Maraã weather in September

In September, Maraã sees average daytime highs of 31°C and overnight lows near 23°C, with 161 mm of rain across 24.5 wet days and about 12 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 11% of the time in September, and the air most often feels miserable.

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 Maraã's 3rd-clearest and 10th-windiest month. For the whole year in context, see Maraã's year-round climate.

Daytime high
31°
1st warmest
Overnight low
23°
5th coldest
Rainfall
161 mm
24.5 wet days
Daylight
12 hours
6:17 AM – 6:16 PM
Cloud cover
71%
3rd clearest
Wind
4 km/h
10th windiest
Solar energy
5.19 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 31°C through the month.

A typical September day in Maraã reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°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)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283124
293124
303124

How September really feels in Maraã

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.

Maraã weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°2562512.12.9
Feb31° / 24°24322.212.12.9
Mar31° / 24°31327.6122.7
Apr30° / 24°34327.5122.7
May30° / 23°36829.411.92.7
Jun30° / 23°26627.611.93.0
Jul30° / 23°19926.611.93.2
Aug31° / 23°15424.911.93.1
Sep31° / 23°16124.5122.8
Oct31° / 24°17925.2122.7
Nov31° / 24°20025.912.12.6
Dec31° / 24°25128.312.12.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13466
23367
33268
43268
53169
63070
73070
82971
92971
102971
112872
122971
132971
142872
152872
162872
172872
182872
192872
202872
212872
222872
232872
242971
253070
262971
272971
282971
292872
302872

Chance of precipitation in September

Any precipitation

Maraã gets around 161 mm of rain over 24.5 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 81% and peaks near 82% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
181
281
381
481
581
681
781
882
982
1082
1182
1282
1381
1481
1581
1681
1781
1881
1981
2081
2181
2281
2381
2481
2581
2680
2780
2880
2980
3079

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 77% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
12872
22872
32773
42773
52773
62773
72773
82674
92674
102674
112575
122575
132575
142476
152476
162377
172278
182278
192179
202179
212080
222080
231981
241981
251882
261882
271783
281783
291783
301684

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

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 6:23 AM to 6:11 AM, and sunset from 6:21 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:236:21
212.06:236:21
312.06:226:20
412.06:226:20
512.06:226:20
612.06:216:19
712.06:216:19
812.06:206:19
912.06:206:19
1012.06:196:18
1112.06:196:18
1212.06:196:18
1312.06:186:17
1412.06:186:17
1512.06:176:17
1612.06:176:16
1712.06:166:16
1812.06:166:16
1912.06:166:15
2012.06:156:15
2112.06:156:15
2212.06:146:14
2312.06:146:14
2412.06:146:14
2512.06:136:13
2612.06:136:13
2712.06:126:13
2812.06:126:13
2912.06:126:12
3012.06:116:12

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.19 kWh/m².

For context, solar energy here swings from a low near 3.68 kWh/m² to a high of 5.24 kWh/m² in October across the year — September's 5.19 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
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

Is September a good time to visit Maraã?

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

2.8
Sightseeing
6th-best month of the year
4.3
Beach & pool
3rd-best month of the year

September is a weaker month for outdoor sightseeing in Maraã.

What to pack for Maraã in September

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

In September, Maraã sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

UV index in Maraã in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Maraã peaks around January 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeJan 23UV 14Jul 15UV 10
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep11Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme

Air quality in Maraã 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 Maraã is worst in March — around 19 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (June, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1619 µg/m³Jun 1510 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb16Moderate
Mar19Moderate
Apr16Moderate
May11Good
Jun10Good
Jul11Good
Aug15Moderate
Sep14Moderate
Oct14Moderate
Nov14Moderate
Dec14Moderate
Location & terrain

Where is Maraã?

Maraã sits at 1.9°S, 65.6°W, 54 m above sea level, in Brazil. The nearest listed city is Fonte Boa, 93 km away.

São Gabriel da CachoeiraTonantinsSanto Antônio do IçáBarcelos

Topography around Maraã

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

Within 3 km, the terrain around Maraã has only modest variations in elevation — a maximum elevation change of 40 m around an average of 48 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 49 m; within 80 km, only modest variations in elevation — a maximum elevation change of 60 m.

The land around Maraã is covered by trees (69%) and water (26%) within 3 km, trees (83%) within 16 km, and trees (94%) within 80 km.

3 km
40 m
16 km
49 m
80 km
60 m
treesgrasslandartificial surfaceswaterwetland
September weather nearby: Fonte Boa 93 km · Uarini 137 km · Alvarães 174 km · Tefé 193 km · São Gabriel da Cachoeira 256 km · Tonantins 272 km · Santo Antônio do Içá 297 km · Barcelos 310 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 Maraã (-1.853°, -65.5743°, elevation 54 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).