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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the NewsPrism weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Castlerock weather today is changeable with mild temperatures and occasional rain, typical for the north coast of Northern Ireland. The live forecast above shows the immediate conditions, while the broader outlook remains unsettled through the week.
What is the weather like in Castlerock today?
Based on the live forecast above, expect a mix of cloud and sunny spells with light winds. Rain may arrive later, especially towards evening.
- Temperature: around 12–15°C, feeling cooler near the coast
- Wind: light to moderate, mainly from the southwest
- Rain: patchy, most likely after 3pm
- Visibility: good, but may drop in coastal mist
How does Castlerock’s coastal location affect its weather?
Being on the north coast of County Londonderry, Castlerock often experiences sea breezes and slightly cooler summers than inland areas. The Atlantic influence brings frequent cloud and rain, but also keeps winters relatively mild.
- Sea temperatures: around 13°C in September, moderating air temperature
- Coastal fog: can develop overnight, clearing by late morning
- Tide times: check local tables if planning beach walks
- Gusts: stronger during autumn and winter storms
How does Castlerock weather compare with Belfast?
Castlerock is cooler and windier than inland Belfast due to coastal exposure. For Belfast-specific conditions, see the bbc weather belfast page for detailed forecasts.
Is there a 14-day forecast for Castlerock?
Long-range forecasts for Castlerock are available via the Met Office and BBC Weather. For a quick overview, check bbc weather castlerock 14 days on our 10-day UK forecast page.
When is the best time to visit Castlerock beach?
Late spring (May–June) offers the driest spells and mild sea temperatures. Summer (July–August) is busiest but still unpredictable; always check UK weather hub before heading out.