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Why is Loch Ness water so cold?

Even on the hottest Summer's day, it is still very cold in Loch Ness. This is due to the depth of the loch - the surface might warm slightly, but it is a lot colder below, and this can put you at risk of cold water shock, or hypothermia.



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Loch Ness is the largest body of water in Scotland by volume and contains more water than all the Lakes in England and Wales combined. It is in fact so deep, that Loch Ness never freezes over, even in the harshest of Scottish Winters, as the water cooled from the air will sink and be replaced by hot water below it.

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Loch Ness Water's special filtering process has been developed in close conjunction with the Scottish governing food and drink agencies. Each batch of water is rigorously tested to ensure that consumers can be fully assured of the quality standards and has full traceability.

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What is the warmest loch in Scotland? One of the warmest Scottish lochs is Loch Lubnaig which can be found in the Scottish Highlands. If you fancy trying some wild swimming whilst in Scotland, Loch Lubnaig is a good place to start.

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Loch Morar is the deepest loch – at 310m. Loch Ness is the largest loch by volume – it contains more water (7,452 million cubic metres) than all English and Welsh lakes together.

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Unsafe levels of sewage pollution were also recorded at freshwater bathing spots like Dores on the shore of Loch Ness. Sewage pollution limits exceeded safe levels at 14 beaches where water quality is classed as 'excellent', including Dunnet.

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Edgley made his first attempt at the record in September 2022. He dove into Loch Ness–just outside of Inverness, Scotland–aiming to swim swim 100 miles (160 km). That would have set the world record for longest continuous swim in tideless water. He ultimately fell short of his goal, stopping at 49 miles (79 km).

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Fishing for ferox trout, sea trout, brown trout and the mighty Atlantic salmon - you never know what you will catch in Loch Ness! Half day or full day trips.

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Loch Ness has the largest volume of any Scottish loch. It contains more water than all the English and Welsh lakes put together! It's also the coldest - the water temperature averages a chilly 5 degrees Celsius all year round.

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Situated in south-east Siberia, the 3.15-million-ha Lake Baikal is the oldest (25 million years) and deepest (1,700 m) lake in the world. It contains 20% of the world's total unfrozen freshwater reserve.

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The deepest lake in the UK is Loch Morar, Scotland at 310m depth. This is 80m deeper than Loch Ness, the second deepest lake in the UK and deeper than the height of the Shard, the highest building in London. The largest lake by perimeter length in the UK is Loch Awe, Scotland at 41km.

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In general, the western coastal areas of Scotland are warmer than the east and inland areas, due to the influence of the Atlantic currents, and the colder surface temperatures of the North Sea. The highest official temperature recorded was 34.8 °C (94.6 °F) in Charterhall, Scottish Borders on 19 July 2022.

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Toilets Around Loch Ness Luckily, there are public toilets available at both places. Inverness toilets include ones at the train station, and at the Inverness Museum and Art Gallery. Fort Augustus toilets are in the Caledonian Canal Centre and at the main car park.

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