Tucumã weather in September

In September, Tucumã sees average daytime highs of 33°C and overnight lows near 23°C, with 33 mm of rain across 5.9 wet days and about 12 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 48% 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 h 06 min by month's end. Set against the rest of the year, September is Tucumã's 4th-clearest and 3rd-windiest month. For the whole year in context, see Tucumã's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
23°
11th coldest
Rainfall
33 mm
5.9 wet days
Daylight
12 hours
6:20 AM – 6:18 PM
Cloud cover
47%
4th clearest
Wind
7 km/h
3rd windiest
Solar energy
6.09 kWh/m²
Travel score
3.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical September day in Tucumã reaches about 33°C in the afternoon and slips back to 23°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 35°C. Set against its neighbours, September runs on par with August and about 2°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13422
23422
33422
43422
53422
63422
73422
83322
93322
103322
113323
123323
133323
143323
153323
163323
173323
183323
193323
203323
213323
223323
233323
243323
253323
263323
273323
283323
293323
303323

How September really feels in Tucumã

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.

Tucumã weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°26329.312.32.9
Feb29° / 22°2412612.23.0
Mar29° / 22°26528.9122.9
Apr30° / 22°20325.511.93.1
May30° / 22°10917.211.73.9
Jun32° / 21°173.711.64.9
Jul33° / 21°71.711.64.5
Aug34° / 22°101.911.83.9
Sep33° / 23°335.9123.8
Oct32° / 23°9916.112.13.5
Nov30° / 22°16222.312.33.3
Dec30° / 22°2032612.43.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% 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 33%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27822
37723
47624
57525
67525
77525
87327
97327
107228
117228
127030
137030
146931
156832
166832
176733
186634
196535
206436
216337
226238
236139
246040
256040
265941
275842
285743
295644
305644

Chance of precipitation in September

Any precipitation

Tucumã gets around 33 mm of rain over 5.9 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 20% and peaks near 33% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
111
212
312
413
514
614
714
815
915
1015
1115
1216
1316
1417
1517
1618
1718
1819
1920
2021
2122
2224
2325
2426
2528
2629
2730
2831
2932
3033

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 43% of days. Sticky, muggy-or-worse air turns up on roughly 82% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
17274720
26264721
36254723
45254624
55244625
65234626
75234627
84224628
94214629
104214530
114204531
124194532
133184633
143174634
153164635
163154636
173144638
182134639
192124541
202114543
21294445
22284347
23274249
24174151
25163954
26153856
27153757
28143560
29043462
30033364

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over September. Sunrise moves from 6:28 AM to 6:12 AM, and sunset from 6:20 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:286:20
211.96:286:20
311.96:276:20
411.96:276:20
511.96:266:20
611.96:266:20
711.96:256:19
811.96:256:19
911.96:246:19
1011.96:236:19
1111.96:236:19
1211.96:226:19
1311.96:226:18
1412.06:216:18
1512.06:216:18
1612.06:206:18
1712.06:206:18
1812.06:196:18
1912.06:186:17
2012.06:186:17
2112.06:176:17
2212.06:176:17
2312.06:166:17
2412.06:166:16
2512.06:156:16
2612.06:156:16
2712.06:146:16
2812.06:136:16
2912.06:136:16
3012.16:126:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.09 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 6.09 kWh/m² in September across the year — September's 6.09 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
36.0Bright
46.0Bright
56.0Bright
66.0Bright
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Tucumã

In seasonPeak

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

Tucumã's monsoon runs November–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 Tucumã?

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

3.8
Sightseeing
5th-best month of the year
6.9
Beach & pool
4th-best month of the year

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

What to pack for Tucumã in September

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

In September, Tucumã sees daytime highs around 33°C and nights near 23°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

UV index in Tucumã 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 Tucumã peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 12UV 15Jun 21UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug11Extreme
Sep11Extreme
Oct11Extreme
Nov11Extreme
Dec11Extreme

Air quality in Tucumã 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 Tucumã is worst in September — around 55 µg/m³ PM2.5 (poor), about 7.2× the cleanest month (June, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModeratePoorModerateSep 1652 µg/m³Jun 238 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb11Good
Mar11Good
Apr12Moderate
May10Good
Jun8Good
Jul8Good
Aug30Moderate
Sep55Poor
Oct29Moderate
Nov22Moderate
Dec17Moderate
Location & terrain

Where is Tucumã?

Tucumã sits at 6.7°S, 51.2°W, 302 m above sea level, in Brazil. The nearest listed city is Ourilândia do Norte, 9.0 km away.

Topography around Tucumã

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

Within 3 km, the terrain around Tucumã has significant variations in elevation — a maximum elevation change of 324 m around an average of 330 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 383 m; within 80 km, significant variations in elevation — a maximum elevation change of 564 m.

The land around Tucumã is covered by trees (43%), grassland (37%) and artificial surfaces (20%) within 3 km, grassland (58%) and trees (40%) within 16 km, and trees (65%) and grassland (34%) within 80 km.

3 km
324 m
16 km
383 m
80 km
564 m
treesgrasslandartificial surfacesbare terrain
September weather nearby: Ourilândia do Norte 9.0 km · Água Azul do Norte 77 km · São Félix do Xingu 93 km · Rio Maria 138 km · Xinguara 140 km · Canaã dos Carajás 147 km · Parauapebas 158 km · Floresta do Araguaia 183 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 Tucumã (-6.7475°, -51.1611°, elevation 302 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).