After early low cloud, patchy mist and fog clears, conditions will become mainly clear with some passing cloud. Cloud will build after midday, bringing isolated showers and thunderstorms mainly in the mountains and inland areas, with hail possible during storms.
Winds will blow south-westerly to north-westerly, light to moderate at force three to four, with gusts of up to force four to five along south-eastern coasts. The sea will be moderate.
Temperatures will reach around 34°C inland, around 29°C on most coasts, around 27°C on western coasts, and around 25°C on the higher peaks.
On Friday and through the weekend, cloud will build each afternoon, bringing isolated showers and thunderstorms mainly in the mountains and inland areas, with hail possible during storms. Temperatures are not expected to change significantly, remaining near or slightly above seasonal averages.