Lake · Poland
Śniardwy
Lake in Poland
- Area
- 120km²
- Max depth
- 23m
- Average depth
- 16m
- Elevation
- 112m a.s.l.
- Shoreline
- 167km
- Volume
- 1.9km³
Śniardwy is a lake in Poland. It covers 120 km². On average it is 16 m deep, and 23 m at its deepest point. Its surface lies 112 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Śniardwy?
The water is warmest in July, around 22 °C at the surface, and coldest in January, around 0 °C. The surface averages 20 °C or more from July to August: comfortable for most swimmers.
The lake usually freezes over for about 66 days a year, from around 23 December to 26 February.
On the shore, afternoons reach 23 °C on average in July and -2 °C in January. The driest month is April (40 mm of rain), the wettest July (92 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (86 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 | — | -2 | -8 | 51 | 13 | 0.7 | 19 |
| February | Ice | — | -1 | -7 | 41 | 11 | 2.4 | 18 |
| March | 2 | 5 | 5 | -3 | 43 | 11 | 4.5 | 18 |
| April | 8 | 11 | 12 | 2 | 40 | 10 | 6.7 | 16 |
| May | 15 | 18 | 18 | 8 | 69 | 13 | 8.5 | 15 |
| June | 20 | 21 | 21 | 11 | 78 | 14 | 8.4 | 15 |
| July | 22 | 22 | 23 | 14 | 92 | 15 | 7.7 | 14 |
| August | 21 | 22 | 23 | 13 | 81 | 14 | 6.9 | 14 |
| September | 17 | 20 | 18 | 9 | 57 | 11 | 5.5 | 15 |
| October | 11 | 14 | 11 | 4 | 63 | 12 | 2.8 | 17 |
| November | 5 | 8 | 5 | 0 | 55 | 12 | 0.5 | 18 |
| December | 1 | 3 | 0 | -4 | 52 | 13 | 0.3 | 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 4.0 years before flowing out.
- Its catchment drains 2,514 km² of land.
- About 15 m³ of water flow out every second, on average.
- Its shoreline is 4.3 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Śniardwy
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 19beaches and swimming spots
dzika plaża, Plaża miejska and 17 more
- 27campsites
Galindia, Kruska, Pole Biwakowe "Pod Sosnami", Binduga Młyńska, Binduga Młyńska-Port and 22 more
- —boat hire and water-sport clubs
- 30marinas and slipways
DPT PAN Wierzba, Korektywa, Yachting Poland, Wioska Żeglarska, Port Gąsior and 25 more
- 4ferry piers
Prom "Bełdany", Port Mikołajki, Przystań Kamień
- 9viewpoints
Wysoki Brzeg, Wieża widokowa Nowe Guty and 7 more
- 141hotels, B&Bs and chalets
Gästehaus Kruschka, Panorama, Wioska rowerowa w Piaskach., Mazurski Raj, Klub Mazurski and 136 more
- 1fishing spots
Flosek
- 54restaurants and cafés
Towns on the shore
- Ruciane-Nida4,722 people
- Mikołajki3,851 people
Nearest airport with scheduled flights: Olsztyn-Mazury Airport (SZY), 58 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 | -2.5 | -0.7 | 4.8 | 12.2 | 18.0 | 21.0 | 23.3 | 22.8 | 17.8 | 10.8 | 4.7 | -0.1 |
| 2020 | +5.2 | +5.1 | +2.3 | −0.2 | −2.8 | +1.7 | −0.9 | +1.1 | +1.9 | +1.9 | +1.7 | +0.6 |
| 2021 | −0.7 | −3.3 | +0.2 | −2.4 | −2.5 | +2.9 | +2.7 | −2.4 | −1.3 | +0.7 | +0.7 | −2.0 |
| 2022 | +3.6 | +4.0 | +1.5 | −2.4 | −1.7 | +1.4 | −1.3 | +2.7 | −2.5 | +2.8 | −0.4 | −1.5 |
| 2023 | +4.2 | +2.4 | +1.2 | ±0.0 | −0.2 | +1.3 | ±0.0 | +1.9 | +5.2 | +1.4 | −0.5 | +1.1 |
| 2024 | +1.4 | +6.0 | +3.5 | +1.1 | +2.4 | +1.6 | +1.1 | +1.7 | +4.6 | +1.7 | +0.2 | +2.6 |
| 2025 | +4.5 | +1.1 | +4.7 | +2.7 | −2.6 | +0.2 | +0.3 | −0.3 | +2.1 | +0.4 | −0.5 | +2.2 |
+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 (Q387256) · 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.
