Town CLIMATE RISK
Mumbles is a town, within the Swansea council area. The settlement runs to the UK coastline.
Mumbles inherits its flood band (Lower) from the wider Swansea council area because Natural Resources Wales does not publish settlement-level breakdowns for every UK location. Search any postcode in Mumbles below for the address-level reading from NRW flood risk maps.
Met Office UKCP18 projections (50th percentile) estimate around 16 days above 25°C per year across the Swansea area, averaged over the 2021-2040 period under the RCP8.5 high emissions scenario. These are probabilistic projections - the 50th percentile is the central estimate within RCP8.5; the full range of modelled outcomes is wide and lower emissions scenarios would produce lower figures. Heat exposure within Mumbles itself is uneven: top-floor flats, west-facing terraces and properties without through-ventilation hold heat well into the night, while ground-floor homes near tree cover or open ground cool faster. The headline 16-day figure is a council-level UKCP18 estimate (LAD resolution), not a property-level reading.
Annual mean PM2.5 across the Swansea area is 4.8 µg/m³ - close to the World Health Organisation guideline of 5 µg/m³. Within Mumbles, readings are not flat: postcodes within 200 metres of an A-road or major junction routinely run 30-50% higher during weekday rush hours than residential streets two roads back. The figure is a council-level Defra UK-AIR estimate (1km modelled grid).
Ground stability in Mumbles follows the underlying geology more than the postal boundary. British Geological Survey shrink-swell mapping follows the underlying geology rather than postal boundaries, and neighbouring streets can sit in different bands where the mapped clay unit ends. Pre-1980 housing on clay-rich ground is the most exposed; properties on bedrock or well-drained sandy soils are typically lower-risk. A postcode-level check picks up that variation.
A free postcode check on LocalRisk covers up to six hazards for any address in Mumbles: NRW flood mapping, BGS ground stability, Met Office heat projections, Defra PM2.5, plus coastal erosion and green-space access where relevant. The postcode list below opens an address-level report for each postcode in Mumbles; the council link at the top of this page returns to the wider Swansea picture.
Council area level (Swansea). Search a postcode for detail.