Should be raining and full of prossies. You can get some cheap plonk at Spainsbury's though (yes, there really is a supermarket called that!)
Went last week in March this year 3 sunny days but not 'hot'. OK for sunbathing if protected from the breeze. Dunno about beach for kids, mine were too busy getting **** faced at the Mexican bar & Grill. Even when not sunny only had 1 day bad rain