Delhi weather in September

In September, Delhi sees average daytime highs of 33°C and overnight lows near 25°C, with 99 mm of rain across 10.3 wet days and about 12.2 hours of daylight. It is the 5th-warmest and 3rd-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 64% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 36 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Delhi's 10th-clearest and 10th-windiest month. For the whole year in context, see Delhi's year-round climate.

Daytime high
33°
5th warmest
Overnight low
25°
8th coldest
Rainfall
99 mm
10.3 wet days
Daylight
12 h 12 min
6:10 AM – 6:20 PM
Cloud cover
35%
10th clearest
Wind
8 km/h
10th windiest
Solar energy
4.99 kWh/m²
Travel score
3.6
out of 10

Delhi is megacity and union territory of India.

Air quality
Severe
PM2.5 105 µg/m³ · 2019
Density
7,436/km²
people per km²
Founded
~500 BCE

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 Delhi reaches about 33°C in the afternoon and slips back to 25°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 36°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13326
23326
33326
43326
53326
63326
73326
83326
93326
103326
113326
123326
133326
143325
153325
163325
173325
183325
193325
203325
213325
223325
233324
243324
253424
263424
273424
283424
293423
303423

How September really feels in Delhi

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
20 feel dangerously hot (≥ 39°C)
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.

Delhi weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 272.710.47.9
Feb24° / 12°353.8118.3
Mar30° / 16°243.611.86.5
Apr36° / 22°153.212.72.4
May40° / 26°195.313.40.3
Jun38° / 28°699.813.80.9
Jul34° / 28°19219.713.62.1
Aug33° / 27°17619.7132.7
Sep33° / 25°9910.312.23.6
Oct32° / 20°142.111.35.1
Nov28° / 14°51.110.68.2
Dec22° / 10°71.210.28.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 64% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 24%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25644
35743
45842
56040
66139
76238
86535
96634
106931
117030
127228
137426
147525
157723
167921
178119
188218
198416
208515
218614
228713
238911
248911
259010
269010
27919
28919
29937
30937

Chance of precipitation in September

Any precipitation

Delhi gets around 99 mm of rain over 10.3 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 54% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
154
254
353
452
551
649
748
847
945
1044
1142
1240
1339
1437
1535
1634
1732
1830
1929
2027
2125
2224
2322
2421
2520
2619
2718
2817
2915
3014

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100021880
200022078
300012178
400012376
500012475
600012574
700012772
800022870
900022969
1000023167
1100023266
1200033364
1300043462
1400143560
1500153658
1600163756
1700273754
1800283852
19013103948
20013113945
21014124043
22015144040
23025164037
24126184033
25126194131
26137214028
27138234025
28238254022
29239273920
302410293817

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 36 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over September. Sunrise moves from 6:03 AM to 6:18 AM, and sunset from 6:39 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:036:39
212.66:036:38
312.56:046:36
412.56:046:35
512.56:056:34
612.56:056:33
712.46:066:32
812.46:066:30
912.46:076:29
1012.36:076:28
1112.36:086:27
1212.36:086:25
1312.36:096:24
1412.26:096:23
1512.26:106:22
1612.26:106:20
1712.16:116:19
1812.16:116:18
1912.16:126:17
2012.16:126:15
2112.06:136:14
2212.06:136:13
2312.06:146:12
2411.96:146:10
2511.96:156:09
2611.96:156:08
2711.86:166:07
2811.86:176:06
2911.86:176:04
3011.86:186:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.99 kWh/m².

For context, solar energy here swings from a low near 3.77 kWh/m² to a high of 7.31 kWh/m² in May across the year — September's 4.99 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.1Bright
205.1Bright
215.1Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in September

Hazard calendar for Delhi

In seasonPeak

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

Delhi's monsoon runs July–September, when most of the year's rain falls.

Delhi sees seasonal dust haze (May–August), heaviest in June.

Monsoon
Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Delhi?

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

3.6
Sightseeing
7th-best month of the year
6.5
Beach & pool
5th-best month of the year

September is a weaker month for outdoor sightseeing in Delhi. The water and warmth also suit a beach or pool day.

What to pack for Delhi in September

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

In September, Delhi sees daytime highs around 33°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Delhi in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Delhi peaks around August 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highHighModerateAug 15UV 9Jan 1UV 4
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar8Very high
Apr8Very high
May9Very high
Jun7Very high
Jul8Very high
Aug10Very high
Sep7Very high
Oct6High
Nov4Moderate
Dec4Moderate

Air quality in Delhi 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 Delhi is worst in November — around 168 µg/m³ PM2.5 (very unhealthy), about 3.2× the cleanest month (July, 53 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Delhi's WHO annual average of 105 µg/m³.

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyPoorUnhealthyVery unhealthyNov 23168 µg/m³Jul 2153 µg/m³
PM2.5 (µg/m³)Level
Jan159Very unhealthy
Feb137Unhealthy
Mar105Unhealthy
Apr79Unhealthy
May68Unhealthy
Jun63Unhealthy
Jul53Poor
Aug55Unhealthy
Sep75Unhealthy
Oct132Unhealthy
Nov168Very unhealthy
Dec167Very unhealthy
Location & terrain

Where is Delhi?

Delhi sits at 28.7°N, 77.2°E, 227 m above sea level, in India. The nearest listed city is Fatehpur Sikri, 178 km away.

AgraRishikeshJaipurShimlaBhimdattaDhangaḍhi̇̄Amargaḍhi̇̄

Topography around Delhi

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

Within 3 km, the terrain around Delhi has only modest variations in elevation — a maximum elevation change of 48 m around an average of 218 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 91 m; within 80 km, only modest variations in elevation — a maximum elevation change of 229 m.

The land around Delhi is covered by artificial surfaces (62%) and trees (25%) within 3 km, artificial surfaces (62%) and trees (22%) within 16 km, and cropland (78%) within 80 km.

3 km
48 m
16 km
91 m
80 km
229 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Fatehpur Sikri 178 km · Agra 181 km · Rishikesh 192 km · Jaipur 239 km · Shimla 273 km · Bhimdatta 289 km · Dhangaḍhi̇̄ 328 km · Amargaḍhi̇̄ 334 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 Delhi (28.6519°, 77.2315°, elevation 227 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).