Altinópolis weather in September

In September, Altinópolis sees average daytime highs of 29°C and overnight lows near 17°C, with 73 mm of rain across 8.1 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 52% 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 Altinópolis's 4th-clearest and 1st-windiest month. For the whole year in context, see Altinópolis's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
17°
5th coldest
Rainfall
73 mm
8.1 wet days
Daylight
11 h 54 min
7:07 AM – 7:00 PM
Cloud cover
43%
4th clearest
Wind
10 km/h
1st windiest
Solar energy
5.71 kWh/m²
Travel score
6.1
out of 10

Altinópolis 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 29°C through the month.

A typical September day in Altinópolis reaches about 29°C in the afternoon and slips back to 17°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 33°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)
12816
22816
32816
42916
52917
62917
72917
82917
92917
102917
112917
122917
132917
142917
152917
162917
172917
182917
192917
202918
212918
222918
232918
242918
252918
262918
272918
282918
292918
302918

Altinópolis weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°29123.813.14.1
Feb28° / 20°20919.712.74.2
Mar28° / 19°18319.912.14.8
Apr27° / 18°7510.111.56.5
May25° / 15°446.2117.6
Jun25° / 14°262.910.78.4
Jul25° / 14°172.510.98.5
Aug27° / 15°183.111.38.0
Sep29° / 17°738.111.96.1
Oct29° / 19°12114.212.55.0
Nov28° / 19°18818.5134.8
Dec28° / 20°26624.613.34.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17822
27822
37822
47723
57723
67624
77525
87525
97327
107228
117129
127030
136931
146832
156733
166634
176634
186535
196436
206337
216238
226139
236040
245941
255941
265842
275644
285644
295545
305446

Chance of precipitation in September

Any precipitation

Altinópolis gets around 73 mm of rain over 8.1 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 27% 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 (%)
116
217
317
418
518
619
720
820
921
1022
1123
1224
1324
1425
1526
1627
1728
1829
1930
2031
2132
2233
2334
2435
2535
2636
2737
2838
2939
3039

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 45% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16723100
26524110
36424120
46424120
56225130
66125140
75926150
85726161
95527171
105328181
115129191
125129191
134830201
144731212
154532222
164432222
174232232
184133242
193933253
203833263
213733273
223532294
233432305
243331315
253231326
263030337
272929348
282829358
292728359
3026273610

Wind in September

Winds average 10 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 7:22 AM to 6:54 AM, and sunset from 6:57 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:226:57
211.67:216:57
311.67:206:57
411.67:196:57
511.77:186:58
611.77:176:58
711.77:166:58
811.77:156:58
911.77:146:59
1011.87:136:59
1111.87:126:59
1211.87:116:59
1311.87:107:00
1411.87:097:00
1511.97:087:00
1611.97:077:00
1711.97:067:01
1811.97:057:01
1911.97:047:01
2012.07:037:01
2112.07:027:02
2212.07:017:02
2312.07:007:02
2412.06:597:02
2512.16:597:03
2612.16:587:03
2712.16:577:03
2812.16:567:03
2912.16:557:04
3012.26:547:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.71 kWh/m².

For context, solar energy here swings from a low near 3.97 kWh/m² to a high of 6.01 kWh/m² in October across the year — September's 5.71 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
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
Planning a trip in September

Hazard calendar for Altinópolis

In seasonPeak

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

Altinópolis'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 Altinópolis?

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

6.1
Sightseeing
6th-best month of the year
7.5
Beach & pool
3rd-best month of the year

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

What to pack for Altinópolis in September

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

In September, Altinópolis sees daytime highs around 29°C and nights near 17°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Altinópolis 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 Altinópolis peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 21UV 15Jun 23UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep10Very high
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Altinópolis 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 Altinópolis is worst in September — around 43 µg/m³ PM2.5 (poor), about 5.2× the cleanest month (November, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1540 µg/m³Nov 229 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar10Good
Apr11Good
May12Good
Jun11Good
Jul11Good
Aug20Moderate
Sep43Poor
Oct15Moderate
Nov8Good
Dec9Good
Location & terrain

Where is Altinópolis?

Altinópolis sits at 21.0°S, 47.4°W, 918 m above sea level, in Brazil. The nearest listed city is Batatais, 27 km away.

Topography around Altinópolis

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

Within 3 km, the terrain around Altinópolis has significant variations in elevation — a maximum elevation change of 357 m around an average of 852 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 550 m; within 80 km, large variations in elevation — a maximum elevation change of 803 m.

The land around Altinópolis is covered by trees (63%) within 3 km, trees (53%) and cropland (34%) within 16 km, and cropland (44%) and trees (36%) within 80 km.

3 km
357 m
16 km
550 m
80 km
803 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Batatais 27 km · Cajuru 29 km · Brodowski 30 km · Serrana 31 km · Jardinópolis 40 km · São Sebastião do Paraíso 42 km · Monte Santo de Minas 45 km · Ribeirão Preto 48 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 Altinópolis (-21.0256°, -47.3739°, elevation 918 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).