Thousands are expected in the Cornish town of Fowey later as the Red Arrows, perform at the regatta.
Bad weather meant the Arrows had to cancel their planned appearance at fireworks championships in Plymouth last night - but all being well they will be soaring across West Country skies today.
Fowey's week-long event is one of the most popular in the sailing calendar. Local Troy yachts will be racing - only 28 of which have ever been built.
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Hotter again on Monday with temperatures up to 25 degrees. Cooler on the coast and on the Isles of Scilly.
A clear night, hotter again on Monday.
Highs this afternoon of around 23 or 24 degrees. Cooler on the coast.