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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Edinburgh Wire weather desk. Data from national met services via Open-Meteo.
St Mawes weather today, as shown in the live forecast above, brings a mix of bright spells and coastal showers typical for this Roseland Peninsula harbour. The south-facing position on the Fal Estuary means conditions often differ from inland Cornwall, with sea breezes moderating temperatures through the afternoon.
What is the outlook for St Mawes this week?
The coming days will see a familiar pattern for St Mawes: Atlantic fronts brushing the coast, bringing cloudier periods and occasional rain, especially by midweek. The 10 day weather forecast UK suggests a gradual drying trend towards the weekend, though the met office weather St Mawes data indicates brisk south-westerly winds will keep the air fresh. For those checking the St Mawes webcam, expect visibility to vary with passing showers.
How does St Mawes weather compare to nearby areas?
Being sheltered by the Roseland Peninsula, St Mawes often records slightly milder overnight lows than exposed headlands like Falmouth. However, the bbc weather St Mawes reports frequently highlight the localised nature of sea fog, which can linger in the harbour while the rest of the coast stays clear. For longer-range planning, the St Mawes weather 14 days outlook shows a typical Cornish spring pattern of changeable conditions.
Is St Mawes weather usually warmer than inland Cornwall?
Yes, generally. The surrounding water of the Fal Estuary moderates temperatures, keeping St Mawes slightly milder in winter and cooler in summer than inland towns like Truro. Sea breezes also reduce the chance of extreme heat.
Where can I find the St Mawes weather 21 days met office forecast?
The Met Office provides a 30-day outlook on its website, but for St Mawes specifically, the St Mawes weather 21 days data is best viewed via their regional forecast for Cornwall. Localised harbour conditions can shift quickly, so check the live forecast above for the most reliable short-term detail.
Does the St Mawes webcam show current weather conditions?
Yes, several local webcams overlooking the harbour and St Mawes Castle give a real-time view of cloud cover, sea state and visibility. They are a useful complement to the bbc weather St Mawes and Met Office forecasts, especially for assessing localised sea fog or showers.