Lake · Finland
Näsijärvi
Lake in Pirkanmaa, Finland
- Area
- 304km²
- Max depth
- 63m
- Average depth
- 30m
- Elevation
- 90m a.s.l.
- Shoreline
- 634km
- Volume
- 9.0km³
Näsijärvi is a lake in Finland. It covers 304 km². On average it is 30 m deep, and 63 m at its deepest point. Its surface lies 90 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Näsijärvi?
The water is warmest in July, around 19 °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 125 days a year, from around 13 December to 16 April.
On the shore, afternoons reach 22 °C on average in July and -5 °C in January. The driest month is March (41 mm of rain), the wettest June (89 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (83 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 | — | -5 | -10 | 55 | 13 | 0.4 | 10 |
| February | Ice | — | -5 | -11 | 44 | 11 | 1.9 | 10 |
| March | Ice | — | 0 | -7 | 41 | 11 | 5.1 | 10 |
| April | Ice | — | 8 | -1 | 46 | 10 | 6.6 | 10 |
| May | 8 | 12 | 15 | 5 | 60 | 11 | 8.4 | 9 |
| June | 15 | 18 | 18 | 10 | 89 | 15 | 8.5 | 9 |
| July | 19 | 19 | 22 | 13 | 88 | 16 | 8.0 | 8 |
| August | 18 | 19 | 20 | 12 | 78 | 15 | 6.7 | 8 |
| September | 15 | 17 | 14 | 7 | 69 | 12 | 4.1 | 9 |
| October | 10 | 12 | 6 | 2 | 75 | 14 | 1.8 | 9 |
| November | 5 | 7 | 1 | -2 | 67 | 15 | 0.1 | 9 |
| 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 4.1 years before flowing out.
- Its catchment drains 7,723 km² of land.
- About 69 m³ of water flow out every second, on average.
- Its shoreline is 10.3 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Näsijärvi
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 42beaches and swimming spots
Viitapohjan uimaranta, Terälahden uimaranta, Sisaruspohjan uimaranta, Pohjankylän uimaranta, Tahmelan uimaranta and 37 more
- 3campsites
Valkeekiven leirikeskus, Torpan kurssikeskus
- 1boat hire and water-sport clubs
Niihamajärvi
- 55marinas and slipways
Jänissaaren pienvenesatama, Halkoniemen pienvenesatama, Kurun satama, Katiskalahden venesatama, Kämmenniemen venesatama and 50 more
- 2ferry piers
Laukontori, Mustalahti
- 26viewpoints
Nimikallio, Haulinkallio and 24 more
- 29hotels, B&Bs and chalets
Scandic Tampere City, Hotelli Haapalinna, Forenom Koski, Omena-hotelli Tampere, Scandic Postitalo and 24 more
- —fishing spots
- 288restaurants and cafés
Towns on the shore
- Tampere260,646 people
- Linnainmaa6,453 people
- Tammela5,955 people
- Tampella5,590 people
- Lentävänniemi5,433 people
- Amuri5,353 people
- Kaleva5,117 people
- Atala4,679 people
Nearest airport with scheduled flights: Tampere-Pirkkala Airport (TMP), 18 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 | -5.4 | -4.7 | -0.1 | 7.5 | 14.7 | 18.5 | 21.5 | 19.6 | 14.2 | 6.5 | 1.0 | -2.8 |
| 2020 | +6.7 | +5.2 | +2.6 | −1.2 | −2.6 | +4.1 | −2.7 | +0.5 | +0.9 | +2.1 | +3.1 | +1.8 |
| 2021 | −1.9 | −2.8 | +0.4 | ±0.0 | −0.9 | +4.6 | +2.3 | −1.4 | −2.5 | +2.0 | +0.1 | −3.7 |
| 2022 | +1.4 | +2.4 | +1.3 | −1.3 | −1.4 | +2.0 | −0.6 | +2.1 | −1.8 | +2.6 | −0.1 | −1.7 |
| 2023 | +2.9 | +2.7 | −0.9 | +1.1 | ±0.0 | +2.2 | −1.4 | +0.5 | +3.1 | −1.7 | −4.0 | −4.5 |
| 2024 | −3.3 | +0.1 | +1.0 | −2.3 | +4.0 | +2.0 | +0.1 | +1.1 | +2.8 | +2.6 | +1.3 | +2.0 |
| 2025 | +3.2 | +2.3 | +3.8 | +1.0 | −2.0 | −0.9 | +2.3 | −1.3 | +2.1 | +1.4 | +2.4 | +3.6 |
+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 (Q824371) · 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.
