Promoted Stories. It shows large swathes of bright blue ocean all around Cornwall. NASA reports this might be due to an unexpectedly large and intense bloom of phytoplankton. Phytoplankton are microscopic plant-like organisms that live in water.
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The best beaches in Cornwall. You could be forgiven for thinking you were in the South of France when soaking up the British summertime at one of Cornwall's best beaches, with 400 miles of shimmering coastline – Cornwall beaches offer dramatic cliffs and crystal clear water from Carbis Bay to Kynance Cove.
Clear blue waters for cooling off in the Cornish summerCarbis Bay is blessed with its own unique microclimate and some of the cleanest, clearest waters in the UK.
Sitting on the west coast, Carbis Bay is one of the more famous beaches in Cornwall but is still as outstandingly beautiful as others in the county. The crisp, white sands are a delight in the warmer months and the sheltered cove is safe for sea swimming.
Generally the water quality is good in Cornwall. After periods of high rainfall, seawater can become contaminated with farmland or urban runoff. There is also the risk of sewage overflows releasing raw, untreated human waste into the ocean.
Cornwall has the mildest and sunniest climate in the United Kingdom, as a result of its oceanic setting and the influence of the Gulf Stream. The average annual temperature in Cornwall ranges from 11.6 °C (53 °F) on the Isles of Scilly to 9.8 °C (50 °F) in the central uplands.
Average annual water temperature on the coast in Cornwall is 45°F, by the seasons: in winter 33°F, in spring 33°F, in summer 59°F, in autumn 53°F. Minimum water temperature (27°F) in Cornwall it happens in January, maximum (68°F) in August.
The south coast of Cornwall is more subdued and indented than the north coast, and receives waves generated by winds across the English Channel as well as south-westerly ocean swell from the Atlantic (Bird 1998).
Cornwall - Pedn Vounder BeachFor our number 1 favourite secret beach, it's Pedn Vounder. So secret that at certain times its hidden beneath the shallow and clear azure waters. Beyond Penzance and only 4 miles from Landsend, Cornwall's secret beach is the found in almost the most south westerly point of England.
Carbis Bay, CornwallOn a warm summer's day, as you kayak through brilliant blue seas and look back at the shore where golden sands backed by verdant hillside await, it's hard to remember that you are, in fact, in England. That's what sunny days at Cornwall's Carbis Bay offer up.