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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Edinburgh Wire weather desk. Data from national met services via Open-Meteo.
Check the live forecast above before heading out in Newcastle, Co Down — conditions along this County Down coast can shift quickly with sea breezes, and the nearby Mourne Mountains often trap cloud or bring showers inland.
What does the forecast show for Newcastle today?
The live forecast above gives the most up-to-date view for Newcastle, Co Down, covering the current conditions and the next few hours. For those planning a coastal walk or a trip to the Mournes, checking the wind direction and rain chance is essential — the Irish Sea can bring sudden changes, especially in spring and autumn.
How reliable are the longer-range outlooks?
For a broader picture, the 10-day weather forecast UK provides a useful guide, though confidence decreases beyond day five. If you need a detailed week ahead, the BBC weather Newcastle Co Down 7 days forecast gives a reliable overview, while the Met Office weather Newcastle Co Down offers hourly breakdowns for planning.
What is the weather in Newcastle County Down tomorrow?
The live forecast above shows tomorrow’s conditions for Newcastle, Co Down. For a quick view, the weather in Newcastle County Down tomorrow is updated hourly on BBC and Met Office pages — check for coastal gusts and hill fog.
Can I get a 14-day outlook for Newcastle?
Yes, the BBC weather Newcastle Co Down 14 days forecast is available on the BBC Weather site, though as with all long-range predictions, use it as a trend rather than a precise guide. Local factors like sea temperature can alter the outlook.
Where can I find the Met Office forecast for Newcastle?
The Met Office weather Newcastle Co Down page provides detailed local data, including UV index and pollution levels. It’s a trusted source alongside the BBC, especially for warnings during storms or high winds.