POSTCODE AREA CLIMATE RISK
BT55 is a UK postcode district covering part of Portrush, Causeway Coast and Glens. LocalRisk has flood, heat, air and ground-stability data for 311 postcodes in BT55. The district runs to the UK coastline.
Postcode-level flood data for BT55 (DfI Rivers) is not yet integrated into LocalRisk. To check individual property flood risk in BT55 today, use the NI Direct flood maps. Heat, air quality and subsidence data on this page are postcode-level.
Met Office UKCP18 projections (50th percentile) estimate around 4 days above 25°C per year for the area covering BT55, averaged over the 2021-2040 period under the RCP8.5 high emissions scenario. These are probabilistic projections - the full range of modelled outcomes is wide and lower emissions scenarios would produce lower figures.
Annual mean PM2.5 for the council area covering BT55 is 4.0 µg/m³ - close to the World Health Organisation guideline of 5 µg/m³. Postcodes within 200 metres of an A-road or major junction routinely run higher during weekday rush hours than residential streets two roads back.
Ground stability in BT55 follows the underlying geology more than the postal boundary. The British Geological Survey GeoSure dataset maps clay shrink-swell risk on a 50-metre cell, and properties on the same street can sit in different bands where a clay seam ends mid-road. A postcode-level check picks up that variation.
Flood data coverage
Postcode-level flood risk data for Northern Ireland (DfI Rivers) is not yet integrated. Heat, air quality and subsidence data on this page are postcode-level.