What thickness for SUP?

Thinner than equivalent surf-water thickness for the same temperature, because SUP riders spend most time standing above water rather than immersed. Roughly: 75°F+ rash guard or 1mm thermal top; 65 to 75°F 2mm shorty or spring suit; 55 to 65°F 3/2 full suit; below 55°F 4/3 with thermal top underneath. SUP suits are about wind chill and splash exposure more than full immersion.

Are paddle-specific wetsuits different from surf wetsuits?

Some are. Paddle-specific brands (NRS, Kokatat, Stohlquist) make farmer-john wetsuits (sleeveless trunks designed for paddling motion). The sleeveless cut eliminates shoulder restriction during forward strokes. Surf wetsuits with full sleeves work for SUP too, but the shoulder-flex penalty is real on long sessions. For SUP-only use, a farmer-john is the most-paddler-friendly choice. For SUP-and-surf use, a 3/2 or 4/3 surf suit covers both.

What about SUP racing wetsuits?

Triathlon-style suits or specialized SUP race apparel. SUP race events typically use thinner suits (2 to 3mm) optimized for arm flexibility over warmth. Some racers wear triathlon-cut wetsuits (sleeveless or short-sleeve) over their racing apparel. For recreational SUP, this isn't necessary; standard surf or farmer-john is fine.

Do I need a wetsuit if I'm just touring?

Depends on the water and conditions. For warm-water touring (above 70°F) on calm flat water, a rash guard plus board shorts is usually enough. The wetsuit need ramps up with wind chill, splash exposure, and risk of falling in. For coastal touring with potential 60°F water, a 2mm spring suit covers the unexpected fall. For multi-day touring or whitewater paddling, a wetsuit becomes more important; the dunking risk is higher.

Best Wetsuits for SUP and Paddleboarding

Stand-up paddleboarding sits in an unusual thermal zone. SUP riders spend most of their session standing above the water rather than immersed in it, so the best wetsuits for SUP and paddleboarding trade slightly less thermal need for slightly more wind exposure than equivalent surf use. This guide covers the right picks across the typical SUP temperature range, including paddle-specific farmer-john options and the standard surf wetsuits that double as SUP suits.

For broader cold-water context, see our whitewater kayak wetsuits guide and wetsuit thickness guide.

Key Takeaways

• SUP wetsuit thickness is 1mm thinner than equivalent surf-water thickness because of less immersion.
• Farmer-john wetsuits (sleeveless) are paddle-specific and most flexible for forward stroke.
• Surf wetsuits work for SUP at the cost of slight shoulder restriction.
• Wind chill and splash matter more than full immersion for SUP.
• For multi-day touring or whitewater, lean toward thicker suits.

Quick picks

Category	Pick	Price
Best long-sleeve UPF rash guard	O’Neill Basic Skins UPF 50 LS	$25 to $40
Best 2mm shorty for warm water	Hyperflex Access 2mm Shorty	$80 to $120
Best paddle-specific farmer-john	NRS 3.0 Farmer John	$130 to $180
Best mid-range farmer-john	Stohlquist Shorty 3/2	$100 to $150
Best surf-style 3/2 for SUP	Body Glove Pro 3 3/2	$90 to $140
Best premium for cool-water SUP	O’Neill Hyperfreak 4/3	$349 to $429

SUP thermal needs are different

A surfer in 60°F water spends most session-time immersed: paddling out on belly, sitting on board, duck-diving, riding. Heat loss is roughly 25 times faster in water than air at the same temperature, so the surfer’s wetsuit is fighting full water immersion.

A SUP rider in the same 60°F water spends most session-time standing on the board, with feet wet but body in 70 to 90°F air. Heat loss is dominated by air convection and splash exposure rather than full immersion. The same person wearing the same suit feels warmer on a SUP than on a surfboard.

The implication: SUP-specific thickness can run one step thinner than surf-specific thickness for the same water. A surfer who needs a 4/3 might be comfortable on a SUP in a 3/2.

The exception: SUP surfing or SUP whitewater, where dunking is frequent and immersion time matches surf or kayak use. For these uses, surf-thickness rules apply.

Best long-sleeve UPF rash guard: O’Neill Basic Skins LS

For warm-water SUP (above 75°F) where the priority is sun protection over warmth, a long-sleeve UPF 50 rash guard plus board shorts is the daily kit.

Best 2mm shorty: Hyperflex Access 2mm

For 65 to 75°F water where you want some thermal coverage but not a full suit, a 2mm shorty is the right pick.

Best paddle-specific farmer-john: NRS 3.0 Farmer John

NRS is the standard whitewater and paddle-sports brand. The 3.0 Farmer John is sleeveless full-leg construction designed for paddling motion. Pair with a paddle jacket on top for upper-body insulation.

Best mid-range farmer-john: Stohlquist Shorty 3/2

For cool-water SUP where a 3/2 covers most needs but you want full sleeves rather than sleeveless, the Stohlquist Shorty 3/2 (despite the name, it’s a full-sleeve, short-leg construction) is a solid mid-range pick.

Best surf-style 3/2 for SUP: Body Glove Pro 3 3/2

For SUP riders who also surf, the same 3/2 covers both. Body Glove Pro 3 is the budget pick that holds up for moderate use.

Best premium for cool-water SUP: O’Neill Hyperfreak 4/3

For cool-water SUP (50 to 58°F, NorCal winter, PNW shoulder season) where you want premium-tier flexibility plus warmth, the Hyperfreak 4/3 is the right pick. Same suit reviewed for surf use in our O’Neill Hyperfreak 4/3 review.

Layering for SUP

Two layering options for SUP riders:

Option 1: Wetsuit alone. Standard surf or paddle wetsuit. Works for most warm-to-moderate conditions. Simplest kit.

Option 2: Farmer-john plus paddle jacket. Sleeveless wetsuit on bottom, paddle jacket (waterproof shell) on top. The split system lets you vent the upper body during paddle exertion and ride out cold weather without being trapped in a sealed wetsuit. Standard for cool-water SUP riders.

For longer or colder trips, also consider:

A thin thermal layer underneath
Paddle gloves for hand protection
A spray skirt for windy conditions

SUP-specific gear considerations

Falling-in risk

SUP boards are stable platforms but you do fall in occasionally. The wetsuit needs to handle your unexpected immersion, which means keeping you safe for at least a 5 to 10 minute swim back to the board if needed. A too-thin suit becomes a real problem after a fall in 55°F water.

Wind exposure

Standing on a board in 15 mph wind feels colder than the same wind on a surfer floating in the water. Plan thickness for windy conditions, not calm-water conditions.

Sun exposure

Standing on a board with no shade puts you in maximum sun-exposed position. UPF 50 long-sleeve rash guards (worn alone in warm water, or as a layer in colder) are essential.

Comparison with other paddle sports

Sport	Cold-Water Wetsuit	Why
SUP touring (warm)	Rash guard + trunks	Above-water session, sun-exposed
SUP touring (cool)	2mm spring suit or 3/2	Wind chill, possible fall
SUP surfing	Surf-style 3/2 or 4/3	Frequent immersion
Whitewater kayak	3mm farmer-john + paddle jacket	Frequent dunking, long swims if pinned
Sea kayaking	3mm farmer-john or drysuit	Long durations, exposed conditions
Surfski racing	Triathlon-style 2-3mm	Race performance, brief immersion

For paddle-sport-specific gear, see whitewater kayak wetsuits.

Putting it together

For most SUP riders, the kit looks like:

Warm-water (75°F+): rash guard plus board shorts
Warm-temperate (65 to 75°F): 2mm shorty or rash guard
Cool-temperate (55 to 65°F): 3/2 surf suit or NRS farmer-john + paddle jacket
Cold (below 55°F): 4/3 surf suit or paddle-specific equivalent

For broader gear context: whitewater kayak wetsuits, summer spring suit picks, 3/2 vs 4/3 comparison, O’Neill brand guide, rash guard buying guide, wetsuit thickness guide, Pacific Northwest pillar for cool-water context. For thickness selection, the Wetsuit Finder tool takes 60 seconds.

How we tested

The O’Neill Basic Skins, Hyperflex Access shorty, Body Glove Pro 3, and O’Neill Hyperfreak are owned and worn by team members. SUP-specific testing has been across PNW lakes and bays. The NRS Farmer John and Stohlquist Shorty are picks based on construction-spec review and paddle-community reports rather than long-term firsthand SUP wear by our team. We have flagged that. We bought what we own at retail.

Sources cited

NRS. NRS paddle-sports gear documentation. Standard whitewater and paddle-industry construction reference.
ASI (American SUP Association). SUP industry resources. Industry organization with safety and gear guidelines.
Surfer Today. SUP coverage. Industry-blog overview of SUP gear and conditions.