SWIMMING AND WATER TEMPERATURE INDEX
Here’s our full index we use to offer a guide to water temperature and comfort level for swimming. This is a guide only and in no way should be used to dictate how long to spend in water.
Water Temperature of the Sea Below 0°C (32°F)
For swimming this is considered extremely cold. It’s possible you would need to clear surface ice to gain access to the water and unless suitably protected with insulated waterproof clothing hypothermia would very quickly occur.
Water Temperature of the Sea Below 8°C (46°F)
For swimming this is considered very cold and even the most hardy among us would be foolhardy to venture in for a swim and risk hypothermia if exposed for any more than a few minutes.
Water Temperature of the Sea Below 13°C (55°F)
For swimming this is considered cold and even the most hardy among us would find any more than a few minutes in the water uncomfortable.
Water Temperature of the Sea Below 16°C (61°F)
For swimming this is considered cool and for most would feel bracing to say the least. The more hardy among us may enjoy a quick dip.
Water Temperature of the Sea Below 19°C (66°F)
For swimming this is considered relatively cool and though enjoyed by the more hardy among us, any more than 10-20 minutes in the sea would leave you feeling refreshed to say the least.
Water Temperature of the Sea Below 22°C (72°F)
For swimming this is considered fairly warm and should be enjoyed by most, though some people may still find it a little too cool for their liking.
Water Temperature of the Sea Below 26°C (79°F)
For swimming this is considered warm and would be enjoyed by all, even those who would normally suggest the water was ‘to cold’ for a swim.
Water Temperature of the Sea Equal to or Above 26°C (79°F)
For swimming in this is considered very warm and would be enjoyed be all. With this temperature you can stay active in the water for extended periods of time without feeling uncomfortable.