Lewis Pugh

Introducing a precise open water swimming temperature scale

I get asked various questions related to cold because I like to write about it. Those questions often inspire further writing ideas. One thing I realised was there was no good agreement on cold water. A poll of open water gave the following results. Under 5ºC (41ºF) – 0% Under 10ºC (50ºF) – 7% Under 12.5°C (54.5°F)…

Ocean Temperature Variation

Those who don’t swim in the swim much are often confused about what temperature to expect. The specific heat capacity of the ocean is greater than land or the atmosphere. This mean it’s will stay at a specific temperature and not quickly change. The volume of the ocean contributes to it retaining heat, as only…