The weather forecast from the Met Office:

Bright with sunny intervals but also a few scattered showers developing, these most likely around early to mid-afternoon, perhaps some heavy ones and with fresh to strong west-northwest winds. Temperature just 15 or 16 Celsius at best.

Less breezy and mostly fine for Saturday, with only a slight risk of an isolated shower during the morning, otherwise generally bright with sunny spells.

Turning generally wet by Sunday morning, the rain heavy at times, becoming brighter by about mid-afternoon with just a few scattered showers.