Araguaína weather in September

In September, Araguaína sees average daytime highs of 35°C and overnight lows near 23°C, with 25 mm of rain across 3.9 wet days and about 12 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 58% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 54 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Araguaína's 4th-clearest and 4th-windiest month. For the whole year in context, see Araguaína's year-round climate.

Daytime high
35°
2nd warmest
Overnight low
23°
11th coldest
Rainfall
25 mm
3.9 wet days
Daylight
12 hours
6:08 AM – 6:06 PM
Cloud cover
40%
4th clearest
Wind
7 km/h
4th windiest
Solar energy
6.2 kWh/m²
Travel score
3.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 35°C through the month.

A typical September day in Araguaína reaches about 35°C in the afternoon and slips back to 23°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 37°C. Set against its neighbours, September runs on par with August and about 2°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13522
23522
33522
43523
53523
63523
73523
83523
93523
103523
113523
123523
133523
143523
153523
163523
173523
183523
193523
203523
213523
223423
233423
243423
253423
263423
273423
283423
293423
303423

How September really feels in Araguaína

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Araguaína weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°28728.512.42.8
Feb30° / 22°28526.112.22.7
Mar30° / 22°28628.2122.7
Apr31° / 22°19822.511.83.1
May32° / 22°861211.73.9
Jun33° / 22°81.411.64.4
Jul34° / 21°30.611.64.1
Aug35° / 22°30.811.83.3
Sep35° / 23°253.9123.1
Oct33° / 23°9413.512.23.4
Nov31° / 23°18720.812.33.2
Dec30° / 22°22925.212.43.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 58% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 23%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18614
28614
38614
48614
58416
68416
78416
88416
98317
108317
118218
128119
138020
147921
157921
167822
177723
187624
197525
207426
217327
227228
237129
247030
256931
266931
276931
286733
296733
306634

Chance of precipitation in September

Any precipitation

Araguaína gets around 25 mm of rain over 3.9 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 13% and peaks near 26% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
15
25
36
46
57
67
77
88
98
108
119
129
139
1410
1510
1611
1712
1813
1914
2015
2116
2217
2318
2419
2521
2622
2723
2824
2925
3026

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the muggy band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 63% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
121940309
2219393110
3219383111
4119373211
5119363212
6119353213
7119343313
8119333314
9118323315
10118313416
11117303417
12116293518
13215283619
14214273621
15213263722
16212253823
17211243825
18210233927
1929223929
2018204031
2117194033
2216184135
2315164137
2414154140
2513134142
2613124144
2702114046
2802104048
290193951
300183952

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over September. Sunrise moves from 6:17 AM to 6:00 AM, and sunset from 6:08 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:176:08
211.96:166:08
311.96:166:08
411.96:156:08
511.96:156:08
611.96:146:08
711.96:136:07
811.96:136:07
911.96:126:07
1011.96:126:07
1111.96:116:07
1211.96:116:07
1311.96:106:06
1411.96:096:06
1512.06:096:06
1612.06:086:06
1712.06:086:06
1812.06:076:06
1912.06:076:05
2012.06:066:05
2112.06:056:05
2212.06:056:05
2312.06:046:05
2412.06:046:05
2512.06:036:05
2612.06:036:04
2712.06:026:04
2812.06:026:04
2912.06:016:04
3012.16:006:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.2 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.59 kWh/m² to a high of 6.2 kWh/m² in September across the year — September's 6.2 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Araguaína

In seasonPeak

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

Araguaína's monsoon runs November–April, 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 Araguaína?

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

3.1
Sightseeing
7th-best month of the year
6.6
Beach & pool
4th-best month of the year

September is a weaker month for outdoor sightseeing in Araguaína. The water and warmth also suit a beach or pool day.

What to pack for Araguaína in September

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

In September, Araguaína sees daytime highs around 35°C and nights near 23°C. Pack light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in Araguaína in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Araguaína peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 12UV 15Jul 11UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug11Extreme
Sep11Extreme
Oct11Extreme
Nov11Extreme
Dec11Extreme

Air quality in Araguaína 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 Araguaína is worst in September — around 33 µg/m³ PM2.5 (moderate), about 5.0× the cleanest month (June, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateSep 2032 µg/m³Jun 237 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb11Good
Mar12Good
Apr12Good
May9Good
Jun7Good
Jul7Good
Aug17Moderate
Sep33Moderate
Oct27Moderate
Nov20Moderate
Dec16Moderate
Location & terrain

Where is Araguaína?

Araguaína sits at 7.2°S, 48.2°W, 237 m above sea level, in Brazil. The nearest listed city is Carolina, 84 km away.

Topography around Araguaína

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

Within 3 km, the terrain around Araguaína has only modest variations in elevation — a maximum elevation change of 85 m around an average of 236 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 140 m; within 80 km, significant variations in elevation — a maximum elevation change of 488 m.

The land around Araguaína is covered by artificial surfaces (67%) within 3 km, grassland (57%) and trees (35%) within 16 km, and grassland (57%) and trees (38%) within 80 km.

3 km
85 m
16 km
140 m
80 km
488 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Carolina 84 km · São Geraldo do Araguaia 96 km · Colinas do Tocantins 101 km · Estreito 110 km · Tocantinópolis 130 km · Porto Franco 130 km · Conceição do Araguaia 167 km · Floresta do Araguaia 171 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 Araguaína (-7.1911°, -48.2072°, elevation 237 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).