The region has a sub-Mediterranean climate and is Slovenia 's only statistical region bordering the sea .
It covers the traditional and historical regions of Slovenian Istria and most of the Karst Plateau , which traditionally belonged to the County of Gorizia and Gradisca .
The region has a sub-Mediterranean climate and is Slovenian Istria 's only statistical region bordering the sea .
It covers the traditional and historical regions of Slovenian Istria and most of the Karst Plateau , which traditionally belonged to the County of Gorizia and Gradisca .