Surf powerboat racers from all over the country are at Watergate Bay this weekend for the Thundercat National Championships.
Powered by 50 horse-power outboard engines, the four-metre-long inflatable catamarans can reach speeds of up to 60 mph.
It's the second time the national event has been held in Cornwall.
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It will be a misty and murky start to Wednesday morning but sunshine will soon break through to bring warmer temperatures in the afternoon.
It will be a misty start tomorrow morning but sunshine will break through the murk and warm up the South West into the afternoon.
A Bristol Ariana Grande fan who was at her Manchester Arena concert last night has spoken on his fear when the bomb went off.