São João del Rei weather in September

In September, São João del Rei sees average daytime highs of 26°C and overnight lows near 15°C, with 60 mm of rain across 7.4 wet days and about 11.9 hours of daylight. It is the 7th-warmest and 7th-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 40% 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 São João del Rei's 4th-clearest and 1st-windiest month. For the whole year in context, see São João del Rei's year-round climate.

Daytime high
26°
7th warmest
Overnight low
15°
5th coldest
Rainfall
60 mm
7.4 wet days
Daylight
11 h 54 min
6:55 AM – 6:48 PM
Cloud cover
53%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
5.19 kWh/m²
Travel score
7.2
out of 10

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 São João del Rei reaches about 26°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 21°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°35°151015202530
Avg high (°C)Avg low (°C)
12514
22514
32514
42514
52514
62514
72514
82614
92614
102614
112614
122614
132614
142615
152615
162615
172615
182615
192615
202615
212615
222615
232615
242615
252615
262615
272615
282615
292615
302615

São João del Rei weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°22820.613.14.8
Feb27° / 18°13515.812.75.2
Mar27° / 18°14717.512.15.3
Apr26° / 16°498.711.56.9
May23° / 14°315.3117.6
Jun23° / 12°152.510.78.1
Jul23° / 12°10210.88.4
Aug24° / 13°172.811.38.5
Sep26° / 15°607.411.97.2
Oct26° / 16°10012.612.56.1
Nov26° / 17°18618.9135.1
Dec26° / 18°23822.313.34.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% 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 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16832
26832
36733
46733
56634
66436
76337
86337
96238
106040
115842
125743
135545
145446
155347
165248
175149
185050
194951
204753
214654
224555
234456
244456
254357
264357
274258
284258
294159
304159

Chance of precipitation in September

Any precipitation

São João del Rei gets around 60 mm of rain over 7.4 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 25% and peaks near 36% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
114
215
315
415
516
616
717
817
918
1019
1120
1221
1322
1423
1524
1625
1726
1827
1928
2029
2130
2231
2332
2433
2534
2634
2735
2835
2936
3036

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 47% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1653050
2653050
3643150
4633160
5623260
6613270
7593380
8583480
9573490
105435110
115335120
125235130
135036140
144936150
154737160
164637170
174438180
184338190
194238200
204039210
213939220
223839231
233739241
243639251
253439261
263339271
273239281
283139292
292939302
302839312

Wind in September

Winds average 11 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 11 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
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 7:10 AM to 6:41 AM, and sunset from 6:44 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:106:44
211.67:096:44
311.67:086:45
411.67:076:45
511.77:066:45
611.77:056:45
711.77:046:46
811.77:036:46
911.77:026:46
1011.87:016:46
1111.87:006:47
1211.86:596:47
1311.86:586:47
1411.86:576:47
1511.96:566:48
1611.96:556:48
1711.96:546:48
1811.96:536:48
1911.96:526:49
2012.06:516:49
2112.06:506:49
2212.06:496:49
2312.06:486:50
2412.06:476:50
2512.16:466:50
2612.16:456:50
2712.16:446:51
2812.16:436:51
2912.26:426:51
3012.26:416:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.19 kWh/m².

For context, solar energy here swings from a low near 3.69 kWh/m² to a high of 5.74 kWh/m² in February across the year — September's 5.19 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in September

Hazard calendar for São João del Rei

In seasonPeak

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

São João del Rei'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 São João del Rei?

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

7.2
Sightseeing
5th-best month of the year
6.7
Beach & pool
2nd-best month of the year

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

What to pack for São João del Rei in September

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

In September, São João del Rei sees daytime highs around 26°C and nights near 15°C. Worth packing: light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in São João del Rei in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São João del Rei peaks around February 9 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 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 highExtremeFeb 9UV 15Jun 22UV 7
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep9Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in São João del Rei 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 São João del Rei is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (January, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1616 µg/m³Jan 118 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar9Good
Apr9Good
May10Good
Jun10Good
Jul9Good
Aug11Good
Sep17Moderate
Oct11Good
Nov9Good
Dec8Good
Location & terrain

Where is São João del Rei?

São João del Rei sits at 21.1°S, 44.3°W, 911 m above sea level, in Brazil. The nearest listed city is Barroso, 30 km away.

Topography around São João del Rei

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São João del Rei.

Within 3 km, the terrain around São João del Rei has significant variations in elevation — a maximum elevation change of 301 m around an average of 956 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 531 m; within 80 km, large variations in elevation — a maximum elevation change of 1,184 m.

The land around São João del Rei is covered by grassland (42%), trees (28%) and artificial surfaces (28%) within 3 km, grassland (53%) and trees (38%) within 16 km, and grassland (56%) and trees (34%) within 80 km.

3 km
301 m
16 km
531 m
80 km
1,184 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Barroso 30 km · Carandaí 51 km · Barbacena 52 km · Bom Sucesso 53 km · Santo Antônio do Amparo 71 km · Conselheiro Lafaiete 72 km · Oliveira 76 km · Carmópolis de Minas 77 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 São João del Rei (-21.1356°, -44.2617°, elevation 911 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).