Barra weather in September

In September, Barra sees average daytime highs of 34°C and overnight lows near 21°C, with 2 mm of rain across 0.4 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 70% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 48 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's 2nd-clearest and 1st-windiest month. For the whole year in context, see Barra's year-round climate.

Daytime high
34°
2nd warmest
Overnight low
21°
4th coldest
Rainfall
2 mm
0.4 wet days
Daylight
11 h 54 min
5:49 AM – 5:45 PM
Cloud cover
29%
2nd clearest
Wind
13 km/h
1st windiest
Solar energy
6.72 kWh/m²
Travel score
3.6
out of 10

Barra 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 34°C through the month.

A typical September day in Barra reaches about 34°C in the afternoon and slips back to 21°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 36°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13420
23420
33420
43420
53421
63421
73421
83421
93421
103421
113421
123421
133421
143421
153421
163421
173521
183521
193522
203522
213522
223522
233522
243522
253522
263522
273522
283522
293522
303522

How September really feels in Barra

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 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
Jan32° / 23°11410.412.63.8
Feb32° / 23°8210.612.43.7
Mar32° / 23°9710.812.13.8
Apr32° / 22°486.311.84.2
May32° / 22°91.611.54.7
Jun32° / 20°0011.45.4
Jul31° / 19°0011.45.6
Aug33° / 19°0011.64.9
Sep34° / 21°20.411.93.6
Oct35° / 23°233.212.22.9
Nov33° / 23°928.612.53.4
Dec33° / 23°929.412.63.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 70% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 16%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18713
28614
38614
48614
58614
68614
78614
88614
98614
108614
118614
128713
138713
148614
158614
168614
178614
188614
198515
208416
218416
228416
238218
248218
258218
268020
278020
288020
297921
307921

Chance of precipitation in September

Any precipitation

Barra gets around 2 mm of rain over 0.4 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 1% and peaks near 3% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
111
121
131
141
151
161
171
181
192
202
212
222
232
242
252
262
273
283
293
303

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 62% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1296470
2296380
3286480
4286390
5286390
6276490
72763100
82763100
92664100
102664100
112663110
122564110
132564110
142464120
152464120
162364130
172363131
182264131
192263141
202262151
212163151
222162161
232061172
242060182
252060182
262059192
271959202
281959202
291958212
301958212

Wind in September

Winds average 13 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 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 18 minutes over September. Sunrise moves from 5:59 AM to 5:39 AM, and sunset from 5:46 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:595:46
211.85:585:46
311.85:575:46
411.85:575:46
511.85:565:46
611.85:555:46
711.85:555:46
811.95:545:46
911.95:535:45
1011.95:535:45
1111.95:525:45
1211.95:515:45
1311.95:515:45
1411.95:505:45
1511.95:495:45
1611.95:495:45
1711.95:485:45
1812.05:475:45
1912.05:475:45
2012.05:465:45
2112.05:455:45
2212.05:455:45
2312.05:445:45
2412.05:435:45
2512.05:435:45
2612.05:425:45
2712.15:415:45
2812.15:415:45
2912.15:405:45
3012.15:395:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.72 kWh/m².

For context, solar energy here swings from a low near 5.01 kWh/m² to a high of 6.83 kWh/m² in October across the year — September's 6.72 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.8Intense
226.8Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.9Intense
286.9Intense
296.9Intense
306.9Intense
Planning a trip in September

Hazard calendar for Barra

In seasonPeak

None of Barra'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's rainy season runs November–March, when most of the year's rain falls.

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

Is September a good time to visit Barra?

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

3.6
Sightseeing
10th-best month of the year
7.4
Beach & pool
5th-best month of the year

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

What to pack for Barra in September

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

In September, Barra sees daytime highs around 34°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Barra 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 peaks around February 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 21UV 15Jul 10UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov13Extreme
Dec12Extreme

Air quality in Barra 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 is worst in September — around 17 µg/m³ PM2.5 (moderate), about 6.6× the cleanest month (June, 3 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 2317 µg/m³Jun 163 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar6Good
Apr5Good
May4Good
Jun3Good
Jul4Good
Aug4Good
Sep17Moderate
Oct17Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Barra?

Barra sits at 11.1°S, 43.1°W, 411 m above sea level, in Brazil. The nearest listed city is Xique-Xique, 54 km away.

Topography around Barra

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

Within 3 km, the terrain around Barra has only modest variations in elevation — a maximum elevation change of 14 m around an average of 404 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 21 m; within 80 km, large variations in elevation — a maximum elevation change of 1,031 m.

The land around Barra is covered by grassland (34%) and shrubs (28%) within 3 km, shrubs (69%) within 16 km, and shrubs (73%) and trees (20%) within 80 km.

3 km
14 m
16 km
21 m
80 km
1,031 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Xique-Xique 54 km · Buritirama 68 km · Central 112 km · Ibotirama 122 km · Jussara 128 km · Presidente Dutra 128 km · Ibititá 137 km · Ibipeba 138 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 (-11.0894°, -43.1417°, elevation 411 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).