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Rainfall · Chhattisgarh

Rainfall in Mahasamund

1,420 mmof rain in an average year, 2006–2025

Mahasamund gets 87% of its rain from the monsoon, June to September, and July is its wettest month. In 2025 it got 1,569 mm, 10% above average (normal).

Julywettest month, 416 mm on average
2020wettest year, 1,754 mm
2008driest year, 1,157 mm
5months a year with 50 mm of rain or more

Month-wise rainfall in Mahasamund

Average rain in each month, 2006–2025.

0200400600JanJan: 7 mmFebFeb: 14 mmMarMar: 16 mmAprApr: 26 mmMayMay: 42 mmJunJun: 203 mmJulJul: 416 mmAugAug: 350 mmSepSep: 272 mmOctOct: 50 mmNovNov: 10 mmDecDec: 15 mm
MonthAverage rainShare of the year
January7 mm0%
February14 mm1%
March16 mm1%
April26 mm2%
May42 mm3%
June203 mm14%
July416 mm29%
August350 mm25%
September272 mm19%
October50 mm4%
November10 mm1%
December15 mm1%

Yearly rainfall in Mahasamund since 2006

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

050010001500200020062006: 1,210 mm2007: 1,484 mm2008: 1,157 mm20092009: 1,160 mm2010: 1,313 mm2011: 1,565 mm20122012: 1,680 mm2013: 1,649 mm2014: 1,321 mm20152015: 1,160 mm2016: 1,296 mm2017: 1,188 mm20182018: 1,168 mm2019: 1,646 mm2020: 1,754 mm20212021: 1,571 mm2022: 1,441 mm2023: 1,704 mm20242024: 1,367 mm2025: 1,569 mm- - average 1,420 mm

What Mahasamund'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 Mahasamund sheds about 1,20,700 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 year2,41,400 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 MahasamundGroundwater level in MahasamundPonds and lakes in MahasamundWater quality in Mahasamund

Frequently asked questions

What is the average annual rainfall in Mahasamund?

About 1,420 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 2020 (1,754 mm) and the driest was 2008 (1,157 mm).

Which month gets the most rain in Mahasamund?

July, with 416 mm in an average year, followed by August and September. January is the driest month (7 mm).

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

87% of a normal year's rain falls from June to September. 5 months average 50 mm or more.

How much did it rain in Mahasamund in 2025?

1,569 mm, which is 10% above the 2006–2025 average, or "normal" in the India Meteorological Department's terms.

Is rainfall in Mahasamund 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 Mahasamund harvest?

A 100 m² (about 1,076 sq ft) concrete roof in Mahasamund sheds about 1,20,700 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 Mahasamund 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