Guaçuí weather in September

In September, Guaçuí sees average daytime highs of 25°C and overnight lows near 15°C, with 74 mm of rain across 10 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 25°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 Guaçuí's 4th-clearest and 1st-windiest month. For the whole year in context, see Guaçuí's year-round climate.

Daytime high
25°
8th warmest
Overnight low
15°
5th coldest
Rainfall
74 mm
10 wet days
Daylight
11 h 54 min
6:45 AM – 6:38 PM
Cloud cover
56%
4th clearest
Wind
8 km/h
1st windiest
Solar energy
4.87 kWh/m²
Travel score
6.8
out of 10

Guaçuí 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 25°C through the month.

A typical September day in Guaçuí reaches about 25°C in the afternoon and slips back to 15°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°151015202530
Avg high (°C)Avg low (°C)
12515
22515
32515
42515
52515
62515
72515
82515
92515
102515
112515
122515
132515
142515
152515
162516
172516
182516
192516
202516
212516
222516
232516
242516
252516
262516
272516
282516
292516
302516

Guaçuí 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°19516.413.14.7
Feb29° / 19°13612.712.74.8
Mar28° / 19°19618.712.14.9
Apr26° / 17°10514.211.55.9
May24° / 15°569.5117.0
Jun24° / 14°27610.87.7
Jul24° / 14°225.610.97.8
Aug24° / 14°275.811.37.8
Sep25° / 15°741011.96.8
Oct26° / 17°12813.712.55.9
Nov26° / 18°23319134.9
Dec27° / 19°27821.513.24.6

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 (%)
16238
26238
36238
46238
56139
66139
75941
85941
95743
105545
115545
125446
135248
145149
155050
164951
174753
184654
194456
204357
214258
224159
234060
243961
253862
263862
273763
283763
293763
303565

Chance of precipitation in September

Any precipitation

Guaçuí gets around 74 mm of rain over 10 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 33% and peaks near 42% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
122
223
323
424
525
625
726
827
927
1028
1129
1230
1330
1431
1532
1633
1733
1834
1935
2036
2137
2238
2339
2440
2540
2641
2741
2842
2942
3042

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 44% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12152261
22152261
32152261
42151271
52052271
62051281
72050291
81950301
91949312
101848322
111748332
121647343
131547353
141447363
151346374
161246384
171245385
181144396
191143406
201042417
211041418
221040429
23939429
249384310
259364311
269354412
278344413
288334514
298334514
307324615

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.

0246810151015202530
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 6:59 AM to 6:31 AM, and sunset from 6:34 PM to 6:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:596:34
211.66:586:34
311.66:576:34
411.66:566:35
511.76:556:35
611.76:546:35
711.76:536:35
811.76:526:36
911.76:516:36
1011.86:506:36
1111.86:496:36
1211.86:486:37
1311.86:486:37
1411.86:476:37
1511.96:466:37
1611.96:456:38
1711.96:446:38
1811.96:436:38
1911.96:426:38
2012.06:416:38
2112.06:406:39
2212.06:396:39
2312.06:386:39
2412.06:376:39
2512.16:366:40
2612.16:356:40
2712.16:346:40
2812.16:336:41
2912.16:326:41
3012.26:316:41

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.87 kWh/m².

For context, solar energy here swings from a low near 3.54 kWh/m² to a high of 6.05 kWh/m² in February across the year — September's 4.87 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.9Bright
304.9Bright
Planning a trip in September

Hazard calendar for Guaçuí

In seasonPeak

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

Guaçuí'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 Guaçuí?

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

6.8
Sightseeing
5th-best month of the year
6.3
Beach & pool
4th-best month of the year

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

What to pack for Guaçuí in September

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

In September, Guaçuí sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Guaçuí 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 Guaçuí 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 Guaçuí?

Guaçuí sits at 20.8°S, 41.7°W, 597 m above sea level, in Brazil. The nearest listed city is Alegre, 15 km away.

Topography around Guaçuí

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

Within 3 km, the terrain around Guaçuí has significant variations in elevation — a maximum elevation change of 340 m around an average of 663 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,092 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,840 m.

The land around Guaçuí is covered by grassland (56%) and trees (36%) within 3 km, grassland (59%) and trees (39%) within 16 km, and grassland (54%) and trees (45%) within 80 km.

3 km
340 m
16 km
1,092 m
80 km
2,840 m
treesgrasslandartificial surfaces
September weather nearby: Alegre 15 km · Espera Feliz 27 km · Carangola 37 km · Bom Jesus do Itabapoana 40 km · Natividade 43 km · Porciúncula 43 km · Muniz Freire 44 km · Mimoso do Sul 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 Guaçuí (-20.7756°, -41.6794°, elevation 597 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).