Читать книгу Walking in Bulgaria's National Parks. Pirin, Rila and Central Balkans National Parks онлайн

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The average annual temperature within the national park is 7°C, but this figure is lower at higher altitudes, dropping to between zero and 2°C at altitudes above 2000m. Summer temperatures are often surprisingly warm, with a July average varying between 16°C and 22°C at lower altitudes, and between 7°C and 17°C at altitudes over 1000m. Winters, by contrast, tend to be very cold, with average January temperatures of between -1°C to -3°C at lower altitudes and between -3°C and -9°C above 1000m.

For walkers, one of the most important climatic characteristics that must be taken into account when venturing into the Central Balkan national park is fog. The Stara Planina as a whole is notorious for this, with the region of the national park experiencing on average some 270 days per year with foggy conditions. This figure rises to a staggering 305 days on the highest peak Botev. May and June tend to be worst in this respect, and the winter months of January and February are also fairly bad. For those in search of the sunniest and clearest weather, then August is usually the best bet.