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Rainfall in Portsmouth: totals, records and how this month compares →
Next 24 hours: about 0.3mm of rain forecast for the area around Portsmouth, heaviest in the hour to Fri 03:00 (0.2mm).
A computer model forecast (DWD ICON) for a square about 15 km across, updated 05:05 UK time. It is a forecast, not a measurement, and not a Met Office forecast. Weather data by Open-Meteo (CC BY 4.0).
Portsmouth gets about 754 mm of rain a year on average (wettest month November, 92 mm; driest May, 40 mm). That is 35% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 1.9 km away. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.
Sewer overflows near this rain gauge, from the water companies’ live event-duration monitors and their official annual spill figures. Spill starts also appear as markers on the rainfall chart above.
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