Lake · Austria
Lake Ossiach
Lake in Austria
- Area
- 10.0km²
- Max depth
- 52m
- Average depth
- 17m
- Elevation
- 499m a.s.l.
- Shoreline
- 25km
- Volume
- 0.173km³
Lake Ossiach is a lake in Austria. It covers 10.0 km². On average it is 17 m deep, and 52 m at its deepest point. Its surface lies 499 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Lake Ossiach?
The water is warmest in July, around 24 °C at the surface, and coldest in January, around 2 °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 22 °C on average in July and 0 °C in January. The driest month is January (58 mm of rain), the wettest August (140 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (58 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 | 2 | 2 | 0 | -8 | 58 | 8 | 3.8 | 6 |
| February | 3 | 4 | 1 | -7 | 66 | 8 | 4.6 | 7 |
| March | 7 | 9 | 6 | -3 | 74 | 10 | 5.6 | 7 |
| April | 12 | 15 | 11 | 1 | 83 | 13 | 5.7 | 7 |
| May | 18 | 20 | 16 | 6 | 110 | 16 | 6.2 | 7 |
| June | 23 | 24 | 20 | 10 | 120 | 17 | 7.4 | 6 |
| July | 24 | 24 | 22 | 12 | 125 | 17 | 8.3 | 6 |
| August | 23 | 24 | 22 | 12 | 140 | 16 | 7.4 | 6 |
| September | 20 | 22 | 17 | 7 | 130 | 13 | 5.9 | 6 |
| October | 15 | 18 | 12 | 3 | 118 | 13 | 4.6 | 6 |
| November | 8 | 11 | 6 | 0 | 119 | 12 | 3.1 | 6 |
| December | 4 | 6 | 1 | -6 | 85 | 10 | 3.4 | 6 |
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 8 months before flowing out.
- Its catchment drains 396 km² of land.
- About 7.9 m³ of water flow out every second, on average.
Around the shore
What's around Lake Ossiach
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 12beaches and swimming spots
Strandbad Sattendorf, Gerlitzenbad, Gemeindestrandbad, Strand, Freier Seezugang and 7 more
- 18campsites
See-Areal Steindorf, Seecamping Nagele, Prefelnighof, campingbeach, Seecamping Mentl and 13 more
- 6boat hire and water-sport clubs
Ossiacher See - Gemeindebad St. Andrä, Ossiacher See - Kessel-Strandbad Christa, Ossiacher See - Strandbad Sattendorf, Bootsverleih Ossiach, Ruderverein Villach and 1 more
- 15marinas and slipways
Segelclub Ossiachersee Villach (SCO), Kärnter Yachtklub Ossiachersee, Segelschule Rainer and 12 more
- 9ferry piers
Schiffsstation St. Urban, Schiffsstation Annenheim, Schiffsstation Ossiach, Schiffstation Steindorf, Schiffsstation Sattendorf and 4 more
- 14viewpoints
Jungfernsprung, Peterlewand, Bilderrahmen, Hasslerhügel, Ossiachberg and 9 more
- 65hotels, B&Bs and chalets
Frühstückspension Nagele, Stofflwirt, Landhaus Arztmann, Club Landskron, Schlosspension St. Andrä and 60 more
- 1fishing spots
Forellenstation Prefelnigteich
- 43restaurants and cafés
Towns on the shore
- Landskron4,304 people
- Bodensdorf1,109 people
- Steindorf am Ossiacher See507 people
- Ossiach116 people
- Fresen7 people
Nearest airport with scheduled flights: Klagenfurt Airport (KLU), 29 km in a straight line.
Car hire at KLU airport (Klagenfurt am Wörthersee)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 | -0.2 | 1.1 | 5.7 | 11.3 | 16.0 | 20.3 | 22.3 | 21.9 | 17.0 | 11.9 | 6.0 | 1.0 |
| 2020 | +2.9 | +2.7 | −0.2 | +1.9 | −0.4 | −2.0 | −0.2 | +0.1 | +0.7 | −1.6 | +1.4 | −0.6 |
| 2021 | −2.2 | −0.3 | −0.3 | −3.0 | −2.9 | +1.6 | −0.4 | −1.2 | +1.9 | −0.5 | +0.2 | −1.5 |
| 2022 | −0.6 | +0.1 | +0.3 | −1.5 | +1.2 | +2.4 | +2.6 | +0.9 | −0.9 | +3.9 | +0.9 | −0.4 |
| 2023 | +0.9 | +0.4 | +0.7 | −2.2 | −0.7 | +0.6 | ±0.0 | +0.2 | +2.8 | +3.4 | +0.1 | +1.7 |
| 2024 | +1.1 | +4.8 | +2.5 | +0.8 | −0.4 | −0.5 | +1.3 | +3.0 | −0.3 | +1.3 | +0.3 | +1.3 |
| 2025 | +1.9 | +1.3 | +1.5 | +1.6 | −0.6 | +2.9 | −0.7 | +0.5 | +1.1 | −0.4 | −0.1 | +2.4 |
+1 warmer than usual −1 cooler than usual
SloveniaAbout 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 (Q702260) · 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.
