Itaí weather in September

In September, Itaí sees average daytime highs of 26°C and overnight lows near 15°C, with 90 mm of rain across 8.8 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 26°C through the month. The sky is clear or mostly clear about 41% 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 Itaí's 4th-clearest and 1st-windiest month. For the whole year in context, see Itaí's year-round climate.

Daytime high
26°
8th warmest
Overnight low
15°
5th coldest
Rainfall
90 mm
8.8 wet days
Daylight
11 h 54 min
7:15 AM – 7:07 PM
Cloud cover
53%
4th clearest
Wind
12 km/h
1st windiest
Solar energy
4.97 kWh/m²
Travel score
7.0
out of 10

Itaí 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 26°C through the month.

A typical September day in Itaí reaches about 26°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 32°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12614
22614
32614
42614
52614
62615
72615
82615
92615
102615
112615
122615
132615
142615
152615
162615
172615
182615
192615
202615
212615
222615
232615
242615
252615
262616
272616
282616
292616
302616

Itaí 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
Jan29° / 20°23421.813.34.0
Feb29° / 20°17218.912.84.1
Mar28° / 19°12516.312.25.1
Apr27° / 17°617.511.56.9
May24° / 15°687.210.97.3
Jun23° / 13°585.910.67.6
Jul23° / 13°504.910.77.8
Aug25° / 13°46511.28.0
Sep26° / 15°908.811.97.0
Oct27° / 17°11411.912.56.1
Nov28° / 18°13414.113.15.6
Dec28° / 19°16617.913.44.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% 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 47%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16733
26634
36535
46436
56238
66139
75941
85842
95743
105644
115545
125446
135446
145347
155347
165248
175248
185248
195050
205050
214951
224951
234753
244555
254555
264456
274357
284258
294258
304159

Chance of precipitation in September

Any precipitation

Itaí gets around 90 mm of rain over 8.8 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 29% and peaks near 38% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
120
221
321
422
523
623
724
824
925
1025
1126
1226
1327
1427
1528
1628
1729
1830
1930
2031
2132
2233
2334
2434
2535
2636
2736
2837
2937
3038

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 42% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14343141
24243141
34143151
44142161
54042171
63942181
73842181
83742191
93643201
103543202
113444212
123344212
133245222
143145222
153045232
162945232
172845242
182845243
192745253
202744254
212643264
222643275
232542286
242441287
252440298
262339309
272238309
2822373110
2921363211
3020363211

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
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512light breeze
1612light breeze
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 7:30 AM to 7:00 AM, and sunset from 7:02 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:307:02
211.57:297:02
311.67:287:02
411.67:277:03
511.67:267:03
611.67:257:03
711.77:247:04
811.77:237:04
911.77:227:04
1011.77:217:05
1111.87:207:05
1211.87:197:05
1311.87:187:06
1411.87:177:06
1511.87:167:06
1611.97:157:07
1711.97:147:07
1811.97:137:07
1911.97:117:08
2012.07:107:08
2112.07:097:08
2212.07:087:09
2312.07:077:09
2412.17:067:09
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 4.97 kWh/m².

For context, solar energy here swings from a low near 3.25 kWh/m² to a high of 5.82 kWh/m² in December across the year — September's 4.97 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.1Bright
Planning a trip in September

Hazard calendar for Itaí

In seasonPeak

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

Itaí'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 Itaí?

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

7.0
Sightseeing
5th-best month of the year
6.6
Beach & pool
3rd-best month of the year

September is one of the better times to visit Itaí for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Itaí in September

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

In September, Itaí sees daytime highs around 26°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Itaí 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 Itaí peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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 21UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Itaí 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 Itaí is worst in September — around 16 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (March, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1416 µg/m³Mar 158 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr9Good
May10Good
Jun10Good
Jul11Good
Aug14Moderate
Sep16Moderate
Oct13Moderate
Nov8Good
Dec8Good
Location & terrain

Where is Itaí?

Itaí sits at 23.4°S, 49.1°W, 616 m above sea level, in Brazil. The nearest listed city is Taquarituba, 20 km away.

Topography around Itaí

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

Within 3 km, the terrain around Itaí has only modest variations in elevation — a maximum elevation change of 167 m around an average of 634 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 232 m; within 80 km, large variations in elevation — a maximum elevation change of 695 m.

The land around Itaí is covered by cropland (38%), grassland (25%) and trees (24%) within 3 km, cropland (47%) and trees (24%) within 16 km, and cropland (39%), trees (37%) and grassland (20%) within 80 km.

3 km
167 m
16 km
232 m
80 km
695 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Taquarituba 20 km · Paranapanema 38 km · Piraju 39 km · Avaré 39 km · Fartura 43 km · Cerqueira César 43 km · Itaberá 50 km · Itatinga 60 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 Itaí (-23.4178°, -49.0906°, elevation 616 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).