Pay attention to sizing and fit too. Though wetsuits are getting more and more flexible, if your suit is too tight, it will restrict blood flow, making you feel colder quicker. If you're surfing icy water, maybe even consider a heated suit or vest.
Forget the macho banter and get a good pair of boots, gloves and a hood too. You can't surf if you can't feel your feet, and stubbing clumsy toes on sharp rocks somehow hurts even more, when your feet are useless lumps of frozen flesh.
A good hood will help prevent both ice cream headaches on duck dives and the dreaded exostosis… Trust me; no one wants a drill in the ear canal.
Consider buying a couple of re-usable hand warmers, and putting them into your boots (on top of your feet) and in your gloves when it's really cold. After your session, just take them home and boil them for 10 minutes to re-activate the chemicals.
2. Start your cold water session on the right note
Don't set yourself up for failure before you've even started. Fuel yourself properly before your imminent gladiatorial contest with the ocean with a good dose of complex carbs, protein, and water. Make sure you're warm before getting changed – blast the heaters in the car on the way to the beach. Layer up with a quality down jacket for the pre-session surf check.
Stretch and warm up on the beach before getting in the water. When you immerse yourself in icy water, your body's natural defense mechanism is to reduce blood flow to your skin and extremities; the aim is to reduce heat loss from the skin and keep warm blood in your core to protect vital organs.
Unfortunately, this can also make your hands and feet near-unusable – which rather defeats the whole object of going surfing.
Warming up before heading into the water gets your blood pumping right from the start, extending the amount of time you can feel your toes. This is also one of the benefits of heated suits – when your core is warm, your body feels less need to shut off blood flow, so your feet stay warm and functioning for longer.
3. Moisturiser and Vaseline to keep those lips from cracking
Spending a lot of time in cold water and strong winds is pretty disastrous for your skin and lips. No-one likes dry, cracked lips, so do yourself a favor and rub in a liberal amount of moisturizer – the thicker and denser the better – before your session. Put a layer of Vaseline over the top to lock the moisture, and repeat after your post-surf shower. Your boy/girlfriend will be thankful - you're welcome!