Viçosa weather in September

In September, Viçosa sees average daytime highs of 27°C and overnight lows near 16°C, with 53 mm of rain across 7.5 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 27°C through the month. The sky is clear or mostly clear about 35% 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 Viçosa's 4th-clearest and 1st-windiest month. For the whole year in context, see Viçosa's year-round climate.

Daytime high
27°
8th warmest
Overnight low
16°
5th coldest
Rainfall
53 mm
7.5 wet days
Daylight
11 h 54 min
6:49 AM – 6:42 PM
Cloud cover
56%
4th clearest
Wind
10 km/h
1st windiest
Solar energy
4.85 kWh/m²
Travel score
7.0
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Viçosa reaches about 27°C in the afternoon and slips back to 16°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 31°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)
12615
22615
32615
42615
52616
62616
72616
82616
92616
102716
112716
122716
132716
142716
152716
162716
172716
182716
192717
202717
212717
222717
232717
242717
252717
262717
272717
282717
292717
302717

Viçosa 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
Jan29° / 20°22616.813.14.6
Feb29° / 20°11611.912.74.8
Mar28° / 19°13215.912.15.0
Apr27° / 18°609.611.56.5
May25° / 16°345.3117.5
Jun24° / 14°122.510.88.3
Jul24° / 14°82.110.98.5
Aug25° / 14°162.811.38.1
Sep27° / 16°537.511.97.0
Oct27° / 18°9211.112.56.1
Nov27° / 19°20618.2135.0
Dec28° / 20°24420.113.24.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% 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 51%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16436
26436
36436
46337
56238
66139
76040
85941
95842
105644
115446
125347
135149
145050
154951
164852
174654
184555
194456
204258
214060
224060
233961
243961
253862
263763
273664
283664
293565
303565

Chance of precipitation in September

Any precipitation

Viçosa gets around 53 mm of rain over 7.5 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 34% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
114
214
315
415
516
617
717
818
919
1020
1121
1222
1323
1424
1525
1626
1727
1827
1928
2029
2130
2231
2331
2432
2532
2633
2733
2833
2933
3034

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 42% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13648150
23648151
33648161
43548171
53547171
63447181
73346191
83246201
93146221
103046232
112845242
122745262
132645273
142445283
152344294
162244304
172044315
181943325
191843336
201742346
211741357
221640368
231539378
241538389
2515373910
2614354011
2714344111
2814334112
2913324212
3013314313

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 7:04 AM to 6:36 AM, and sunset from 6:39 PM to 6:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:046:39
211.67:036:39
311.67:026:39
411.67:016:39
511.77:006:40
611.76:596:40
711.76:586:40
811.76:576:40
911.76:566:41
1011.86:556:41
1111.86:546:41
1211.86:536:41
1311.86:526:42
1411.86:516:42
1511.96:506:42
1611.96:496:42
1711.96:486:43
1811.96:476:43
1911.96:466:43
2012.06:456:43
2112.06:446:44
2212.06:436:44
2312.06:436:44
2412.06:426:44
2512.16:416:45
2612.16:406:45
2712.16:396:45
2812.16:386:45
2912.16:376:46
3012.26:366:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.85 kWh/m².

For context, solar energy here swings from a low near 3.53 kWh/m² to a high of 5.96 kWh/m² in February across the year — September's 4.85 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Viçosa

In seasonPeak

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

Viçosa'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 Viçosa?

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
6.9
Beach & pool
4th-best month of the year

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

What to pack for Viçosa in September

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

In September, Viçosa sees daytime highs around 27°C and nights near 16°C. Worth packing: light clothes and sun protection. About 8 days see rain.

light clothessun protection

UV index in Viçosa 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 Viçosa 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
Feb15Extreme
Mar13Extreme
Apr10Extreme
May7Very high
Jun7High
Jul7High
Aug9Very high
Sep10Extreme
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Viçosa 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 Viçosa is worst in September — around 15 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (March, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1715 µg/m³Mar 168 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar8Good
Apr9Good
May10Good
Jun10Good
Jul10Good
Aug11Good
Sep15Moderate
Oct12Good
Nov9Good
Dec9Good
Location & terrain

Where is Viçosa?

Viçosa sits at 20.8°S, 42.9°W, 656 m above sea level, in Brazil. The nearest listed city is Ervália, 25 km away.

Topography around Viçosa

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

Within 3 km, the terrain around Viçosa has only modest variations in elevation — a maximum elevation change of 231 m around an average of 701 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 402 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,787 m.

The land around Viçosa is covered by trees (40%), grassland (35%) and artificial surfaces (24%) within 3 km, grassland (49%) and trees (46%) within 16 km, and grassland (57%) and trees (42%) within 80 km.

3 km
231 m
16 km
402 m
80 km
1,787 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Ervália 25 km · Visconde do Rio Branco 29 km · Ponte Nova 38 km · Ubá 41 km · Piranga 44 km · Tocantins 49 km · Rio Pomba 66 km · Muriaé 68 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 Viçosa (-20.7539°, -42.8819°, elevation 656 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).