Reservoir · Switzerland
Klöntalersee
Reservoir
- Area
- 2.6km²
- Max depth
- 49m
- Average depth
- 21m
- Elevation
- 835m a.s.l.
- Shoreline
- 11km
- Volume
- 0.056km³
Klöntalersee is a reservoir in Switzerland. It covers 2.6 km². On average it is 21 m deep, and 49 m at its deepest point. Its surface lies 835 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Klöntalersee?
The water is warmest in July, around 21 °C at the surface, and coldest in January, around 0 °C. The surface averages 20 °C or more in July: comfortable for most swimmers.
The lake usually freezes over for about 102 days a year, from around 11 December to 22 March.
On the shore, afternoons reach 20 °C on average in July and 0 °C in January. The driest month is February (80 mm of rain), the wettest August (190 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (110 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 | — | 0 | -8 | 101 | 14 | 2.5 | 9 |
| February | Ice | — | 0 | -8 | 80 | 12 | 3.8 | 9 |
| March | Ice | — | 5 | -4 | 102 | 15 | 5.3 | 9 |
| April | 6 | 9 | 10 | 1 | 107 | 16 | 6.5 | 8 |
| May | 13 | 16 | 14 | 5 | 163 | 19 | 6.7 | 8 |
| June | 18 | 20 | 18 | 10 | 176 | 20 | 8.0 | 7 |
| July | 21 | 21 | 20 | 12 | 173 | 19 | 8.1 | 7 |
| August | 20 | 21 | 20 | 11 | 190 | 18 | 7.3 | 7 |
| September | 16 | 18 | 16 | 7 | 124 | 15 | 6.0 | 7 |
| October | 11 | 14 | 12 | 3 | 110 | 14 | 4.2 | 8 |
| November | 5 | 8 | 5 | -2 | 103 | 15 | 2.4 | 8 |
| December | Ice | — | 0 | -7 | 106 | 15 | 2.0 | 9 |
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 7 months before flowing out.
- Its catchment drains 82 km² of land.
- About 3.2 m³ of water flow out every second, on average.
Around the shore
What's around Klöntalersee
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 1beaches and swimming spots
- 2campsites
Camping Vorauen, Camping Güntlenau
- 2boat hire and water-sport clubs
Restaurant Rhodannenberg, SUP Klöntalersee
- 2marinas and slipways
- —ferry piers
- 3viewpoints
- 4hotels, B&Bs and chalets
Haus der Inspiration, Rhodannenberg, Ferienheim Saggberg, Ferienheim Plätz Klöntal
- —fishing spots
- 5restaurants and cafés
Nearest airport with scheduled flights: Zürich Airport (ZRH), 58 km in a straight line.
Car hire at ZRH airport (Zurich)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 | -0.5 | 0.4 | 4.7 | 9.7 | 14.0 | 18.2 | 19.8 | 19.5 | 15.5 | 11.5 | 5.1 | 0.4 |
| 2020 | +2.9 | +3.4 | +0.8 | +3.5 | +0.9 | −1.9 | +0.4 | +0.6 | +1.4 | −2.5 | +3.1 | −0.6 |
| 2021 | −1.7 | +1.5 | −0.6 | −2.6 | −3.0 | +1.9 | −0.7 | −1.7 | +2.1 | −0.6 | −0.6 | +0.8 |
| 2022 | +1.2 | +1.7 | +2.4 | −0.1 | +2.2 | +3.1 | +2.2 | +1.6 | −0.5 | +4.3 | +1.3 | +1.1 |
| 2023 | +0.5 | +3.2 | +1.9 | −1.8 | −0.1 | +1.8 | +1.6 | +1.4 | +4.8 | +3.5 | −0.8 | +1.5 |
| 2024 | +1.5 | +5.3 | +2.0 | −0.7 | −0.1 | +0.1 | +1.5 | +3.1 | ±0.0 | +1.5 | +2.1 | +1.2 |
| 2025 | +1.7 | +3.2 | +2.0 | +2.7 | −0.1 | +4.0 | −0.9 | +1.6 | +0.8 | −0.8 | ±0.0 | +2.6 |
+1 warmer than usual −1 cooler than usual
Nearby
More lakes nearby
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 (Q664441) · 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.
