Passos weather in September

In September, Passos sees average daytime highs of 28°C and overnight lows near 16°C, with 58 mm of rain across 7.1 wet days and about 11.9 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 48% 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 Passos's 4th-clearest and 1st-windiest month. For the whole year in context, see Passos's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
16°
5th coldest
Rainfall
58 mm
7.1 wet days
Daylight
11 h 54 min
7:04 AM – 6:57 PM
Cloud cover
46%
4th clearest
Wind
9 km/h
1st windiest
Solar energy
5.65 kWh/m²
Travel score
6.6
out of 10

Passos 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 28°C through the month.

A typical September day in Passos reaches about 28°C in the afternoon and slips back to 16°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 32°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12815
22815
32815
42815
52815
62815
72815
82815
92815
102816
112816
122816
132816
142816
152816
162816
172816
182816
192816
202816
212816
222817
232817
242817
252817
262817
272817
282817
292817
302817

Passos weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°24322.213.14.3
Feb28° / 20°1641812.74.4
Mar28° / 19°14618.312.15.0
Apr27° / 17°54911.56.7
May25° / 15°354.9117.8
Jun24° / 13°162.510.88.5
Jul24° / 12°101.810.98.7
Aug26° / 14°132.511.38.3
Sep28° / 16°587.111.96.6
Oct29° / 18°9413.712.55.2
Nov28° / 19°16719134.8
Dec28° / 19°23623.813.24.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% 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 37%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17624
27525
37525
47426
57327
67327
77228
87129
96931
106931
116832
126634
136535
146436
156238
166238
176139
186040
195842
205743
215644
225644
235545
245446
255248
265248
275149
285149
295050
304951

Chance of precipitation in September

Any precipitation

Passos gets around 58 mm of rain over 7.1 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 24% and peaks near 35% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
113
214
314
415
515
616
716
817
918
1019
1119
1220
1321
1422
1523
1624
1725
1826
1927
2028
2129
2230
2331
2431
2532
2633
2733
2834
2935
3035

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 41% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16030100
25930110
35831110
45731120
55631130
65531140
75431150
85232160
95132170
104933180
114733191
124534201
134434211
144235221
154035231
163936242
173736252
183636262
193536272
203336283
213236293
223135313
233035324
242834335
252733345
262732366
272631377
282530388
292429398
302328399

Wind in September

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

Across September, daily wind ranges from about 8 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
18calm
28calm
38calm
48calm
58calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
258calm
268calm
278calm
288calm
298calm
308calm

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 7:19 AM to 6:51 AM, and sunset from 6:54 PM to 7:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:196:54
211.67:186:54
311.67:176:54
411.67:166:54
511.77:156:55
611.77:146:55
711.77:136:55
811.77:126:55
911.77:116:56
1011.87:106:56
1111.87:096:56
1211.87:086:56
1311.87:076:57
1411.87:066:57
1511.97:056:57
1611.97:046:57
1711.97:036:57
1811.97:026:58
1911.97:016:58
2012.07:006:58
2112.06:596:58
2212.06:586:59
2312.06:576:59
2412.06:566:59
2512.16:556:59
2612.16:557:00
2712.16:547:00
2812.16:537:00
2912.16:527:01
3012.26:517:01

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.65 kWh/m².

For context, solar energy here swings from a low near 3.93 kWh/m² to a high of 5.95 kWh/m² in October across the year — September's 5.65 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in September

Hazard calendar for Passos

In seasonPeak

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

Passos'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 Passos?

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

6.6
Sightseeing
6th-best month of the year
7.5
Beach & pool
3rd-best month of the year

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

What to pack for Passos in September

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

In September, Passos sees daytime highs around 28°C and nights near 16°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Passos in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Passos peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 22UV 15Jun 21UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep10Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Passos 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 Passos is worst in September — around 28 µg/m³ PM2.5 (moderate), about 3.7× the cleanest month (November, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1626 µg/m³Nov 238 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar8Good
Apr9Good
May9Good
Jun9Good
Jul9Good
Aug14Moderate
Sep28Moderate
Oct13Moderate
Nov8Good
Dec8Good
Location & terrain

Where is Passos?

Passos sits at 20.7°S, 46.6°W, 751 m above sea level, in Brazil. The nearest listed city is Alpinópolis, 28 km away.

Topography around Passos

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

Within 3 km, the terrain around Passos has only modest variations in elevation — a maximum elevation change of 116 m around an average of 758 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 474 m; within 80 km, large variations in elevation — a maximum elevation change of 907 m.

The land around Passos is covered by artificial surfaces (55%) within 3 km, cropland (36%), grassland (33%) and trees (26%) within 16 km, and grassland (40%) and trees (34%) within 80 km.

3 km
116 m
16 km
474 m
80 km
907 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Alpinópolis 28 km · Cássia 36 km · São Sebastião do Paraíso 45 km · Nova Resende 49 km · Carmo do Rio Claro 58 km · Monte Santo de Minas 65 km · Guaxupé 66 km · Guaranésia 68 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 Passos (-20.7189°, -46.6097°, elevation 751 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).