Corumbá weather in September

In September, Corumbá sees average daytime highs of 33°C and overnight lows near 21°C, with 51 mm of rain across 6.8 wet days and about 11.9 hours of daylight. It is the 4th-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 53% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Corumbá's 4th-clearest and 2nd-windiest month. For the whole year in context, see Corumbá's year-round climate.

Daytime high
33°
4th warmest
Overnight low
21°
5th coldest
Rainfall
51 mm
6.8 wet days
Daylight
11 h 54 min
6:48 AM – 6:42 PM
Cloud cover
43%
4th clearest
Wind
10 km/h
2nd windiest
Solar energy
5.45 kWh/m²
Travel score
4.1
out of 10

Corumbá is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

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 Corumbá reaches about 33°C in the afternoon and slips back to 21°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 38°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13220
23220
33220
43220
53221
63221
73221
83221
93221
103221
113221
123321
133321
143321
153321
163321
173321
183322
193322
203322
213322
223322
233322
243322
253322
263322
273322
283322
293322
303322

How September really feels in Corumbá

Once humidity and wind are folded in, September averages 28 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
28
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.

Corumbá weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°17820.5132.8
Feb32° / 24°16219.612.62.9
Mar32° / 24°13917.912.13.4
Apr31° / 22°719.911.64.6
May28° / 19°616.911.16.5
Jun28° / 18°233.810.97.5
Jul28° / 17°223.2117.5
Aug31° / 19°253.111.45.8
Sep33° / 21°516.811.94.1
Oct33° / 23°10913.212.43.2
Nov33° / 24°14515.212.93.1
Dec33° / 24°1601913.12.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 31%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17624
27624
37525
47525
57426
67426
77426
87327
97228
107228
117129
127129
137129
147129
157030
166931
176931
186931
196931
206733
216733
226733
236634
246436
256337
266238
276139
286139
296040
305941

Chance of precipitation in September

Any precipitation

Corumbá gets around 51 mm of rain over 6.8 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 23% and peaks near 36% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
114
214
315
415
516
616
716
817
917
1017
1118
1218
1319
1420
1521
1621
1722
1824
1925
2026
2127
2228
2330
2431
2532
2633
2734
2835
2936
3036

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 46% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1201833262
2201833263
3191832273
4191832274
5181832284
6181831284
7171831285
8171831296
9161831296
10151730307
11151730318
12141629329
13131629329
141315293310
151214283411
161214283412
171213273513
181113273514
191112263515
201112263516
211012253518
221012243519
23911233521
24811233522
25811223524
26711213525
27610213527
28610203529
29510193530
30510193531

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over September. Sunrise moves from 7:02 AM to 6:35 AM, and sunset from 6:39 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:026:39
211.67:016:39
311.77:006:39
411.76:596:40
511.76:586:40
611.76:576:40
711.76:566:40
811.76:556:40
911.86:556:40
1011.86:546:41
1111.86:536:41
1211.86:526:41
1311.86:516:41
1411.96:506:41
1511.96:496:42
1611.96:486:42
1711.96:476:42
1811.96:466:42
1911.96:456:42
2012.06:446:42
2112.06:446:43
2212.06:436:43
2312.06:426:43
2412.06:416:43
2512.16:406:43
2612.16:396:44
2712.16:386:44
2812.16:376:44
2912.16:366:44
3012.26:356:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.45 kWh/m².

For context, solar energy here swings from a low near 3.73 kWh/m² to a high of 6.14 kWh/m² in December across the year — September's 5.45 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.7Bright
Planning a trip in September

Hazard calendar for Corumbá

In seasonPeak

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

Corumbá's rainy season runs October–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Corumbá?

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

4.1
Sightseeing
6th-best month of the year
7.0
Beach & pool
5th-best month of the year

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

What to pack for Corumbá in September

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

In September, Corumbá sees daytime highs around 33°C and nights near 21°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Corumbá 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 Corumbá peaks around January 18 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 17 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highModerateExtremeJan 18UV 16Sep 17UV 3
UV index (midday)Level
Jan16Extreme
Feb14Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun5High
Jul7High
Aug8Very high
Sep3Moderate
Oct6High
Nov13Extreme
Dec13Extreme

Air quality in Corumbá 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 Corumbá is worst in September — around 99 µg/m³ PM2.5 (unhealthy), about 8.6× the cleanest month (February, 12 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModerateModeratePoorUnhealthyModerateSep 1694 µg/m³Feb 1412 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb12Good
Mar16Moderate
Apr14Moderate
May12Good
Jun36Poor
Jul32Moderate
Aug58Unhealthy
Sep99Unhealthy
Oct54Poor
Nov18Moderate
Dec13Moderate
Location & terrain

Where is Corumbá?

Corumbá sits at 19.0°S, 57.7°W, 152 m above sea level, in Brazil. The nearest listed city is Ladário, 5.0 km away.

AnastácioAquidauanaBonitoRio Verde de Mato GrossoCoximJardim

Topography around Corumbá

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

Within 3 km, the terrain around Corumbá has significant variations in elevation — a maximum elevation change of 336 m around an average of 144 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 487 m; within 80 km, large variations in elevation — a maximum elevation change of 953 m.

The land around Corumbá is covered by trees (37%), artificial surfaces (32%) and wetland (20%) within 3 km, wetland (50%) and trees (37%) within 16 km, and wetland (47%) and trees (43%) within 80 km.

3 km
336 m
16 km
487 m
80 km
953 m
treesgrasslandartificial surfaceswaterwetland
September weather nearby: Ladário 5.0 km · Miranda 191 km · Anastácio 253 km · Aquidauana 254 km · Bonito 265 km · Rio Verde de Mato Grosso 296 km · Coxim 310 km · Jardim 317 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 Corumbá (-19.0092°, -57.6533°, elevation 152 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).