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Rainfall · Tamil Nadu

Rainfall in Villupuram

1,139 mmof rain in an average year, 2006–2025

Villupuram gets 31% of its rain from the monsoon, June to September, and November is its wettest month. In 2025 it got 1,167 mm, 2% above average (normal).

Novemberwettest month, 278 mm on average
2021wettest year, 1,737 mm
2016driest year, 791 mm
8months a year with 50 mm of rain or more

Month-wise rainfall in Villupuram

Average rain in each month, 2006–2025.

0100200300JanJan: 29 mmFebFeb: 8 mmMarMar: 23 mmAprApr: 31 mmMayMay: 81 mmJunJun: 62 mmJulJul: 78 mmAugAug: 105 mmSepSep: 108 mmOctOct: 201 mmNovNov: 278 mmDecDec: 137 mm
MonthAverage rainShare of the year
January29 mm3%
February8 mm1%
March23 mm2%
April31 mm3%
May81 mm7%
June62 mm5%
July78 mm7%
August105 mm9%
September108 mm9%
October201 mm18%
November278 mm24%
December137 mm12%

Yearly rainfall in Villupuram since 2006

Lighter bars are dry years, 20% or more below average (2012, 2013, 2016), when wells and borewells are drawn hardest. The last ten years averaged 7% more rain than the ten before.

050010001500200020062006: 967 mm2007: 1,060 mm2008: 1,233 mm20092009: 1,037 mm2010: 1,368 mm2011: 1,094 mm20122012: 856 mm2013: 900 mm2014: 976 mm20152015: 1,512 mm2016: 791 mm2017: 1,239 mm20182018: 944 mm2019: 1,059 mm2020: 1,326 mm20212021: 1,737 mm2022: 1,189 mm2023: 1,110 mm20242024: 1,222 mm2025: 1,167 mm- - average 1,139 mm

What Villupuram'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 Villupuram sheds about 96,815 litres in an average year, most of it in a few wet 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 year1,93,630 L≈ 19 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 VillupuramGroundwater level in VillupuramWater quality in Villupuram

Frequently asked questions

What is the average annual rainfall in Villupuram?

About 1,139 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 (1,737 mm) and the driest was 2016 (791 mm).

Which month gets the most rain in Villupuram?

November, with 278 mm in an average year, followed by October and December. February is the driest month (8 mm).

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

31% of a normal year's rain falls from June to September. 8 months average 50 mm or more.

How much did it rain in Villupuram in 2025?

1,167 mm, which is 2% above the 2006–2025 average, or "normal" in the India Meteorological Department's terms.

Is rainfall in Villupuram increasing or decreasing?

The last 10 years averaged 7% more rain than the 10 before them. Year-to-year swings are still bigger than that change.

How much rainwater can a house in Villupuram harvest?

A 100 m² (about 1,076 sq ft) concrete roof in Villupuram sheds about 96,815 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 Villupuram 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 Tamil Nadu