Lake · Poland
Jeziorak
Lake in Poland
- Area
- 33.2km²
- Max depth
- 13m
- Average depth
- 10m
- Elevation
- 97m a.s.l.
- Shoreline
- 132km
- Volume
- 0.335km³
Jeziorak is a lake in Poland. It covers 33.2 km². On average it is 10 m deep, and 13 m at its deepest point. Its surface lies 97 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Jeziorak?
The water is warmest in July, around 23 °C at the surface, and coldest in January, around 0 °C. The surface averages 20 °C or more from June to August: comfortable for most swimmers.
The lake usually freezes over for about 83 days a year, from around 7 December to 27 February.
On the shore, afternoons reach 24 °C on average in July and -1 °C in January. The driest month is April (39 mm of rain), the wettest July (87 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (100 readings). Shallow bays and beaches are often warmer.
From above
The whole lake from space
Month by month
The year at the lake, month by month
Not a forecast: these are averages over many years. Water is the 2013–2021 average; air, rain, sun and wind are the 1991–2020 average.
Water: 2013–2021 averageClimate: 1991–2020 average
| Month | Water°C | Water high°C | Air high°C | Air low°C | Rainmm | Rainy daysdays | Sunh/day | Windkm/h |
|---|---|---|---|---|---|---|---|---|
| January | Ice | — | -1 | -6 | 52 | 13 | 0.4 | 20 |
| February | Ice | — | 1 | -5 | 39 | 11 | 1.9 | 19 |
| March | 3 | 6 | 6 | -2 | 43 | 10 | 4.0 | 18 |
| April | 10 | 13 | 13 | 2 | 39 | 9 | 7.0 | 16 |
| May | 16 | 19 | 18 | 8 | 64 | 12 | 8.6 | 15 |
| June | 21 | 22 | 22 | 11 | 67 | 14 | 8.9 | 15 |
| July | 23 | 23 | 24 | 14 | 87 | 15 | 7.6 | 15 |
| August | 21 | 22 | 24 | 14 | 69 | 13 | 7.0 | 14 |
| September | 16 | 19 | 19 | 9 | 56 | 11 | 5.5 | 16 |
| October | 10 | 13 | 12 | 4 | 59 | 11 | 2.7 | 18 |
| November | 4 | 6 | 6 | 1 | 58 | 12 | 0.5 | 18 |
| December | Ice | — | 1 | -3 | 57 | 13 | 0.1 | 19 |
Water: LakeTEMP (Landsat 8, 2013–2021). Air, rain, sun and wind: NASA POWER, 1991–2020 averages. A rainy day has at least 1 mm of rain. Sunshine hours are derived from measured solar radiation.
Size & depth
How big, how deep
- On average, water stays in the lake for about 3.3 years before flowing out.
- Its catchment drains 416 km² of land.
- About 3.2 m³ of water flow out every second, on average.
- Its shoreline is 6.5 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Jeziorak
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 5beaches and swimming spots
Plaża Miejska
- 9campsites
Pole namiotowe Binduga, Pole namiotowe Złoty Różek, EkoMarina Siemiany, Leśna, Na Cyplu and 4 more
- 1boat hire and water-sport clubs
Słonik - Wypożyczalnia kajaków - sloniksplywy.pl
- 20marinas and slipways
Slip Do Małych Łodzi, Przystań Makowo, Ośrodek doświadczalny Politechniki Gdańskiej w Iławie, Czarter Jachtów "Jeziorak", "Pod Omegą" sp.j. Stanisław Kasprzak and 15 more
- 4ferry piers
- 5viewpoints
Jezioro Jasne
- 16hotels, B&Bs and chalets
Gospodarstwo Naprawdę Agroturystyczne Przystań!, MAZURSKIE CENTRUM AKTYWNEGO WYPOCZYNKU GERCZAK, Letnisko Chmielówka, Tawerna Kaper, GrandHotel Tiffi and 11 more
- —fishing spots
- 26restaurants and cafés
Towns on the shore
- Iława32,557 people
Nearest airport with scheduled flights: Olsztyn-Mazury Airport (SZY), 97 km in a straight line.
Car hire at SZY airport (Szymany)Discover Cars · Affiliate linkOpenStreetMap is built by volunteers: when a number is low, it may just mean nobody has mapped it yet.
Recent years
How each month compared
Afternoon high on the shore. The first row is the reference, the 1991–2020 average in °C; the years below show the difference from it: warmer in orange, cooler in blue.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1991–2020 average | -1.1 | 0.9 | 5.8 | 12.6 | 18.0 | 21.5 | 24.1 | 23.9 | 19.0 | 12.0 | 5.7 | 1.1 |
| 2020 | +4.7 | +4.7 | +1.3 | ±0.0 | −3.2 | +0.7 | −1.1 | +1.4 | +1.6 | +1.6 | +1.6 | +0.2 |
| 2021 | −0.7 | −3.3 | +0.3 | −2.8 | −2.3 | +2.6 | +1.9 | −2.3 | −0.5 | +1.2 | +1.0 | −2.0 |
| 2022 | +3.4 | +3.6 | +1.5 | −1.9 | −0.7 | +2.2 | −0.1 | +3.0 | −2.2 | +2.7 | −0.2 | −1.3 |
| 2023 | +4.1 | +2.2 | +0.6 | −0.7 | +0.2 | +2.2 | +0.8 | +1.0 | +5.0 | +1.4 | −0.4 | +1.0 |
| 2024 | +1.5 | +5.2 | +3.3 | +1.0 | +2.8 | +1.2 | +0.5 | +1.3 | +3.9 | +1.8 | +0.1 | +2.4 |
| 2025 | +3.8 | +0.5 | +4.1 | +2.3 | −2.1 | +0.5 | −0.5 | −1.3 | +1.1 | −0.1 | −0.6 | +1.5 |
+1 warmer than usual −1 cooler than usual
About these numbers
| Outline, area, depth, volume | HydroLAKES v1.0 (Messager et al. 2016) · CC BY 4.0 |
|---|---|
| Water temperature and ice | LakeTEMP v1 (Korver et al. 2024), Landsat 8 2013–2021 · CC BY 4.0 |
| Air, rain, sun, wind | NASA POWER, 1991–2020 · public domain |
| Names and description | Wikidata (Q1688774) · CC0 |
| Around the shore | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average or a count from a public dataset. Licences and methods: data sources.
