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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Civic Insight weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above before heading out in Belfast today; Atlantic weather systems can bring sudden changes off Belfast Lough, so the details matter far more than a single icon.
What is the weather in Belfast today and tomorrow?
The live forecast above gives the most current view for today. Looking at the weather in Belfast tomorrow, expect conditions to follow a similar Atlantic-driven pattern – often cloudy with rain at times and moderate southwesterly winds. Temperatures generally hover around 10–14°C in spring and autumn, with cooler readings in winter. For a deeper outlook, the BBC weather in Belfast 10 days page offers an extended view, though short-term forecasts are more reliable.
Which forecast sources are most useful for Belfast?
Most locals rely on the Met Office weather Belfast for official warnings and detailed hour-by-hour data. Accuweather Belfast provides an alternative with its 15-day trend, handy for planning outdoor trips. If you want a regional perspective, RTE weather Belfast covers the island of Ireland and can be particularly useful for cross-border travel. For a quick check of the BBC weather Belfast 14 day forecast, combine the live feed above with the official Met Office source for the most complete picture.
Why does Belfast’s weather change so quickly?
Belfast sits at the eastern edge of the Atlantic, where low-pressure systems arrive from the west. The lough also channels moisture, leading to sharp shifts between rain and sunshine within a few hours.
Can I trust the BBC weather Belfast 14 day forecast?
Long-range forecasts are useful for spotting trends but become less reliable beyond day seven. For daily decisions – like planning a walk in the Mourne Mountains – stick to the live forecast above and the Met Office’s 5-day outlook.
What’s the difference between Met Office and BBC weather for Belfast?
The Met Office is the UK’s official weather service, feeding data to BBC Weather. Both use the same models, but the Met Office offers more site‑specific warnings and can provide a deeper technical breakdown for aviation or marine users.
Sources
For other UK cities, see our UK weather hub or the 10 day weather forecast UK page for a broader view.