Janaúba weather in September

In September, Janaúba sees average daytime highs of 33°C and overnight lows near 19°C, with 8 mm of rain across 1.5 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 33°C through the month. The sky is clear or mostly clear about 60% of the time in September, and the air most often feels dry.

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 Janaúba's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Janaúba's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
19°
4th coldest
Rainfall
8 mm
1.5 wet days
Daylight
11 h 54 min
6:50 AM – 6:45 PM
Cloud cover
35%
3rd clearest
Wind
11 km/h
2nd windiest
Solar energy
6.3 kWh/m²
Travel score
4.7
out of 10

Janaúba 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 Janaúba reaches about 33°C in the afternoon and slips back to 19°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 36°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13218
23218
33218
43218
53218
63218
73218
83218
93218
103219
113219
123219
133319
143319
153319
163319
173319
183319
193319
203320
213320
223320
233320
243320
253320
263320
273320
283320
293320
303320

How September really feels in Janaúba

Once humidity and wind are folded in, September averages 26 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
26
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.

Janaúba 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
Jan31° / 21°11210.412.84.2
Feb32° / 22°728.612.54.1
Mar31° / 22°9810.312.14.2
Apr31° / 21°335.111.75.0
May30° / 19°71.811.35.9
Jun29° / 18°10.211.16.8
Jul29° / 17°0011.27.0
Aug31° / 17°10.211.56.2
Sep33° / 19°81.511.94.7
Oct33° / 21°536.212.43.8
Nov31° / 21°14013.112.73.9
Dec31° / 21°15613.412.94.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18218
28218
38218
48218
58218
68119
78119
88119
98119
108119
118119
128119
138020
148020
158020
167921
177921
187822
197723
207723
217723
227525
237525
247426
257327
267228
277129
287129
297030
307030

Chance of precipitation in September

Any precipitation

Janaúba gets around 8 mm of rain over 1.5 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 5% and peaks near 11% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
81
92
102
112
122
133
143
154
164
175
186
197
207
218
228
239
249
259
2610
2710
2811
2911
3011

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 45% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1573760
2573670
3573670
4573670
5573670
6573670
7573670
8563770
9563770
10563770
11543871
12523981
13523981
14504091
154841101
164641112
174542122
184342132
194143143
203943153
213743173
223544184
233344194
243244204
253044215
262944225
272843235
282743246
292643256
302643256

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 7:02 AM to 6:39 AM, and sunset from 6:44 PM to 6:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.77:026:44
211.77:026:44
311.77:016:44
411.77:006:44
511.76:596:44
611.86:586:44
711.86:586:44
811.86:576:44
911.86:566:44
1011.86:556:44
1111.86:546:45
1211.96:536:45
1311.96:536:45
1411.96:526:45
1511.96:516:45
1611.96:506:45
1711.96:496:45
1811.96:496:45
1912.06:486:45
2012.06:476:45
2112.06:466:45
2212.06:456:45
2312.06:446:46
2412.06:446:46
2512.06:436:46
2612.16:426:46
2712.16:416:46
2812.16:406:46
2912.16:406:46
3012.16:396:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.3 kWh/m².

For context, solar energy here swings from a low near 4.44 kWh/m² to a high of 6.4 kWh/m² in February across the year — September's 6.3 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.1Intense
46.1Intense
56.1Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.4Intense
256.4Intense
266.4Intense
276.4Intense
286.4Intense
296.4Intense
306.4Intense
Planning a trip in September

Hazard calendar for Janaúba

In seasonPeak

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

Janaúba's rainy season runs November–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 Janaúba?

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

4.7
Sightseeing
6th-best month of the year
7.9
Beach & pool
5th-best month of the year

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

What to pack for Janaúba in September

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

In September, Janaúba sees daytime highs around 33°C and nights near 19°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Janaúba 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 Janaúba peaks around February 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 16UV 15Jul 10UV 8
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec14Extreme
Location & terrain

Where is Janaúba?

Janaúba sits at 15.8°S, 43.3°W, 539 m above sea level, in Brazil. The nearest listed city is Porteirinha, 31 km away.

Topography around Janaúba

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

Within 3 km, the terrain around Janaúba has only modest variations in elevation — a maximum elevation change of 83 m around an average of 532 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 531 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,297 m.

The land around Janaúba is covered by artificial surfaces (30%), trees (24%) and grassland (23%) within 3 km, trees (33%), grassland (32%) and shrubs (20%) within 16 km, and trees (39%), grassland (29%) and shrubs (21%) within 80 km.

3 km
83 m
16 km
531 m
80 km
1,297 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Porteirinha 31 km · Barreiro do Jaíba 37 km · Jaíba 65 km · São João da Ponte 76 km · Francisco Sá 77 km · Varzelândia 78 km · Rio Pardo de Minas 85 km · Monte Azul 86 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 Janaúba (-15.8025°, -43.3089°, elevation 539 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).