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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Culture Observer 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 St Agnes, as conditions on this exposed Cornish coast can shift quickly. The BBC feed gives you the most reliable hour-by-hour picture for planning walks or beach time.
When is the best time to visit St Agnes?
Late spring (May to June) and early autumn (September) offer the best balance of mild weather, lighter crowds and lower accommodation rates. July and August bring the warmest sea temperatures but also school-holiday crowds and higher prices. Pack a windproof jacket and layers even in summer, as coastal breezes can be brisk.
What should I pack for St Agnes weather?
A waterproof shell is essential year-round, along with sturdy walking shoes for the coastal path. In winter, add thermal layers and a hat; in summer, sun cream and a light fleece for evenings. Tide times matter here—check the forecast above before exploring the beach or the old mining trails.
Frequently asked questions
Is St Agnes weather different from the rest of Cornwall?
St Agnes sits on the exposed north coast, so it tends to be windier and slightly cooler than sheltered south-coast towns like Falmouth. Sea fog can roll in quickly, especially in spring.
Can I swim at St Agnes beach in winter?
Winter sea temperatures drop to around 9°C, making swimming uncomfortable without a wetsuit. Strong swells and rip currents also increase risk; check the live forecast above and local tide boards before entering the water.
How does St Agnes compare with St Ives for weather?
St Ives, being on the south-west coast, is slightly more sheltered and often records marginally higher temperatures. For a direct comparison, see our UK weather hub or check the Bristol Weather page for broader regional patterns.