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Rainfall · Chhattisgarh

Rainfall in Rajnandgaon

1,405 mmof rain in an average year, 2006–2025

Rajnandgaon gets 88% of its rain from the monsoon, June to September, and July is its wettest month. In 2025 it got 1,603 mm, 14% above average (normal).

Julywettest month, 428 mm on average
2013wettest year, 1,840 mm
2017driest year, 1,061 mm
4months a year with 50 mm of rain or more

Month-wise rainfall in Rajnandgaon

Average rain in each month, 2006–2025.

0200400600JanJan: 9 mmFebFeb: 12 mmMarMar: 18 mmAprApr: 22 mmMayMay: 35 mmJunJun: 211 mmJulJul: 428 mmAugAug: 337 mmSepSep: 267 mmOctOct: 45 mmNovNov: 11 mmDecDec: 12 mm
MonthAverage rainShare of the year
January9 mm1%
February12 mm1%
March18 mm1%
April22 mm2%
May35 mm2%
June211 mm15%
July428 mm30%
August337 mm24%
September267 mm19%
October45 mm3%
November11 mm1%
December12 mm1%

Yearly rainfall in Rajnandgaon since 2006

Lighter bars are dry years, 20% or more below average (2017, 2018), when wells and borewells are drawn hardest.

050010001500200020062006: 1,302 mm2007: 1,464 mm2008: 1,128 mm20092009: 1,199 mm2010: 1,473 mm2011: 1,521 mm20122012: 1,662 mm2013: 1,840 mm2014: 1,288 mm20152015: 1,242 mm2016: 1,223 mm2017: 1,061 mm20182018: 1,119 mm2019: 1,418 mm2020: 1,560 mm20212021: 1,350 mm2022: 1,517 mm2023: 1,558 mm20242024: 1,573 mm2025: 1,603 mm- - average 1,405 mm

What Rajnandgaon'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 Rajnandgaon sheds about 1,19,425 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 year2,38,850 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 RajnandgaonGroundwater level in RajnandgaonWater quality in Rajnandgaon

Frequently asked questions

What is the average annual rainfall in Rajnandgaon?

About 1,405 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 2013 (1,840 mm) and the driest was 2017 (1,061 mm).

Which month gets the most rain in Rajnandgaon?

July, with 428 mm in an average year, followed by August and September. January is the driest month (9 mm).

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

88% of a normal year's rain falls from June to September. 4 months average 50 mm or more.

How much did it rain in Rajnandgaon in 2025?

1,603 mm, which is 14% above the 2006–2025 average, or "normal" in the India Meteorological Department's terms.

Is rainfall in Rajnandgaon 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 Rajnandgaon harvest?

A 100 m² (about 1,076 sq ft) concrete roof in Rajnandgaon sheds about 1,19,425 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 Rajnandgaon 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 Chhattisgarh