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Water temperature in Loch Ness in May

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Is it warm enough to swim in Loch Ness in May? Average water temperature in Loch Ness in May is 10°C and therefore is not suitable for comfortable swimming. The warmest water in Loch Ness in May is 15°C, and the coldest is 5°C. To find out the water temperature today and in the coming days, go to Current water temperature in Loch Ness

Changes water temperature in Loch Ness in May 2025, 2024

To get an accurate forecast for the water temperature in Loch Ness for any chosen month, compare two years within a 10 year range using the chart below.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024
1 May9°C5°C
2 May9°C6°C
3 May9°C6°C
4 May9°C6°C
5 May9°C6°C
6 May10°C6°C
7 May10°C6°C
8 May11°C6°C
9 May12°C7°C
10 May11°C 
11 May11°C7°C
12 May11°C7°C
13 May11°C7°C
14 May12°C7°C
15 May12°C8°C
Day 2025 2024
16 May12°C8°C
17 May12°C8°C
18 May12°C8°C
19 May12°C8°C
20 May12°C9°C
21 May13°C9°C
22 May13°C9°C
23 May12°C9°C
24 May12°C9°C
25 May11°C9°C
26 May11°C9°C
27 May11°C9°C
28 May11°C9°C
29 May11°C9°C
30 May11°C9°C
31 May12°C9°C

Loch Ness water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in May?

Want to know where the water temperature in May is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

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  • Scotland
  • Very chilly early evening swim
  • From Garron Bridge, in June.
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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Loch Ness is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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