Gurgaon Rainfall and Waterlogging Statistics 2026: Monsoon Totals, Flood Hotspots and Drains

What is the average annual rainfall in Gurgaon?

IMD's normal for the June to September monsoon in Gurgaon district is 489.2 mm. That is the figure IMD measures each season against, and it is a little above the Haryana average of 430.7 mm. The Census 2011 district handbook, using rainfall records for 2005 to 2009, puts average annual rainfall at 505.4 mm, with about 72% of the normal falling in June to September and 28 rainy days in an average year.

The two figures cover different periods and should not be added up. What they agree on is that Gurgaon is a dry place that gets most of its rain in about ten weeks, with July and September the wettest months in the old records.

Season totals swing a lot. Gurgaon got 593.9 mm in 2022, 21% above normal, and 2024 ended 43% above normal, the second highest excess in Haryana after Nuh. The 2026 monsoon gave 478.8 mm, 2% short, in a year when Haryana as a whole was 25% below normal. Across northwest India, 2025 was the wettest monsoon since 2001 at 747.9 mm, 127% of the long period average.

Gurgaon rainfall in 2026 compared with nearby districts

Gurgaon was one of the wetter districts in Haryana this year. Palwal at 479.2 mm, Gurgaon at 478.8 mm and Faridabad at 475.8 mm were close to each other, while Rohtak, Jind and Sirsa were far short. Only one of Haryana's 22 reporting districts had excess rain, 11 were normal and 10 were deficient.

Month by month, Haryana got 30.5 mm in June, 109.7 mm in July, 138.8 mm in August and 43.5 mm in September. August was the only month near normal. For Gurgaon residents that matches experience: the bad waterlogging days cluster in late July and August.

Extreme rain events in Gurgaon

Gurgaon floods are a story of intensity, not totals. On 1 September 2025 the district recorded more than 100 mm between 3 pm and 7 pm, about a fifth of a normal monsoon in four hours, and the district information office put the 24-hour total at over 150 mm. NH-48 jammed into the night, around a dozen underpasses including Bajghera and Rajiv Chowk were shut, and offices and schools were told to go online the next day.

IMD's station tables show the same pattern in 2024. The Gurgaon automatic weather station recorded 10 cm on 28 June and 12 cm on 1 August, and Pataudi in the district's west logged 21 cm on 14 September, the highest very heavy rain reading in Haryana that season. The record for the district remains 282.2 mm in 24 hours on 14 July 1968.

We have not listed the widely remembered July 2016 jam or the July 2023 rains here because we could not retrieve an IMD figure for them. Local rainfall also varies a lot inside the district: on 28 June 2024 Sohna tehsil had 82 mm while Gurugram had 30 mm and Pataudi 3 mm.

Gurgaon waterlogging areas: the official hotspot list

In August 2024 the district administration appointed nodal officers for 112 locations prone to flooding. After the 11 August 2024 rain, waterlogging was reported in Sectors 4, 5, 6, 7, 12, 13, 22, 23, 29, 30, 31, 38, 39, 40, 45, 47, 48 and 51, in Palam Vihar, Sheetla Colony and Rajiv Nagar, and on roads including the Narsinghpur service road, Hero Honda Chowk, Basai Chowk, Khandsa, Sohna Road and Subhash Chowk.

The same spots return year after year. In June 2024 the worst affected were Greenwood City, Ardee City and Sectors 21 and 23. In September 2025 the main problems were IFFCO Chowk, Rajiv Chowk and Sohna Road, with heavy water at Agrasen Chowk, Sector 15, Mehrauli Road and Old Delhi Road. The NH-48 stretch at Narsinghpur and Hero Honda Chowk is the most consistently reported flood point in the city, and it hits commuters more than homes.

Two things follow for a buyer. A sector name on this list does not mean every society in it floods; it usually means a low road or junction nearby does. And a society that drains well can still be cut off if its approach road dips.

Why does Gurgaon get flooded?

The city sits on land that drains toward the Najafgarh basin, and much of it was built faster than the storm water network that should serve it. Natural channels were built over, paved area rose sharply, and low junctions and underpasses now collect what the drains cannot carry. The district administration's own report after the August 2024 rain said storm water drains were either damaged or had not been cleaned.

The CAG's 2023 audit of Bharatmala shows the gap on the newest corridor. GMDA asked NHAI in February 2020 to build a master storm water drain along Package IV of the Dwarka Expressway. NHAI ordered it in May 2021 at ₹93.18 crore and bore half the cost, ₹46.60 crore, though the drain was GMDA's job. The audit also found the at-grade section of Package III was going under water in the rains because no proper drain existed nearby, and that GMDA had not started its own drain there.

In short, the problem is not that Gurgaon gets a lot of rain. The season total is modest. The problem is 100 mm arriving in a few hours on hard ground with drains that were never sized or connected for it.

How to check waterlogging risk before you buy

Start in the basement. Flooding leaves marks long after the water has gone: a tide line at the same height on several walls, white efflorescence on concrete, rust on pipe supports, patched flooring, sump pumps that look well used. Ask how many pumps serve the basement and whether they run on power backup. A pump that stops when the grid fails is not drainage.

Then look at levels. Is the society's ground plane above or below the road outside, and where does water leaving the site go? Walk the approach road to the main arterial and find its lowest point; that dip, not the society, is what usually strands residents. Check where the lift pits and electrical rooms sit relative to the basement floor.

Ask residents and security staff about July and August: has the basement flooded, has the approach road been impassable, did lifts or power fail, and has the RWA done drainage work since. If you can, visit once in the monsoon. Treat waterlogging as a check, not a veto, unless three things line up: a low site, a basement with flood marks, and residents who say the road goes under every year. That combination recurs and belongs in the price.