Rainfall in Sri Sathya Sai
Sri Sathya Sai gets 54% of its rain from the monsoon, June to September, and September is its wettest month. In 2025 it got 829 mm, 8% above average (normal).
Month-wise rainfall in Sri Sathya Sai
Average rain in each month, 2006–2025.
| Month | Average rain | Share of the year |
|---|---|---|
| January | 5 mm | 1% |
| February | 4 mm | 1% |
| March | 14 mm | 2% |
| April | 31 mm | 4% |
| May | 83 mm | 11% |
| June | 83 mm | 11% |
| July | 85 mm | 11% |
| August | 115 mm | 15% |
| September | 130 mm | 17% |
| October | 127 mm | 17% |
| November | 69 mm | 9% |
| December | 24 mm | 3% |
Yearly rainfall in Sri Sathya Sai since 2006
Lighter bars are dry years, 20% or more below average (2012, 2014, 2016, 2018, 2023), when wells and borewells are drawn hardest. The last ten years averaged 9% more rain than the ten before.
What Sri Sathya Sai'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 Sri Sathya Sai sheds about 65,365 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?
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 Sri Sathya Sai?
About 769 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 2022 (1,135 mm) and the driest was 2018 (478 mm).
Which month gets the most rain in Sri Sathya Sai?
September, with 130 mm in an average year, followed by October and August. February is the driest month (4 mm).
How much of Sri Sathya Sai's rain falls in the monsoon?
54% of a normal year's rain falls from June to September. 7 months average 50 mm or more.
How much did it rain in Sri Sathya Sai in 2025?
829 mm, which is 8% above the 2006–2025 average, or "normal" in the India Meteorological Department's terms.
Is rainfall in Sri Sathya Sai increasing or decreasing?
The last 10 years averaged 9% more rain than the 10 before them. Year-to-year swings are still bigger than that change.
How much rainwater can a house in Sri Sathya Sai harvest?
A 100 m² (about 1,076 sq ft) concrete roof in Sri Sathya Sai sheds about 65,365 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 Sri Sathya Sai district. It reads close to, but not exactly the same as, India Meteorological Department rain-gauge totals, and rain varies within a district.