Plizio Visual Lab

Usmas Lake

Plizio editorial teamUpdated: Jun 2026Data Sources

Lake

Weather…

Usmas Lake (Usmas ezers) is the sixth largest lake in Latvia, located in the western province of Kurzeme. It covers a surface area of approximately 38 to 41 square kilometers and is renowned for its highly indented shoreline and numerous islands. The largest of its seven islands, Viskūžu Island, spans over 300 hectares, making it the largest inland lake island in the country. The lake is a remnant of the ancient Ancylus Lake and reaches a maximum depth of 27 meters. Ecologically, it is a vital site, hosting the Moricsala Nature Reserve on one of its islands, which was founded in 1912 as the first nature reserve in Latvia. The lake is a popular destination for yachting and fishing, with its waters teeming with pike, perch, and bream. Surrounded by vast coniferous forests, the area provides a tranquil escape and is a significant habitat for various water birds.

Location: Latvia
Nearby: Usma (8 km)

Best time to visit & climate

The most pleasant time to visit is Jun–Aug.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	-3	-3	0	5	11	15	18	18	13	8	4	0
Rain mm	53	40	39	35	42	58	73	73	55	69	66	59

📋 Practical info

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Getting there

As one of the largest lakes, it is very easily accessible by major regional roads in western Latvia, with numerous public access points and local boat ramps.

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Best season

Summer is undeniably the most animated season for boating and lakeside recreation, while frozen winter conditions occasionally allow for safe ice walking activities.

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Terrain & paths

The immediate shoreline generally consists of flat sandy or grassy areas, with simple, accessible walking paths weaving through the trees near the water edge.

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What to bring

Standard leisure wear is first-rate for the lakeside paths, but those planning to explore the islands should consider water-resistant gear and boat rentals.

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Parking

There are multiple established parking facilities around the vast perimeter of the lake, particularly near well-known recreation bases and local campsites.

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Safety

Swimming and boating should be done cautiously following local safety advice, and visitors should always respect private property lines along the extensive shores.

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Time needed

A typical relaxing visit to the lake shores lasts a few hours, while renting a boat to see the famous islands can easily become a comprehensive full-day trip.