Rainfall in West Tripura
West Tripura gets 61% of its rain from the monsoon, June to September, and June is its wettest month. In 2025 it got 2,654 mm, 9% above average (normal).
Month-wise rainfall in West Tripura
Average rain in each month, 2006–2025.
| Month | Average rain | Share of the year |
|---|---|---|
| January | 9 mm | 0% |
| February | 22 mm | 1% |
| March | 57 mm | 2% |
| April | 193 mm | 8% |
| May | 404 mm | 17% |
| June | 455 mm | 19% |
| July | 395 mm | 16% |
| August | 371 mm | 15% |
| September | 268 mm | 11% |
| October | 198 mm | 8% |
| November | 34 mm | 1% |
| December | 24 mm | 1% |
Yearly rainfall in West Tripura since 2006
Lighter bars are dry years, 20% or more below average (2006, 2008, 2011, 2012, 2013, 2014), when wells and borewells are drawn hardest. The last ten years averaged 48% more rain than the ten before.
What West Tripura'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 West Tripura sheds about 2,06,465 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 West Tripura?
About 2,429 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 (4,813 mm) and the driest was 2008 (1,532 mm).
Which month gets the most rain in West Tripura?
June, with 455 mm in an average year, followed by May and July. January is the driest month (9 mm).
How much of West Tripura's rain falls in the monsoon?
61% of a normal year's rain falls from June to September. 8 months average 50 mm or more.
How much did it rain in West Tripura in 2025?
2,654 mm, which is 9% above the 2006–2025 average, or "normal" in the India Meteorological Department's terms.
Is rainfall in West Tripura increasing or decreasing?
The last 10 years averaged 48% more rain than the 10 before them. Year-to-year swings are still bigger than that change.
How much rainwater can a house in West Tripura harvest?
A 100 m² (about 1,076 sq ft) concrete roof in West Tripura sheds about 2,06,465 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 West Tripura district. It reads close to, but not exactly the same as, India Meteorological Department rain-gauge totals, and rain varies within a district.