Lake · Germany
Großer Wannsee
Lake near Berlin
- Area
- 15.9km²
- Average depth
- 13m
- Elevation
- 27m a.s.l.
- Shoreline
- 60km
- Volume
- 0.208km³
Großer Wannsee is a lake in Germany. It covers 15.9 km². On average it is 13 m deep. Its surface lies 27 m above sea level.
Plan your visit
Stay, sail and get there
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
The water
How warm is Großer Wannsee?
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.
It does not normally freeze in winter.
On the shore, afternoons reach 26 °C on average in July and 2 °C in January. The driest month is April (28 mm of rain), the wettest July (81 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (59 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 | 0 | 1 | 2 | -3 | 54 | 12 | 0.8 | 19 |
| February | 1 | 3 | 4 | -3 | 38 | 10 | 2.2 | 18 |
| March | 5 | 8 | 8 | -1 | 40 | 11 | 3.6 | 18 |
| April | 11 | 14 | 14 | 4 | 28 | 8 | 6.0 | 16 |
| May | 17 | 19 | 20 | 8 | 53 | 10 | 6.6 | 15 |
| June | 22 | 23 | 24 | 13 | 57 | 12 | 7.0 | 15 |
| July | 23 | 23 | 26 | 15 | 81 | 13 | 6.4 | 15 |
| August | 22 | 23 | 26 | 14 | 58 | 12 | 6.0 | 14 |
| September | 20 | 21 | 21 | 10 | 49 | 9 | 5.0 | 15 |
| October | 14 | 17 | 14 | 5 | 49 | 10 | 2.9 | 16 |
| November | 8 | 11 | 7 | 2 | 49 | 10 | 1.0 | 17 |
| December | 3 | 5 | 3 | -1 | 48 | 12 | 0.4 | 18 |
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 45 days before flowing out.
- Its catchment drains 12,958 km² of land.
- About 54 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 Großer Wannsee
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 69beaches and swimming spots
Badestelle, Kleine Badewiese, Schlachtensee, Radfahrerwiese, Badestelle Alter Hof and 64 more
- 5campsites
Wohnmobil Stellplatz Marina Lanke, Campingplatz Gatow, DCC-Campingplatz Kladow
- 42boat hire and water-sport clubs
Ruder-Club Hevella, Segelschule Große Freiheit, Ruderverein Berlin von 1878, Verein Seglerhaus am Wannsee, Klub am Rupenhorn e.V. and 37 more
- 108marinas and slipways
Pfaueninsel, Wasserzugangsstelle Unterhavel, Wassersportclub Kladow, Segelclub der Schele-Schule, TU-Bootshaus and 103 more
- 27ferry piers
Fährstation Lindwerder, Pfaueninsel, S Wannsee, Alt Kladow, Cecilienhof - Meierei and 22 more
- 68viewpoints
Victoriahöhe, Generalseichen, Großes Fenster, Luisenhöhe, Augustablick and 63 more
- 22hotels, B&Bs and chalets
Hotel und Rasthof Grunewald, Seehotel Grunewald, Bonverde am Wannsee, Hotel Petit, Arcus Hotel garni and 17 more
- —fishing spots
- 120restaurants and cafés
Towns on the shore
- Potsdam184,754 people
- Wilhelmstadt40,463 people
- Kladow16,368 people
- Nikolassee11,642 people
- Wannsee10,126 people
- Gatow3,469 people
Nearest airport with scheduled flights: Berlin Brandenburg Airport (BER), 25 km in a straight line.
Car hire at BER airport (Berlin)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 | 1.9 | 3.7 | 8.0 | 14.5 | 19.6 | 23.9 | 26.0 | 25.5 | 20.6 | 14.0 | 7.4 | 3.1 |
| 2020 | +3.6 | +4.1 | +1.2 | +1.4 | −1.7 | +1.1 | −1.0 | +2.4 | +1.2 | +0.3 | +1.2 | +0.8 |
| 2021 | −0.8 | −0.9 | +0.9 | −3.5 | −3.3 | +3.3 | −0.1 | −2.6 | +0.5 | +0.6 | +0.3 | −0.3 |
| 2022 | +2.7 | +3.8 | +1.6 | −1.6 | +1.3 | +2.8 | +1.0 | +3.1 | −1.1 | +3.7 | +1.0 | −0.3 |
| 2023 | +3.7 | +2.0 | +0.9 | −2.2 | −0.1 | +1.7 | −0.1 | −0.3 | +4.9 | +1.6 | +0.5 | +1.5 |
| 2024 | +1.0 | +5.2 | +3.6 | +0.6 | +1.7 | −0.4 | +0.3 | +2.4 | +2.7 | +2.0 | ±0.0 | +1.7 |
| 2025 | +1.5 | +0.4 | +3.2 | +2.3 | −0.2 | +1.9 | −0.9 | −0.2 | +1.1 | +0.1 | −0.1 | +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 (Q3908364) · 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.
