Lake · Finland
Lake Tuusula
Lake in Uusimaa region, Finland
- Area
- 5.8km²
- Max depth
- 10m
- Average depth
- 8.6m
- Elevation
- 32m a.s.l.
- Shoreline
- 20km
- Volume
- 0.050km³
Lake Tuusula is a lake in Finland. It covers 5.8 km². On average it is 8.6 m deep, and 10 m at its deepest point. Its surface lies 32 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Lake Tuusula?
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 126 days a year, from around 21 November to 26 March.
On the shore, afternoons reach 22 °C on average in July and -4 °C in January. The driest month is March (43 mm of rain), the wettest October (77 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (88 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 | — | -4 | -8 | 56 | 13 | 0.3 | 10 |
| February | Ice | — | -4 | -9 | 46 | 11 | 1.7 | 10 |
| March | Ice | — | 0 | -6 | 43 | 11 | 4.8 | 10 |
| April | 6 | 10 | 8 | -1 | 44 | 10 | 6.8 | 9 |
| May | 14 | 17 | 15 | 5 | 53 | 9 | 8.7 | 8 |
| June | 19 | 21 | 18 | 10 | 75 | 12 | 8.3 | 8 |
| July | 21 | 21 | 22 | 13 | 71 | 13 | 8.3 | 8 |
| August | 20 | 21 | 20 | 12 | 70 | 13 | 6.7 | 8 |
| September | 16 | 18 | 15 | 8 | 62 | 12 | 4.2 | 9 |
| October | 9 | 13 | 8 | 3 | 77 | 13 | 1.9 | 9 |
| November | 2 | 5 | 2 | -1 | 70 | 14 | 0.2 | 10 |
| December | Ice | — | -1 | -5 | 67 | 15 | 0.0 | 11 |
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 6.2 years before flowing out.
- Its catchment drains 25 km² of land.
- About 0.3 m³ of water flow out every second, on average.
Around the shore
What's around Lake Tuusula
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 7beaches and swimming spots
Vanhankylänniemen uimaranta, Tuomalan kylänranta, Tervanokan uimaranta, Koirien uimaranta and 3 more
- —campsites
- 4boat hire and water-sport clubs
Tuusulanjärven Purjehtijat, Tuus-Melojat
- 6marinas and slipways
Vanhankylänniemen veneluiska, Tervanokan venelaiturit and 4 more
- —ferry piers
- 4viewpoints
Lintutorni, Sarvikallio, Lintujen tarkkailukukkula
- 3hotels, B&Bs and chalets
Hotelli Krapi, Gustavelund, Hotelli Sointu
- —fishing spots
- 40restaurants and cafés
Towns on the shore
- Järvenpää46,942 people
- Tuusula42,624 people
Nearest airport with scheduled flights: Helsinki Vantaa Airport (HEL), 15 km in a straight line.
Car hire at HEL airport (Helsinki)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 | -3.7 | -3.6 | 0.5 | 7.8 | 14.7 | 18.5 | 21.8 | 20.3 | 15.2 | 7.7 | 2.5 | -1.2 |
| 2020 | +6.1 | +5.3 | +2.9 | −0.6 | −2.0 | +3.4 | −2.2 | +0.2 | +0.7 | +2.3 | +2.8 | +1.8 |
| 2021 | −1.6 | −3.2 | +0.5 | −0.1 | −1.1 | +4.7 | +2.8 | −1.8 | −2.6 | +1.6 | +0.3 | −3.8 |
| 2022 | +1.5 | +2.3 | +1.7 | −0.9 | −1.4 | +2.1 | −0.2 | +2.3 | −2.0 | +2.3 | +0.6 | −1.1 |
| 2023 | +2.4 | +2.7 | +0.1 | +1.6 | +0.3 | +2.6 | −1.2 | +0.8 | +3.1 | −1.0 | −2.2 | −3.3 |
| 2024 | −2.8 | +0.9 | +2.2 | −1.8 | +3.7 | +2.3 | +0.1 | +1.2 | +3.2 | +2.5 | +1.2 | +2.3 |
| 2025 | +3.5 | +2.0 | +3.7 | +1.2 | −1.1 | −0.8 | +2.3 | −1.1 | +1.8 | +1.2 | +2.5 | +3.2 |
+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 (Q690237) · 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.
