Matões do Norte weather in September

In September, Matões do Norte sees average daytime highs of 35°C and overnight lows near 24°C, with 7 mm of rain across 1.2 wet days and about 12 hours of daylight. It is the 3rd-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 70% 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 hours by month's end. Set against the rest of the year, September is Matões do Norte's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Matões do Norte's year-round climate.

Daytime high
35°
3rd warmest
Overnight low
24°
9th coldest
Rainfall
7 mm
1.2 wet days
Daylight
12 hours
5:53 AM – 5:52 PM
Cloud cover
35%
2nd clearest
Wind
10 km/h
2nd windiest
Solar energy
6.28 kWh/m²
Travel score
3.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 35°C through the month.

A typical September day in Matões do Norte reaches about 35°C in the afternoon and slips back to 24°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 36°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13424
23424
33424
43424
53424
63424
73424
83524
93524
103524
113524
123524
133524
143524
153524
163524
173524
183524
193525
203525
213525
223525
233525
243525
253525
263525
273525
283525
293525
303525

How September really feels in Matões do Norte

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
10 feel dangerously hot (≥ 39°C)
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.

Matões do Norte weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°2662412.22.6
Feb31° / 24°29124.612.12.5
Mar31° / 24°35528.7122.4
Apr31° / 24°33327.511.92.5
May31° / 24°16620.311.83.3
Jun32° / 23°529.911.84.3
Jul32° / 23°285.711.84.5
Aug34° / 23°71.811.94.1
Sep35° / 24°71.2123.4
Oct35° / 25°163.412.12.9
Nov35° / 25°466.712.22.8
Dec34° / 25°10613.812.22.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 70% 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 9%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1928
2928
3928
4928
5928
6928
7928
8928
9928
10919
11919
12919
13919
14919
159010
169010
179010
189010
199010
209010
219010
229010
239010
249010
259010
269010
278911
288911
298812
308713

Chance of precipitation in September

Any precipitation

Matões do Norte gets around 7 mm of rain over 1.2 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 5% and peaks near 6% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
14
24
34
44
54
64
74
84
94
104
114
124
134
144
154
165
175
185
195
205
215
225
235
245
255
265
275
285
296
306

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 73% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
112574
212574
312673
412772
512871
612970
713069
813069
913168
1013168
1113168
1213168
1313168
1413168
1513069
1612970
1712970
1812871
1912772
2012673
2112574
2202476
2302476
2402377
2502278
2602278
2702179
2802179
2902179
3002179

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min 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 6 minutes over September. Sunrise moves from 6:00 AM to 5:47 AM, and sunset from 5:56 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:005:56
211.96:005:56
311.95:595:55
411.95:595:55
511.95:585:55
611.95:585:55
711.95:575:54
812.05:575:54
912.05:565:54
1012.05:565:54
1112.05:565:53
1212.05:555:53
1312.05:555:53
1412.05:545:52
1512.05:545:52
1612.05:535:52
1712.05:535:52
1812.05:525:51
1912.05:525:51
2012.05:515:51
2112.05:515:51
2212.05:505:50
2312.05:505:50
2412.05:495:50
2512.05:495:50
2612.05:485:49
2712.05:485:49
2812.05:485:49
2912.05:475:49
3012.05:475:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.28 kWh/m².

For context, solar energy here swings from a low near 4.38 kWh/m² to a high of 6.35 kWh/m² in October across the year — September's 6.28 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.4Intense
266.4Intense
276.4Intense
286.4Intense
296.4Intense
306.4Intense
Planning a trip in September

Hazard calendar for Matões do Norte

In seasonPeak

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

Matões do Norte'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 Matões do Norte?

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

3.4
Sightseeing
4th-best month of the year
7.0
Beach & pool
3rd-best month of the year

September is a weaker month for outdoor sightseeing in Matões do Norte. The water and warmth also suit a beach or pool day.

What to pack for Matões do Norte in September

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

In September, Matões do Norte sees daytime highs around 35°C and nights near 24°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Matões do Norte 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 Matões do Norte peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 17 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jul 17UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Matões do Norte 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 Matões do Norte is worst in October — around 25 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (June, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 2125 µg/m³Jun 199 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb16Moderate
Mar15Moderate
Apr13Moderate
May10Good
Jun8Good
Jul9Good
Aug12Good
Sep16Moderate
Oct25Moderate
Nov23Moderate
Dec17Moderate
Location & terrain

Where is Matões do Norte?

Matões do Norte sits at 3.6°S, 44.6°W, 42 m above sea level, in Brazil. The nearest listed city is Miranda do Norte, 8.0 km away.

Topography around Matões do Norte

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

Within 3 km, the terrain around Matões do Norte has only modest variations in elevation — a maximum elevation change of 38 m around an average of 43 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 103 m; within 80 km, only modest variations in elevation — a maximum elevation change of 123 m.

The land around Matões do Norte is covered by grassland (70%) and trees (26%) within 3 km, trees (49%) and grassland (47%) within 16 km, and trees (42%) and grassland (42%) within 80 km.

3 km
38 m
16 km
103 m
80 km
123 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Miranda do Norte 8.0 km · Cantanhede 20 km · Arari 32 km · Itapecuru Mirim 34 km · Pirapemas 38 km · Vitória do Mearim 40 km · Anajatuba 42 km · São Mateus do Maranhão 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 Matões do Norte (-3.6322°, -44.5558°, elevation 42 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).