Originally Posted by
Flyingmac
As a flying diver,( or a diving flier), I can tell you that there is little difference in the sea temperature in that area between winter and summer. You will chill through very quickly any time of the year without protective clothing. Heat is leeched from the body 20 times faster in water than air. The average temperature recorded on dives is only 7Celcius.
Found a URL for surface temperatures, and whilst I agree the deeper water won't vary much at all, the surface seems to by up to 10C. But it took a lot of time & swearing to get that far with the site - it seems very slow.
Coastal Observatory, Liverpool Bay, Irish Sea (UK) | Satellite
But even if the water was at it's warmest, MLB should keep wearing her immersion suite.