Carrickfergus sits along the northern shore of Belfast Lough and experiences a coastal climate typical of Northern Ireland. Weather conditions are influenced by Atlantic weather systems moving across the Irish Sea, often bringing a mix of sunshine, cloud and occasional rain showers.

Due to its location beside the water, Carrickfergus can experience breezier conditions than inland towns, particularly during autumn and winter. However, the coastal setting can also bring clearer skies at times compared with surrounding inland areas.

This page provides the latest Carrickfergus weather forecast, including current weather conditions, rain radar and the 7-day forecast so residents and visitors can stay informed about changing weather patterns.