Araçatuba weather in September

In September, Araçatuba sees average daytime highs of 31°C and overnight lows near 19°C, with 61 mm of rain across 7.1 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 31°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 Araçatuba's 4th-clearest and 1st-windiest month. For the whole year in context, see Araçatuba's year-round climate.

Daytime high
31°
2nd warmest
Overnight low
19°
5th coldest
Rainfall
61 mm
7.1 wet days
Daylight
11 h 54 min
7:20 AM – 7:12 PM
Cloud cover
41%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
5.66 kWh/m²
Travel score
4.9
out of 10

Araçatuba is human settlement in Brazil.

Air quality
Good
PM10 26.4 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 31°C through the month.

A typical September day in Araçatuba reaches about 31°C in the afternoon and slips back to 19°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 36°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13118
23118
33118
43118
53118
63119
73119
83119
93119
103119
113119
123119
133119
143119
153119
163119
173119
183119
193119
203119
213119
223119
233119
243119
253119
263119
273120
283120
293120
303120

How September really feels in Araçatuba

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.

Araçatuba 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
Jan31° / 22°25622.413.13.3
Feb31° / 22°18519.112.73.5
Mar31° / 22°14818.312.13.9
Apr30° / 20°607.811.55.5
May27° / 17°485.8117.2
Jun27° / 16°303.610.77.8
Jul28° / 16°202.510.87.8
Aug30° / 17°222.911.36.3
Sep31° / 19°617.111.94.9
Oct32° / 21°10712.112.54.0
Nov31° / 21°14915.5133.7
Dec31° / 22°1882113.33.4

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 11% 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 (%)
17822
27822
37624
47624
57525
67327
77327
87129
97030
107030
116931
126832
136832
146733
156634
166535
176535
186436
196436
206337
216337
226238
236139
246040
255941
265842
275842
285644
295644
305644

Chance of precipitation in September

Any precipitation

Araçatuba gets around 61 mm of rain over 7.1 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 24% 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 (%)
114
215
316
416
517
618
718
819
919
1020
1120
1220
1321
1421
1522
1623
1723
1824
1925
2026
2127
2228
2329
2430
2531
2632
2732
2833
2933
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 17% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
155241560
253241670
353241670
452231780
551231880
650231890
7482319100
8472320100
9452321110
10442321110
11422322120
12402423120
13382424130
14372525130
15352526140
16332626150
17312627150
18302727160
19282727170
20262828181
21252828191
22232828211
23222828221
24202728241
25192727251
26182727272
27172627282
28162626292
29152526313
30152426323

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 7:34 AM to 7:06 AM, and sunset from 7:09 PM to 7:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:347:09
211.67:337:09
311.67:327:09
411.67:317:09
511.77:307:10
611.77:307:10
711.77:297:10
811.77:287:10
911.77:277:11
1011.87:267:11
1111.87:257:11
1211.87:247:11
1311.87:237:12
1411.87:227:12
1511.97:217:12
1611.97:207:12
1711.97:197:13
1811.97:187:13
1911.97:177:13
2012.07:167:13
2112.07:157:14
2212.07:147:14
2312.07:137:14
2412.07:127:15
2512.17:117:15
2612.17:107:15
2712.17:097:15
2812.17:087:16
2912.27:077:16
3012.27:067:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.66 kWh/m².

For context, solar energy here swings from a low near 3.81 kWh/m² to a high of 6.15 kWh/m² in November across the year — September's 5.66 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
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.9Bright
Planning a trip in September

Hazard calendar for Araçatuba

In seasonPeak

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

Araçatuba'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 Araçatuba?

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

4.9
Sightseeing
6th-best month of the year
7.3
Beach & pool
6th-best month of the year

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

What to pack for Araçatuba in September

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

In September, Araçatuba sees daytime highs around 31°C and nights near 19°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Araçatuba 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 Araçatuba peaks around January 22 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 22UV 15Jun 23UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct10Extreme
Nov13Extreme
Dec13Extreme

Air quality in Araçatuba 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 Araçatuba is worst in September — around 21 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (November, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1620 µg/m³Nov 227 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr9Good
May9Good
Jun9Good
Jul8Good
Aug13Moderate
Sep21Moderate
Oct13Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Araçatuba?

Araçatuba sits at 21.2°S, 50.4°W, 392 m above sea level, in Brazil. The nearest listed city is Birigui, 13 km away.

Topography around Araçatuba

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

Within 3 km, the terrain around Araçatuba has only modest variations in elevation — a maximum elevation change of 81 m around an average of 385 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 170 m; within 80 km, significant variations in elevation — a maximum elevation change of 271 m.

The land around Araçatuba is covered by artificial surfaces (68%) within 3 km, cropland (53%) and grassland (27%) within 16 km, and cropland (56%) and grassland (27%) within 80 km.

3 km
81 m
16 km
170 m
80 km
271 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Birigui 13 km · Guararapes 23 km · Buritama 34 km · Penápolis 44 km · Valparaíso 45 km · Promissão 70 km · Mirandópolis 70 km · Osvaldo Cruz 80 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 Araçatuba (-21.2089°, -50.4328°, elevation 392 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).