Lake · Norway
Byglandsfjorden
Lake in Bygland and Evje og Hornnes, Agder, Norway
- Area
- 44.6km²
- Max depth
- 167m
- Average depth
- 49m
- Elevation
- 204m a.s.l.
- Shoreline
- 129km
- Volume
- 2.2km³
Byglandsfjorden is a lake in Norway. It covers 44.6 km². On average it is 49 m deep, and 167 m at its deepest point. Its surface lies 204 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Byglandsfjorden?
The water is warmest in July, around 18 °C at the surface, and coldest in February, around 0 °C. It rarely averages 20 °C, but it stays above 17 °C in July: brisk, refreshing swimming.
The lake usually freezes over for about 72 days a year, from around 13 January to 25 March.
On the shore, afternoons reach 19 °C on average in July and -1 °C in January. The driest month is April (94 mm of rain), the wettest October (191 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (97 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 | — | -1 | -5 | 182 | 20 | 0.3 | 11 |
| February | Ice | — | 0 | -6 | 130 | 17 | 1.6 | 10 |
| March | Ice | — | 2 | -4 | 108 | 16 | 3.9 | 10 |
| April | 3 | 5 | 8 | 0 | 94 | 14 | 5.8 | 9 |
| May | 8 | 12 | 13 | 4 | 108 | 14 | 7.5 | 8 |
| June | 14 | 17 | 17 | 8 | 106 | 14 | 8.5 | 8 |
| July | 18 | 18 | 19 | 10 | 130 | 16 | 7.1 | 8 |
| August | 17 | 18 | 17 | 9 | 154 | 17 | 5.6 | 8 |
| September | 13 | 15 | 14 | 7 | 156 | 18 | 4.0 | 9 |
| October | 9 | 11 | 8 | 3 | 191 | 20 | 2.1 | 9 |
| November | 5 | 7 | 4 | -1 | 177 | 20 | 0.8 | 10 |
| December | 2 | 3 | 1 | -4 | 181 | 20 | 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 9 months before flowing out.
- Its catchment drains 2,821 km² of land.
- About 98 m³ of water flow out every second, on average.
- Its shoreline is 5.5 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Byglandsfjorden
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 11beaches and swimming spots
Danskeleiren, Fagersand, Dalebukta, Rakkenes, Berenes and 6 more
- 4campsites
Longerak Hyttesenter og Camping, Støylen Camping, Reiårsfossen Camp, Neset Camping
- —boat hire and water-sport clubs
- 5marinas and slipways
Byglandsfjord Båtforening, Bjoren Vinteropplag, Bygland brygge, Bygland båtforening
- —ferry piers
- 6viewpoints
Neset, Fånefjell, Ørnenapen, Øvstefjødd and 2 more
- 3hotels, B&Bs and chalets
Revsnes hotel, Ose Turistheim, Bygdalen Fjordhytter
- —fishing spots
- 2restaurants and cafés
Towns on the shore
- Bygland
Nearest airport with scheduled flights: Kristiansand Airport (KRS), 59 km in a straight line.
Car hire at KRS airport (Kristiansand)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 | -0.6 | -0.5 | 2.3 | 7.8 | 13.1 | 16.8 | 18.6 | 17.3 | 13.5 | 8.0 | 3.5 | 0.7 |
| 2020 | +4.4 | +3.1 | +1.2 | +0.8 | −1.4 | +2.4 | −3.1 | +1.8 | +0.2 | +1.0 | +2.8 | +1.3 |
| 2021 | −3.3 | −2.3 | +2.0 | −0.6 | −0.7 | +2.0 | +1.8 | +0.5 | +1.4 | +1.7 | +1.4 | −2.0 |
| 2022 | +2.9 | +2.4 | +2.8 | +0.2 | −0.5 | +0.6 | −0.4 | +1.5 | +0.4 | +2.2 | +1.9 | −2.6 |
| 2023 | +0.8 | +3.6 | −0.8 | −0.3 | +0.3 | +4.1 | −1.7 | −0.3 | +2.7 | −1.5 | −3.2 | −1.6 |
| 2024 | −2.0 | +0.9 | +0.7 | −0.8 | +4.0 | −0.7 | −1.0 | −0.3 | +1.6 | +1.6 | +1.0 | +2.3 |
| 2025 | +0.6 | +1.2 | +3.5 | +4.0 | +1.9 | −0.6 | +2.7 | +0.4 | +0.7 | +1.6 | +1.3 | +3.0 |
+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 (Q2455280) · 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.
