Itajubá weather in September

In September, Itajubá sees average daytime highs of 23°C and overnight lows near 13°C, with 94 mm of rain across 10.4 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Itajubá's 4th-clearest and 1st-windiest month. For the whole year in context, see Itajubá's year-round climate.

Daytime high
23°
8th warmest
Overnight low
13°
5th coldest
Rainfall
94 mm
10.4 wet days
Daylight
11 h 54 min
7:00 AM – 6:52 PM
Cloud cover
55%
4th clearest
Wind
7 km/h
1st windiest
Solar energy
5.1 kWh/m²
Travel score
6.8
out of 10

Itajubá 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 23°C through the month.

A typical September day in Itajubá reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 27°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12312
22312
32312
42312
52313
62313
72313
82313
92313
102313
112313
122313
132313
142313
152313
162313
172313
182313
192313
202313
212313
222313
232314
242314
252314
262314
272314
282314
292314
302314

Itajubá weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 17°36225.913.24.2
Feb25° / 17°23921.812.84.5
Mar24° / 16°20622.212.25.0
Apr23° / 15°8312.311.56.5
May21° / 12°577.610.96.8
Jun20° / 11°34510.77.3
Jul20° / 10°354.210.87.5
Aug22° / 11°334.711.27.8
Sep23° / 13°9410.411.96.8
Oct24° / 15°15417.512.55.7
Nov24° / 16°22521.513.14.9
Dec24° / 17°30625.313.34.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% 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 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16931
26931
36832
46634
56535
66337
76337
86139
96040
105842
115743
125644
135545
145446
155446
165347
175248
185149
195050
205050
214852
224852
234753
244753
254654
264555
274456
284258
294258
304159

Chance of precipitation in September

Any precipitation

Itajubá gets around 94 mm of rain over 10.4 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 35% and peaks near 49% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
123
224
324
425
526
626
727
828
929
1029
1130
1231
1331
1432
1533
1633
1734
1835
1936
2038
2139
2240
2341
2443
2544
2645
2746
2847
2948
3049

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 60% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
177221
277221
376231
475241
574251
673261
772271
870282
969292
1067312
1166322
1264333
1364333
1462344
1561354
1659365
1758375
1857376
1955387
2054397
2153398
22513910
23504011
24484012
25474013
26454014
27444115
28424117
29414218
30394219

Wind in September

Winds average 7 km/h in September, the windiest month of the year.

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 30 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 42 minutes over September. Sunrise moves from 7:15 AM to 6:46 AM, and sunset from 6:48 PM to 6:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:156:48
211.67:146:48
311.67:136:48
411.67:126:49
511.67:116:49
611.77:106:49
711.77:096:50
811.77:086:50
911.77:076:50
1011.77:066:51
1111.87:056:51
1211.87:046:51
1311.87:036:51
1411.87:026:52
1511.97:016:52
1611.97:006:52
1711.96:596:53
1811.96:586:53
1911.96:576:53
2012.06:566:53
2112.06:556:54
2212.06:546:54
2312.06:536:54
2412.06:526:55
2512.16:516:55
2612.16:506:55
2712.16:496:56
2812.16:486:56
2912.26:476:56
3012.26:466:57

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.1 kWh/m².

For context, solar energy here swings from a low near 3.63 kWh/m² to a high of 5.54 kWh/m² in February across the year — September's 5.1 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.1Bright
Planning a trip in September

Hazard calendar for Itajubá

In seasonPeak

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

Itajubá's monsoon runs November–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 Itajubá?

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

6.8
Sightseeing
4th-best month of the year
5.4
Beach & pool
1st-best month of the year

September is a reasonable time to visit Itajubá for sightseeing.

What to pack for Itajubá in September

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

In September, Itajubá sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Itajubá in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Itajubá peaks around February 9 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 9UV 15Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct12Extreme
Nov14Extreme
Dec15Extreme

Air quality in Itajubá 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 Itajubá is worst in September — around 18 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1418 µg/m³Dec 1710 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar11Good
Apr13Moderate
May14Moderate
Jun15Moderate
Jul14Moderate
Aug16Moderate
Sep18Moderate
Oct14Moderate
Nov10Good
Dec10Good
Location & terrain

Where is Itajubá?

Itajubá sits at 22.4°S, 45.5°W, 858 m above sea level, in Brazil. The nearest listed city is Santa Rita do Sapucaí, 32 km away.

Topography around Itajubá

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

Within 3 km, the terrain around Itajubá has significant variations in elevation — a maximum elevation change of 415 m around an average of 893 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,075 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,299 m.

The land around Itajubá is covered by grassland (40%), artificial surfaces (30%) and trees (27%) within 3 km, grassland (57%) and trees (37%) within 16 km, and grassland (47%) and trees (43%) within 80 km.

3 km
415 m
16 km
1,075 m
80 km
2,299 m
treesgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Santa Rita do Sapucaí 32 km · Paraisópolis 37 km · Campos do Jordão 38 km · Lorena 48 km · Passa Quatro 50 km · Potim 51 km · Guaratinguetá 51 km · Lambari 51 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 Itajubá (-22.4256°, -45.4528°, elevation 858 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).