Rainwater planning

Gdańsk rainfall profile for rainwater calculations

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

571.1 mmAnnual total
46.3 m³Example: 100 m² roof, 0.9 × 0.9
1991–2020IMGW normal period
JanFebMarAprMayJunJulAugSepOctNovDecYear
28.523.727.532.053.358.879.470.064.554.842.636.0571.1

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