Rainfall in Kamrup (M)
Kamrup (M) gets 64% of its rain from the monsoon, June to September, and June is its wettest month. In 2025 it got 1,988 mm, 5% below average (normal).
Month-wise rainfall in Kamrup (M)
Average rain in each month, 2006–2025.
| Month | Average rain | Share of the year |
|---|---|---|
| January | 7 mm | 0% |
| February | 21 mm | 1% |
| March | 55 mm | 3% |
| April | 205 mm | 10% |
| May | 326 mm | 16% |
| June | 436 mm | 21% |
| July | 366 mm | 17% |
| August | 295 mm | 14% |
| September | 237 mm | 11% |
| October | 132 mm | 6% |
| November | 9 mm | 0% |
| December | 7 mm | 0% |
Yearly rainfall in Kamrup (M) since 2006
Lighter bars are dry years, 20% or more below average (2006), when wells and borewells are drawn hardest. The last ten years averaged 17% more rain than the ten before.
What Kamrup (M)'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 Kamrup (M) sheds about 1,78,160 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?
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 Kamrup (M)?
About 2,096 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 (2,886 mm) and the driest was 2006 (1,636 mm).
Which month gets the most rain in Kamrup (M)?
June, with 436 mm in an average year, followed by July and May. January is the driest month (7 mm).
How much of Kamrup (M)'s rain falls in the monsoon?
64% of a normal year's rain falls from June to September. 8 months average 50 mm or more.
How much did it rain in Kamrup (M) in 2025?
1,988 mm, which is 5% below the 2006–2025 average, or "normal" in the India Meteorological Department's terms.
Is rainfall in Kamrup (M) increasing or decreasing?
The last 10 years averaged 17% more rain than the 10 before them. Year-to-year swings are still bigger than that change.
How much rainwater can a house in Kamrup (M) harvest?
A 100 m² (about 1,076 sq ft) concrete roof in Kamrup (M) sheds about 1,78,160 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 Kamrup (M) district. It reads close to, but not exactly the same as, India Meteorological Department rain-gauge totals, and rain varies within a district.