What you wear windsurfing depends almost entirely on water temperature. Air temperature matters less than you'd think — you'll be wet most of the time, and wind chill on wet skin is the real factor. Here's a complete guide organized by water temperature range.
24°C+ (75°F+) — Tropical and Summer Mediterranean
In warm tropical waters, you need minimal neoprene. Board shorts or a swimsuit are fine for the lower body. On top, a rash guard or lycra top protects against sun, harness rash, and minor abrasions from the boom. Consider reef shoes if the launch spot has rocks or coral. Sun protection is your primary concern here: use waterproof SPF 50+, reapply every 90 minutes, and wear a cap or visor that ties on. UV-blocking sunglasses with a retainer strap are recommended.
20–24°C (68–75°F) — Late Spring / Early Autumn Mediterranean
A shorty wetsuit (2mm neoprene with short arms and legs) is ideal here. It takes the chill off without overheating you during exertion. Some riders prefer a long-sleeve 2mm top with board shorts — this offers sun protection and core warmth while keeping the legs free. No boots or gloves needed at this range.
16–20°C (61–68°F) — Northern European Summer / Shoulder Season
This is full-wetsuit territory. A 3/2mm fullsuit (3mm torso, 2mm limbs) is the standard choice. Make sure the suit fits snugly at the neck, wrists, and ankles to minimize water flushing. Neoprene boots (2-3mm) become welcome — they protect your feet from cold and from sharp objects on the launch. Some riders add a thin neoprene cap on windier days.
12–16°C (54–61°F) — Northern European Autumn / Spring
Step up to a 4/3mm or 5/3mm wetsuit. At these temperatures, cold becomes a performance factor — numb hands make it hard to grip the boom, and cold feet reduce your balance. Neoprene boots (3-5mm) are essential. Neoprene gloves (2-3mm) make a huge difference on breezy days. A hood or neoprene cap keeps heat from escaping through your head. Consider a wetsuit with a chest-zip or zip-free entry — back-zip suits tend to flush more cold water.
Below 12°C (54°F) — Winter Sailing
Welcome to the domain of the dedicated. A 6/5mm wetsuit or a semi-dry suit is the minimum. Many winter sailors opt for a full drysuit with thermal undergarments — especially for sessions longer than an hour. Thick boots (5-7mm), lobster-claw or three-finger gloves (4-5mm), and a hood are non-negotiable. Windchill at 25 knots on wet 10°C skin can feel like -5°C. Layer a wind-resistant rash guard under your suit for added insulation. Keep a thermos of hot water in your car to pour into your suit before the session — a trick that buys precious extra minutes of comfort.
Universal Accessories
Regardless of temperature, always wear a harness (waist or seat) once you're at the appropriate skill level. Impact vests provide buoyancy and protect your ribs during falls — recommended for wave and freestyle sailing. Helmets are increasingly common, especially in crowded spots, for wave sailing, or when learning new tricks. And sunscreen is a year-round essential: UV reflects off water even on overcast days.