Comodoro weather in September

In September, Comodoro sees average daytime highs of 31°C and overnight lows near 20°C, with 89 mm of rain across 13.8 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 31°C through the month. The sky is clear or mostly clear about 41% 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 Comodoro's 4th-clearest and 4th-windiest month. For the whole year in context, see Comodoro's year-round climate.

Daytime high
31°
1st warmest
Overnight low
20°
6th coldest
Rainfall
89 mm
13.8 wet days
Daylight
11 h 54 min
6:56 AM – 6:51 PM
Cloud cover
52%
4th clearest
Wind
7 km/h
4th windiest
Solar energy
5.62 kWh/m²
Travel score
4.2
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Comodoro reaches about 31°C in the afternoon and slips back to 20°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 34°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13120
23120
33120
43120
53120
63120
73120
83120
93120
103120
113120
123120
133120
143120
153120
163121
173121
183121
193121
203121
213121
223121
233121
243121
253121
263121
273121
283021
293021
303021

How September really feels in Comodoro

Once humidity and wind are folded in, September averages 16 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
16
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.

Comodoro 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
Jan28° / 21°3262912.73.1
Feb28° / 21°32026.912.53.1
Mar29° / 21°29028.212.13.2
Apr29° / 20°15920.711.74.1
May28° / 19°721211.45.9
Jun28° / 18°183.311.27.0
Jul29° / 18°122.111.36.9
Aug31° / 19°274.711.55.6
Sep31° / 20°8913.811.94.2
Oct30° / 21°19023.212.33.5
Nov29° / 21°24825.412.63.3
Dec29° / 21°31428.412.83.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17822
27624
37624
47525
57327
67327
77228
87129
97030
106931
116832
126832
136634
146634
156436
166436
176337
186139
196139
206040
215842
225743
235545
245446
255248
265248
275050
284951
294852
304852

Chance of precipitation in September

Any precipitation

Comodoro gets around 89 mm of rain over 13.8 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 46% and peaks near 68% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
127
229
330
431
531
632
733
834
935
1036
1137
1238
1339
1441
1542
1644
1746
1848
1950
2052
2154
2256
2358
2460
2562
2664
2765
2866
2967
3068

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 46% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1101928394
291827405
391827415
491726426
581725437
681624448
781623458
871522469
9715214710
10714204811
11613194912
12613194914
13612185015
14511185016
15510175018
1649175020
1748175021
1848164923
1937164925
2036154927
2136154829
2235144831
2325134733
2425124735
2524114636
2624104638
272494540
281394542
291384443
301384444

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 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
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 7:07 AM to 6:45 AM, and sunset from 6:51 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.77:076:51
211.77:066:51
311.87:056:51
411.87:056:51
511.87:046:51
611.87:036:51
711.87:036:51
811.87:026:51
911.87:016:51
1011.87:006:51
1111.97:006:51
1211.96:596:51
1311.96:586:51
1411.96:576:51
1511.96:566:51
1611.96:566:51
1711.96:556:51
1812.06:546:51
1912.06:536:51
2012.06:536:51
2112.06:526:51
2212.06:516:51
2312.06:506:51
2412.06:506:51
2512.06:496:51
2612.16:486:51
2712.16:476:52
2812.16:476:52
2912.16:466:52
3012.16:456:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.62 kWh/m².

For context, solar energy here swings from a low near 4.44 kWh/m² to a high of 5.72 kWh/m² in October across the year — September's 5.62 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in September

Hazard calendar for Comodoro

In seasonPeak

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

Comodoro'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 Comodoro?

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

4.2
Sightseeing
5th-best month of the year
6.2
Beach & pool
5th-best month of the year

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

What to pack for Comodoro in September

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

In September, Comodoro sees daytime highs around 31°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.

light clothesrain gearsun protection

UV index in Comodoro in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Comodoro peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 21UV 15Sep 15UV 4
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul8Very high
Aug10Very high
Sep3Moderate
Oct12Extreme
Nov13Extreme
Dec14Extreme

Air quality in Comodoro 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 Comodoro is worst in September — around 59 µg/m³ PM2.5 (unhealthy), about 6.3× the cleanest month (April, 9 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModeratePoorModerateSep 1556 µg/m³Apr 1310 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar10Good
Apr9Good
May11Good
Jun19Moderate
Jul10Good
Aug33Moderate
Sep59Unhealthy
Oct28Moderate
Nov20Moderate
Dec12Good
Location & terrain

Where is Comodoro?

Comodoro sits at 13.7°S, 59.8°W, 594 m above sea level, in Brazil. The nearest listed city is Colorado do Oeste, 102 km away.

Brasnorte

Topography around Comodoro

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

Within 3 km, the terrain around Comodoro has only modest variations in elevation — a maximum elevation change of 117 m around an average of 609 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 258 m; within 80 km, significant variations in elevation — a maximum elevation change of 569 m.

The land around Comodoro is covered by grassland (41%) and trees (36%) within 3 km, grassland (49%) and trees (38%) within 16 km, and trees (65%) within 80 km.

3 km
117 m
16 km
258 m
80 km
569 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Colorado do Oeste 102 km · Sapezal 105 km · Vilhena 110 km · Cerejeiras 123 km · Vila Bela da Santíssima Trindade 151 km · Pontes e Lacerda 180 km · Campo Novo do Parecis 205 km · Brasnorte 258 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 Comodoro (-13.6631°, -59.7858°, elevation 594 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).