Itinga do Maranhão weather in September

In September, Itinga do Maranhão sees average daytime highs of 34°C and overnight lows near 23°C, with 11 mm of rain across 2 wet days and about 12 hours of daylight. It is the 1st-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 56% 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 Itinga do Maranhão's 3rd-clearest and 1st-windiest month. For the whole year in context, see Itinga do Maranhão's year-round climate.

Daytime high
34°
1st warmest
Overnight low
23°
9th coldest
Rainfall
11 mm
2 wet days
Daylight
12 hours
6:05 AM – 6:04 PM
Cloud cover
41%
3rd clearest
Wind
9 km/h
1st windiest
Solar energy
6.19 kWh/m²
Travel score
3.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 34°C through the month.

A typical September day in Itinga do Maranhão reaches about 34°C in the afternoon and slips back to 23°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 36°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13422
23422
33422
43422
53422
63422
73422
83422
93422
103422
113423
123423
133423
143423
153423
163423
173423
183423
193423
203423
213423
223423
233423
243423
253423
263423
273423
283423
293423
303423

How September really feels in Itinga do Maranhão

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.

Itinga do Maranhão weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°23626.212.22.9
Feb30° / 22°24425.412.12.8
Mar30° / 22°28628.9122.7
Apr30° / 22°20325.611.92.9
May31° / 22°9916.411.83.8
Jun32° / 22°184.511.74.6
Jul33° / 21°82.111.84.2
Aug34° / 22°40.811.93.7
Sep34° / 23°112123.5
Oct34° / 23°305.412.13.4
Nov33° / 23°7211.812.23.4
Dec31° / 23°13818.912.33.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 26% of September, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18614
28614
38515
48515
58614
68614
78614
88614
98614
108515
118515
128515
138515
148416
158416
168416
178416
188317
198218
208218
218119
228119
238020
247921
257921
267921
277723
287723
297624
307525

Chance of precipitation in September

Any precipitation

Itinga do Maranhão gets around 11 mm of rain over 2 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 7% and peaks near 11% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
14
24
34
45
55
65
75
85
95
105
116
126
136
146
156
166
177
187
197
208
218
228
239
249
2510
2610
2710
2811
2911
3011

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 65% of days. Sticky, muggy-or-worse air turns up on roughly 90% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
12136520
22136520
32136421
42136421
52146222
62146222
72146222
82146123
92136223
102136223
112136223
122126224
132116324
142106424
15296524
16286525
17286525
18276526
19266626
20156727
21146728
22146728
23136729
24136630
25126730
26126631
27126532
28026533
29016633
30016534

Wind in September

Winds average 9 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 6:12 AM to 5:58 AM, and sunset from 6:07 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:126:07
211.96:126:07
311.96:116:07
411.96:116:07
511.96:116:06
611.96:106:06
711.96:106:06
811.96:096:06
911.96:096:05
1012.06:086:05
1112.06:086:05
1212.06:076:05
1312.06:076:04
1412.06:066:04
1512.06:066:04
1612.06:056:04
1712.06:056:03
1812.06:046:03
1912.06:046:03
2012.06:036:03
2112.06:036:02
2212.06:026:02
2312.06:026:02
2412.06:016:02
2512.06:016:02
2612.06:006:01
2712.06:006:01
2812.05:596:01
2912.05:596:01
3012.05:586:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.19 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.32 kWh/m² to a high of 6.19 kWh/m² in September across the year — September's 6.19 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Hazard calendar for Itinga do Maranhão

In seasonPeak

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

Itinga do Maranhão's monsoon runs December–April, 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 Itinga do Maranhão?

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

3.5
Sightseeing
5th-best month of the year
7.2
Beach & pool
4th-best month of the year

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

What to pack for Itinga do Maranhão in September

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

In September, Itinga do Maranhão sees daytime highs around 34°C and nights near 23°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Itinga do Maranhão 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 Itinga do Maranhão peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 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 15Dec 12UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec10Very high

Air quality in Itinga do Maranhão 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 Itinga do Maranhão is worst in November — around 33 µg/m³ PM2.5 (moderate), about 4.1× the cleanest month (June, 8 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1433 µg/m³Jun 188 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar13Moderate
Apr12Good
May10Good
Jun8Good
Jul9Good
Aug14Moderate
Sep18Moderate
Oct29Moderate
Nov33Moderate
Dec25Moderate
Location & terrain

Where is Itinga do Maranhão?

Itinga do Maranhão sits at 4.4°S, 47.5°W, 154 m above sea level, in Brazil. The nearest listed city is Dom Eliseu, 18 km away.

Topography around Itinga do Maranhão

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

Within 3 km, the terrain around Itinga do Maranhão has only modest variations in elevation — a maximum elevation change of 128 m around an average of 161 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 214 m; within 80 km, significant variations in elevation — a maximum elevation change of 344 m.

The land around Itinga do Maranhão is covered by grassland (65%) and trees (24%) within 3 km, grassland (55%) and trees (42%) within 16 km, and trees (50%) and grassland (45%) within 80 km.

3 km
128 m
16 km
214 m
80 km
344 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Dom Eliseu 18 km · Açailândia 55 km · Rondon do Pará 70 km · Bom Jesus das Selvas 75 km · Ulianópolis 79 km · João Lisboa 112 km · Buriticupu 120 km · Imperatriz 120 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 Itinga do Maranhão (-4.4497°, -47.5256°, elevation 154 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).