Delhi Weather in September

🇮🇳 India

32°C

High

24°C

Low

Rain Days

10h

Sunshine

70%

Humidity

Asia › 🇮🇳 India › Delhi

Updated: March 2026

Is September a Good Time to Visit Delhi?

5/10

Fair

September is a fair time to visit Delhi (5/10). With 10 daily sunshine hours and only 10 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 6th sunniest of the year in Delhi. Culture-focused travellers and those who prefer lighter crowds will find September a practical choice, with prices running lower than peak April without sacrificing all the good weather. August offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Delhi's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.

vs August:32°C avg high

September sits at a particular moment in Delhi's seasonal arc. Temperatures average 32°C during the day, placing this month in the warmer half of the year, when the city operates at full summer intensity. Against the seasonal backdrop, 10 rainy days and 10 sunshine hours per day help calibrate expectations for what actually awaits on the ground.

32°C

Avg High

24°C

Avg Low

10 days

Rain Days

10h

Sunshine

70%

Humidity

Temperature in Delhi in September

The 8°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 70%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Winds are calm at an average 13 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 90°F average high, 75°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).

Temperature in September

Monthly Precipitation (mm)

What to Wear in Delhi in September

Morning24°CBefore the day warms up

Afternoon32°CPeak daytime temperature

Evening27°CAfter sunset cools down

Packing for Delhi in September means dressing for 32°C days and 24°C evenings. A lightweight linen or cotton shirt with loose-fit trousers or a sundress handles the 32°C daytime heat. Evening temperatures settle at 24°C, a modest 8°C drop that a light cardigan or denim jacket covers. For footwear, breathable walking sandals work for casual exploration, but closed-toe trainers are better for uneven surfaces in the historic centre. A compact foldable umbrella weighs almost nothing and earns its keep across 10 potential rainy days. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region.

💡

Local tip: Temple and religious site visits require covered shoulders and knees in most of Delhi's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.

Events in Delhi in September

September has no major festivals or public holidays in Delhi, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.

What to Pack for Delhi in September

Based on 32°C average highs and 10 rainy days

Lightweight breathable clothing
Linen or bamboo shirts for the hottest hours
Sun hat with a wide brim
UV-protective sunglasses
Hydration bottle (at least 1 litre)
Quick-dry travel towel
Anti-chafe balm for long walking days
Moisture-wicking synthetic fabrics for active days
Compact folding umbrella
Waterproof outer layer or packable rain jacket
Quick-dry clothing that recovers fast after a shower
SPF 30+ sunscreen
Comfortable walking shoes (a second pair lets the first air out overnight)
Universal travel adapter
Small day pack for city exploration
Reusable water bottle

Best Activities in Delhi in September

Early morning walk through Delhi's historic market districtBest before 9amTemperatures are still manageable at 28°C before the midday heat builds
Open-air rooftop dining at sunsetFrom 6pm onwardsThe 32°C daytime heat drops noticeably after sunset, making al fresco dining comfortable
Waterfront promenade or harbour walkEarly morning or after 5pmSea breezes cut through the humidity, making coastal routes the most pleasant in heat
Guided cycling tour of the old quarterFirst tour of the day (7-9am)The low-traffic window before tourist crowds and the cooler morning air make this the prime riding slot
Afternoon in a world-class museum or galleryAfternoon (2-5pm)Pairs well with outdoor morning activities and provides a mid-day rest from sightseeing
Coffee-house or traditional cafe culture experienceMid-morning or post-lunchA cultural ritual in this region that rewards slow appreciation regardless of weather
Evening live music, theatre, or opera performanceEvening shows typically at 7-9pmConsistent evening temperatures make getting to and from evening venues comfortable
Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningSeptember brings distinct seasonal changes to public green spaces worth exploring
Seek out chilled local specialities: cold-brew tea, ice desserts, or chilled seafood at street-level stallsAny time; most atmospheric in evening marketsHot-weather street food culture peaks in September, with vendors setting up specifically for warm evenings

Why is Delhi warm in September?

Delhi's September heat is driven by the Asian summer monsoon system, as the low-pressure cell that forms over the heated landmass draws warm, humid air from the oceans. The result is temperatures averaging 32°C with high moisture in the air. Overnight temperatures remain elevated at 24°C, as clouds and humidity prevent the earth from radiating heat away after sunset. Climate data: Open-Meteo ERA5 (1991–2020).

Sunshine Hours

The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.

UV Index

A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate -- wear sunscreen. UV 6-7: High -- hat and SPF 30+ essential. UV 8-10: Very High -- limit midday exposure. UV 11+: Extreme -- seek shade between 10am-4pm.

Rain Days

A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.

Humidity

Relative humidity as a percentage. Below 40%: Dry -- skin and throat may feel parched. 40-60%: Comfortable -- ideal for most people. 60-80%: Sticky -- light, breathable fabrics recommended. Above 80%: Muggy -- heat feels more intense; quick-dry clothing is essential.

Frequently Asked Questions: Delhi in September

In September, Delhi experiences average highs of 32°C (90°F) and lows of 24°C (75°F). Expect around 10 rainy days and 10 hours of sunshine per day, with humidity averaging 70%. The 8°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 6, so sun protection is advisable on clear days.

Delhi typically sees 10 rainy days in September, with total precipitation of around 83mm. Rain is moderate and manageable. Showers tend to pass quickly, and a light rain layer or foldable umbrella is sufficient protection for most days. For context, the driest month in Delhi typically sees 4-6 fewer rain days than September.

Pack lightweight, breathable clothing (linen or cotton), a wide-brim sun hat, SPF 50+ sunscreen, and a refillable water bottle for Delhi in September. The 32°C daytime heat demands sun protection during midday hours, typically 11am to 4pm. A compact travel umbrella is also worth packing, as 10 rainy days means afternoon showers are a real possibility. Quick-dry synthetic fabrics are preferable to cotton in 70% humidity.

September is a reasonable time to visit Delhi. Expect 10 rainy days, so pack a light rain layer for flexibility. Average temperatures of 32°C make outdoor exploration comfortable during the dry periods. With 10 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.

The average high temperature in Delhi in September is 32°C (90°F), and the average low is 24°C (75°F). The mean daily temperature is approximately 28°C (82°F). The day-to-night range of 8°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.

The best month to visit Delhi is generally April. April offers the most sunshine at 12 hours per day and only 3 rainy days. Average temperatures reach 36°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around April gives you the best chance of dry, bright weather.

September is shoulder or low season in Delhi, meaning fewer tourists and generally lower prices than peak months. With 10 sunshine hours and 10 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.

In September, Delhi suits a range of activities thanks to warm temperatures of 32°C. Mix of indoor and outdoor activities works well given the moderate chance of rain. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 10 hours of sunshine, parks and waterfront walks are particularly enjoyable.

September ranks 6th sunniest of the year in Delhi, with an average 10 daily sunshine hours. The driest months are November, December, and October. May is the hottest month (40°C avg high); January is the coolest (20°C). From here, temperatures fall 0°C into October. Compared to last month (August: 32°C high, 19 rain days), September is similarly warm and drier. September sits in the middle of the annual sunshine ranking for Delhi, offering a reasonable balance of good weather and manageable crowds.

Year-Round Climate

Month	High	Low	Rain Days	Sun	Details
January	20°C	7°C	3	9h	View
February	23°C	10°C	4	10h	View
March	29°C	15°C	3	11h	View
April	36°C	21°C	3	12h	View
May	40°C	25°C	5	12h	View
June	38°C	28°C	9	12h	View
July	34°C	27°C	19	9h	View
August	32°C	26°C	19	9h	View
September	32°C	24°C	10	10h	View
October	32°C	19°C	2	10h	View
November	27°C	14°C	1	10h	View
December	22°C	9°C	1	9h	View

Other Months in Delhi

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

Plan Your Trip to Delhi

Best Time to Visit Delhi Delhi vs Lahore in September

Data Sources for Delhi

Delhi on Wikipedia Open-Meteo Climate API NOAA National Centers UK Met Office WMO GeoNames

Climate normals represent 30-year averages (1991-2020). Individual years may vary.