Alfenas weather in September

In September, Alfenas sees average daytime highs of 28°C and overnight lows near 16°C, with 64 mm of rain across 7.3 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 28°C through the month. The sky is clear or mostly clear about 43% 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 Alfenas's 4th-clearest and 1st-windiest month. For the whole year in context, see Alfenas's year-round climate.

Daytime high
28°
7th warmest
Overnight low
16°
5th coldest
Rainfall
64 mm
7.3 wet days
Daylight
11 h 54 min
7:02 AM – 6:54 PM
Cloud cover
49%
4th clearest
Wind
8 km/h
1st windiest
Solar energy
5.38 kWh/m²
Travel score
6.9
out of 10

Alfenas 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 Alfenas 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)
12714
22714
32715
42715
52715
62715
72715
82715
92715
102815
112815
122815
132816
142816
152816
162816
172816
182816
192816
202816
212816
222816
232816
242816
252816
262816
272816
282817
292817
302817

Alfenas 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
Jan28° / 20°24521.913.24.2
Feb29° / 20°15016.512.74.5
Mar28° / 19°14116.712.25.1
Apr27° / 17°537.811.56.8
May25° / 14°394.8117.8
Jun24° / 13°162.910.78.4
Jul24° / 12°152.410.88.6
Aug26° / 13°183.111.38.2
Sep28° / 16°647.311.96.9
Oct28° / 18°9512.512.55.5
Nov28° / 19°17217.8135.0
Dec28° / 19°20321.213.34.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% 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 41%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17228
27228
37129
47129
57030
66832
76733
86634
96634
106436
116337
126238
136139
145941
155941
165842
175743
185743
195644
205446
215446
225347
235248
245149
255149
265050
274852
284753
294753
304753

Chance of precipitation in September

Any precipitation

Alfenas gets around 64 mm of rain over 7.3 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 35% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
116
216
316
417
517
617
717
818
919
1019
1120
1221
1321
1422
1523
1624
1725
1826
1927
2028
2129
2230
2331
2432
2533
2634
2734
2835
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 39% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15832100
25732110
35533120
45533120
55334130
65234140
75035150
84935160
94736170
104636180
114437190
124337201
134137211
144038221
153838231
163738241
173638251
183538262
193337272
203237292
213137303
223036313
232935323
242834334
252734355
262633365
272532376
282431387
292331387
302330398

Wind in September

Winds average 8 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 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
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 7:16 AM to 6:48 AM, and sunset from 6:51 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:166:51
211.67:166:51
311.67:156:51
411.67:146:51
511.67:136:52
611.77:126:52
711.77:116:52
811.77:106:52
911.77:096:53
1011.87:086:53
1111.87:076:53
1211.87:066:53
1311.87:056:54
1411.87:046:54
1511.97:036:54
1611.97:026:54
1711.97:016:55
1811.97:006:55
1911.96:596:55
2012.06:586:56
2112.06:576:56
2212.06:566:56
2312.06:556:56
2412.06:546:57
2512.16:536:57
2612.16:526:57
2712.16:516:57
2812.16:506:58
2912.26:496:58
3012.26:486:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.38 kWh/m².

For context, solar energy here swings from a low near 3.75 kWh/m² to a high of 5.7 kWh/m² in February across the year — September's 5.38 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
Planning a trip in September

Hazard calendar for Alfenas

In seasonPeak

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

Alfenas'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 Alfenas?

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

6.9
Sightseeing
5th-best month of the year
7.2
Beach & pool
3rd-best month of the year

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

What to pack for Alfenas in September

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

In September, Alfenas 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 Alfenas 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 Alfenas peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 20UV 15Jun 23UV 6
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct12Extreme
Nov14Extreme
Dec15Extreme

Air quality in Alfenas 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 Alfenas is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1517 µg/m³Nov 238 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar9Good
Apr10Good
May10Good
Jun10Good
Jul10Good
Aug12Moderate
Sep17Moderate
Oct12Good
Nov8Good
Dec8Good
Location & terrain

Where is Alfenas?

Alfenas sits at 21.4°S, 45.9°W, 887 m above sea level, in Brazil. The nearest listed city is Paraguaçu, 25 km away.

Topography around Alfenas

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

Within 3 km, the terrain around Alfenas has only modest variations in elevation — a maximum elevation change of 144 m around an average of 843 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 219 m; within 80 km, large variations in elevation — a maximum elevation change of 1,079 m.

The land around Alfenas is covered by artificial surfaces (39%) and cropland (23%) within 3 km, cropland (35%), trees (28%) and grassland (25%) within 16 km, and trees (40%) and grassland (39%) within 80 km.

3 km
144 m
16 km
219 m
80 km
1,079 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Paraguaçu 25 km · Machado 27 km · Campos Gerais 29 km · Poço Fundo 39 km · Campestre 44 km · Elói Mendes 44 km · Três Pontas 46 km · Carmo do Rio Claro 54 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 Alfenas (-21.4292°, -45.9472°, elevation 887 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).