Pirajuí weather in September

In September, Pirajuí sees average daytime highs of 30°C and overnight lows near 18°C, with 61 mm of rain across 7.4 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 30°C through the month. The sky is clear or mostly clear about 56% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Pirajuí's 4th-clearest and 1st-windiest month. For the whole year in context, see Pirajuí's year-round climate.

Daytime high
30°
7th warmest
Overnight low
18°
5th coldest
Rainfall
61 mm
7.4 wet days
Daylight
11 h 54 min
7:16 AM – 7:08 PM
Cloud cover
42%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
5.58 kWh/m²
Travel score
5.7
out of 10

Pirajuí 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 30°C through the month.

A typical September day in Pirajuí reaches about 30°C in the afternoon and slips back to 18°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 24°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)
12917
22917
32917
42917
52917
63017
73017
83017
93017
103017
113017
123018
133018
143018
153018
163018
173018
183018
193018
203018
213018
223018
233018
243018
253018
263018
273018
283018
293018
303018

How September really feels in Pirajuí

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Pirajuí 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
Jan30° / 21°25022.213.23.6
Feb30° / 21°17618.612.83.7
Mar30° / 21°13917.112.24.3
Apr29° / 19°617.611.56.0
May26° / 16°565.7117.5
Jun26° / 15°37410.78.0
Jul26° / 14°233.210.88.2
Aug28° / 16°303.611.27.4
Sep30° / 18°617.411.95.7
Oct30° / 19°11312.512.54.6
Nov30° / 20°14715.113.14.2
Dec30° / 21°19519.613.33.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 10% of September, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17822
27624
37624
47525
57426
67327
77228
87129
97030
106931
116931
126733
136733
146634
156634
166535
176535
186436
196337
206238
216238
226139
235941
245842
255743
265743
275644
285545
295545
305446

Chance of precipitation in September

Any precipitation

Pirajuí gets around 61 mm of rain over 7.4 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 25% and peaks near 34% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
117
217
318
418
519
619
720
820
921
1021
1122
1222
1322
1423
1523
1624
1724
1825
1925
2026
2127
2228
2329
2430
2531
2632
2732
2833
2934
3034

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 34% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15230153
25229163
35229163
45029174
55028184
64928195
74728195
84628205
94528216
104329226
114129236
124030247
133830257
143631257
153532268
163332278
173133278
183034279
192834289
2027352810
2125352911
2224352912
2322352913
2421343015
2520343016
2619333018
2719323019
2818323020
2917313022
3017303023

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 36 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 36 minutes over September. Sunrise moves from 7:31 AM to 7:02 AM, and sunset from 7:04 PM to 7:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:317:04
211.67:307:04
311.67:297:05
411.67:287:05
511.67:277:05
611.77:267:06
711.77:257:06
811.77:247:06
911.77:237:06
1011.77:227:07
1111.87:217:07
1211.87:207:07
1311.87:197:08
1411.87:187:08
1511.97:177:08
1611.97:167:08
1711.97:157:09
1811.97:147:09
1911.97:137:09
2012.07:127:10
2112.07:117:10
2212.07:107:10
2312.07:097:10
2412.07:087:11
2512.17:077:11
2612.17:067:11
2712.17:057:12
2812.17:047:12
2912.27:037:12
3012.27:027:13

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.58 kWh/m².

For context, solar energy here swings from a low near 3.73 kWh/m² to a high of 6.08 kWh/m² in November across the year — September's 5.58 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.8Bright
305.8Bright
Planning a trip in September

Hazard calendar for Pirajuí

In seasonPeak

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

Pirajuí'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 Pirajuí?

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

5.7
Sightseeing
6th-best month of the year
7.6
Beach & pool
3rd-best month of the year

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

What to pack for Pirajuí in September

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

In September, Pirajuí sees daytime highs around 30°C and nights near 18°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Pirajuí 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 Pirajuí peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 21UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Pirajuí 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 Pirajuí is worst in September — around 22 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (November, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1422 µg/m³Nov 238 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar9Good
Apr10Good
May11Good
Jun11Good
Jul11Good
Aug18Moderate
Sep22Moderate
Oct15Moderate
Nov8Good
Dec8Good
Location & terrain

Where is Pirajuí?

Pirajuí sits at 22.0°S, 49.5°W, 499 m above sea level, in Brazil. The nearest listed city is Cafelândia, 27 km away.

Topography around Pirajuí

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

Within 3 km, the terrain around Pirajuí has only modest variations in elevation — a maximum elevation change of 117 m around an average of 506 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 213 m; within 80 km, significant variations in elevation — a maximum elevation change of 362 m.

The land around Pirajuí is covered by trees (33%), grassland (30%) and cropland (21%) within 3 km, cropland (43%), trees (31%) and grassland (26%) within 16 km, and cropland (49%) and trees (29%) within 80 km.

3 km
117 m
16 km
213 m
80 km
362 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Cafelândia 27 km · Garça 31 km · Lins 46 km · Bauru 54 km · Marília 56 km · Piratininga 57 km · Novo Horizonte 64 km · Promissão 66 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 Pirajuí (-21.9986°, -49.4572°, elevation 499 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).