Brasnorte weather in September

In September, Brasnorte sees average daytime highs of 34°C and overnight lows near 22°C, with 58 mm of rain across 9.5 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 8th-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 42% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Brasnorte's 4th-clearest and 4th-windiest month. For the whole year in context, see Brasnorte's year-round climate.

Daytime high
34°
2nd warmest
Overnight low
22°
9th coldest
Rainfall
58 mm
9.5 wet days
Daylight
11 h 54 min
6:48 AM – 6:44 PM
Cloud cover
49%
4th clearest
Wind
6 km/h
4th windiest
Solar energy
5.75 kWh/m²
Travel score
3.2
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 Brasnorte reaches about 34°C in the afternoon and slips back to 22°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 37°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13422
23422
33422
43422
53422
63422
73422
83422
93422
103422
113422
123422
133422
143422
153422
163422
173422
183422
193422
203422
213422
223422
233322
243322
253322
263322
273322
283322
293322
303322

How September really feels in Brasnorte

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.

Brasnorte weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°31028.612.62.8
Feb30° / 22°30326.712.42.8
Mar30° / 22°26528.412.12.8
Apr30° / 22°1452111.73.4
May31° / 21°488.811.44.8
Jun31° / 20°91.911.35.4
Jul32° / 19°30.711.45.2
Aug34° / 21°101.711.64.0
Sep34° / 22°589.511.93.2
Oct32° / 22°16020.712.32.9
Nov31° / 22°24425.512.62.8
Dec30° / 22°30427.512.72.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 23% of September, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18020
28020
37822
47822
57624
67624
77525
87327
97327
107228
117030
127030
136832
146733
156634
166535
176337
186238
196238
206139
215941
225941
235743
245644
255545
265446
275248
285149
295050
304951

Chance of precipitation in September

Any precipitation

Brasnorte gets around 58 mm of rain over 9.5 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 32% and peaks near 54% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
114
215
316
417
518
619
720
821
922
1023
1124
1225
1326
1428
1529
1631
1733
1834
1936
2037
2139
2241
2343
2444
2546
2648
2750
2851
2953
3054

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 47% of days. Sticky, muggy-or-worse air turns up on roughly 75% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
14162535200
24152435220
33152335240
43152235250
53142134270
63142134280
73132033300
83132033320
93121932340
102121931350
112111831380
122101830400
132101729420
14291729440
15281628460
16171528480
17161528500
18161427520
19151327540
20151226551
21141125581
22141025591
2304924621
2403823651
2503722671
2603621691
2702621701
2802520721
2902420731
3001419751

Wind in September

Winds average 6 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
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 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 18 minutes over September. Sunrise moves from 6:59 AM to 6:38 AM, and sunset from 6:45 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:596:45
211.86:586:45
311.86:576:45
411.86:576:45
511.86:566:45
611.86:556:45
711.86:556:45
811.86:546:45
911.96:536:45
1011.96:536:45
1111.96:526:44
1211.96:516:44
1311.96:506:44
1411.96:506:44
1511.96:496:44
1611.96:486:44
1711.96:486:44
1812.06:476:44
1912.06:466:44
2012.06:456:44
2112.06:456:44
2212.06:446:44
2312.06:436:44
2412.06:436:44
2512.06:426:44
2612.06:416:44
2712.16:416:44
2812.16:406:44
2912.16:396:44
3012.16:386:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.75 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.63 kWh/m² to a high of 5.75 kWh/m² in September across the year — September's 5.75 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
Planning a trip in September

Hazard calendar for Brasnorte

In seasonPeak

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

Brasnorte's monsoon runs October–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 Brasnorte?

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

3.2
Sightseeing
6th-best month of the year
6.2
Beach & pool
5th-best month of the year

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

What to pack for Brasnorte in September

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

In September, Brasnorte sees daytime highs around 34°C and nights near 22°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Brasnorte in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Brasnorte peaks around January 23 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 23UV 15Sep 14UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep3Moderate
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Brasnorte 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 Brasnorte is worst in September — around 70 µg/m³ PM2.5 (unhealthy), about 6.3× the cleanest month (January, 11 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateSep 1766 µg/m³Jan 2311 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Good
Mar12Moderate
Apr13Moderate
May18Moderate
Jun27Moderate
Jul13Moderate
Aug28Moderate
Sep70Unhealthy
Oct37Poor
Nov20Moderate
Dec16Moderate
Location & terrain

Where is Brasnorte?

Brasnorte sits at 12.1°S, 58.0°W, 359 m above sea level, in Brazil. The nearest listed city is Juara, 110 km away.

Lucas do Rio VerdeSorriso

Topography around Brasnorte

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

Within 3 km, the terrain around Brasnorte has only modest variations in elevation — a maximum elevation change of 66 m around an average of 304 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 97 m; within 80 km, only modest variations in elevation — a maximum elevation change of 248 m.

The land around Brasnorte is covered by grassland (36%), cropland (29%) and trees (25%) within 3 km, trees (48%), grassland (30%) and cropland (22%) within 16 km, and trees (69%) within 80 km.

3 km
66 m
16 km
97 m
80 km
248 m
treesgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Juara 110 km · Juína 113 km · Campo Novo do Parecis 173 km · Tapurah 176 km · Sapezal 181 km · Vilhena 243 km · Lucas do Rio Verde 250 km · Sorriso 253 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 Brasnorte (-12.1201°, -58.0027°, elevation 359 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).