Ouro Preto weather in September

In September, Ouro Preto sees average daytime highs of 25°C and overnight lows near 14°C, with 83 mm of rain across 9.4 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 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 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 Ouro Preto's 4th-clearest and 1st-windiest month. For the whole year in context, see Ouro Preto's year-round climate.

Daytime high
25°
8th warmest
Overnight low
14°
5th coldest
Rainfall
83 mm
9.4 wet days
Daylight
11 h 54 min
6:52 AM – 6:45 PM
Cloud cover
55%
4th clearest
Wind
9 km/h
1st windiest
Solar energy
5.1 kWh/m²
Travel score
7.0
out of 10

Ouro Preto 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 Ouro Preto 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 29°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)
12413
22513
32513
42513
52513
62514
72514
82514
92514
102514
112514
122514
132514
142514
152514
162514
172514
182515
192515
202515
212515
222515
232515
242515
252515
262515
272515
282515
292515
302515

Ouro Preto 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° / 18°2942013.14.9
Feb27° / 18°18515.612.75.3
Mar26° / 18°22719.712.15.1
Apr25° / 16°9913.111.56.3
May23° / 14°488117.1
Jun23° / 12°183.310.87.9
Jul23° / 12°112.910.98.1
Aug24° / 12°24411.38.1
Sep25° / 14°839.411.97.0
Oct25° / 16°13915.312.55.9
Nov25° / 17°28321.8134.7
Dec26° / 18°34024.213.24.4

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 48%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16931
26832
36832
46733
56634
66535
76337
86238
96040
105941
115842
125644
135545
145347
155248
165149
174951
184852
194654
204456
214357
224357
234258
244258
254060
264060
273961
283961
293862
303862

Chance of precipitation in September

Any precipitation

Ouro Preto gets around 83 mm of rain over 9.4 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 31% and peaks near 45% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
119
219
320
421
521
622
723
823
924
1025
1126
1227
1328
1429
1530
1631
1732
1833
1934
2035
2136
2238
2339
2440
2541
2642
2743
2844
2944
3045

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 40% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1553870
2543880
3543880
4533980
5523990
65139100
75139100
84940110
94840120
104640140
114540150
124341160
134141170
144041181
153842201
163742211
173542221
183442231
193242241
203142251
213042272
222941282
232841292
242740302
252640323
262539333
272539343
282438353
292338363
302237373

Wind in September

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

Across September, daily wind ranges from about 9 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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 7:06 AM to 6:38 AM, and sunset from 6:41 PM to 6:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:066:41
211.67:056:42
311.67:046:42
411.67:036:42
511.77:026:42
611.77:016:43
711.77:006:43
811.76:596:43
911.76:596:43
1011.86:586:44
1111.86:576:44
1211.86:566:44
1311.86:556:44
1411.86:546:44
1511.96:536:45
1611.96:526:45
1711.96:516:45
1811.96:506:45
1911.96:496:46
2012.06:486:46
2112.06:476:46
2212.06:466:46
2312.06:456:47
2412.06:446:47
2512.16:436:47
2612.16:426:47
2712.16:416:47
2812.16:406:48
2912.16:396:48
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 5.1 kWh/m².

For context, solar energy here swings from a low near 3.65 kWh/m² to a high of 5.95 kWh/m² in February across the year — September's 5.1 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.1Bright
Planning a trip in September

Hazard calendar for Ouro Preto

In seasonPeak

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

Ouro Preto'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 Ouro Preto?

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

7.0
Sightseeing
5th-best month of the year
6.3
Beach & pool
2nd-best month of the year

September is one of the better times to visit Ouro Preto for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Ouro Preto in September

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

In September, Ouro Preto sees daytime highs around 25°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Ouro Preto 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 Ouro Preto peaks around February 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeFeb 10UV 15Jun 18UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7Very high
Aug9Very high
Sep10Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Ouro Preto 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 Ouro Preto is worst in September — around 26 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (January, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1624 µg/m³Jan 1411 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Moderate
Mar13Moderate
Apr15Moderate
May18Moderate
Jun18Moderate
Jul17Moderate
Aug17Moderate
Sep26Moderate
Oct17Moderate
Nov12Moderate
Dec12Good
Location & terrain

Where is Ouro Preto?

Ouro Preto sits at 20.4°S, 43.5°W, 1,201 m above sea level, in Brazil. The nearest listed city is Mariana, 9.0 km away.

Topography around Ouro Preto

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

Within 3 km, the terrain around Ouro Preto has significant variations in elevation — a maximum elevation change of 579 m around an average of 1,211 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,126 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,793 m.

The land around Ouro Preto is covered by trees (47%) and grassland (34%) within 3 km, trees (66%) and grassland (31%) within 16 km, and trees (51%) and grassland (45%) within 80 km.

3 km
579 m
16 km
1,126 m
80 km
1,793 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Mariana 9.0 km · Ouro Branco 24 km · Itabirito 35 km · Piranga 39 km · Congonhas 39 km · Conselheiro Lafaiete 42 km · Santa Bárbara 49 km · Barão de Cocais 50 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 Ouro Preto (-20.3948°, -43.5052°, elevation 1,201 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).