Lake · Finland
Längelmävesi
Lake of Finland
- Area
- 178km²
- Average depth
- 17m
- Elevation
- 80m a.s.l.
- Shoreline
- 386km
- Volume
- 3.0km³
Längelmävesi is a lake in Finland. It covers 178 km². On average it is 17 m deep. Its surface lies 80 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Längelmävesi?
The water is warmest in July, around 20 °C at the surface, and coldest in January, around 0 °C. It rarely averages 20 °C, but it stays above 17 °C from July to August: brisk, refreshing swimming.
The lake usually freezes over for about 142 days a year, from around 19 November to 9 April.
On the shore, afternoons reach 21 °C on average in July and -6 °C in January. The driest month is March (41 mm of rain), the wettest June (93 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (124 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 | — | -6 | -11 | 55 | 13 | 0.5 | 10 |
| February | Ice | — | -5 | -11 | 42 | 11 | 2.0 | 10 |
| March | Ice | — | 0 | -7 | 41 | 12 | 5.0 | 10 |
| April | 2 | 6 | 7 | 0 | 47 | 10 | 6.5 | 10 |
| May | 10 | 14 | 15 | 6 | 61 | 12 | 8.2 | 10 |
| June | 17 | 19 | 18 | 10 | 93 | 15 | 8.1 | 9 |
| July | 20 | 20 | 21 | 14 | 91 | 16 | 8.0 | 8 |
| August | 19 | 20 | 20 | 12 | 80 | 15 | 6.5 | 9 |
| September | 15 | 17 | 14 | 8 | 69 | 13 | 3.9 | 10 |
| October | 9 | 12 | 6 | 2 | 74 | 14 | 1.6 | 9 |
| November | 2 | 5 | 1 | -3 | 66 | 15 | 0.0 | 10 |
| December | Ice | — | -3 | -7 | 64 | 15 | 0.1 | 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 6.8 years before flowing out.
- Its catchment drains 1,552 km² of land.
- About 14 m³ of water flow out every second, on average.
- Its shoreline is 8.2 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Längelmävesi
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 9beaches and swimming spots
Raikun uimaranta, Hiedan uimaranta and 7 more
- 4campsites
Säynäniemen leirintä, Lake escape destination
- 3boat hire and water-sport clubs
Kesäpäivä Rent & Adventures, Kuhmalahden Siuronsalmen uimarannan kanootit, Kaupunkivene (Siuronsalmen uimaranta)
- 9marinas and slipways
Länkipohjan sataman veneluiska, Rönnin veneluiska, Rönni, Länkipohjan venesatama and 5 more
- —ferry piers
- 8viewpoints
Pohtiolampi, Lintutorni, Keisarinharjun näköalatasanne, Vehoniemen näkötorni and 4 more
- 5hotels, B&Bs and chalets
Puuro & Peti Villanen, Lomakylä Solaniemi, AaltoSaha Kokous- ja Juhlahuvila, Majatalo Villanen, Lammassaari
- —fishing spots
- 12restaurants and cafés
Towns on the shore
- Sahalahti2,141 people
- Kuhmalahden Kirkonkylä1,143 people
Nearest airport with scheduled flights: Tampere-Pirkkala Airport (TMP), 46 km in a straight line.
Car hire at TMP airport (Tampere / Pirkkala)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 | -5.8 | -5.0 | -0.4 | 7.3 | 14.6 | 18.4 | 21.4 | 19.6 | 14.1 | 6.3 | 0.7 | -3.1 |
| 2020 | +6.9 | +5.2 | +2.8 | −1.3 | −2.5 | +3.9 | −2.5 | +0.4 | +0.9 | +2.2 | +3.1 | +1.9 |
| 2021 | −1.9 | −3.1 | +0.1 | ±0.0 | −0.9 | +4.6 | +2.5 | −1.5 | −2.7 | +2.0 | +0.2 | −3.8 |
| 2022 | +1.4 | +2.6 | +1.0 | −1.2 | −1.2 | +2.0 | −0.4 | +2.2 | −1.9 | +2.5 | −0.2 | −1.6 |
| 2023 | +3.0 | +2.7 | −0.7 | +1.3 | ±0.0 | +2.1 | −1.4 | +0.7 | +3.2 | −1.7 | −3.9 | −4.4 |
| 2024 | −3.1 | +0.2 | +1.1 | −2.2 | +3.9 | +2.3 | +0.1 | +1.1 | +3.0 | +2.6 | +1.5 | +2.0 |
| 2025 | +3.3 | +2.3 | +3.9 | +1.0 | −1.9 | −0.9 | +2.4 | −1.2 | +2.2 | +1.5 | +2.5 | +3.5 |
+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 (Q1673116) · 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.
