Breu Branco weather in September

In September, Breu Branco sees average daytime highs of 33°C and overnight lows near 26°C, with 26 mm of rain across 5.7 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 33°C through the month. The sky is clear or mostly clear about 51% 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 Breu Branco's 3rd-clearest and 1st-windiest month. For the whole year in context, see Breu Branco's year-round climate.

Daytime high
33°
1st warmest
Overnight low
26°
11th coldest
Rainfall
26 mm
5.7 wet days
Daylight
12 hours
6:13 AM – 6:12 PM
Cloud cover
44%
3rd clearest
Wind
8 km/h
1st windiest
Solar energy
6.11 kWh/m²
Travel score
4.3
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 Breu Branco reaches about 33°C in the afternoon and slips back to 26°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 34°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)
13225
23225
33225
43225
53225
63225
73225
83325
93325
103325
113326
123326
133326
143326
153326
163326
173326
183326
193326
203326
213326
223326
233326
243326
253326
263326
273326
283326
293326
303226

How September really feels in Breu Branco

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.

Breu Branco 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
Jan30° / 24°3672912.22.7
Feb30° / 24°35526.712.12.7
Mar30° / 24°40729.9122.7
Apr30° / 24°29027.911.92.7
May31° / 25°16122.711.83.3
Jun31° / 25°5410.811.84.4
Jul32° / 24°306.611.84.7
Aug32° / 25°193.811.94.6
Sep33° / 26°265.7124.3
Oct32° / 26°671212.13.7
Nov32° / 25°14118.312.23.2
Dec31° / 25°21924.812.22.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 27% of September, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18317
28317
38218
48218
58218
68218
78119
88119
98218
108218
118119
128119
138119
148020
158020
168020
178020
187822
197822
207723
217624
227624
237426
247426
257327
267228
277129
287129
297030
307030

Chance of precipitation in September

Any precipitation

Breu Branco gets around 26 mm of rain over 5.7 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 19% and peaks near 26% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
116
216
317
417
517
617
717
817
917
1017
1117
1217
1317
1417
1517
1617
1717
1818
1918
2019
2119
2220
2321
2422
2522
2623
2724
2825
2926
3026

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 82% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
128315
228315
318415
418316
528216
628216
728117
828117
928117
1028117
1128117
1228117
1318217
1418217
1518217
1618217
1718217
1818316
1918316
2018316
2118316
2218316
2318316
2418316
2518316
2618316
2718217
2818217
2918118
3018118

Wind in September

Winds average 8 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 8 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
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 6:20 AM to 6:06 AM, and sunset from 6:15 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:206:15
211.96:206:15
311.96:196:15
411.96:196:15
511.96:186:14
611.96:186:14
711.96:176:14
811.96:176:14
912.06:166:14
1012.06:166:13
1112.06:156:13
1212.06:156:13
1312.06:146:12
1412.06:146:12
1512.06:136:12
1612.06:136:12
1712.06:136:11
1812.06:126:11
1912.06:126:11
2012.06:116:11
2112.06:116:10
2212.06:106:10
2312.06:106:10
2412.06:096:10
2512.06:096:09
2612.06:086:09
2712.06:086:09
2812.06:076:09
2912.06:076:08
3012.06:066:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.11 kWh/m².

For context, solar energy here swings from a low near 4.07 kWh/m² to a high of 6.13 kWh/m² in October across the year — September's 6.11 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
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
186.2Intense
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 Breu Branco

In seasonPeak

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

Breu Branco'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 Breu Branco?

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

4.3
Sightseeing
4th-best month of the year
7.1
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Breu Branco for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Breu Branco in September

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

In September, Breu Branco sees daytime highs around 33°C and nights near 26°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

UV index in Breu Branco 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 Breu Branco peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 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 highExtremeVery highMar 15UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec10Very high

Air quality in Breu Branco 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 Breu Branco is worst in November — around 38 µg/m³ PM2.5 (poor), about 4.2× the cleanest month (June, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateNov 1237 µg/m³Jun 179 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb16Moderate
Mar15Moderate
Apr13Moderate
May10Good
Jun9Good
Jul10Good
Aug14Moderate
Sep20Moderate
Oct34Moderate
Nov38Poor
Dec21Moderate
Location & terrain

Where is Breu Branco?

Breu Branco sits at 4.0°S, 49.5°W, 94 m above sea level, in Brazil. The nearest listed city is Tucuruí, 32 km away.

Topography around Breu Branco

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

Within 3 km, the terrain around Breu Branco has only modest variations in elevation — a maximum elevation change of 51 m around an average of 100 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 143 m; within 80 km, significant variations in elevation — a maximum elevation change of 310 m.

The land around Breu Branco is covered by grassland (63%) and trees (36%) within 3 km, grassland (40%), trees (33%) and water (28%) within 16 km, and trees (46%) and grassland (42%) within 80 km.

3 km
51 m
16 km
143 m
80 km
310 m
treesgrasslandartificial surfaceswaterwetland
September weather nearby: Tucuruí 32 km · Novo Repartimento 49 km · Goianésia do Pará 49 km · Jacundá 66 km · Pacajá 127 km · Itupiranga 128 km · Tailândia 132 km · Baião 136 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 Breu Branco (-4.0009°, -49.5068°, elevation 94 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).