year
7.3
Beach & pool
3rd-best month of the year

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

What to pack for Ourinhos in September

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

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

light clothesrain gearsun protection

UV index in Ourinhos in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ourinhos peaks around January 22 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 22UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Ourinhos 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 Ourinhos is worst in September — around 16 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (March, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1216 µg/m³Mar 187 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb7Good
Mar7Good
Apr7Good
May8Good
Jun9Good
Jul9Good
Aug15Moderate
Sep16Moderate
Oct11Good
Nov7Good
Dec7Good
Location & terrain

Where is Ourinhos?

Ourinhos sits at 23.0°S, 49.9°W, 488 m above sea level, in Brazil. The nearest listed city is Cambará, 22 km away.

Topography around Ourinhos

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

Within 3 km, the terrain around Ourinhos has only modest variations in elevation — a maximum elevation change of 136 m around an average of 450 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 306 m; within 80 km, large variations in elevation — a maximum elevation change of 624 m.

The land around Ourinhos is covered by artificial surfaces (55%) within 3 km, cropland (64%) within 16 km, and cropland (49%), grassland (24%) and trees (23%) within 80 km.

3 km
136 m
16 km
306 m
80 km
624 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Cambará 22 km · Jacarezinho 23 km · Santa Cruz do Rio Pardo 26 km · Andirá 38 km · Santo Antônio da Platina 41 km · Palmital 41 km · Carlópolis 52 km · Bandeirantes 53 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 Ourinhos (-22.9789°, -49.8706°, elevation 488 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).