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Rainfall · Nagaland

Rainfall in Peren

1,383 mmof rain in an average year, 2006–2025

Peren gets 62% of its rain from the monsoon, June to September, and July is its wettest month. In 2025 it got 1,522 mm, 10% above average (normal).

Julywettest month, 240 mm on average
2017wettest year, 1,906 mm
2006driest year, 872 mm
7months a year with 50 mm of rain or more

Month-wise rainfall in Peren

Average rain in each month, 2006–2025.

0100200300JanJan: 10 mmFebFeb: 22 mmMarMar: 49 mmAprApr: 112 mmMayMay: 196 mmJunJun: 236 mmJulJul: 240 mmAugAug: 210 mmSepSep: 168 mmOctOct: 105 mmNovNov: 22 mmDecDec: 13 mm
MonthAverage rainShare of the year
January10 mm1%
February22 mm2%
March49 mm4%
April112 mm8%
May196 mm14%
June236 mm17%
July240 mm17%
August210 mm15%
September168 mm12%
October105 mm8%
November22 mm2%
December13 mm1%

Yearly rainfall in Peren since 2006

Lighter bars are dry years, 20% or more below average (2006, 2021), when wells and borewells are drawn hardest. The last ten years averaged 10% more rain than the ten before.

010002000300020062006: 872 mm2007: 1,292 mm2008: 1,197 mm20092009: 1,138 mm2010: 1,669 mm2011: 1,395 mm20122012: 1,348 mm2013: 1,495 mm2014: 1,174 mm20152015: 1,580 mm2016: 1,529 mm2017: 1,906 mm20182018: 1,493 mm2019: 1,497 mm2020: 1,405 mm20212021: 1,029 mm2022: 1,377 mm2023: 1,157 mm20242024: 1,584 mm2025: 1,522 mm- - average 1,383 mm

What Peren'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 Peren sheds about 1,17,555 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 year2,35,110 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.

Frequently asked questions

What is the average annual rainfall in Peren?

About 1,383 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 2017 (1,906 mm) and the driest was 2006 (872 mm).

Which month gets the most rain in Peren?

July, with 240 mm in an average year, followed by June and August. January is the driest month (10 mm).

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

62% of a normal year's rain falls from June to September. 7 months average 50 mm or more.

How much did it rain in Peren in 2025?

1,522 mm, which is 10% above the 2006–2025 average, or "normal" in the India Meteorological Department's terms.

Is rainfall in Peren increasing or decreasing?

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

How much rainwater can a house in Peren harvest?

A 100 m² (about 1,076 sq ft) concrete roof in Peren sheds about 1,17,555 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 Peren 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 Nagaland