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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Daily Press UK weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
For the most reliable view of conditions in St Ives, combine the live forecast above with local tide times: sudden sea-fog and brisk south-westerlies often shift the weather here faster than wider regional forecasts suggest.
What makes St Ives weather different from the rest of Cornwall?
St Ives sits on a north-facing bay exposed to Atlantic swells and prevailing south-westerlies, which means it can be noticeably cooler and breezier than inland Cornwall, especially in spring and early summer. The live forecast above will show you today’s wind direction — if it’s from the south-west, expect a drop in perceived temperature on Porthmeor Beach. Conversely, a northerly airflow can bring clearer skies but a sharp chill. For a broader look at the region’s patterns, see the UK weather hub.
How reliable are 14-day and 21-day forecasts for St Ives?
A 14-day forecast for St Ives gives a useful trend but low precision: beyond day 5, small shifts in the jet stream can completely change the outcome for this exposed peninsula. The so-called 21 day weather forecast for St Ives Cornwall is only a broad-guess pattern indicator. For practical planning, trust the 7-day outlook in the live forecast above, and check the 10 Day Weather Forecast UK for a more reliable medium-range view.
Frequently asked questions about St Ives weather
Is the weather in St Ives the same as in St Ives Cambridgeshire?
No — they are completely different climates. St Ives Cornwall is coastal with Atlantic weather, while St Ives Cambridgeshire is inland East Anglia, typically drier and with greater summer-winter temperature swings. Check weather St Ives Cambridgeshire next 14 days for the Cambridgeshire version.
Where can I find a reliable 7-day forecast for St Ives?
The live forecast above gives the most accurate 7-day outlook. For a secondary check, the Met Office and BBC Weather both provide dedicated pages. Searches for bbc weather st ives 14 days will show extended-range data, but treat days 8–14 as indicative only.
Does St Ives get fog often?
Sea-fog (haar) is common between May and July when warm air moves over cooler Atlantic water. It can blanket the bay in 15 minutes, clearing as the wind shifts. Always check the live forecast above and local visibility reports before heading out on the water.