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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the UrbanMixr weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Cornwall’s weather is mild and maritime, with cooler summers and milder winters than inland areas, but rain is frequent year-round. The best months for a visit are May to September. For current conditions, check the live forecast above before heading out.
When is the best time to visit Cornwall?
Late spring and early autumn offer the best balance: fewer crowds, comfortable temperatures and lower accommodation costs. July and August are warmest but busiest, especially in Newquay and St Ives. If you want to avoid school holidays, aim for late May, June, or the first half of September.
What should you pack for Cornwall?
A waterproof jacket is essential even in summer – showers can arrive quickly. Layers work well, as sea breezes often make coastal paths cooler than inland valleys. Sturdy walking shoes are useful for exploring the Cornwall weather map if you plan to hike along the South West Coast Path.
Is Cornwall always rainy?
No, but it does rain often – typically 150–170 days per year. However, rainfall is usually light and short-lived, especially in summer. Coastal areas can be much drier than inland moorland, so a Cornwall weather warning today may only apply to exposed uplands.
What is the 21 day weather forecast for Cornwall like?
Long-range forecasts (21 days) are low-confidence and best used as a trend guide. For reliable planning, rely on a 7–10 day forecast – check the weather in Cornwall 10 days ahead using the live forecast above or a trusted provider like the Met Office.
Where can I find a detailed Cornwall weather map?
The Met Office provides a detailed rainfall radar and pressure chart for Cornwall. You can also view the BBC Weather page for Newquay and Truro. These maps help you spot local bands of rain or sea fog before you set out.
For a broader picture of conditions across Britain, see our UK weather hub. If you are considering a trip to the south-east, compare with 10 day weather forecast UK for other coastal regions.