Alegre weather in September

In September, Alegre sees average daytime highs of 26°C and overnight lows near 16°C, with 78 mm of rain across 10.9 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 26°C through the month. The sky is clear or mostly clear about 35% of the time in September, and the air most often feels humid.

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 Alegre's 4th-clearest and 1st-windiest month. For the whole year in context, see Alegre's year-round climate.

Daytime high
26°
8th warmest
Overnight low
16°
4th coldest
Rainfall
78 mm
10.9 wet days
Daylight
11 h 54 min
6:44 AM – 6:37 PM
Cloud cover
56%
4th clearest
Wind
7 km/h
1st windiest
Solar energy
4.85 kWh/m²
Travel score
6.6
out of 10

Alegre 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 26°C through the month.

A typical September day in Alegre reaches about 26°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 20°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)
12615
22615
32615
42615
52615
62615
72615
82615
92615
102615
112615
122615
132616
142616
152616
162616
172616
182616
192616
202616
212616
222616
232616
242616
252616
262616
272616
282616
292616
302617

Alegre 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°18315.113.14.6
Feb30° / 20°13211.812.74.7
Mar29° / 19°19117.812.14.7
Apr27° / 18°10714.211.55.9
May25° / 16°589.8116.9
Jun24° / 14°306.410.87.6
Jul24° / 14°276.310.97.8
Aug25° / 14°306.511.37.6
Sep26° / 16°7810.911.96.6
Oct27° / 17°13013.812.55.8
Nov27° / 18°23418.7134.9
Dec28° / 20°27420.513.24.5

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 15% of September, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16238
26238
36238
46238
56238
66139
76139
85941
95941
105743
115644
125446
135347
145149
155050
164852
174852
184654
194555
204456
214159
224159
234060
243961
253961
263862
273862
283763
293664
303664

Chance of precipitation in September

Any precipitation

Alegre gets around 78 mm of rain over 10.9 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 36% and peaks near 44% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
126
226
327
427
528
628
729
830
931
1032
1132
1233
1334
1435
1535
1636
1737
1838
1939
2040
2140
2241
2342
2442
2543
2643
2743
2844
2944
3044

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the humid band about 44% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11349362
21348363
31348363
41248373
51247373
61247384
71246384
81145394
91144405
101043425
111042436
12941446
13840457
14740467
15739478
16638479
17637489
186364810
196354811
206344812
216334813
226324814
236314815
246304816
255294817
265284818
275274819
285264820
295254821
305254821

Wind in September

Winds average 7 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
138calm
148calm
158calm
168calm
178calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:58 AM to 6:30 AM, and sunset from 6:33 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:586:33
211.66:576:34
311.66:576:34
411.66:566:34
511.76:556:34
611.76:546:35
711.76:536:35
811.76:526:35
911.76:516:35
1011.86:506:36
1111.86:496:36
1211.86:486:36
1311.86:476:36
1411.86:466:36
1511.96:456:37
1611.96:446:37
1711.96:436:37
1811.96:426:37
1911.96:416:38
2012.06:406:38
2112.06:396:38
2212.06:386:38
2312.06:376:39
2412.06:366:39
2512.16:356:39
2612.16:346:39
2712.16:336:40
2812.16:326:40
2912.16:316:40
3012.26:306:40

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 6.04 kWh/m² in February across the year — September's 4.85 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.9Bright
Planning a trip in September

Hazard calendar for Alegre

In seasonPeak

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

Alegre's rainy season runs October–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 Alegre?

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

6.6
Sightseeing
5th-best month of the year
6.3
Beach & pool
5th-best month of the year

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

What to pack for Alegre in September

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

In September, Alegre sees daytime highs around 26°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Alegre 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 Alegre peaks around February 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 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 11UV 15Jun 21UV 7
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun7High
Jul7High
Aug9Very high
Sep10Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme
Location & terrain

Where is Alegre?

Alegre sits at 20.8°S, 41.5°W, 248 m above sea level, in Brazil. The nearest listed city is Guaçuí, 15 km away.

Topography around Alegre

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

Within 3 km, the terrain around Alegre has significant variations in elevation — a maximum elevation change of 481 m around an average of 315 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,146 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,841 m.

The land around Alegre is covered by grassland (60%) and trees (35%) within 3 km, grassland (66%) and trees (33%) within 16 km, and grassland (53%) and trees (45%) within 80 km.

3 km
481 m
16 km
1,146 m
80 km
2,841 m
treesgrasslandartificial surfaceswetland
September weather nearby: Guaçuí 15 km · Muniz Freire 36 km · Mimoso do Sul 38 km · Castelo 40 km · Espera Feliz 41 km · Bom Jesus do Itabapoana 44 km · Cachoeiro de Itapemirim 45 km · Iúna 46 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 Alegre (-20.7636°, -41.5331°, elevation 248 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).