Mucajaí weather in September

In September, Mucajaí sees average daytime highs of 32°C and overnight lows near 23°C, with 114 mm of rain across 18 wet days and about 12 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 32% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Mucajaí's 1st-clearest and 8th-windiest month. For the whole year in context, see Mucajaí's year-round climate.

Daytime high
32°
5th warmest
Overnight low
23°
5th coldest
Rainfall
114 mm
18 wet days
Daylight
12 hours
5:58 AM – 5:58 PM
Cloud cover
56%
1st clearest
Wind
4 km/h
8th windiest
Solar energy
5.5 kWh/m²
Travel score
3.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Mucajaí reaches about 32°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13123
23123
33123
43123
53123
63223
73223
83223
93223
103223
113223
123223
133223
143223
153223
163223
173223
183223
193223
203223
213223
223223
233223
243223
253223
263223
273223
283224
293224
303224

How September really feels in Mucajaí

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.

Mucajaí weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°467.811.94.1
Feb32° / 24°427.411.93.9
Mar33° / 24°7610.5123.5
Apr31° / 24°24218.812.13.3
May30° / 23°39227.712.13.0
Jun29° / 23°35028.212.13.0
Jul29° / 22°27728.712.13.1
Aug30° / 23°19225.412.13.1
Sep32° / 23°11418123.4
Oct32° / 24°9114.711.93.4
Nov32° / 24°11216.211.93.3
Dec32° / 24°8112.911.93.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 24% of September, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25446
35545
45644
55545
65644
75644
85644
95644
105644
115743
125644
135743
145743
155743
165743
175743
185743
195743
205743
215842
225842
235743
245743
255743
265743
275644
285644
295644
305545

Chance of precipitation in September

Any precipitation

Mucajaí gets around 114 mm of rain over 18 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 60% and peaks near 71% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
171
270
370
469
569
668
768
867
967
1066
1165
1264
1363
1462
1561
1660
1759
1858
1956
2055
2154
2253
2352
2451
2550
2649
2748
2848
2947
3047

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 71% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
107327
207228
307228
407228
507228
607228
717128
817128
917128
1017029
1117029
1217029
1317029
1416930
1516930
1616930
1716930
1816930
1916930
2016930
2117029
2217029
2317029
2427028
2527127
2627127
2727226
2827325
2937225
3037225

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 hours 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 0 minutes over September. Sunrise moves from 6:02 AM to 5:54 AM, and sunset from 6:05 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:026:05
212.06:026:04
312.06:016:04
412.06:016:04
512.06:016:03
612.06:016:03
712.06:006:02
812.06:006:02
912.06:006:01
1012.05:596:01
1112.05:596:01
1212.05:596:00
1312.05:586:00
1412.05:585:59
1512.05:585:59
1612.05:585:58
1712.05:575:58
1812.05:575:57
1912.05:575:57
2012.05:565:57
2112.05:565:56
2212.05:565:56
2312.05:555:55
2412.05:555:55
2512.05:555:54
2612.05:555:54
2712.05:545:54
2812.05:545:53
2912.05:545:53
3012.05:545:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.5 kWh/m².

For context, solar energy here swings from a low near 3.69 kWh/m² to a high of 5.6 kWh/m² in October across the year — September's 5.5 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in September

Hazard calendar for Mucajaí

In seasonPeak

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

Mucajaí's monsoon runs April–August, 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 Mucajaí?

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

3.4
Sightseeing
5th-best month of the year
5.3
Beach & pool
7th-best month of the year

September is a weaker month for outdoor sightseeing in Mucajaí.

What to pack for Mucajaí in September

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

In September, Mucajaí sees daytime highs around 32°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

UV index in Mucajaí 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 Mucajaí peaks around March 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 16 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 21UV 15Nov 16UV 11
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr14Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov11Extreme
Dec11Extreme

Air quality in Mucajaí 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 Mucajaí is worst in March — around 31 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (July, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1830 µg/m³Jul 2111 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb21Moderate
Mar31Moderate
Apr25Moderate
May14Moderate
Jun12Good
Jul11Good
Aug12Good
Sep12Moderate
Oct13Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Mucajaí?

Mucajaí sits at 2.4°N, 60.9°W, 83 m above sea level, in Brazil. The nearest listed city is Cantá, 40 km away.

Topography around Mucajaí

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

Within 3 km, the terrain around Mucajaí has only modest variations in elevation — a maximum elevation change of 108 m around an average of 83 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 296 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,406 m.

The land around Mucajaí is covered by grassland (59%) and trees (33%) within 3 km, trees (61%) and grassland (33%) within 16 km, and trees (64%) and grassland (33%) within 80 km.

3 km
108 m
16 km
296 m
80 km
1,406 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Cantá 40 km · Boa Vista 50 km · Caracaraí 73 km · Alto Alegre 83 km · Lethem 161 km · Rorainópolis 175 km · Pacaraima 223 km · Santa Elena de Uairén 241 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 Mucajaí (2.4399°, -60.9115°, elevation 83 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).