Conceição da Barra weather in September

In September, Conceição da Barra sees average daytime highs of 25°C and overnight lows near 22°C, with 53 mm of rain across 10.2 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 47% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Conceição da Barra's 4th-clearest and 3rd-windiest month. For the whole year in context, see Conceição da Barra's year-round climate.

Daytime high
25°
9th warmest
Overnight low
22°
4th coldest
Rainfall
53 mm
10.2 wet days
Daylight
11 h 54 min
6:36 AM – 6:30 PM
Cloud cover
47%
4th clearest
Wind
18 km/h
3rd windiest
Solar energy
5.28 kWh/m²
Travel score
7.0
out of 10

Conceição da Barra is 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 25°C through the month.

A typical September day in Conceição da Barra reaches about 25°C in the afternoon and slips back to 22°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12521
22521
32521
42521
52521
62521
72521
82521
92521
102521
112521
122522
132522
142522
152522
162522
172522
182522
192522
202522
212522
222522
232522
242522
252622
262622
272622
282622
292622
302622

Conceição da Barra weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°9212.2135.9
Feb28° / 25°7012.212.65.5
Mar28° / 24°13017.212.15.2
Apr27° / 24°10517.111.65.5
May26° / 22°7213.811.16.3
Jun25° / 21°5411.810.96.8
Jul24° / 21°6013.2116.8
Aug24° / 21°4910.911.47.1
Sep25° / 22°5310.211.97.0
Oct26° / 23°9212.212.46.4
Nov27° / 23°17316.412.95.5
Dec28° / 24°13914.713.15.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% 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 31%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27822
37822
47822
57822
67723
77723
87723
97624
107624
117525
127426
137327
147129
157030
166931
176832
186733
196634
206436
216436
226238
236238
246040
256040
265941
275941
285842
295743
305743

Chance of precipitation in September

Any precipitation

Conceição da Barra gets around 53 mm of rain over 10.2 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 34% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
130
231
331
431
532
632
733
834
934
1035
1135
1235
1335
1435
1535
1635
1735
1835
1935
2034
2134
2234
2334
2434
2534
2634
2734
2834
2934
3035

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 65% of days. Sticky, muggy-or-worse air turns up on roughly 75% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1722656
2722656
3722656
4722656
5723646
6723646
7722656
8722656
9722647
10721657
11721657
12621667
13620677
14520687
15520678
16519688
17519688
18419689
19418699
204186810
214186810
224186711
234186612
244176613
254176514
264176415
274176316
284176217
294176019
304166020

Wind in September

Winds average 18 km/h in September.

Across September, daily wind ranges from about 17 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1919light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 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 30 minutes over September. Sunrise moves from 6:50 AM to 6:24 AM, and sunset from 6:28 PM to 6:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:506:28
211.66:496:28
311.76:486:28
411.76:476:28
511.76:466:28
611.76:456:28
711.76:456:29
811.86:446:29
911.86:436:29
1011.86:426:29
1111.86:416:29
1211.86:406:29
1311.86:396:30
1411.96:386:30
1511.96:376:30
1611.96:366:30
1711.96:356:30
1811.96:356:30
1912.06:346:31
2012.06:336:31
2112.06:326:31
2212.06:316:31
2312.06:306:31
2412.06:296:32
2512.16:286:32
2612.16:276:32
2712.16:266:32
2812.16:266:32
2912.16:256:33
3012.16:246:33

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.28 kWh/m².

For context, solar energy here swings from a low near 3.78 kWh/m² to a high of 6.66 kWh/m² in January across the year — September's 5.28 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Is September a good time to visit Conceição da Barra?

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

7.0
Sightseeing
2nd-best month of the year
6.4
Beach & pool
3rd-best month of the year

September is one of the better times to visit Conceição da Barra for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Conceição da Barra in September

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

In September, Conceição da Barra sees daytime highs around 25°C and nights near 22°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Conceição da Barra in September

The nearest coast averages about 25°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in March at about 28°C and coldest in August near 24°C.

The water stays above 20°C all year — warm enough for a swim any month.

22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar28Warm
Apr27Warm
May26Warm
Jun25Warm
Jul24Warm
Aug24Warm
Sep25Warm
Oct25Warm
Nov26Warm
Dec26Warm

UV index in Conceição da Barra in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Conceição da Barra peaks around February 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 14UV 14Jun 20UV 7
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7Very high
Aug9Very high
Sep10Extreme
Oct12Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Conceição da Barra?

Conceição da Barra sits at 18.6°S, 39.7°W, 8 m above sea level, in Brazil. The nearest listed city is São Mateus, 19 km away.

Topography around Conceição da Barra

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

Within 3 km, the terrain around Conceição da Barra has only modest variations in elevation — a maximum elevation change of 23 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 71 m; within 80 km, large variations in elevation — a maximum elevation change of 609 m.

The land around Conceição da Barra is covered by water (52%) and mangroves (23%) within 3 km, water (51%) and trees (33%) within 16 km, and trees (34%), grassland (32%) and water (30%) within 80 km.

3 km
23 m
16 km
71 m
80 km
609 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: São Mateus 19 km · Jaguaré 50 km · Pinheiros 56 km · Mucuri 60 km · Nova Venécia 72 km · Pedro Canário 77 km · Sooretama 77 km · Posto da Mata 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 Conceição da Barra (-18.5933°, -39.7322°, elevation 8 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).