Jackets
Half of a session is spent on the beach rigging up, waiting for wind or talking to people, and that is where you actually get cold. Neoprene jackets and windproof layers from Mystic and ION.
Neoprene shelter jackets are designed to be thrown on over a wet wetsuit, blocking wind and holding heat while you pack down. They are far more effective than a normal jacket, which soaks through immediately and then makes you colder.
Some models double as a light layer for on-water use in warm conditions. Look for a decent hood and a cut long enough to cover your lower back when you sit down.