Irati weather in September

In September, Irati sees average daytime highs of 23°C and overnight lows near 12°C, with 130 mm of rain across 10.8 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 5th-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 33% 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 Irati's 4th-clearest and 1st-windiest month. For the whole year in context, see Irati's year-round climate.

Daytime high
23°
8th warmest
Overnight low
12°
5th coldest
Rainfall
130 mm
10.8 wet days
Daylight
11 h 54 min
7:21 AM – 7:13 PM
Cloud cover
61%
4th clearest
Wind
10 km/h
1st windiest
Solar energy
4.43 kWh/m²
Travel score
6.6
out of 10

Irati is locality in Paraná state, 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 Irati reaches about 23°C in the afternoon and slips back to 12°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 29°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°151015202530
Avg high (°C)Avg low (°C)
12311
22311
32311
42311
52311
62312
72312
82312
92312
102312
112312
122312
132312
142312
152312
162312
172312
182312
192312
202312
212312
222313
232313
242313
252313
262313
272313
282313
292313
302313

Irati weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°17121.513.44.7
Feb27° / 18°14119.112.94.8
Mar26° / 17°9814.912.25.8
Apr24° / 14°72911.46.9
May21° / 11°978.810.86.5
Jun19° / 10°1048.810.46.3
Jul20° / 787.710.66.6
Aug22° / 10°777.311.17.2
Sep23° / 12°13010.811.86.6
Oct24° / 14°13215.212.65.9
Nov25° / 15°11113.913.26.0
Dec26° / 17°13717.613.65.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% 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 55%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16040
25941
35842
45743
55545
65347
75248
85248
95050
105050
114951
124852
134753
144654
154654
164555
174456
184357
194357
204258
214159
223961
233862
243862
253862
263664
273664
283565
293565
303466

Chance of precipitation in September

Any precipitation

Irati gets around 130 mm of rain over 10.8 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 35% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
125
225
326
427
527
628
729
830
930
1031
1132
1233
1333
1434
1535
1636
1736
1837
1938
2039
2140
2241
2341
2442
2543
2643
2744
2845
2945
3046

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 48% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1603460
2593470
3583570
4573580
5553690
6553690
75337100
85238100
95238100
105039110
114939111
124939111
134839121
144739121
154739131
164739141
174639141
184638151
194638151
204637161
214537171
224537181
234436191
244336201
254236211
264135231
274035241
283935251
293835261
303735281

Wind in September

Winds average 10 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 7:38 AM to 7:06 AM, and sunset from 7:07 PM to 7:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:387:07
211.57:377:07
311.57:367:07
411.57:357:08
511.67:347:08
611.67:337:09
711.67:327:09
811.67:307:09
911.77:297:10
1011.77:287:10
1111.77:277:11
1211.87:267:11
1311.87:257:11
1411.87:247:12
1511.87:227:12
1611.97:217:13
1711.97:207:13
1811.97:197:13
1911.97:187:14
2012.07:177:14
2112.07:167:14
2212.07:157:15
2312.07:137:15
2412.17:127:16
2512.17:117:16
2612.17:107:17
2712.17:097:17
2812.27:087:17
2912.27:077:18
3012.27:067:18

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.43 kWh/m².

For context, solar energy here swings from a low near 2.86 kWh/m² to a high of 5.75 kWh/m² in December across the year — September's 4.43 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.5Bright
Planning a trip in September

Is September a good time to visit Irati?

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

6.6
Sightseeing
3rd-best month of the year
5.0
Beach & pool
5th-best month of the year

September is a reasonable time to visit Irati for sightseeing.

What to pack for Irati in September

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

In September, Irati sees daytime highs around 23°C and nights near 12°C. Worth packing: light clothes and rain gear. About 11 days see rain.

light clothesrain gear

UV index in Irati 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 Irati peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 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 18UV 15Jul 13UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May6High
Jun6High
Jul5High
Aug6High
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Irati 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 Irati is worst in September — around 19 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (February, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1318 µg/m³Feb 196 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb6Good
Mar6Good
Apr7Good
May7Good
Jun8Good
Jul10Good
Aug15Moderate
Sep19Moderate
Oct11Good
Nov8Good
Dec6Good
Location & terrain

Where is Irati?

Irati sits at 25.5°S, 50.7°W, 848 m above sea level, in Brazil. The nearest listed city is Imbituva, 27 km away.

Topography around Irati

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

Within 3 km, the terrain around Irati has only modest variations in elevation — a maximum elevation change of 192 m around an average of 871 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 241 m; within 80 km, large variations in elevation — a maximum elevation change of 877 m.

The land around Irati is covered by trees (35%), artificial surfaces (30%) and cropland (20%) within 3 km, trees (53%) and cropland (38%) within 16 km, and trees (60%) and cropland (32%) within 80 km.

3 km
192 m
16 km
241 m
80 km
877 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Imbituva 27 km · Prudentópolis 43 km · São Mateus do Sul 53 km · Ponta Grossa 64 km · Palmeira 65 km · Três Barras 78 km · Guarapuava 82 km · Canoinhas 83 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 Irati (-25.4672°, -50.6511°, elevation 848 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).