Bengaluru weather in September

In September, Bengaluru sees average daytime highs of 28°C and overnight lows near 20°C, with 121 mm of rain across 16.7 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 5% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Bengaluru's 9th-clearest and 4th-windiest month. For the whole year in context, see Bengaluru's year-round climate.

Daytime high
28°
7th warmest
Overnight low
20°
6th coldest
Rainfall
121 mm
16.7 wet days
Daylight
12 h 06 min
6:12 AM – 6:16 PM
Cloud cover
84%
9th clearest
Wind
11 km/h
4th windiest
Solar energy
4.92 kWh/m²
Travel score
5.0
out of 10

Bengaluru is capital city of Karnataka state in India.

Density
11,465/km²
people per km²
Founded
1537

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 28°C through the month.

A typical September day in Bengaluru reaches about 28°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12720
22720
32720
42720
52720
62720
72720
82720
92720
102720
112820
122820
132820
142820
152820
162820
172820
182820
192820
202820
212820
222820
232820
242820
252820
262820
272820
282820
292820
302820

How September really feels in Bengaluru

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Bengaluru weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 16°41.111.37.8
Feb30° / 18°61.111.66.4
Mar32° / 20°152.311.94.7
Apr33° / 22°447.512.33.7
May32° / 22°12315.912.63.5
Jun29° / 21°12018.612.74.2
Jul27° / 21°12920.612.74.5
Aug27° / 20°12218.912.44.7
Sep28° / 20°12116.712.15.0
Oct27° / 20°13816.911.75.2
Nov27° / 18°629.111.46.6
Dec26° / 17°233.211.37.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 9% of September, with mostly cloudy or overcast conditions the remaining 86%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1793
2892
3892
4991
5991
6991
71090
81090
91090
101090
111090
121288
131387
141387
151387
161387
171387
181585
191585
201684
211783
221882
231981
242080
252080
262278
272278
282377
292476
302575

Chance of precipitation in September

Any precipitation

Bengaluru gets around 121 mm of rain over 16.7 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 55% and peaks near 60% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
160
260
360
459
559
659
759
858
958
1057
1156
1255
1354
1453
1552
1652
1751
1851
1951
2051
2151
2252
2353
2453
2554
2655
2756
2857
2958
3059

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 82% of days. Sticky, muggy-or-worse air turns up on roughly 85% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1011863
2011854
3011854
4011854
5012844
6012844
7012844
8012835
9013834
10013834
11013834
12014824
13114814
14115804
15116803
16116803
17117793
18117793
19118783
20118783
21118783
22118783
23117793
24117793
25117793
26116803
27016813
28016822
29015832
30015832

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112calm
1212calm
1312calm
1412calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over September. Sunrise moves from 6:12 AM to 6:12 AM, and sunset from 6:27 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:126:27
212.26:126:26
312.26:126:26
412.26:126:25
512.26:126:24
612.26:126:23
712.26:126:23
812.26:126:22
912.26:126:21
1012.16:126:21
1112.16:126:20
1212.16:126:19
1312.16:126:18
1412.16:126:18
1512.16:126:17
1612.16:126:16
1712.16:126:15
1812.06:126:15
1912.06:126:14
2012.06:126:13
2112.06:126:12
2212.06:126:12
2312.06:126:11
2412.06:126:10
2512.06:126:09
2611.96:126:09
2711.96:126:08
2811.96:126:07
2911.96:126:07
3011.96:126:06

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.92 kWh/m².

For context, solar energy here swings from a low near 4.24 kWh/m² to a high of 6.8 kWh/m² in March across the year — September's 4.92 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Bengaluru

In seasonPeak

In September, Bengaluru sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Bengaluru's rainy season runs May–October, 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 Bengaluru?

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

5.0
Sightseeing
6th-best month of the year
5.3
Beach & pool
9th-best month of the year

September is a reasonable time to visit Bengaluru for sightseeing.

What to pack for Bengaluru in September

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

In September, Bengaluru sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Bengaluru in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bengaluru peaks around July 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highJul 22UV 13Dec 21UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar11Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Air quality in Bengaluru 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 Bengaluru is worst in January — around 63 µg/m³ PM2.5 (unhealthy), about 2.8× the cleanest month (July, 22 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModerateUnhealthyJan 1362 µg/m³Jul 1823 µg/m³
PM2.5 (µg/m³)Level
Jan63Unhealthy
Feb57Unhealthy
Mar57Unhealthy
Apr51Poor
May48Poor
Jun27Moderate
Jul22Moderate
Aug26Moderate
Sep33Moderate
Oct61Unhealthy
Nov58Unhealthy
Dec60Unhealthy
Location & terrain

Where is Bengaluru?

Bengaluru sits at 13.0°N, 77.6°E, 920 m above sea level, in India. The nearest listed city is Mysore, 128 km away.

IrimbiliyamHampiManaliChennaiThaikattusseryMunnarMadurai

Topography around Bengaluru

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

Within 3 km, the terrain around Bengaluru has only modest variations in elevation — a maximum elevation change of 63 m around an average of 910 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 204 m; within 80 km, large variations in elevation — a maximum elevation change of 1,116 m.

The land around Bengaluru is covered by artificial surfaces (71%) and trees (25%) within 3 km, artificial surfaces (60%) within 16 km, and cropland (54%) within 80 km.

3 km
63 m
16 km
204 m
80 km
1,116 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Mysore 128 km · Irimbiliyam 286 km · Hampi 290 km · Manali 290 km · Chennai 291 km · Thaikattussery 316 km · Munnar 326 km · Madurai 344 km

India travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / D / M
230 V · 50 Hz
Prices
≈ 23% of US
price level, 2025
GDP per capita
$2,702
2025
Happiness
4.5 / 10
World Happiness, 2025
Safe drinking water
76%
of population, 2024
Homicide rate
2.8
per 100k, 2022
Road deaths
15.6
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 484
Religion
Hindu 80%Muslim 14%Christian 2%other and unspecified 2%

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 Bengaluru (12.9719°, 77.5937°, elevation 920 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).