Rainwater planning

Warszawa rainfall profile for rainwater calculations

Monthly 1991–2020 precipitation normals for Warszawa, annual total and an example yield from a 100 m² roof.

549.8 mmAnnual total
44.5 m³Example: 100 m² roof, 0.9 × 0.9
1991–2020IMGW normal period
JanFebMarAprMayJunJulAugSepOctNovDecYear
31.029.829.035.155.563.982.260.650.440.236.036.1549.8

Source: IMGW-PIB Climate Portal, 1991–2020 climate normals, OPAD_SUMA. Normals are long-term averages, not a forecast for a specific year.