Passa Quatro weather in September

In September, Passa Quatro sees average daytime highs of 25°C and overnight lows near 14°C, with 79 mm of rain across 10.6 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 38% of the time in September, and the air most often feels comfortable.

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

Daytime high
25°
8th warmest
Overnight low
14°
5th coldest
Rainfall
79 mm
10.6 wet days
Daylight
11 h 54 min
6:58 AM – 6:50 PM
Cloud cover
56%
5th clearest
Wind
6 km/h
1st windiest
Solar energy
4.99 kWh/m²
Travel score
6.8
out of 10

Passa Quatro 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 Passa Quatro 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 30°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
82514
92514
102514
112514
122514
132514
142514
152514
162514
172514
182514
192514
202514
212514
222514
232515
242515
252515
262515
272515
282515
292515
302515

Passa Quatro 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
Jan27° / 18°27323.913.24.3
Feb27° / 18°19119.512.84.7
Mar26° / 17°18520.312.25.0
Apr25° / 16°6810.811.56.6
May23° / 13°487.310.97.2
Jun22° / 12°29510.77.7
Jul22° / 11°305.110.87.8
Aug24° / 12°32511.28.0
Sep25° / 14°7910.611.96.8
Oct26° / 16°12915.512.55.8
Nov26° / 17°18819.313.15.1
Dec27° / 18°24222.713.34.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16634
26535
36436
46436
56337
66139
76040
85941
95743
105644
115446
125347
135248
145248
155149
165050
174951
184951
194852
204654
214555
224555
234555
244357
254258
264258
274159
284060
294060
303961

Chance of precipitation in September

Any precipitation

Passa Quatro gets around 79 mm of rain over 10.6 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 34% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
124
225
325
426
527
627
728
829
929
1030
1130
1231
1331
1432
1532
1633
1734
1835
1936
2037
2139
2240
2341
2442
2543
2644
2745
2845
2946
3046

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 43% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1603550
2583660
3573760
4563860
5543970
6534070
7514180
8494290
9484390
104644100
114445110
124345120
134146130
144046140
153846150
163747160
173647180
183447190
193347200
203246220
213146230
223045250
232944260
242844280
252743291
262642311
272542321
282441341
292441351
302340361

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 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 7:13 AM to 6:44 AM, and sunset from 6:46 PM to 6:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:136:46
211.67:126:46
311.67:116:47
411.67:106:47
511.67:096:47
611.77:086:47
711.77:076:48
811.77:066:48
911.77:056:48
1011.77:046:49
1111.87:036:49
1211.87:026:49
1311.87:016:50
1411.87:006:50
1511.96:596:50
1611.96:586:50
1711.96:576:51
1811.96:566:51
1911.96:556:51
2012.06:546:52
2112.06:536:52
2212.06:526:52
2312.06:516:52
2412.06:506:53
2512.16:496:53
2612.16:486:53
2712.16:476:54
2812.16:466:54
2912.26:456:54
3012.26:446:55

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.99 kWh/m².

For context, solar energy here swings from a low near 3.62 kWh/m² to a high of 5.55 kWh/m² in February across the year — September's 4.99 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Passa Quatro

In seasonPeak

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

Passa Quatro'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 Passa Quatro?

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

6.8
Sightseeing
5th-best month of the year
6.2
Beach & pool
2nd-best month of the year

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

What to pack for Passa Quatro in September

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

In September, Passa Quatro sees daytime highs around 25°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Passa Quatro 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 Passa Quatro peaks around February 8 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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 highExtremeFeb 8UV 15Jul 11UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep7Very high
Oct12Extreme
Nov14Extreme
Dec15Extreme

Air quality in Passa Quatro 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 Passa Quatro is worst in September — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1518 µg/m³Dec 209 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar10Good
Apr11Good
May13Moderate
Jun13Moderate
Jul13Moderate
Aug14Moderate
Sep19Moderate
Oct13Moderate
Nov10Good
Dec9Good
Location & terrain

Where is Passa Quatro?

Passa Quatro sits at 22.4°S, 45.0°W, 924 m above sea level, in Brazil. The nearest listed city is Itanhandu, 11 km away.

Topography around Passa Quatro

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

Within 3 km, the terrain around Passa Quatro has significant variations in elevation — a maximum elevation change of 378 m around an average of 1,026 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,245 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,761 m.

The land around Passa Quatro is covered by trees (48%) and grassland (45%) within 3 km, trees (56%) and grassland (40%) within 16 km, and trees (49%) and grassland (44%) within 80 km.

3 km
378 m
16 km
2,245 m
80 km
2,761 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Itanhandu 11 km · Cruzeiro 20 km · Cachoeira Paulista 31 km · São Lourenço 32 km · Lorena 41 km · Itatiaia 43 km · Caxambu 46 km · Baependi 49 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 Passa Quatro (-22.3903°, -44.9667°, elevation 924 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).