Lake · United Kingdom
Loch Lomond
Freshwater lake in Scotland, UK
- Area
- 68.5km²
- Max depth
- 190m
- Average depth
- 34m
- Elevation
- 9m a.s.l.
- Shoreline
- 126km
- Volume
- 2.3km³
Loch Lomond is a lake in United Kingdom. It covers 68.5 km². On average it is 34 m deep, and 190 m at its deepest point. Its surface lies 9 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Loch Lomond?
The water is warmest in July, around 18 °C at the surface, and coldest in February, around 4 °C. It rarely averages 20 °C, but it stays above 17 °C from July to August: brisk, refreshing swimming.
It does not normally freeze in winter.
On the shore, afternoons reach 17 °C on average in July and 5 °C in January. The driest month is April (76 mm of rain), the wettest October (143 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (60 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 | 4 | 4 | 5 | 1 | 137 | 21 | 0.3 | 22 |
| February | 4 | 4 | 5 | 1 | 102 | 18 | 1.7 | 21 |
| March | 5 | 6 | 7 | 2 | 94 | 18 | 3.0 | 21 |
| April | 7 | 9 | 10 | 3 | 76 | 17 | 5.0 | 18 |
| May | 11 | 14 | 13 | 6 | 92 | 17 | 5.9 | 18 |
| June | 16 | 17 | 16 | 9 | 106 | 19 | 4.6 | 16 |
| July | 18 | 18 | 17 | 10 | 122 | 22 | 4.4 | 16 |
| August | 18 | 18 | 17 | 10 | 137 | 21 | 3.8 | 16 |
| September | 15 | 17 | 14 | 8 | 106 | 18 | 3.1 | 18 |
| October | 11 | 13 | 11 | 6 | 143 | 20 | 1.9 | 19 |
| November | 7 | 9 | 8 | 4 | 134 | 21 | 0.8 | 20 |
| December | 5 | 6 | 5 | 2 | 131 | 20 | 0.3 | 21 |
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 19 months before flowing out.
- Its catchment drains 803 km² of land.
- About 47 m³ of water flow out every second, on average.
- Its shoreline is 4.3 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Loch Lomond
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 108beaches and swimming spots
Luss Bay, Duck Bay Beach, Sallochy Beach and 105 more
- 40campsites
Cashel Camping & Caravan Park Forest Holidays, Lomond Woods Holiday Park, Ardlui Holiday Home Park, Rowardennan Lodge Youth Hostel, Firkin Point (Motorhome) camping permit area March-September and 35 more
- 1boat hire and water-sport clubs
Boat Launch
- 13marinas and slipways
Cameron House on Loch Lomond and 12 more
- 12ferry piers
Tarbert Pier, Port Bawn, North Jetty, Ardleish Pier, Ardlui Pier and 7 more
- 24viewpoints
Loch Lomond View, Viewpoint to the upper waterfall, Loch Lomond Viewpoint and 21 more
- 105hotels, B&Bs and chalets
Rowardennan Hotel, Inversnaid Hotel, Inversnaid Lodge, Rowardennan Lodge Youth Hostel, Coille Mhor Cottage and 100 more
- —fishing spots
- 24restaurants and cafés
Towns on the shore
- Alexandria6,940 people
- Balloch1,743 people
Nearest airport with scheduled flights: Glasgow Airport (GLA), 24 km in a straight line.
Car hire at GLA airport (Glasgow)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 | 4.7 | 4.9 | 6.7 | 9.8 | 13.0 | 15.7 | 17.2 | 16.7 | 14.5 | 11.0 | 7.5 | 5.2 |
| 2020 | +1.8 | +0.6 | +0.2 | +1.1 | +0.9 | +1.1 | −1.7 | +0.9 | −0.2 | −0.5 | +1.3 | −0.1 |
| 2021 | −2.5 | −0.8 | +1.2 | −1.0 | −1.4 | +1.3 | +2.6 | +1.5 | +2.1 | +1.1 | +1.1 | ±0.0 |
| 2022 | +1.7 | +1.5 | +2.2 | +0.8 | +0.4 | +0.3 | +1.0 | +1.5 | +1.1 | +1.3 | +1.8 | −1.2 |
| 2023 | +0.7 | +2.6 | ±0.0 | +0.4 | +1.9 | +3.6 | −0.3 | +0.8 | +2.0 | +0.4 | −0.5 | +0.5 |
| 2024 | −0.2 | +1.7 | +1.1 | +0.2 | +3.1 | −0.6 | −0.4 | −0.3 | ±0.0 | +0.8 | +0.4 | +1.8 |
| 2025 | −0.3 | +0.7 | +2.5 | +2.5 | +2.8 | +0.8 | +1.6 | +1.9 | −0.1 | +0.3 | +0.2 | +1.3 |
+1 warmer than usual −1 cooler than usual
Nearby
More lakes nearby
United Kingdom12.6 km² · 23 km away17°maxLoch AweUnited Kingdom36.5 km² · 46 km away17°maxLoch TayUnited Kingdom24.1 km² · 61 km away16°maxLoch LevenUnited Kingdom13.3 km² · 78 km away18°maxLoch RannochUnited Kingdom18.7 km² · 72 km away15°maxLoch ErichtUnited Kingdom21.9 km² · 79 km away13°maxAbout 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 (Q208926) · 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.
