River Monitoring Stations in Vale of Glamorgan

Rainfall across south-west England and south Wales, year by year

Vale of Glamorgan sits in the Met Office's south-west England and south Wales area. Each bar is one year's total; the dark line is the ten-year average, which is what a trend looks like once single wet and dry years are smoothed out; the dashed line is the 1991–2020 average of 1,277 mm. 2025 brought 1,292 mm, close to that. The wettest year here since 1996 was 2000 (1,619 mm), the driest 2003 (959 mm).

Rainfall over a whole region, not a measurement in Vale of Glamorgan itself, and a wet year is not the same thing as a flood: what floods a river is how much falls at once and how wet the ground already was. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.