São Francisco weather in September

In September, São Francisco sees average daytime highs of 33°C and overnight lows near 21°C, with 10 mm of rain across 1.8 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 60% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is São Francisco's 3rd-clearest and 1st-windiest month. For the whole year in context, see São Francisco's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
21°
5th coldest
Rainfall
10 mm
1.8 wet days
Daylight
11 h 54 min
6:56 AM – 6:51 PM
Cloud cover
36%
3rd clearest
Wind
11 km/h
1st windiest
Solar energy
6.33 kWh/m²
Travel score
4.1
out of 10

São Francisco is town in Minas Gerais, 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 33°C through the month.

A typical September day in São Francisco reaches about 33°C in the afternoon and slips back to 21°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 37°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13320
23320
33320
43320
53320
63320
73320
83321
93321
103321
113321
123321
133321
143321
153421
163421
173421
183421
193421
203421
213422
223422
233422
243422
253422
263422
273422
283422
293422
303422

How September really feels in São Francisco

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

São Francisco weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°13814.212.84.0
Feb31° / 22°1031212.54.0
Mar31° / 22°12313.412.14.1
Apr31° / 21°436.711.74.9
May30° / 20°112.211.35.8
Jun30° / 19°20.411.16.5
Jul30° / 18°0011.16.6
Aug31° / 19°20.411.55.7
Sep33° / 21°101.811.94.1
Oct34° / 22°637.412.43.4
Nov31° / 22°16615.912.73.7
Dec31° / 22°17616.712.93.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 23%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18317
28317
38317
48317
58218
68218
78218
88218
98218
108119
118119
128119
138119
148020
157921
167921
177822
187723
197723
207525
217525
227327
237228
247129
256931
266832
276832
286634
296634
306535

Chance of precipitation in September

Any precipitation

São Francisco gets around 10 mm of rain over 1.8 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 6% and peaks near 15% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
12
22
32
42
51
62
72
82
92
102
113
123
134
144
155
165
176
187
198
209
219
2210
2311
2411
2512
2612
2713
2814
2914
3015

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 51% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1652960
2642970
3642970
4642970
5642970
6642970
7633070
8633070
9633070
10623170
11613180
12593281
13583381
14563491
15553492
165335102
175036113
184936124
194736134
204537145
214337155
224137176
233936186
243736207
253636218
263436228
273335239
2832352410
2931342510
3030332611

Wind in September

Winds average 11 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 11 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
111calm
211calm
311calm
411calm
511calm
611calm
711calm
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 42 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over September. Sunrise moves from 7:09 AM to 6:45 AM, and sunset from 6:50 PM to 6:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.77:096:50
211.77:086:50
311.77:076:50
411.77:066:50
511.77:056:50
611.87:056:50
711.87:046:50
811.87:036:50
911.87:026:51
1011.87:016:51
1111.87:016:51
1211.97:006:51
1311.96:596:51
1411.96:586:51
1511.96:576:51
1611.96:566:51
1711.96:566:51
1811.96:556:51
1912.06:546:51
2012.06:536:51
2112.06:526:52
2212.06:516:52
2312.06:516:52
2412.06:506:52
2512.06:496:52
2612.16:486:52
2712.16:476:52
2812.16:476:52
2912.16:466:52
3012.16:456:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.33 kWh/m².

For context, solar energy here swings from a low near 4.54 kWh/m² to a high of 6.4 kWh/m² in October across the year — September's 6.33 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.4Intense
246.4Intense
256.4Intense
266.4Intense
276.4Intense
286.4Intense
296.4Intense
306.4Intense
Planning a trip in September

Hazard calendar for São Francisco

In seasonPeak

None of São Francisco'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 Francisco's rainy season runs November–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 São Francisco?

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

4.1
Sightseeing
6th-best month of the year
7.6
Beach & pool
5th-best month of the year

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

What to pack for São Francisco in September

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

In September, São Francisco sees daytime highs around 33°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

UV index in São Francisco in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (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 Francisco peaks around February 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 16UV 15Jul 11UV 8
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is São Francisco?

São Francisco sits at 15.9°S, 44.9°W, 465 m above sea level, in Brazil. The nearest listed city is Brasília de Minas, 54 km away.

Topography around São Francisco

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

Within 3 km, the terrain around São Francisco has only modest variations in elevation — a maximum elevation change of 68 m around an average of 473 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 258 m; within 80 km, significant variations in elevation — a maximum elevation change of 474 m.

The land around São Francisco is covered by grassland (27%) and artificial surfaces (20%) within 3 km, shrubs (34%), grassland (28%) and trees (24%) within 16 km, and shrubs (49%), grassland (24%) and trees (23%) within 80 km.

3 km
68 m
16 km
258 m
80 km
474 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Brasília de Minas 54 km · Januária 75 km · São João da Ponte 92 km · Varzelândia 94 km · Urucuia 96 km · Coração de Jesus 98 km · Itacarambi 125 km · Arinos 133 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 Francisco (-15.9486°, -44.8644°, elevation 465 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).