Reservoir · Finland
Pyhäjärvi
Lake in Pirkanmaa, Finland (near Tampere)
- Area
- 122km²
- Max depth
- 50m
- Average depth
- 5.7m
- Elevation
- 74m a.s.l.
- Shoreline
- 309km
- Volume
- 0.699km³
Pyhäjärvi is a reservoir in Finland. It covers 122 km². On average it is 5.7 m deep, and 50 m at its deepest point. Its surface lies 74 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Pyhäjärvi?
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 June to August: brisk, refreshing swimming.
The lake usually freezes over for about 135 days a year, from around 21 November to 4 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 (74 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 | 3 | 7 | 8 | -1 | 46 | 10 | 6.6 | 10 |
| May | 11 | 14 | 15 | 5 | 60 | 11 | 8.4 | 9 |
| June | 17 | 19 | 18 | 10 | 89 | 15 | 8.5 | 9 |
| July | 20 | 20 | 22 | 13 | 88 | 16 | 8.0 | 8 |
| August | 19 | 20 | 20 | 12 | 78 | 15 | 6.7 | 8 |
| September | 16 | 18 | 14 | 7 | 69 | 12 | 4.1 | 9 |
| October | 9 | 13 | 6 | 2 | 75 | 14 | 1.8 | 9 |
| November | 2 | 5 | 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 months before flowing out.
- Its catchment drains 8,379 km² of land.
- About 72 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 Pyhäjärvi
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 52beaches and swimming spots
Kennonnokan uimaranta, Sorvan uimaranta, Riihilahden uimaranta, Maakalan uimaranta, Tahmelan uimaranta and 47 more
- 4campsites
Tampere Camping Härmälä, Härmälän leirintäalue, Harmala
- 2boat hire and water-sport clubs
Tampereen vesijettivuokraus, Salomaja
- 58marinas and slipways
Nokian satama, Laukontorin pienvenesatama, Rantaperkiön pienvenesatama, Härmälänsaaren pienvenesatama, Uittotunnelin satama and 53 more
- 5ferry piers
Laukontori, Viikinsaari, Myllyranta, Lempäälän kanava, Laukon kartano
- 29viewpoints
Nimikallio, Haulinkallio, Jättikataja, Tuhnunvuori and 25 more
- 28hotels, B&Bs and chalets
Scandic Tampere City, Lapland Hotels Tampere, Scandic Hämeenpuisto, Hotelli Haapalinna, Forenom Koski and 23 more
- —fishing spots
- 381restaurants and cafés
Towns on the shore
- Tampere260,646 people
- Nokia36,486 people
- Lempäälä25,036 people
- Pirkkala21,204 people
- Tammela5,955 people
- Tampella5,590 people
- Lentävänniemi5,433 people
- Amuri5,353 people
Nearest airport with scheduled flights: Tampere-Pirkkala Airport (TMP), 7 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 (Q545559) · 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.
