Mata Roma weather in September

In September, Mata Roma sees average daytime highs of 36°C and overnight lows near 24°C, with 2 mm of rain across 0.6 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 36°C through the month. The sky is clear or mostly clear about 75% of the time in September, and the air most often feels muggy.

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 Mata Roma's 1st-clearest and 3rd-windiest month. For the whole year in context, see Mata Roma's year-round climate.

Daytime high
36°
3rd warmest
Overnight low
24°
9th coldest
Rainfall
2 mm
0.6 wet days
Daylight
12 hours
5:47 AM – 5:46 PM
Cloud cover
32%
1st clearest
Wind
13 km/h
3rd windiest
Solar energy
6.5 kWh/m²
Travel score
2.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 36°C through the month.

A typical September day in Mata Roma reaches about 36°C in the afternoon and slips back to 24°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 34°C and 37°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)
13524
23524
33524
43524
53524
63524
73524
83524
93524
103524
113524
123524
133624
143624
153624
163624
173624
183624
193624
203624
213624
223624
233624
243624
253624
263624
273624
283624
293624
303624

How September really feels in Mata Roma

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
1 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.

Mata Roma 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
Jan33° / 24°1752012.22.8
Feb31° / 24°22922.612.12.8
Mar31° / 23°28227.5122.6
Apr31° / 23°28025.211.92.8
May31° / 23°17318.511.83.5
Jun31° / 23°408.511.84.5
Jul32° / 23°203.811.84.5
Aug34° / 24°40.911.93.8
Sep36° / 24°20.6122.9
Oct36° / 25°111.312.12.4
Nov36° / 25°223.112.22.4
Dec35° / 25°558.212.22.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 75% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 8%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1964
2964
3955
4955
5955
6955
7955
8955
9946
10946
11946
12937
13937
14937
15937
16928
17928
18928
19928
209010
219010
229010
239010
249010
259010
269010
279010
289010
299010
309010

Chance of precipitation in September

Any precipitation

Mata Roma gets around 2 mm of rain over 0.6 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 2% and peaks near 3% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
81
91
102
112
122
132
142
152
162
172
182
192
203
213
223
233
243
253
263
273
283
293
303

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 80% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
137720
237819
337819
447818
547917
648016
748016
848115
948115
1048115
1148115
1248115
1348115
1448115
1548115
1648115
1748115
1848115
1948016
2048016
2148016
2248016
2348016
2448016
2548016
2648016
2738116
2838116
2938116
3038116

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

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 5:54 AM to 5:41 AM, and sunset from 5:50 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:545:50
211.95:545:50
311.95:535:50
411.95:535:49
511.95:525:49
611.95:525:49
712.05:525:49
812.05:515:48
912.05:515:48
1012.05:505:48
1112.05:505:48
1212.05:495:47
1312.05:495:47
1412.05:485:47
1512.05:485:46
1612.05:475:46
1712.05:475:46
1812.05:465:46
1912.05:465:45
2012.05:455:45
2112.05:455:45
2212.05:455:45
2312.05:445:44
2412.05:445:44
2512.05:435:44
2612.05:435:44
2712.05:425:43
2812.05:425:43
2912.05:415:43
3012.05:415:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.5 kWh/m².

For context, solar energy here swings from a low near 4.56 kWh/m² to a high of 6.61 kWh/m² in October across the year — September's 6.5 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.4Intense
106.4Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
Planning a trip in September

Hazard calendar for Mata Roma

In seasonPeak

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

Mata Roma'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 Mata Roma?

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

2.9
Sightseeing
5th-best month of the year
6.5
Beach & pool
4th-best month of the year

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

What to pack for Mata Roma in September

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

In September, Mata Roma sees daytime highs around 36°C and nights near 24°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Mata Roma 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 Mata Roma peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 15Jul 14UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct11Extreme
Nov11Extreme
Dec11Extreme

Air quality in Mata Roma 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 Mata Roma is worst in November — around 21 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (June, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1920 µg/m³Jun 119 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar14Moderate
Apr12Moderate
May9Good
Jun9Good
Jul12Moderate
Aug10Good
Sep10Good
Oct15Moderate
Nov21Moderate
Dec19Moderate
Location & terrain

Where is Mata Roma?

Mata Roma sits at 3.6°S, 43.1°W, 77 m above sea level, in Brazil. The nearest listed city is Chapadinha, 31 km away.

Topography around Mata Roma

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

Within 3 km, the terrain around Mata Roma has only modest variations in elevation — a maximum elevation change of 36 m around an average of 85 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 68 m; within 80 km, only modest variations in elevation — a maximum elevation change of 138 m.

The land around Mata Roma is covered by trees (61%) within 3 km, trees (60%) within 16 km, and trees (74%) within 80 km.

3 km
36 m
16 km
68 m
80 km
138 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Chapadinha 31 km · Brejo 41 km · Buriti 41 km · São Benedito do Rio Preto 57 km · Urbano Santos 57 km · Santa Quitéria do Maranhão 63 km · Miguel Alves 65 km · Coelho Neto 71 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 Mata Roma (-3.625°, -43.1111°, elevation 77 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).