Mljet Nacionalni Park
National Park Coastal Adriatic national park protecting lakes and forests
On Croatia’s island of Mljet, Mljet National Park protects two saltwater lakes, coastal pine forest and a Benedictine monastery on St. Mary islet; visitors kayak, cycle and hike quiet trails.
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Mljet Nacionalni Park occupies the northwestern part of the island of Mljet in southern Croatia and is designated as a national park. It is noted for its two adjacent saltwater lakes and the small islet with a historic monastery in one of the lakes.
The park’s main attractions are the two connected bodies of saltwater, Veliko Jezero and Malo Jezero, which are ringed by walking paths and viewpoints and are popular for boating, swimming and short hikes. A small Benedictine monastery stands on the islet in Veliko Jezero and is accessible by boat.
The island and its lakes were set aside as a national park to conserve the coastal and marine landscape, along with cultural heritage sites like the monastery; visitor infrastructure focuses on trails, viewpoints and regulated boat access. Recreational and conservation use has been balanced through park management.
Mljet island lies off the Dalmatian coast in Dubrovnik-Neretva County, a short ferry ride from the Peljesac peninsula and the city of Dubrovnik; the landscape combines Mediterranean coastline, forested interior and coastal lagoons.
- Getting around: Boat rentals and short ferry services are commonly used to reach the lakes and the monastery islet; visitors often combine lake walks with cycling on island roads.
- Best time to visit: The park is best visited outside the peak summer boating season for quieter trails; water-level and small-boat conditions vary seasonally.
What to See #
- Saltwater lakes: Two saltwater lakes - Veliko Jezero and Malo Jezero
- St. Mary islet (Monastery): Islet with a Benedictine monastery
How to Get to Mljet Nacionalni Park #
Regular catamaran and ferry services connect Mljet to Dubrovnik (Gruz harbor) and to Pelješac and Korčula in summer months. From Dubrovnik, the ferry ride takes about 1.5-2 hours. On the island, rent a bicycle or use local buses/taxis to reach the national park at Sobra.
Tips for Visiting Mljet Nacionalni Park #
- Arrive by ferry early morning to avoid the day-trip rush from Dubrovnik.
- Rent a bike on Mljet to explore the salt lakes; the west loop around Veliko and Malo Jezero is especially scenic.
- Visit the Benedictine islet monastery on St. Mary's Island late in the afternoon when light softens off the stone walls.
Best Time to Visit Mljet Nacionalni Park #
Late spring through early autumn (May-September) balances good weather and manageable crowds; July-August is busiest.
Weather & Climate near Mljet Nacionalni Park #
Mljet Nacionalni Park's climate is classified as Hot-Summer Mediterranean - Hot-Summer Mediterranean climate with hot summers (peaking in July) and cold winters (coldest in January). Temperatures range from 6°C to 29°C. Moderate rainfall (853 mm/year).
January
January is the coolest month with highs of 11°C and lows of 6°C. Regular rainfall (93 mm) and partly cloudy skies.
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February
February is the coolest month with highs of 11°C and lows of 6°C. Regular rainfall (80 mm) and partly cloudy skies.
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March
March is cool with highs of 14°C and lows of 8°C. Moderate rainfall (78 mm) and partly cloudy skies.
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April
April is cool with highs of 17°C and lows of 11°C. Moderate rainfall (69 mm) and partly cloudy skies.
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May
May is mild with highs of 22°C and lows of 15°C. Moderate rainfall (50 mm).
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June
June is mild with highs of 26°C and lows of 19°C. Moderate rainfall (39 mm) and mostly sunny skies.
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July
July is the warmest month with highs of 29°C and lows of 21°C. The driest month with just 26 mm and clear sunny skies.
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August
August is warm with highs of 29°C and lows of 21°C. Moderate rainfall (42 mm) and clear sunny skies.
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September
September is mild with highs of 25°C and lows of 18°C. Moderate rainfall (68 mm).
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October
October is cool with highs of 20°C and lows of 14°C. Regular rainfall (99 mm).
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November
November is cool with highs of 16°C and lows of 10°C. The wettest month with heavy rain (111 mm) and partly cloudy skies.
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December
December is cold with highs of 12°C and lows of 7°C. Regular rainfall (98 mm) and partly cloudy skies.
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