Congonhas weather in September

In September, Congonhas sees average daytime highs of 25°C and overnight lows near 14°C, with 75 mm of rain across 8.8 wet days and about 11.9 hours of daylight. It is the 6th-warmest and 8th-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 40% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Congonhas's 4th-clearest and 1st-windiest month. For the whole year in context, see Congonhas's year-round climate.

Daytime high
25°
6th warmest
Overnight low
14°
5th coldest
Rainfall
75 mm
8.8 wet days
Daylight
11 h 54 min
6:53 AM – 6:46 PM
Cloud cover
53%
4th clearest
Wind
9 km/h
1st windiest
Solar energy
5.24 kWh/m²
Travel score
7.1
out of 10

Congonhas 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 25°C through the month.

A typical September day in Congonhas reaches about 25°C in the afternoon and slips back to 14°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 29°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12513
22513
32513
42513
52513
62513
72513
82513
92513
102513
112513
122513
132514
142514
152514
162514
172514
182514
192514
202514
212514
222514
232514
242514
252514
262514
272515
282515
292515
302515

Congonhas weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°26420.613.14.8
Feb27° / 18°16915.812.75.3
Mar26° / 17°21119.812.15.1
Apr25° / 16°8713.111.56.3
May23° / 13°437.2117.2
Jun22° / 12°162.810.87.9
Jul22° / 11°92.410.98.2
Aug24° / 12°213.811.38.2
Sep25° / 14°758.811.97.1
Oct25° / 16°12414.812.55.9
Nov25° / 17°24721.6134.7
Dec26° / 18°30524.713.24.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 44%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17228
27228
37129
47129
57030
66931
76832
86733
96634
106436
116337
126040
135941
145743
155644
165545
175446
185248
195149
204951
214753
224654
234654
244555
254456
264456
274357
284258
294159
304159

Chance of precipitation in September

Any precipitation

Congonhas gets around 75 mm of rain over 8.8 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 29% and peaks near 43% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
118
219
319
419
520
620
720
821
922
1022
1123
1224
1325
1426
1527
1628
1730
1831
1932
2034
2135
2236
2338
2439
2540
2641
2742
2842
2943
3043

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 45% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1633250
2623260
3623260
4613270
5603370
6593380
7583480
8573490
95535100
105336110
115137120
125037130
134838140
144639150
154439160
164340170
174140180
184041190
193841200
203741220
213641230
223541240
233441251
243340271
253240281
263140291
273039301
282939311
292839331
302739341

Wind in September

Winds average 9 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 9 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
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over September. Sunrise moves from 7:07 AM to 6:40 AM, and sunset from 6:43 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:076:43
211.67:076:43
311.67:066:43
411.67:056:44
511.77:046:44
611.77:036:44
711.77:026:44
811.77:016:44
911.77:006:45
1011.86:596:45
1111.86:586:45
1211.86:576:45
1311.86:566:46
1411.86:556:46
1511.96:546:46
1611.96:536:46
1711.96:526:47
1811.96:516:47
1911.96:506:47
2012.06:496:47
2112.06:486:47
2212.06:476:48
2312.06:466:48
2412.06:456:48
2512.16:446:48
2612.16:446:49
2712.16:436:49
2812.16:426:49
2912.16:416:49
3012.26:406:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.24 kWh/m².

For context, solar energy here swings from a low near 3.72 kWh/m² to a high of 5.91 kWh/m² in February across the year — September's 5.24 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.3Bright
305.3Bright
Planning a trip in September

Hazard calendar for Congonhas

In seasonPeak

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

Congonhas'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 Congonhas?

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

7.1
Sightseeing
5th-best month of the year
6.4
Beach & pool
2nd-best month of the year

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

What to pack for Congonhas in September

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

In September, Congonhas sees daytime highs around 25°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Congonhas in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Congonhas peaks around February 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeFeb 10UV 15Jun 19UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7Very high
Aug9Very high
Sep9Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Congonhas 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 Congonhas is worst in September — around 26 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (January, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1624 µg/m³Jan 1411 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Moderate
Mar13Moderate
Apr15Moderate
May18Moderate
Jun18Moderate
Jul17Moderate
Aug17Moderate
Sep26Moderate
Oct17Moderate
Nov12Moderate
Dec12Good
Location & terrain

Where is Congonhas?

Congonhas sits at 20.5°S, 43.9°W, 884 m above sea level, in Brazil. The nearest listed city is Ouro Branco, 17 km away.

Topography around Congonhas

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

Within 3 km, the terrain around Congonhas has only modest variations in elevation — a maximum elevation change of 186 m around an average of 929 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 809 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,654 m.

The land around Congonhas is covered by trees (52%), grassland (25%) and artificial surfaces (20%) within 3 km, trees (48%) and grassland (44%) within 16 km, and trees (48%) and grassland (45%) within 80 km.

3 km
186 m
16 km
809 m
80 km
1,654 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Ouro Branco 17 km · Conselheiro Lafaiete 19 km · Itabirito 29 km · Ouro Preto 39 km · Mariana 48 km · Carandaí 50 km · Brumadinho 54 km · Ibirité 58 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 Congonhas (-20.5053°, -43.8588°, elevation 884 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).