Is Surfing Bad for Your Knees? Joint-Friendly Tips for Beginners

If knee concerns have been quietly holding you back from booking a lesson, here’s the reassuring, honest answer: surfing is a relatively safe sport for your knees, and the injuries that do happen usually trace back to a small number of specific, avoidable causes — not the sport itself. Here’s what’s actually going on, and how to stack the odds in your favor.

What the Data Actually Shows

Compared to other athletic activities, surfing carries a genuinely modest injury rate overall, and knee injuries specifically are less common than upper-body injuries like shoulder strain or dislocation. When knee injuries do occur — and they can, ranging from mild strain up to more serious ACL or meniscus tears — they tend to show up more often in advanced surfers, linked to their surf stance under repeated compression and the demands of advanced maneuvers, rather than in beginners easing into gentle whitewater. That’s a genuinely useful piece of context if you’re just starting out: the highest-risk pattern here belongs to a stage of surfing you’re not even at yet.

Why the Water Itself Is on Your Side

A large part of what makes surfing gentler on joints than land-based sports is simply physics. Running, jumping, and most gym cardio involve repeated ground-reaction force — every step or landing sends impact straight through your ankles, knees, and hips against a hard surface. Surfing removes most of that: the water supports your body weight throughout paddling and riding, so you’re generating real effort without that repetitive pounding. It’s a meaningfully different loading pattern than almost any land sport you could compare it to.

Where Knee Strain Actually Comes From in Surfing

When knee issues do show up, they generally come from one of three places:

• 1. Stiff, hard landings on the pop-up. Landing biomechanics research is fairly consistent on this point: a soft landing with good knee flexion spreads impact force across the whole kinetic chain, while a stiffer landing with less knee bend concentrates far more force directly through the knee joint. The difference between a good pop-up and a rough one isn’t just style — it’s a real difference in how much load your knee actually absorbs.
• 2. Hip and trunk mobility deficits. A lot of persistent, nagging knee discomfort in surfers — sometimes called “surfer’s knee,” felt along the inner side of the joint — doesn’t actually originate in the knee itself. It’s frequently a downstream symptom of limited hip and trunk mobility or strength, with the knee compensating for movement that should be happening higher up the chain. Tight hips force the knee to twist or absorb load it wasn’t designed to manage alone.
• 3. Rotational loading during turns and duck dives. This is more of an intermediate-to-advanced consideration, but worth knowing about as you progress: as you start generating real speed and carving through turns, the twisting forces through your lower body increase substantially compared to straightforward whitewater riding.

The Landing Technique That Protects Your Knees

This is genuinely the single most useful thing to get right early on. The correct pop-up finishes in a specific, deliberate position: bent knees, level hips, an upright torso, landing softly rather than stomping down stiff-legged. That bent-knee, soft landing isn’t just about looking balanced — it’s doing real mechanical work, absorbing force gradually through your leg muscles rather than letting it slam directly into the joint. Practicing this on the sand, slowly and deliberately, before you’re doing it under the pressure of an actual wave, is worth every rep.

Warm-Up as Real Knee Insurance

This connects directly to why a proper pre-surf warm-up matters beyond just “feeling loose.” Movements like a low lunge with torso rotation, or a deep squat that presses the knees outward with your elbows, aren’t arbitrary stretches — they’re specifically mobilizing the hip flexors, adductors, and hip capsules that, when tight, are exactly what forces your knee to compensate. Treat your warm-up as targeted knee protection, not just a formality before paddling out.

Practical Tips for Protecting Your Knees as a Beginner

• Prioritize a soft, bent-knee landing over speed. A slower, well-formed pop-up beats a rushed one every time, especially early on while the movement is still new.
• Build hip and glute mobility off the water too. The same warm-up movements worth doing before a session are worth revisiting on rest days as general mobility work.
• Don’t skip the warm-up, ever. It’s doing more functional work for your knees specifically than it might seem.
• Start on a soft-top board in gentle whitewater. Less consequence to any individual fall means less chance of an awkward, twisting landing while you’re still building consistency.
• Tell your coach about any existing knee history. A good instructor can adjust pacing, wave selection, and technique cues around a knee that needs a bit of extra consideration.

When to See a Professional

General soreness after a new physical activity is normal and expected. Persistent pain, swelling, a feeling of instability, or a distinct “pop” sensation at the moment of an injury are different — those are signals worth taking to a doctor or physiotherapist rather than pushing through. This guide is about reducing risk and surfing smart, not a substitute for proper medical evaluation if something genuinely doesn’t feel right.

The Bottom Line

Surfing isn’t a sport that’s inherently hard on your knees — if anything, the water’s buoyancy works in your favor compared to almost any land-based alternative. The real risk factors are specific and manageable: landing technique, hip and trunk mobility, and paying attention to your body as you progress. Get the fundamentals right early, and your knees have every reason to enjoy this as much as the rest of you will.

Have a knee concern you’d like to mention before your lesson? Tell us when you book — we’ll build your session around it.