Barra do Garças weather in September

In September, Barra do Garças sees average daytime highs of 35°C and overnight lows near 22°C, with 30 mm of rain across 5.4 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 35°C through the month. The sky is clear or mostly clear about 54% of the time in September, and the air most often feels muggy.

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 Barra do Garças's 4th-clearest and 2nd-windiest month. For the whole year in context, see Barra do Garças's year-round climate.

Daytime high
35°
1st warmest
Overnight low
22°
6th coldest
Rainfall
30 mm
5.4 wet days
Daylight
11 h 54 min
6:26 AM – 6:21 PM
Cloud cover
40%
4th clearest
Wind
7 km/h
2nd windiest
Solar energy
6.02 kWh/m²
Travel score
3.0
out of 10

Barra do Garças 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 35°C through the month.

A typical September day in Barra do Garças reaches about 35°C in the afternoon and slips back to 22°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 38°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C warmer than October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13521
23521
33521
43521
53521
63521
73521
83521
93521
103521
113522
123522
133522
143522
153522
163522
173522
183522
193522
203522
213522
223522
233522
243522
253522
263522
273522
283522
293523
303523

How September really feels in Barra do Garças

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.

Barra do Garças 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
Jan30° / 22°29624.412.83.1
Feb31° / 22°2302212.53.1
Mar31° / 22°19022.612.13.2
Apr31° / 22°7011.611.74.1
May31° / 20°132.611.35.2
Jun31° / 18°30.611.15.7
Jul32° / 18°10.311.25.6
Aug34° / 19°40.611.54.2
Sep35° / 22°305.411.93.0
Oct34° / 23°9915.512.42.7
Nov31° / 22°20822.712.72.9
Dec30° / 22°29125.312.93.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% 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 27%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18317
28218
38218
48119
58119
68119
78119
88020
97921
107921
117921
127723
137723
147723
157525
167525
177426
187327
197129
207129
216931
226832
236634
246535
256337
266238
276139
286040
295941
305842

Chance of precipitation in September

Any precipitation

Barra do Garças gets around 30 mm of rain over 5.4 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 19% 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 (%)
17
27
38
48
59
69
710
810
911
1012
1113
1214
1315
1416
1517
1618
1719
1820
1921
2022
2124
2225
2326
2427
2529
2630
2731
2832
2933
3034

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 25% of days. Sticky, muggy-or-worse air turns up on roughly 30% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1412917120
2412817131
3412717141
4412718141
5402618151
6402618161
7392518162
8382519172
9362519172
10352520182
11332521182
12312622193
13292623203
14272623203
15252624214
16232525224
17212526244
18192427255
19172427265
20162328286
21142229296
22132029317
23111929338
24101729349
25916293610
26915283810
27814274011
28713274112
29712264213
30711254315

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
286calm
296calm
306calm

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 6:38 AM to 6:15 AM, and sunset from 6:19 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:386:19
211.76:376:19
311.76:376:20
411.76:366:20
511.76:356:20
611.86:346:20
711.86:336:20
811.86:336:20
911.86:326:20
1011.86:316:20
1111.86:306:20
1211.96:296:20
1311.96:286:20
1411.96:286:21
1511.96:276:21
1611.96:266:21
1711.96:256:21
1811.96:246:21
1912.06:236:21
2012.06:236:21
2112.06:226:21
2212.06:216:21
2312.06:206:21
2412.06:196:21
2512.06:196:22
2612.16:186:22
2712.16:176:22
2812.16:166:22
2912.16:156:22
3012.16:156:22

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.02 kWh/m².

For context, solar energy here swings from a low near 4.56 kWh/m² to a high of 6.14 kWh/m² in October across the year — September's 6.02 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
86.0Bright
96.0Bright
106.0Bright
116.0Bright
126.0Bright
136.0Intense
146.0Intense
156.0Intense
166.0Intense
176.0Intense
186.0Intense
196.0Intense
206.0Intense
216.0Intense
226.0Intense
236.0Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Barra do Garças

In seasonPeak

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

Barra do Garças'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 Barra do Garças?

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

3.0
Sightseeing
9th-best month of the year
6.3
Beach & pool
6th-best month of the year

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

What to pack for Barra do Garças in September

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

In September, Barra do Garças sees daytime highs around 35°C and nights near 22°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Barra do Garças 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 Barra do Garças peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 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 highExtremeJan 22UV 15Jun 22UV 8
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep12Extreme
Oct12Extreme
Nov14Extreme
Dec13Extreme

Air quality in Barra do Garças 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 Barra do Garças is worst in September — around 34 µg/m³ PM2.5 (moderate), about 8.1× the cleanest month (July, 4 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1731 µg/m³Jul 114 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar9Good
Apr8Good
May6Good
Jun6Good
Jul4Good
Aug12Moderate
Sep34Moderate
Oct15Moderate
Nov8Good
Dec8Good
Location & terrain

Where is Barra do Garças?

Barra do Garças sits at 15.9°S, 52.3°W, 302 m above sea level, in Brazil. The nearest listed city is Aragarças, 1.0 km away.

Topography around Barra do Garças

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

Within 3 km, the terrain around Barra do Garças has significant variations in elevation — a maximum elevation change of 378 m around an average of 358 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 487 m; within 80 km, large variations in elevation — a maximum elevation change of 753 m.

The land around Barra do Garças is covered by trees (41%) and artificial surfaces (36%) within 3 km, trees (41%) and grassland (40%) within 16 km, and grassland (52%) and trees (31%) within 80 km.

3 km
378 m
16 km
487 m
80 km
753 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Aragarças 1.0 km · Caiapônia 128 km · Iporá 136 km · Nova Xavantina 137 km · Jussara 149 km · Campinápolis 161 km · Alto Araguaia 188 km · Mineiros 189 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 Barra do Garças (-15.89°, -52.2567°, elevation 302 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).