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Rainfall · Uttar Pradesh

Rainfall in Mahrajganj

1,400 mmof rain in an average year, 2006–2025

Mahrajganj gets 84% of its rain from the monsoon, June to September, and July is its wettest month. In 2025 it got 1,348 mm, 4% below average (normal).

Julywettest month, 398 mm on average
2021wettest year, 2,194 mm
2015driest year, 1,121 mm
6months a year with 50 mm of rain or more

Month-wise rainfall in Mahrajganj

Average rain in each month, 2006–2025.

0200400600JanJan: 10 mmFebFeb: 18 mmMarMar: 19 mmAprApr: 22 mmMayMay: 87 mmJunJun: 214 mmJulJul: 398 mmAugAug: 327 mmSepSep: 234 mmOctOct: 68 mmNovNov: 1 mmDecDec: 4 mm
MonthAverage rainShare of the year
January10 mm1%
February18 mm1%
March19 mm1%
April22 mm2%
May87 mm6%
June214 mm15%
July398 mm28%
August327 mm23%
September234 mm17%
October68 mm5%
November1 mm0%
December4 mm0%

Yearly rainfall in Mahrajganj since 2006

Lighter bars are dry years, 20% or more below average, when wells and borewells are drawn hardest.

010002000300020062006: 1,211 mm2007: 1,543 mm2008: 1,939 mm20092009: 1,142 mm2010: 1,300 mm2011: 1,300 mm20122012: 1,215 mm2013: 1,700 mm2014: 1,358 mm20152015: 1,121 mm2016: 1,250 mm2017: 1,334 mm20182018: 1,188 mm2019: 1,396 mm2020: 1,688 mm20212021: 2,194 mm2022: 1,268 mm2023: 1,155 mm20242024: 1,357 mm2025: 1,348 mm- - average 1,400 mm

What Mahrajganj'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 Mahrajganj sheds about 1,19,000 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 year2,38,000 L≈ 24 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 MahrajganjGroundwater level in MahrajganjPonds and lakes in Mahrajganj

Frequently asked questions

What is the average annual rainfall in Mahrajganj?

About 1,400 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 2021 (2,194 mm) and the driest was 2015 (1,121 mm).

Which month gets the most rain in Mahrajganj?

July, with 398 mm in an average year, followed by August and September. November is the driest month (1 mm).

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

84% of a normal year's rain falls from June to September. 6 months average 50 mm or more.

How much did it rain in Mahrajganj in 2025?

1,348 mm, which is 4% below the 2006–2025 average, or "normal" in the India Meteorological Department's terms.

Is rainfall in Mahrajganj increasing or decreasing?

It has held roughly steady: the last 10 years averaged within 5% of the 10 before them. Year-to-year swings are much bigger than the trend.

How much rainwater can a house in Mahrajganj harvest?

A 100 m² (about 1,076 sq ft) concrete roof in Mahrajganj sheds about 1,19,000 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 Mahrajganj 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