Carmo weather in September

In September, Carmo sees average daytime highs of 25°C and overnight lows near 16°C, with 59 mm of rain across 8.9 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 7th-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 33% of the time in September, and the air most often feels comfortable.

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 Carmo's 5th-clearest and 1st-windiest month. For the whole year in context, see Carmo's year-round climate.

Daytime high
25°
8th warmest
Overnight low
16°
5th coldest
Rainfall
59 mm
8.9 wet days
Daylight
11 h 54 min
6:48 AM – 6:41 PM
Cloud cover
57%
5th clearest
Wind
6 km/h
1st windiest
Solar energy
4.74 kWh/m²
Travel score
7.0
out of 10

Carmo is town in Carmo Municipality, Rio de Janeiro, 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 Carmo reaches about 25°C in the afternoon and slips back to 16°C overnight — a 9°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 about 1°C cooler than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12515
22515
32515
42515
52515
62515
72515
82515
92515
102515
112515
122516
132516
142516
152516
162516
172516
182516
192516
202516
212516
222516
232516
242516
252516
262516
272516
282516
292516
302516

Carmo weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°20117.213.24.9
Feb29° / 20°10612.912.85.0
Mar28° / 19°11915.112.25.3
Apr27° / 18°589.811.56.6
May24° / 15°396.7117.5
Jun23° / 14°173.810.78.1
Jul23° / 13°204.210.88.1
Aug24° / 14°234.511.28.1
Sep25° / 16°598.911.97.0
Oct26° / 17°10512.912.56.1
Nov26° / 18°18818.7135.0
Dec27° / 19°22120.313.34.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% 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 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16436
26238
36238
46238
56139
65941
75941
85842
95644
105446
115347
125149
135050
144951
154852
164654
174555
184456
194258
204159
214060
223961
233961
243862
253763
263763
273664
283664
293565
303565

Chance of precipitation in September

Any precipitation

Carmo gets around 59 mm of rain over 8.9 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 39% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
118
218
319
419
519
620
721
822
922
1024
1125
1226
1327
1428
1529
1630
1731
1832
1933
2034
2135
2236
2337
2437
2538
2638
2739
2839
2939
3039

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 42% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12350261
22349271
32249271
42249281
52149291
62149291
72048301
81948312
91847332
101747342
111646352
121546363
131445383
141344394
151343404
161243415
171142425
181141436
191140436
201139447
211138448
221037449
2310364410
2410354411
2510344412
2610334413
2710334414
2810324415
2910314316
3010314317

Wind in September

Winds average 6 km/h in September, the windiest month of the year.

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

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 7:03 AM to 6:34 AM, and sunset from 6:37 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:036:37
211.67:026:37
311.67:026:37
411.67:016:38
511.67:006:38
611.76:596:38
711.76:586:39
811.76:576:39
911.76:566:39
1011.76:556:39
1111.86:546:40
1211.86:536:40
1311.86:526:40
1411.86:516:40
1511.96:506:41
1611.96:486:41
1711.96:476:41
1811.96:466:42
1911.96:456:42
2012.06:446:42
2112.06:436:42
2212.06:426:43
2312.06:416:43
2412.06:406:43
2512.16:396:44
2612.16:386:44
2712.16:376:44
2812.16:366:44
2912.26:356:45
3012.26:346:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.74 kWh/m².

For context, solar energy here swings from a low near 3.5 kWh/m² to a high of 5.98 kWh/m² in February across the year — September's 4.74 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.8Bright
Planning a trip in September

Hazard calendar for Carmo

In seasonPeak

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

Carmo's monsoon runs October–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 Carmo?

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

7.0
Sightseeing
5th-best month of the year
6.3
Beach & pool
6th-best month of the year

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

What to pack for Carmo in September

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

In September, Carmo sees daytime highs around 25°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Carmo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Carmo peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 24UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Carmo 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 Carmo is worst in September — around 19 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (January, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1518 µg/m³Jan 1210 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar11Good
Apr12Moderate
May14Moderate
Jun14Moderate
Jul14Moderate
Aug14Moderate
Sep19Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Carmo?

Carmo sits at 21.9°S, 42.6°W, 354 m above sea level, in Brazil. The nearest listed city is Além Paraíba, 11 km away.

Topography around Carmo

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

Within 3 km, the terrain around Carmo has significant variations in elevation — a maximum elevation change of 330 m around an average of 334 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 955 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,251 m.

The land around Carmo is covered by grassland (60%) and trees (35%) within 3 km, grassland (58%) and trees (40%) within 16 km, and grassland (52%) and trees (47%) within 80 km.

3 km
330 m
16 km
955 m
80 km
2,251 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Além Paraíba 11 km · Sumidouro 15 km · Cantagalo 25 km · Cordeiro 28 km · Bom Jardim 31 km · Sapucaia 32 km · Nova Friburgo 40 km · São José do Vale do Rio Preto 41 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 Carmo (-21.9336°, -42.6086°, elevation 354 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).