Apuí weather in September

In September, Apuí sees average daytime highs of 33°C and overnight lows near 23°C, with 138 mm of rain across 20 wet days and about 12 hours of daylight. It is the 3rd-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 19% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Apuí's 4th-clearest and 4th-windiest month. For the whole year in context, see Apuí's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
23°
12th coldest
Rainfall
138 mm
20 wet days
Daylight
12 hours
5:55 AM – 5:53 PM
Cloud cover
66%
4th clearest
Wind
5 km/h
4th windiest
Solar energy
5.22 kWh/m²
Travel score
2.8
out of 10

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 Apuí reaches about 33°C in the afternoon and slips back to 23°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 36°C. Set against its neighbours, September runs about 1°C cooler than August and about 1°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13323
23323
33323
43323
53323
63323
73323
83323
93323
103323
113323
123323
133323
143323
153323
163323
173323
183323
193323
203323
213323
223323
233223
243223
253223
263223
273223
283223
293223
303223

How September really feels in Apuí

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.

Apuí weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°3533012.42.7
Feb30° / 23°33627.112.22.7
Mar30° / 23°36029.9122.7
Apr30° / 23°27328.411.82.7
May30° / 22°16824.711.73.3
Jun31° / 22°5410.911.64.4
Jul33° / 22°356.411.64.1
Aug34° / 23°579.811.83.1
Sep33° / 23°13820122.8
Oct32° / 23°20124.912.22.6
Nov31° / 23°2482712.32.6
Dec30° / 23°31429.512.42.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 60%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25347
35149
45050
54852
64753
74555
84555
94456
104258
114258
124060
133961
143862
153961
163862
173763
183664
193664
203466
213466
223466
233367
243367
253367
263367
273367
283367
293268
303268

Chance of precipitation in September

Any precipitation

Apuí gets around 138 mm of rain over 20 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 65% and peaks near 74% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
153
254
355
456
557
658
758
859
959
1060
1160
1261
1362
1463
1564
1665
1766
1868
1969
2070
2171
2272
2373
2473
2574
2674
2774
2874
2973
3073

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 80% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
12418742
22417752
31417762
41416763
51416763
61416763
71415764
81415764
90415774
100414775
110414775
120413776
130413776
140412786
150311797
160311797
170310807
18039808
19039808
20038818
21027838
22027838
23026848
24026848
25025858
26025849
27014869
28014869
29014869
30014869

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 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 12 minutes over September. Sunrise moves from 6:03 AM to 5:47 AM, and sunset from 5:55 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:035:55
211.96:035:55
311.96:025:55
411.96:025:55
511.96:015:55
611.96:015:54
711.96:005:54
811.96:005:54
911.95:595:54
1011.95:585:54
1111.95:585:54
1211.95:575:53
1311.95:575:53
1411.95:565:53
1512.05:565:53
1612.05:555:53
1712.05:545:53
1812.05:545:52
1912.05:535:52
2012.05:535:52
2112.05:525:52
2212.05:525:52
2312.05:515:52
2412.05:505:51
2512.05:505:51
2612.05:495:51
2712.05:495:51
2812.05:485:51
2912.05:485:51
3012.15:475:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.22 kWh/m².

For context, solar energy here swings from a low near 4.16 kWh/m² to a high of 5.31 kWh/m² in October across the year — September's 5.22 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in September

Hazard calendar for Apuí

In seasonPeak

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

Apuí's rainy season runs October–May, 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 Apuí?

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

2.8
Sightseeing
5th-best month of the year
4.8
Beach & pool
4th-best month of the year

September is a weaker month for outdoor sightseeing in Apuí.

What to pack for Apuí in September

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

In September, Apuí sees daytime highs around 33°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Apuí in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Apuí peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 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 highExtremeMar 14UV 15Sep 15UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul9Very high
Aug9Very high
Sep6High
Oct10Very high
Nov12Extreme
Dec12Extreme

Air quality in Apuí 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 Apuí is worst in August — around 181 µg/m³ PM2.5 (very unhealthy), about 22.6× the cleanest month (June, 8 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecGoodUnhealthyUnhealthyModerateAug 16167 µg/m³Jun 98 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb12Good
Mar12Good
Apr11Good
May9Good
Jun8Good
Jul67Unhealthy
Aug181Very unhealthy
Sep65Unhealthy
Oct25Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Apuí?

Apuí sits at 7.2°S, 59.9°W, 156 m above sea level, in Brazil. The nearest listed city is Manicoré, 219 km away.

JacareacangaColnizaBorbaAripuanãMachadinho d'OesteHumaitá

Topography around Apuí

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

Within 3 km, the terrain around Apuí has only modest variations in elevation — a maximum elevation change of 111 m around an average of 130 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 186 m; within 80 km, significant variations in elevation — a maximum elevation change of 274 m.

The land around Apuí is covered by trees (49%) and grassland (46%) within 3 km, trees (61%) and grassland (39%) within 16 km, and trees (93%) within 80 km.

3 km
111 m
16 km
186 m
80 km
274 m
treesgrasslandartificial surfaces
September weather nearby: Manicoré 219 km · Novo Aripuanã 237 km · Jacareacanga 260 km · Colniza 264 km · Borba 314 km · Aripuanã 335 km · Machadinho d'Oeste 340 km · Humaitá 348 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 Apuí (-7.1972°, -59.8914°, elevation 156 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).