Paty do Alferes weather in September

In September, Paty do Alferes sees average daytime highs of 26°C and overnight lows near 17°C, with 69 mm of rain across 9.8 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 26°C through the month. The sky is clear or mostly clear about 33% of the time in September, and the air most often feels humid.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Paty do Alferes's 6th-clearest and 1st-windiest month. For the whole year in context, see Paty do Alferes's year-round climate.

Daytime high
26°
8th warmest
Overnight low
17°
5th coldest
Rainfall
69 mm
9.8 wet days
Daylight
11 h 54 min
6:52 AM – 6:44 PM
Cloud cover
59%
6th clearest
Wind
8 km/h
1st windiest
Solar energy
4.5 kWh/m²
Travel score
6.6
out of 10

Paty do Alferes 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 26°C through the month.

A typical September day in Paty do Alferes reaches about 26°C in the afternoon and slips back to 17°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 32°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°35°151015202530
Avg high (°C)Avg low (°C)
12616
22616
32616
42616
52617
62617
72617
82617
92617
102617
112617
122617
132617
142617
152617
162617
172617
182617
192617
202617
212617
222617
232617
242617
252617
262618
272618
282618
292618
302618

How September really feels in Paty do Alferes

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Paty do Alferes 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
Jan30° / 21°27321.813.23.6
Feb30° / 21°19417.112.83.8
Mar29° / 21°19620.312.24.1
Apr28° / 19°8412.311.55.9
May25° / 17°559.710.96.9
Jun25° / 16°305.610.77.7
Jul25° / 15°305.210.87.9
Aug25° / 15°306.111.27.6
Sep26° / 17°699.811.96.6
Oct27° / 19°11213.512.55.8
Nov27° / 20°20419.213.14.8
Dec29° / 21°24221.813.34.0

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 12% of September, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16040
26040
35941
45842
55842
65743
75545
85347
95248
105149
114951
124852
134753
144654
154555
164555
174456
184159
194060
203961
213862
223763
233763
243763
253664
263664
273565
283565
293466
303466

Chance of precipitation in September

Any precipitation

Paty do Alferes gets around 69 mm of rain over 9.8 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 32% and peaks near 41% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
125
226
326
427
527
628
728
828
929
1029
1129
1229
1330
1430
1531
1631
1732
1833
1933
2034
2135
2236
2337
2438
2538
2639
2740
2840
2941
3041

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
112394360
212384460
312374470
411374570
511364670
611354680
710354780
810344890
99334890
1093249100
1183249110
1273151110
1373150120
1463150130
1563051130
1653051140
1753050150
1852950160
1952850170
2052849180
2152749190
2252748200
2352647220
2452547230
2552546240
2652446250
2752346260
2852246270
2952146281
3052145281

Wind in September

Winds average 8 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 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 42 minutes over September. Sunrise moves from 7:07 AM to 6:38 AM, and sunset from 6:40 PM to 6:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:076:40
211.67:066:40
311.67:056:40
411.67:046:41
511.67:036:41
611.77:026:41
711.77:016:42
811.77:006:42
911.76:596:42
1011.76:586:42
1111.86:576:43
1211.86:566:43
1311.86:556:43
1411.86:546:44
1511.96:536:44
1611.96:526:44
1711.96:516:44
1811.96:506:45
1911.96:496:45
2012.06:486:45
2112.06:476:46
2212.06:466:46
2312.06:456:46
2412.06:446:47
2512.16:436:47
2612.16:426:47
2712.16:416:47
2812.16:396:48
2912.26:386:48
3012.26:386:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.5 kWh/m².

For context, solar energy here swings from a low near 3.34 kWh/m² to a high of 5.84 kWh/m² in February across the year — September's 4.5 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
Planning a trip in September

Hazard calendar for Paty do Alferes

In seasonPeak

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

Paty do Alferes'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 Paty do Alferes?

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

6.6
Sightseeing
5th-best month of the year
6.5
Beach & pool
4th-best month of the year

September is a reasonable time to visit Paty do Alferes for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Paty do Alferes in September

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

In September, Paty do Alferes sees daytime highs around 26°C and nights near 17°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Paty do Alferes in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Paty do Alferes peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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 20UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep7High
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Paty do Alferes 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 Paty do Alferes is worst in July — around 38 µg/m³ PM2.5 (poor), about 2.0× the cleanest month (December, 19 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateModerateJul 1237 µg/m³Dec 2319 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb19Moderate
Mar21Moderate
Apr24Moderate
May31Moderate
Jun36Poor
Jul38Poor
Aug32Moderate
Sep37Poor
Oct24Moderate
Nov20Moderate
Dec19Moderate
Location & terrain

Where is Paty do Alferes?

Paty do Alferes sits at 22.4°S, 43.4°W, 599 m above sea level, in Brazil. The nearest listed city is Miguel Pereira, 6.0 km away.

Topography around Paty do Alferes

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

Within 3 km, the terrain around Paty do Alferes has significant variations in elevation — a maximum elevation change of 478 m around an average of 694 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,678 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.

The land around Paty do Alferes is covered by trees (47%) and grassland (47%) within 3 km, trees (57%) and grassland (42%) within 16 km, and trees (47%) and grassland (37%) within 80 km.

3 km
478 m
16 km
1,678 m
80 km
2,252 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Miguel Pereira 6.0 km · Vassouras 25 km · Petrópolis 26 km · Paraíba do Sul 33 km · Japeri 34 km · Mendes 34 km · Queimados 35 km · Valença 35 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 Paty do Alferes (-22.4286°, -43.4186°, elevation 599 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).