Jeziorak Lake

Poland's longest lake with numerous islands

Jeziorak in Warmian-Masurian Voivodeship is Poland's longest lake, stretching past Iława with many islands and narrow channels. Visitors sail, kayak, and explore lakeside resorts and forested shores in the Masurian lake district.

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Jeziorak at a Glance#

Address: Jeziorak Lake, near Iława, Warmian-Masurian Voivodeship, Poland

About Jeziorak#

Jeziorak is a long, narrow lake in the Warmian-Masurian Voivodeship of northern Poland, known as the country’s longest lake by length at roughly 27 kilometers. It lies within the Iława Lake District and features an irregular shoreline with bays and peninsulas.

The lake is popular for sailing, boating and angling, and the town of Iława at the lake’s western end functions as the main service and access center for visitors. Jeziorak is also linked to Poland’s historic Elbląg Canal, which provides a navigable connection toward the Baltic coast.

The lake’s length and connected waterways make it significant for regional tourism and water-based recreation, with marinas, promenades and excursion services operating from Iława and other small settlements along the shore.

Jeziorak sits in northern Poland’s lake district, surrounded by mixed forest and agricultural land, and is readily reached from regional roads serving Iława.

  • Length: Poland’s longest lake by length, stretching roughly 27 kilometers, with a sinuous shoreline and numerous bays that make it important for boating and fishing.
  • Recreation: The lake is part of a larger chain of lakes in the Iława Lake District and is a focal point for local tourism, sailing and freshwater fishing activities.

What to See#

  • Iława: The town of Iława sits at the western end of the lake and serves as the main access point and gateway for boating, tourism and lakeside recreation.
  • Elbląg Canal: The historic Elbląg Canal connects the lake system to the city of Elbląg and the Baltic Sea via a navigable canal system with unique inclined-plane sections used for raising and lowering boats.

How to Get to Jeziorak#

Jeziorak is the large lake by the town of Iława in Warmian‑Masurian Voivodeship. Iława is served by regional trains and buses (connections from Olsztyn, Gdańsk and other regional centres); from Iława railway or bus station the main lakefront is a short drive (5-10 minutes) or a 20-40 minute walk depending on which shore you aim for. Driving to Iława is the most direct way to access multiple beaches, marinas and boat launches on Jeziorak.

Tips for Visiting Jeziorak#

  • Use Iława as your base and catch one of the summer boat services from the Iława marina to explore Jeziorak and Wielka Żuława - the large lake island is the feature most visitors miss when they only drive the shoreline.
  • Plan your visit between late spring and early autumn when passenger boats and island access are operating, and pick a calm morning for the best conditions on the water.

Best Time to Visit Jeziorak#

Best visited in summer (June-August) for boating, swimming and outdoor lake activities.

Summer
Jun-Aug · 18-25°C
Warm weather ideal for boating, swimming and enjoying lakeside activities; highest visitor activity.
Spring / Autumn
Apr-May, Sep-Oct · 5-18°C
Milder conditions and fewer tourists-good for quieter sightseeing, cycling and fishing.
Winter
Dec-Feb · -5-2°C
Cold; the lake and surrounding waterways may freeze in colder spells and many water activities stop.

Weather & Climate near Jeziorak#

Climate

Jeziorak's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with mild summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -5°C to 22°C. Moderate rainfall (642 mm/year).

Air Quality: AQI 52 Moderate
Best Time to Visit
MayAugustJune
Temperature & Rainfall
Temperature Range
36°
Warmest Month
-31°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -5° - 0° -7° 37 mm overcast 95% 2.9 m/s 0.0 low 7.9h
February Poor -5° - 1° -6° 28 mm overcast 93% 2.9 m/s 0.1 low 9.6h
March Poor -1° - 5° -1° 35 mm overcast 87% 3.0 m/s 0.3 low 11.7h
April Good 3° - 11° 5° 38 mm partly cloudy 80% 3.0 m/s 0.7 moderate 13.8h
May Good 8° - 17° 13° 51 mm partly cloudy 77% 2.8 m/s 1.1 high 15.7h
June Good 11° - 20° 15° 81 mm partly cloudy 73% 2.7 m/s 1.3 high 16.7h
July Good 13° - 22° 17° 80 mm overcast 71% 2.5 m/s 1.3 high 16.2h
August Good 12° - 22° 17° 72 mm partly cloudy 70% 2.3 m/s 1.0 high 14.6h
September Good 9° - 17° 13° 67 mm partly cloudy 76% 2.4 m/s 0.6 moderate 12.5h
October Acceptable 5° - 11° 7° 55 mm overcast 84% 2.5 m/s 0.2 low 10.4h
November Poor 1° - 5° 3° 49 mm overcast 93% 2.8 m/s 0.1 low 8.4h
December Poor -3° - 1° -4° 49 mm overcast 95% 2.8 m/s 0.0 low 7.3h