São Miguel do Araguaia weather in September

In September, São Miguel do Araguaia sees average daytime highs of 36°C and overnight lows near 24°C, with 22 mm of rain across 3.7 wet days and about 11.9 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 36°C through the month. The sky is clear or mostly clear about 51% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is São Miguel do Araguaia's 4th-clearest and 3rd-windiest month. For the whole year in context, see São Miguel do Araguaia's year-round climate.

Daytime high
36°
1st warmest
Overnight low
24°
11th coldest
Rainfall
22 mm
3.7 wet days
Daylight
11 h 54 min
7:17 AM – 7:13 PM
Cloud cover
42%
4th clearest
Wind
8 km/h
3rd windiest
Solar energy
6.03 kWh/m²
Travel score
2.3
out of 10

São Miguel do Araguaia 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 36°C through the month.

A typical September day in São Miguel do Araguaia reaches about 36°C in the afternoon and slips back to 24°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 39°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13623
23623
33623
43623
53623
63623
73623
83624
93624
103624
113624
123624
133624
143624
153624
163624
173624
183624
193624
203624
213624
223624
233624
243624
253624
263624
273624
283624
293524
303524

How September really feels in São Miguel do Araguaia

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.

São Miguel do Araguaia weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°30726.612.72.9
Feb31° / 23°24923.912.42.8
Mar31° / 23°24025.412.12.9
Apr32° / 23°12716.711.73.4
May33° / 22°213.811.44.3
Jun33° / 21°20.311.24.6
Jul33° / 20°0011.34.5
Aug35° / 22°20.411.63.3
Sep36° / 24°223.711.92.3
Oct34° / 24°11615.712.32.5
Nov32° / 23°23722.812.62.8
Dec31° / 23°26825.412.82.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18218
28218
38119
48119
58020
68020
77921
87822
97822
107723
117624
127624
137525
147525
157525
167525
177426
187327
197327
207228
217129
227030
236931
246733
256634
266634
276436
286238
296238
306040

Chance of precipitation in September

Any precipitation

São Miguel do Araguaia gets around 22 mm of rain over 3.7 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 31% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
14
24
35
45
55
66
76
86
97
107
117
128
138
149
1510
1610
1711
1812
1914
2015
2116
2218
2319
2421
2523
2625
2726
2828
2930
3031

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 28% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
142301791
243301791
3422917102
4422817102
5422817102
6422816113
7422816113
8412816113
9412816124
10402816124
11392816134
12372816135
13362817145
14342817156
15332818156
16312719167
17292720178
18272621189
192525221910
202324222011
212023232113
221821242314
231620242416
241419242617
251318242719
261116232821
271015232923
28914223025
29813223127
30712213128

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 42 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 24 minutes over September. Sunrise moves from 7:28 AM to 7:07 AM, and sunset from 7:13 PM to 7:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.77:287:13
211.87:277:13
311.87:277:13
411.87:267:13
511.87:257:13
611.87:257:13
711.87:247:13
811.87:237:13
911.87:227:13
1011.97:227:13
1111.97:217:13
1211.97:207:13
1311.97:197:13
1411.97:197:13
1511.97:187:13
1611.97:177:13
1711.97:167:13
1812.07:167:13
1912.07:157:13
2012.07:147:13
2112.07:137:13
2212.07:137:13
2312.07:127:13
2412.07:117:13
2512.07:107:13
2612.17:107:13
2712.17:097:13
2812.17:087:13
2912.17:087:13
3012.17:077:13

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.03 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.73 kWh/m² to a high of 6.03 kWh/m² in September across the year — September's 6.03 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
66.0Bright
76.0Bright
86.0Intense
96.0Intense
106.0Intense
116.0Intense
126.0Intense
136.0Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.0Intense
226.0Intense
236.0Intense
246.0Intense
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.0Intense
306.0Intense
Planning a trip in September

Hazard calendar for São Miguel do Araguaia

In seasonPeak

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

São Miguel do Araguaia'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 São Miguel do Araguaia?

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

2.3
Sightseeing
12th-best month of the year
5.6
Beach & pool
5th-best month of the year

September is a weaker month for outdoor sightseeing in São Miguel do Araguaia.

What to pack for São Miguel do Araguaia in September

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

In September, São Miguel do Araguaia sees daytime highs around 36°C and nights near 24°C. Pack light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in São Miguel do Araguaia in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São Miguel do Araguaia peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 15UV 15Jul 11UV 8
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct11Extreme
Nov13Extreme
Dec12Extreme

Air quality in São Miguel do Araguaia 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 São Miguel do Araguaia is worst in September — around 24 µg/m³ PM2.5 (moderate), about 8.8× the cleanest month (July, 3 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 2123 µg/m³Jul 123 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar8Good
Apr7Good
May5Good
Jun3Good
Jul3Good
Aug6Good
Sep24Moderate
Oct21Moderate
Nov9Good
Dec8Good
Location & terrain

Where is São Miguel do Araguaia?

São Miguel do Araguaia sits at 13.3°S, 50.2°W, 336 m above sea level, in Brazil. The nearest listed city is Porangatu, 111 km away.

Topography around São Miguel do Araguaia

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Miguel do Araguaia.

Within 3 km, the terrain around São Miguel do Araguaia has only modest variations in elevation — a maximum elevation change of 88 m around an average of 340 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 214 m; within 80 km, significant variations in elevation — a maximum elevation change of 523 m.

The land around São Miguel do Araguaia is covered by grassland (60%) and trees (20%) within 3 km, grassland (70%) and trees (27%) within 16 km, and grassland (59%) and trees (32%) within 80 km.

3 km
88 m
16 km
214 m
80 km
523 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Porangatu 111 km · Crixás 143 km · Uruaçu 177 km · Formoso do Araguaia 178 km · Itapaci 198 km · Gurupi 209 km · Minaçu 212 km · Rubiataba 214 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 São Miguel do Araguaia (-13.275°, -50.1628°, elevation 336 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).