4 degrees

At this time of the year the water temps drop to almost unbearable lows. Of course you are wearing one of these super high-tech wetsuits that give you that jacuzzi feeling for the first 30 min, but after that the comfort drops quickly. Especially when you are diving under a wave and your face is exposed to the almost freezing water, it feels like somebody is giving you a smack in the face. Usually the conditions have to be very good to convince me to go for a sesh, but if you drank a bit too much the night before and you are hang over there is no better cure.