Reservoir · Germany
Forggensee
Reservoir in Bavaria, Germany
- Area
- 12.3km²
- Max depth
- 41m
- Average depth
- 13m
- Elevation
- 773m a.s.l.
- Shoreline
- 30km
- Volume
- 0.165km³
Forggensee is a reservoir in Germany. It covers 12.3 km². On average it is 13 m deep, and 41 m at its deepest point. Its surface lies 773 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Forggensee?
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 from July to August: comfortable for most swimmers.
The lake usually freezes over for about 34 days a year, from around 30 December to 1 February.
On the shore, afternoons reach 20 °C on average in July and 0 °C in January. The driest month is February (71 mm of rain), the wettest August (180 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (98 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 | 92 | 13 | 3.3 | 10 |
| February | 1 | 3 | 0 | -8 | 71 | 12 | 4.6 | 10 |
| March | 5 | 8 | 5 | -4 | 87 | 16 | 5.5 | 10 |
| April | 10 | 12 | 10 | 0 | 85 | 15 | 6.0 | 8 |
| May | 15 | 17 | 14 | 5 | 148 | 20 | 6.1 | 8 |
| June | 19 | 20 | 18 | 9 | 170 | 21 | 7.0 | 8 |
| July | 21 | 21 | 20 | 11 | 166 | 20 | 7.3 | 8 |
| August | 20 | 21 | 19 | 10 | 180 | 19 | 6.8 | 7 |
| September | 18 | 19 | 15 | 6 | 118 | 16 | 5.5 | 8 |
| October | 13 | 15 | 11 | 2 | 92 | 13 | 4.6 | 8 |
| November | 7 | 10 | 5 | -2 | 76 | 13 | 3.0 | 9 |
| December | 2 | 4 | 1 | -6 | 85 | 14 | 2.8 | 10 |
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 1,578 km² of land.
- About 43 m³ of water flow out every second, on average.
Around the shore
What's around Forggensee
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 18beaches and swimming spots
Familienbad Forggensee, Naturbadeplatz Illasbergsee, Liegewiese am Bootshafen, Badeplatz Hegratsrieder See, FKK Badeplatz and 13 more
- 9campsites
Mangmühlenzeltplatz, Camping Brunnen, Campingplatz Magdalena, Campingplatz Seewang, Camper's Stop and 4 more
- 2boat hire and water-sport clubs
Ruderclub Forggensee, Segelclub Füssen Forggensee
- 13marinas and slipways
Segelfreunde Marktoberdorf, Bootshafen, Segelclub Dietringen, Segelclub Füssen Forggensee, Forggensee Yachtschule and 8 more
- 8ferry piers
Schwangau Waltenhofen, Schwangau Brunnen, Anlegestelle Tiefental, Rieden Osterreinen, Füssen Bootshafen and 3 more
- 7viewpoints
Aussichtspilz Rieden and 6 more
- 119hotels, B&Bs and chalets
Hotel Filser, Hotel Weinbauer, Hotel Christine, Hotel Huberhof, Hotel Sommer and 114 more
- —fishing spots
- 30restaurants and cafés
Towns on the shore
- Füssen15,608 people
- Schwangau3,505 people
Nearest airport with scheduled flights: Memmingen Allgau Airport (FMM), 56 km in a straight line.
Car hire at FMM airport (Memmingen)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 | -0.4 | 0.4 | 4.7 | 10.1 | 14.2 | 18.2 | 19.8 | 19.4 | 15.1 | 11.3 | 5.3 | 0.7 |
| 2020 | +3.1 | +3.4 | +0.8 | +3.0 | −0.1 | −1.8 | +0.1 | +0.6 | +1.4 | −1.9 | +2.7 | +0.1 |
| 2021 | −1.6 | +3.5 | −0.6 | −2.9 | −3.1 | +2.1 | +0.1 | −2.1 | +2.4 | −0.5 | −0.8 | +0.6 |
| 2022 | +1.1 | +1.6 | +2.6 | −1.0 | +2.0 | +3.0 | +1.5 | +1.4 | −0.9 | +4.2 | +1.4 | +1.4 |
| 2023 | +1.1 | +2.5 | +2.1 | −2.5 | −0.1 | +1.7 | +1.1 | +1.2 | +4.9 | +3.4 | −1.4 | +1.3 |
| 2024 | +1.9 | +4.9 | +2.6 | +0.3 | +0.4 | +0.3 | +1.5 | +2.9 | +0.1 | +2.2 | +1.2 | +0.9 |
| 2025 | +2.1 | +3.3 | +2.9 | +2.5 | −0.7 | +3.7 | −1.3 | +0.9 | +1.3 | −1.2 | +0.4 | +2.9 |
+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 (Q680236) · 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.
