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Rainfall · Uttar Pradesh

Rainfall in Lucknow

966 mmof rain in an average year, 2006–2025

Lucknow gets 85% of its rain from the monsoon, June to September, and July is its wettest month. In 2025 it got 1,002 mm, 4% above average (normal).

Julywettest month, 291 mm on average
2008wettest year, 1,508 mm
2015driest year, 629 mm
4months a year with 50 mm of rain or more

Month-wise rainfall in Lucknow

Average rain in each month, 2006–2025.

0100200300400JanJan: 16 mmFebFeb: 26 mmMarMar: 14 mmAprApr: 11 mmMayMay: 30 mmJunJun: 114 mmJulJul: 291 mmAugAug: 255 mmSepSep: 161 mmOctOct: 38 mmNovNov: 3 mmDecDec: 5 mm
MonthAverage rainShare of the year
January16 mm2%
February26 mm3%
March14 mm1%
April11 mm1%
May30 mm3%
June114 mm12%
July291 mm30%
August255 mm26%
September161 mm17%
October38 mm4%
November3 mm0%
December5 mm1%

Yearly rainfall in Lucknow since 2006

Lighter bars are dry years, 20% or more below average (2014, 2015), when wells and borewells are drawn hardest. The last ten years averaged 8% more rain than the ten before.

050010001500200020062006: 860 mm2007: 882 mm2008: 1,508 mm20092009: 956 mm2010: 809 mm2011: 1,042 mm20122012: 935 mm2013: 1,005 mm2014: 665 mm20152015: 629 mm2016: 870 mm2017: 960 mm20182018: 1,216 mm2019: 1,123 mm2020: 900 mm20212021: 1,048 mm2022: 1,105 mm2023: 877 mm20242024: 919 mm2025: 1,002 mm- - average 966 mm

What Lucknow's rain is worth to a building

Every millimetre of rain on a square metre of roof is a litre of water. A 100 m² roof in Lucknow sheds about 82,110 litres in an average year, most of it in four monsoon months. Sent into a recharge pit, it refills the ground instead of flooding the street.

Your building: how much can you recharge?

Water you can put back each year1,64,220 L≈ 16 water tankers of 10,000 L

1 mm of rain on 1 m² is 1 litre. The surface factor allows for water lost to splash, evaporation and first-flush.

Rainwater harvesting cost in LucknowGroundwater level in LucknowPonds and lakes in LucknowWater quality in Lucknow

Frequently asked questions

What is the average annual rainfall in Lucknow?

About 966 mm a year, averaged over 2006–2025 from NASA POWER satellite and weather-model data for the centre of the district. The wettest year in that time was 2008 (1,508 mm) and the driest was 2015 (629 mm).

Which month gets the most rain in Lucknow?

July, with 291 mm in an average year, followed by August and September. November is the driest month (3 mm).

How much of Lucknow's rain falls in the monsoon?

85% of a normal year's rain falls from June to September. 4 months average 50 mm or more.

How much did it rain in Lucknow in 2025?

1,002 mm, which is 4% above the 2006–2025 average, or "normal" in the India Meteorological Department's terms.

Is rainfall in Lucknow increasing or decreasing?

The last 10 years averaged 8% more rain than the 10 before them. Year-to-year swings are still bigger than that change.

How much rainwater can a house in Lucknow harvest?

A 100 m² (about 1,076 sq ft) concrete roof in Lucknow sheds about 82,110 litres in an average year: area × rainfall × 0.85 for splash and evaporation. Sent into a recharge pit, that refills the ground under the house instead of running into the drain.

Rainfall from NASA POWER (bias-corrected satellite and weather-model rainfall) at the centre of Lucknow district. It reads close to, but not exactly the same as, India Meteorological Department rain-gauge totals, and rain varies within a district.

Rainfall in other districts of Uttar Pradesh