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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Current UK weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
BBC Weather Portrush provides the most reliable forecast for this popular County Antrim coastal town, and as the live forecast above shows, conditions can shift quickly — Atlantic weather systems mean a mix of sun, showers and sea breezes is typical throughout the year.
When is the best time to visit Portrush?
June to August offers the mildest sea temperatures and longest daylight, but July and August also bring school-holiday crowds and higher accommodation prices. May, June and September often deliver a good balance of drier spells and quieter beaches. Pack a waterproof jacket and layers regardless of the month — the north coast can produce four seasons in one day. If you are checking weather in Portrush tomorrow, pay attention to wind direction, as it strongly affects how the coast feels.
How long can you rely on a Portrush forecast?
The Met Office weather Portrush outlook is most reliable up to three days ahead. A weather in Portrush 10 days or Portrush weather 21 days forecast gives a useful trend but becomes less certain after day five, especially for rain timing. For trip planning, BBC Weather Portrush 7 days and BBC Weather Portrush 14 days provide enough detail for accommodation decisions and packing. Compare BBC Weather Portrush 7 days Met Office data with BBC Weather Portrush 14 days Met Office updates to spot any shifts before you travel.
Is the water warm enough to swim in Portrush?
Sea temperatures peak around 14–15°C in August and September. Many visitors swim in a wetsuit from June to September. The sheltered beaches like Whiterocks can feel slightly warmer than the open coast.
Does Portrush get a lot of rain?
Portrush receives around 900–1,000 mm of rain a year, similar to much of Northern Ireland. Showers tend to be short-lived and often pass quickly, especially in spring and early summer. A dry morning can easily become a wet afternoon.
How does wind affect the Portrush forecast?
Wind from the southwest or west usually brings mild, damp air. A northerly or easterly wind can drop temperatures sharply and make the coast feel much colder, even in summer. Always check wind speed before planning beach or golf days.
Sources
For other UK destinations, see the UK weather hub, or check Glasgow Weather and Bristol Weather. For extended planning, the 10 Day Weather Forecast UK page covers the whole country.