Bom Jardim weather in September

In September, Bom Jardim sees average daytime highs of 23°C and overnight lows near 15°C, with 117 mm of rain across 13.6 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 31% 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 Bom Jardim's 5th-clearest and 1st-windiest month. For the whole year in context, see Bom Jardim's year-round climate.

Daytime high
23°
8th warmest
Overnight low
15°
5th coldest
Rainfall
117 mm
13.6 wet days
Daylight
11 h 54 min
6:48 AM – 6:40 PM
Cloud cover
60%
5th clearest
Wind
6 km/h
1st windiest
Solar energy
4.75 kWh/m²
Travel score
6.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical September day in Bom Jardim reaches about 23°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°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)
12314
22314
32314
42314
52314
62314
72314
82314
92314
102314
112314
122314
132315
142315
152315
162315
172315
182315
192315
202315
212315
222315
232315
242315
252315
262315
272315
282315
292315
302415

Bom Jardim weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 19°33322.613.24.5
Feb27° / 19°23118.412.84.8
Mar26° / 18°25222.812.24.6
Apr25° / 17°12916.511.55.7
May23° / 14°8112.9116.4
Jun22° / 13°438.310.77.1
Jul22° / 13°42810.87.2
Aug23° / 13°50911.27.1
Sep23° / 15°11713.611.96.3
Oct24° / 16°17918.312.55.5
Nov25° / 17°31022.413.14.6
Dec26° / 18°35224.313.34.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16040
25842
35842
45743
55743
65644
75545
85347
95248
104951
114852
124753
134555
144456
154357
164159
174159
183961
193862
203763
213565
223466
233367
243367
253268
263169
273169
283070
292971
302971

Chance of precipitation in September

Any precipitation

Bom Jardim gets around 117 mm of rain over 13.6 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 45% and peaks near 58% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
134
234
335
435
536
636
737
838
938
1039
1140
1241
1342
1442
1543
1644
1745
1847
1948
2049
2150
2251
2352
2453
2554
2655
2756
2857
2957
3058

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 48% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13055150
22955160
32955160
42855170
52755180
62755180
72654200
82554210
92454220
102352241
112153251
122052271
131952281
141852291
151750312
161749322
171648332
181647342
191546353
201545363
211544374
221543384
231542385
241541386
251440397
261440397
271439398
281438399
291437409
3013374010

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 7 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
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 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 6:36 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:036:36
211.67:026:36
311.67:016:37
411.67:006:37
511.66:596:37
611.76:586:37
711.76:576:38
811.76:566:38
911.76:556:38
1011.76:546:39
1111.86:536:39
1211.86:526:39
1311.86:516:39
1411.86:506:40
1511.96:496:40
1611.96:486:40
1711.96:476:41
1811.96:466:41
1911.96:456:41
2012.06:446:41
2112.06:436:42
2212.06:426:42
2312.06:416:42
2412.06:406:43
2512.16:396:43
2612.16:386:43
2712.16:376:43
2812.16:366:44
2912.26:356:44
3012.26:346:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.75 kWh/m².

For context, solar energy here swings from a low near 3.51 kWh/m² to a high of 6.01 kWh/m² in February across the year — September's 4.75 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Bom Jardim

In seasonPeak

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

Bom Jardim's rainy season runs October–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 Bom Jardim?

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

6.3
Sightseeing
5th-best month of the year
5.1
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Bom Jardim for sightseeing.

What to pack for Bom Jardim in September

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

In September, Bom Jardim sees daytime highs around 23°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

UV index in Bom Jardim 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 Bom Jardim peaks around January 21 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 21UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Bom Jardim 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 Bom Jardim is worst in September — around 19 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (March, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1518 µg/m³Mar 1110 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar10Good
Apr12Good
May15Moderate
Jun16Moderate
Jul15Moderate
Aug15Moderate
Sep19Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Bom Jardim?

Bom Jardim sits at 22.2°S, 42.4°W, 584 m above sea level, in Brazil. The nearest listed city is Cordeiro, 15 km away.

Topography around Bom Jardim

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

Within 3 km, the terrain around Bom Jardim has significant variations in elevation — a maximum elevation change of 335 m around an average of 677 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,151 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.

The land around Bom Jardim is covered by trees (64%) and grassland (31%) within 3 km, trees (60%) and grassland (39%) within 16 km, and grassland (48%) and trees (46%) within 80 km.

3 km
335 m
16 km
1,151 m
80 km
2,252 m
treesgrasslandartificial surfaceswaterwetland
September weather nearby: Cordeiro 15 km · Nova Friburgo 18 km · Cantagalo 20 km · Sumidouro 29 km · Carmo 31 km · Além Paraíba 42 km · Cachoeiras de Macacu 42 km · Casimiro de Abreu 43 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 Bom Jardim (-22.1519°, -42.4194°, elevation 584 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).