Araraquara weather in September

In September, Araraquara sees average daytime highs of 30°C and overnight lows near 18°C, with 67 mm of rain across 7.5 wet days and about 11.9 hours of daylight. It is the 2nd-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 55% 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 Araraquara's 4th-clearest and 1st-windiest month. For the whole year in context, see Araraquara's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
18°
5th coldest
Rainfall
67 mm
7.5 wet days
Daylight
11 h 54 min
7:11 AM – 7:03 PM
Cloud cover
42%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
5.61 kWh/m²
Travel score
5.6
out of 10

Araraquara is human settlement in Brazil.

Air quality
Good
PM10 25 µg/m³ · 2019

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 Araraquara 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 on par with October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13017
23017
33017
43017
53017
63017
73017
83017
93017
103018
113018
123018
133018
143018
153018
163018
173018
183018
193018
203018
213018
223018
233018
243018
253018
263018
273018
283018
293018
303018

Araraquara weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°26522.413.23.7
Feb30° / 21°18518.212.73.9
Mar30° / 20°16317.812.24.3
Apr29° / 19°648.211.56.0
May26° / 16°566.1117.4
Jun26° / 15°353.410.78.1
Jul26° / 15°253.210.88.1
Aug28° / 16°263.311.37.3
Sep30° / 18°677.511.95.6
Oct30° / 19°11512.812.54.6
Nov30° / 20°17016.2134.3
Dec30° / 21°2142113.33.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% 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 34%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17723
27723
37723
47525
57525
67426
77327
87228
97129
107030
117030
126832
136832
146733
156634
166535
176535
186436
196337
206337
216139
226040
235941
245842
255842
265743
275644
285545
295545
305446

Chance of precipitation in September

Any precipitation

Araraquara gets around 67 mm of rain over 7.5 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 35% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
115
216
316
417
517
618
719
819
920
1021
1121
1222
1323
1424
1525
1625
1726
1827
1928
2029
2129
2230
2331
2432
2532
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 39% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16025132
25925142
35925142
45626153
55526163
65426173
75227183
85127184
94928194
104728204
114529214
124430225
134230235
144031235
153932246
163732256
173633256
183433267
193333268
203133278
213033279
2228332810
2327332812
2426332913
2525322914
2624312916
2723313017
2822303018
2921293020
3020293121

Wind in September

Winds average 11 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 10 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
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3010calm

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 7:26 AM to 6:57 AM, and sunset from 6:59 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:266:59
211.67:256:59
311.67:247:00
411.67:237:00
511.67:227:00
611.77:217:01
711.77:207:01
811.77:197:01
911.77:187:01
1011.77:177:02
1111.87:167:02
1211.87:157:02
1311.87:147:03
1411.87:137:03
1511.97:127:03
1611.97:117:03
1711.97:107:04
1811.97:097:04
1911.97:087:04
2012.07:077:04
2112.07:067:05
2212.07:057:05
2312.07:047:05
2412.07:037:06
2512.17:027:06
2612.17:017:06
2712.17:007:06
2812.16:597:07
2912.26:587:07
3012.26:577:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.61 kWh/m².

For context, solar energy here swings from a low near 3.82 kWh/m² to a high of 5.96 kWh/m² in November across the year — September's 5.61 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.7Bright
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 Araraquara

In seasonPeak

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

Araraquara's monsoon runs November–March, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Araraquara?

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

5.6
Sightseeing
6th-best month of the year
7.5
Beach & pool
4th-best month of the year

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

What to pack for Araraquara in September

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

In September, Araraquara sees daytime highs around 30°C and nights near 18°C. Pack light clothes. Worth having: sun protection. About 8 days see rain.

light clothessun protection

UV index in Araraquara 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 Araraquara peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 20UV 15Jun 23UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Araraquara 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 Araraquara is worst in September — around 37 µg/m³ PM2.5 (poor), about 3.6× the cleanest month (November, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateGoodSep 1037 µg/m³Nov 2310 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Moderate
Mar13Moderate
Apr14Moderate
May16Moderate
Jun17Moderate
Jul18Moderate
Aug35Poor
Sep37Poor
Oct18Moderate
Nov10Good
Dec11Good
Location & terrain

Where is Araraquara?

Araraquara sits at 21.8°S, 48.2°W, 677 m above sea level, in Brazil. The nearest listed city is Américo Brasiliense, 11 km away.

Topography around Araraquara

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

Within 3 km, the terrain around Araraquara has only modest variations in elevation — a maximum elevation change of 132 m around an average of 658 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 292 m; within 80 km, large variations in elevation — a maximum elevation change of 680 m.

The land around Araraquara is covered by artificial surfaces (73%) within 3 km, cropland (58%) and trees (21%) within 16 km, and cropland (59%) and trees (27%) within 80 km.

3 km
132 m
16 km
292 m
80 km
680 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Américo Brasiliense 11 km · Ibaté 26 km · Matão 29 km · São Carlos 38 km · Guariba 49 km · Pradópolis 50 km · Brotas 55 km · Taquaritinga 55 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 Araraquara (-21.7944°, -48.1756°, elevation 677 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).