Lake · Finland
Juojärvi
Lake in Eastern Finland
- Area
- 226km²
- Max depth
- 44m
- Average depth
- 22m
- Elevation
- 91m a.s.l.
- Shoreline
- 420km
- Volume
- 5.1km³
Juojärvi is a lake in Finland. It covers 226 km². On average it is 22 m deep, and 44 m at its deepest point. Its surface lies 91 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Juojärvi?
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 156 days a year, from around 13 November to 17 April.
On the shore, afternoons reach 21 °C on average in July and -9 °C in January. The driest month is March (44 mm of rain), the wettest July (111 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (120 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 | — | -9 | -14 | 54 | 13 | 0.7 | 12 |
| February | Ice | — | -7 | -14 | 45 | 12 | 2.2 | 12 |
| March | Ice | — | -2 | -8 | 44 | 12 | 5.5 | 13 |
| April | Ice | — | 5 | 0 | 51 | 12 | 6.7 | 13 |
| May | 8 | 11 | 14 | 6 | 79 | 14 | 8.0 | 12 |
| June | 15 | 18 | 18 | 11 | 106 | 16 | 8.6 | 11 |
| July | 19 | 19 | 21 | 15 | 111 | 18 | 8.0 | 10 |
| August | 18 | 19 | 19 | 13 | 100 | 17 | 6.5 | 10 |
| September | 14 | 16 | 13 | 8 | 84 | 14 | 3.6 | 12 |
| October | 7 | 11 | 5 | 1 | 75 | 15 | 1.1 | 11 |
| November | Ice | — | -1 | -5 | 70 | 14 | 0.0 | 11 |
| December | Ice | — | -6 | -10 | 66 | 15 | 0.1 | 12 |
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 7.3 years before flowing out.
- Its catchment drains 1,981 km² of land.
- About 22 m³ of water flow out every second, on average.
- Its shoreline is 7.9 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Juojärvi
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 10beaches and swimming spots
Talviranta, Somerhiekka, Selkähiekka, Isäntähiekka, Emäntähiekka and 5 more
- 3campsites
Juojärven Helmi, Viihdekeskus Hojo Hojo
- —boat hire and water-sport clubs
- 5marinas and slipways
Juurikkasalmen veneluiska
- —ferry piers
- 1viewpoints
- 3hotels, B&Bs and chalets
Opistohotelli, Luostarihotelli, Pikkuhotelli
- —fishing spots
- 2restaurants and cafés
Towns on the shore
- Tuusniemi2,312 people
Nearest airport with scheduled flights: Joensuu Airport (JOE), 51 km in a straight line.
Car hire at JOE airport (Joensuu)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 | -8.8 | -7.2 | -2.1 | 5.1 | 13.5 | 17.8 | 21.1 | 18.8 | 13.3 | 5.0 | -1.4 | -5.7 |
| 2020 | +7.7 | +5.3 | +3.3 | −1.3 | −2.4 | +3.0 | −2.1 | −0.2 | +0.9 | +2.2 | +2.8 | +1.2 |
| 2021 | −1.6 | −4.3 | −0.5 | +0.9 | −0.7 | +4.8 | +2.9 | −1.2 | −3.1 | +1.8 | +0.3 | −3.9 |
| 2022 | +1.8 | +3.1 | +0.5 | −2.2 | −1.5 | +1.6 | +0.2 | +2.4 | −2.3 | +1.8 | −0.7 | −0.8 |
| 2023 | +3.9 | +2.2 | −0.8 | −1.5 | +0.1 | +1.4 | −1.9 | +1.6 | +3.2 | −1.7 | −4.1 | −3.9 |
| 2024 | −2.1 | +0.6 | +1.3 | −2.5 | +1.7 | +3.0 | +1.3 | +1.9 | +4.1 | +2.5 | +2.1 | +1.5 |
| 2025 | +3.4 | +1.7 | +3.0 | +1.2 | −1.2 | −0.6 | +2.6 | −0.5 | +2.4 | +1.7 | +2.7 | +3.1 |
+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 (Q1475224) · 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.
