School children, musicians and performers took to the streets of Cornwall today to celebrate the patron saint of tin miners.
According to legend, St Piran landed on the sands at Perranporth, after being cast into the sea.
Street parades have been taking place all over the county, from Bodmin to Penzance, as Francesca Carpenter reports.
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It will be a breezy start, with clouds arriving around lunchtime. The afternoon will be sunny with showers.
Tuesday will start dry and bright with lighter winds, before cloud thickens bringing some outbreaks of rain through the afternoon.
The day's gusts will ease as the evening goes on. It will be mostly dry with cloud cover but occasional clear spells.