Afuá weather in September

In September, Afuá sees average daytime highs of 32°C and overnight lows near 25°C, with 35 mm of rain across 9.1 wet days and about 12 hours of daylight. It is the 3rd-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 57% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Afuá's 1st-clearest and 2nd-windiest month. For the whole year in context, see Afuá's year-round climate.

Daytime high
32°
3rd warmest
Overnight low
25°
10th coldest
Rainfall
35 mm
9.1 wet days
Daylight
12 hours
6:16 AM – 6:16 PM
Cloud cover
41%
1st clearest
Wind
13 km/h
2nd windiest
Solar energy
6.17 kWh/m²
Travel score
4.3
out of 10

Afuá 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 32°C through the month.

A typical September day in Afuá reaches about 32°C in the afternoon and slips back to 25°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 33°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13225
23225
33225
43225
53225
63225
73225
83225
93225
103225
113225
123225
133225
143225
153225
163225
173225
183225
193225
203225
213225
223225
233225
243225
253225
263225
273225
283225
293225
303225

How September really feels in Afuá

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.

Afuá weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°32529.2123.0
Feb29° / 24°37027.1123.0
Mar29° / 24°43530.1122.9
Apr29° / 24°42029.2122.8
May30° / 24°37429.2122.9
Jun30° / 24°19325.4123.1
Jul31° / 24°15823.6123.4
Aug31° / 25°7818.1123.7
Sep32° / 25°359.1124.3
Oct32° / 25°255.3124.3
Nov32° / 25°478124.1
Dec31° / 25°15821.5123.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 27% of September, with mostly cloudy or overcast conditions the remaining 16%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18614
28515
38515
48515
58515
68515
78515
88416
98416
108416
118416
128515
138515
148515
158416
168416
178416
188317
198317
208317
218218
228317
238317
248317
258218
268218
278119
288119
298119
308020

Chance of precipitation in September

Any precipitation

Afuá gets around 35 mm of rain over 9.1 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 30% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
143
243
342
441
541
640
740
839
938
1038
1137
1236
1335
1433
1532
1631
1729
1828
1927
2025
2124
2223
2321
2420
2519
2618
2718
2817
2917
3017

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 61% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
14555
24654
34852
44951
54951
65050
75149
85248
95248
105347
115446
125545
135644
145743
155842
166040
176139
186337
196436
206634
216832
226931
237129
247228
257327
267426
277525
287624
297723
307723

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 hours at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over September. Sunrise moves from 6:21 AM to 6:11 AM, and sunset from 6:21 PM to 6:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:216:21
212.06:216:21
312.06:216:21
412.06:206:20
512.06:206:20
612.06:206:19
712.06:196:19
812.06:196:19
912.06:196:18
1012.06:186:18
1112.06:186:18
1212.06:176:17
1312.06:176:17
1412.06:176:17
1512.06:166:16
1612.06:166:16
1712.06:166:15
1812.06:156:15
1912.06:156:15
2012.06:146:14
2112.06:146:14
2212.06:146:14
2312.06:136:13
2412.06:136:13
2512.06:136:13
2612.06:126:12
2712.06:126:12
2812.06:126:12
2912.06:116:11
3012.06:116:11

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.17 kWh/m².

For context, solar energy here swings from a low near 3.8 kWh/m² to a high of 6.25 kWh/m² in October across the year — September's 6.17 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Intense
56.0Intense
66.0Intense
76.0Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Afuá

In seasonPeak

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

Afuá's monsoon runs January–May, 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 Afuá?

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

4.3
Sightseeing
1st-best month of the year
6.8
Beach & pool
2nd-best month of the year

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

What to pack for Afuá in September

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

In September, Afuá sees daytime highs around 32°C and nights near 25°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

Sea temperature near Afuá in September

The nearest coast averages about 29°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in October at about 30°C and coldest in March near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb28Tropical
Mar28Tropical
Apr28Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct30Tropical
Nov30Tropical
Dec29Tropical

UV index in Afuá in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Afuá peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 11 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 14UV 15Aug 11UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Afuá 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 Afuá is worst in February — around 21 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (July, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2021 µg/m³Jul 177 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb21Moderate
Mar21Moderate
Apr17Moderate
May9Good
Jun7Good
Jul7Good
Aug7Good
Sep9Good
Oct12Good
Nov12Moderate
Dec14Moderate
Location & terrain

Where is Afuá?

Afuá sits at 0.2°S, 50.4°W, 1 m above sea level, in Brazil. The nearest listed city is Chaves, 44 km away.

Topography around Afuá

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

Within 3 km, the terrain around Afuá has only modest variations in elevation — a maximum elevation change of 28 m around an average of 13 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 31 m; within 80 km, only modest variations in elevation — a maximum elevation change of 41 m.

The land around Afuá is covered by trees (70%) and water (26%) within 3 km, trees (60%) and water (37%) within 16 km, and trees (61%) and water (28%) within 80 km.

3 km
28 m
16 km
31 m
80 km
41 m
treesgrasslandartificial surfaceswaterwetland
September weather nearby: Chaves 44 km · Macapá 79 km · Santana 89 km · Mazagão 100 km · Anajás 105 km · Porto Grande 150 km · Breves 170 km · Cachoeira do Arari 185 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 Afuá (-0.1567°, -50.3867°, elevation 1 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).