But despite the blue skies, temperatures in the north-east and on the coast will remain below 10 degrees Celsius. It will be significantly warmer in the south-west.
The south of the country will continue to be covered by dense cloud on Sunday. There will even be some snowfall in the mountains, while rain can be expected in various places.
On Sunday night, there could be rain in the south and north-east, though it will remain mainly clear throughout the country, and low temperatures could bring some light frost.
But the cold will start to be dispelled on Monday, with changeable cloudy and clear conditions, and the rain will restricted to the extreme south of the country near the Alps.
Temperatures are set to rise through the week, with sunny days expected in all parts of the country.