Loire Valley In 2000, UNESCO added the central part of the Loire River valley to its list of World Heritage Sites. The valley includes historic towns such as Amboise, Angers, Blois, Chinon, Montsoreau, Orléans, Saumur, and Tours. The climate is favorable most of the year, the river often acting as a line of demarcation in France's weather between the northern climate and the southern. The river has a significant effect on the mesoclimate of the region, adding a few degrees of temperature. The climate can be cool with springtime frost while wine harvest months may have rain. Summers are hot; however, influences
Loire sections are navigable: The French language adjective "ligérien" is derived from the name of the Loire, as in "le climat ligérien" ("the climate of the Loire Valley"). The climate is considered the most pleasant of northern France, with warmer winters and, more generally, fewer extremes in temperatures, rarely exceeding . It is identified as temperate maritime climate, and is characterised by the lack of dry seasons and by heavy rains and snowfall in winter, especially in the upper streams. The number of sunny hours per year varies between 1400 and 2200 and increases from northwest to southeast. The Loire Valley,