Friday will see periods of locally increased cloud cover.
Winds will blow from the south-west to west, moderate to strong at force 4 to 5 Beaufort, with gusts on the southern coast reaching force 5 to 6.
The sea will be rough.
Temperatures will reach around 20°C inland and on the coasts, and around 9°C in the higher mountain regions.
Friday evening, increased cloud cover over western areas and the mountains may bring isolated showers. Winds will remain south-westerly to westerly at force 4 to 5, with rough seas.
On Saturday, periods of locally increased cloud cover are expected with the chance of isolated rain. Sunday will bring localised rain and an isolated thunderstorm, mainly after midday, while Monday will see isolated showers.
Temperatures are not expected to change significantly over the three-day period, remaining close to seasonal averages.