Chapada dos Guimarães weather in September

In September, Chapada dos Guimarães sees average daytime highs of 33°C and overnight lows near 21°C, with 43 mm of rain across 7.6 wet days and about 11.9 hours of daylight. It is the 1st-warmest and 8th-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 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Chapada dos Guimarães's 4th-clearest and 3rd-windiest month. For the whole year in context, see Chapada dos Guimarães's year-round climate.

Daytime high
33°
1st warmest
Overnight low
21°
5th coldest
Rainfall
43 mm
7.6 wet days
Daylight
11 h 54 min
6:40 AM – 6:35 PM
Cloud cover
43%
4th clearest
Wind
7 km/h
3rd windiest
Solar energy
5.81 kWh/m²
Travel score
3.7
out of 10

Chapada dos Guimarães 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 Chapada dos Guimarães reaches about 33°C in the afternoon and slips back to 21°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 37°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13320
23321
33321
43321
53321
63321
73321
83321
93321
103321
113321
123321
133321
143321
153322
163322
173322
183322
193322
203322
213322
223322
233322
243322
253322
263322
273322
283322
293322
303322

How September really feels in Chapada dos Guimarães

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.

Chapada dos Guimarães weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°26626.312.82.9
Feb30° / 23°23624.712.52.8
Mar31° / 23°22825.912.12.9
Apr31° / 22°11315.811.74.0
May30° / 20°315.711.35.6
Jun30° / 19°111.411.16.4
Jul30° / 18°60.811.26.5
Aug32° / 19°10211.55.0
Sep33° / 21°437.611.93.7
Oct32° / 23°13118.112.43.1
Nov31° / 23°17921.512.73.1
Dec31° / 23°22525.112.93.0

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 19% of September, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18317
28317
38218
48218
58119
68119
77921
87921
97822
107822
117624
127624
137525
147327
157327
167228
177228
187129
197030
206931
216832
226733
236535
246436
256238
266238
276040
285842
295842
305644

Chance of precipitation in September

Any precipitation

Chapada dos Guimarães gets around 43 mm of rain over 7.6 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 26% and peaks near 45% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
113
213
314
414
515
615
716
817
918
1019
1120
1221
1322
1423
1524
1625
1726
1828
1929
2030
2132
2233
2335
2437
2538
2640
2742
2843
2944
3045

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 35% of days. Sticky, muggy-or-worse air turns up on roughly 58% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1102533276
292432287
392332288
492231298
592231299
6921313010
7920303011
8819303112
9818293213
10816293215
11815283316
12714283417
13713273518
14612273620
15611263621
16510253722
1759253724
1849243825
1948233826
2038223928
2137213930
2237203931
2336194033
2426173935
2525163937
2625153940
2725143842
2814133843
2914123745
3014123747

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 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
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 42 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 24 minutes over September. Sunrise moves from 6:52 AM to 6:29 AM, and sunset from 6:34 PM to 6:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:526:34
211.76:516:34
311.76:506:34
411.76:506:34
511.86:496:34
611.86:486:34
711.86:476:34
811.86:466:34
911.86:466:34
1011.86:456:34
1111.86:446:34
1211.96:436:34
1311.96:426:35
1411.96:426:35
1511.96:416:35
1611.96:406:35
1711.96:396:35
1811.96:386:35
1912.06:376:35
2012.06:376:35
2112.06:366:35
2212.06:356:35
2312.06:346:35
2412.06:336:35
2512.06:336:35
2612.16:326:36
2712.16:316:36
2812.16:306:36
2912.16:296:36
3012.16:296:36

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.81 kWh/m².

For context, solar energy here swings from a low near 4.48 kWh/m² to a high of 6 kWh/m² in October across the year — September's 5.81 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
Planning a trip in September

Hazard calendar for Chapada dos Guimarães

In seasonPeak

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

Chapada dos Guimarães's monsoon runs October–March, 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 Chapada dos Guimarães?

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

3.7
Sightseeing
6th-best month of the year
6.7
Beach & pool
5th-best month of the year

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

What to pack for Chapada dos Guimarães in September

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

In September, Chapada dos Guimarães sees daytime highs around 33°C and nights near 21°C. Pack light clothes. Worth having: sun protection. About 8 days see rain.

light clothessun protection

UV index in Chapada dos Guimarães in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chapada dos Guimarães peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 21UV 15Sep 14UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep6High
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Chapada dos Guimarães 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 Chapada dos Guimarães is worst in September — around 67 µg/m³ PM2.5 (unhealthy), about 9.6× the cleanest month (June, 7 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyModerateGoodSep 1561 µg/m³Jun 107 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar8Good
Apr7Good
May7Good
Jun7Good
Jul8Good
Aug26Moderate
Sep67Unhealthy
Oct19Moderate
Nov10Good
Dec10Good
Location & terrain

Where is Chapada dos Guimarães?

Chapada dos Guimarães sits at 15.5°S, 55.7°W, 827 m above sea level, in Brazil. The nearest listed city is Cuiabá, 40 km away.

Topography around Chapada dos Guimarães

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

Within 3 km, the terrain around Chapada dos Guimarães has significant variations in elevation — a maximum elevation change of 492 m around an average of 750 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 681 m; within 80 km, large variations in elevation — a maximum elevation change of 777 m.

The land around Chapada dos Guimarães is covered by trees (56%) and grassland (22%) within 3 km, trees (47%), grassland (27%) and shrubs (23%) within 16 km, and trees (41%) and grassland (34%) within 80 km.

3 km
492 m
16 km
681 m
80 km
777 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Cuiabá 40 km · Várzea Grande 46 km · Santo Antônio do Leverger 57 km · Campo Verde 63 km · Lucas 99 km · Rosário Oeste 101 km · Jaciara 101 km · Nobres 103 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 Chapada dos Guimarães (-15.4606°, -55.7497°, elevation 827 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).