Lake · Poland
Lake Roś
Lake
- Area
- 15.7km²
- Max depth
- 32m
- Average depth
- 6.1m
- Elevation
- 111m a.s.l.
- Shoreline
- 52km
- Volume
- 0.096km³
Lake Roś is a lake in Poland. It covers 15.7 km². On average it is 6.1 m deep, and 32 m at its deepest point. Its surface lies 111 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Lake Roś?
The water is warmest in July, around 22 °C at the surface, and coldest in January, around 0 °C. The surface averages 20 °C or more from July to August: comfortable for most swimmers.
The lake usually freezes over for about 66 days a year, from around 28 December to 3 March.
On the shore, afternoons reach 24 °C on average in July and -2 °C in January. The driest month is February (37 mm of rain), the wettest July (82 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (87 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 | — | -2 | -8 | 45 | 12 | 0.8 | 19 |
| February | Ice | — | 0 | -7 | 37 | 10 | 2.3 | 18 |
| March | 2 | 4 | 6 | -3 | 39 | 10 | 4.5 | 18 |
| April | 8 | 12 | 13 | 2 | 38 | 10 | 6.6 | 16 |
| May | 15 | 18 | 19 | 8 | 69 | 13 | 7.8 | 15 |
| June | 20 | 21 | 22 | 12 | 72 | 14 | 8.1 | 14 |
| July | 22 | 22 | 24 | 14 | 82 | 14 | 7.4 | 14 |
| August | 21 | 22 | 24 | 14 | 75 | 12 | 6.9 | 13 |
| September | 17 | 20 | 19 | 9 | 54 | 10 | 5.4 | 15 |
| October | 12 | 15 | 11 | 4 | 56 | 11 | 2.9 | 16 |
| November | 6 | 9 | 5 | 0 | 49 | 12 | 0.4 | 17 |
| December | 1 | 3 | 0 | -4 | 47 | 11 | 0.3 | 18 |
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 2 months before flowing out.
- Its catchment drains 2,934 km² of land.
- About 17 m³ of water flow out every second, on average.
- Its shoreline is 3.7 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Lake Roś
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 12beaches and swimming spots
- 6campsites
EkoMarina plaża miejska, Energetyk, Pole namiotowe Stoczek, Ośrodek Wypoczynkowy Energetyk, Ośrodek Wypoczynkowy Wodnik and 1 more
- 1boat hire and water-sport clubs
Kajaki Pisz
- 13marinas and slipways
Wrota Mazur, Camp Pisz, PMOS Pisz, Hotel Roś, Joseph Conrad and 8 more
- —ferry piers
- —viewpoints
- 209hotels, B&Bs and chalets
Hotel Roś, Joseph Conrad, 4 Asy, Nad Pisą, Villa Village and 204 more
- 1fishing spots
- 6restaurants and cafés
Towns on the shore
- Pisz19,232 people
Nearest airport with scheduled flights: Olsztyn-Mazury Airport (SZY), 69 km in a straight line.
Car hire at SZY airport (Szymany)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 | -2.2 | -0.2 | 5.5 | 13.0 | 18.8 | 21.9 | 24.2 | 23.7 | 18.6 | 11.4 | 5.1 | 0.0 |
| 2020 | +5.1 | +5.1 | +2.0 | −0.1 | −2.8 | +1.3 | −0.9 | +0.9 | +1.8 | +1.7 | +1.4 | +0.8 |
| 2021 | −0.7 | −3.4 | ±0.0 | −2.7 | −2.7 | +2.5 | +2.2 | −2.8 | −1.6 | +0.4 | +0.6 | −1.8 |
| 2022 | +3.5 | +4.0 | +1.3 | −2.7 | −1.7 | +1.4 | −1.3 | +2.7 | −2.7 | +2.8 | −0.4 | −1.2 |
| 2023 | +4.3 | +2.1 | +1.1 | −0.3 | −0.7 | +1.0 | −0.2 | +1.6 | +4.9 | +1.5 | −0.4 | +1.3 |
| 2024 | +1.2 | +6.3 | +3.5 | +1.2 | +2.1 | +1.4 | +1.0 | +1.7 | +4.7 | +1.9 | +0.1 | +2.7 |
| 2025 | +4.3 | +1.0 | +4.9 | +2.8 | −2.5 | +0.6 | +0.1 | −0.2 | +1.8 | +0.2 | −0.4 | +2.2 |
+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 (Q607483) · 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.
