land on the European continent, the mildest climate occurs in the northwest part of Iberian Peninsula (also Spain and Portugal), between Bilbao, A Coruña and Porto. In this the coastal strand, the average temperature varies from during the day and about at night in January to during the day and at night in the middle of summer. Rivers The most important rivers in the European Union are Danube, Rhine, Elbe, Oder, Vistula, Seine, and Rhône, among others. European Union rivers by discharge Danube - 6,450 m³/s Rhine - 2,315 m³/s Rhône - 1,900 m³/s (Waal - 1,500 m³/s as main distributary of Rhine) * Sava - 1,609 m³/s (tributary of the Danube) Po - 1,460 m³/s (largest river in Italy) Vistula - 1,080 m³/s Loire - 889 m³/s * Tisza - 863 m³/s (tributary of the Danube) Elbe - 860 m³/s * Inn - 735 m³/s (tributary of the Danube) European Union rivers by length The following are the longest rivers in the EU alongside their approximate lengths: Danube - (partially - 2628 km in the EU) Rhine - (partially - nearly 1100 km in the EU, nearly 150 km entirely in Switzerland or on its border with Liechtenstein) Elbe - Vistula - Tagus - Loire - Ebro - Meuse - Douro - Oder - Guadiana - Rhône - * Warta - (major tributary of Oder) Seine - * Mureș - (tributary of Tisza) * Prut - * (partially, border of the EU for nearly 742 km) (tributary of the Danube) * Sava - * (partially - 726 km) (tributary of the Danube) * Drava - (tributary of the Danube) Po - Guadalquivir - * Olt - (tributary of the Danube) * Tisza - * ( before 1880) (partially - 605 km in the EU) (tributary of the Danube) Garonne - * Siret - * (partially - 559 km) Kemijoki - (longest river in Finland) * Moselle (major left tributary of Rhine) * Main (major right tributary of Rhine) Torne - (very small part near the source is in Norway) Dalälven - (longest river entirely in Sweden) * Inn (river) (tributary of the Danube) Marne - (major tributary of the Seine) Maritsa - (partially - 513 km in the EU: 309 km entirety in Bulgaria; the lower course forms the border of the EU for 204 km) Júcar - Dordogne - * Saône - (major tributary of Rhône) Neman -