Your Complete Guide to Prepping for the UK Dive Season

March is when the UK dive season properly starts waking up. The clocks have not changed yet, the water is still cold from winter, but the first proper stretch of dive-able weekends is close enough that it is worth getting properly organised now rather than scrambling the week before your first quarry or coastal dive. Whether you dived through winter or hung your kit up in November, here is a real, practical checklist for getting yourself and your gear ready for the season ahead.

Servicing Your Regulator and BCD Should Happen Now, Not in May

If your regulator has not been serviced in the last twelve months, or you cannot actually remember when it was last serviced, book it in now. Servicing intervals matter because internal components, particularly the diaphragms, o-rings, and high-pressure seat, degrade over time regardless of how much you have actually used the regulator, and a first-stage or second-stage failure is not something you want to discover at depth in cold water. Service centres get genuinely busy from March onward as everyone has the same idea at once, so booking early means you get your kit back in good time rather than waiting three weeks into peak season.

Your BCD deserves the same attention. Check the inflator mechanism works smoothly, inspect the dump valves for grit or salt build-up, and if you store your BCD deflated over winter, make sure it holds air overnight before you trust it in the water. A slow leak that was barely noticeable in October can become a real problem when you are relying on it to hold a heavier winter weight configuration.

Exposure Protection: Wetsuit, Drysuit, and the Bits In Between

UK water temperature in March and April typically sits somewhere around six to nine degrees Celsius, colder than most divers expect if their last dive was on a warm-water holiday. If you dive dry, check your seals for perishing, particularly around the neck and wrists where latex seals crack and lose elasticity over time, and inspect the zip for any stiffness or corrosion that suggests it needs waxing or servicing. A drysuit that has sat unused all winter should get a proper leak check in a pool or shallow water before you commit to a deeper open water dive in it.

If you dive wet, early season is genuinely not the time to be in a 3mm shortie. A good semi-dry or full 7mm wetsuit with a hood is the realistic minimum for UK spring conditions, and if you are coming back to diving after a break, do not underestimate how quickly cold water saps concentration and judgement even before you consciously feel cold. Gloves and a proper hood are not optional extras in March, they are the difference between an enjoyable dive and a genuinely miserable one that puts you off diving again until summer.

Weight Checks Matter More Than People Think

Your buoyancy characteristics change with every piece of exposure protection you add, and a lot of divers carry over their summer weighting into spring without checking it against a thicker suit, a hood, and possibly extra thermal layers underneath a drysuit. Do a proper weight check at the start of the season, floating at eye level with an empty BCD and a near-empty tank, rather than assuming last year's numbers still apply. Being noticeably over or under-weighted early in the season makes buoyancy control harder exactly when cold hands and thicker gloves are already working against your fine motor control.

Fitness and Physical Readiness After a Winter Break

If you have not been in the water for several months, treat your first dive or two of the season as a genuine skills refresher rather than diving straight into a challenging site. Basic things like mask clearing, regulator recovery, and controlled buoyancy checks can feel surprisingly rusty after a break, and cold water adds an extra layer of task loading on top of that rust. A shallow, low-pressure dive at a familiar site, or a session in the pool if it has been a particularly long gap, is a sensible way to knock the rust off before committing to anything more demanding.

It is also worth being honest about general fitness. Winter tends to mean less activity for a lot of people, and diving, particularly shore diving with kit on over uneven ground, or a drysuit dive with a lot of exertion managing buoyancy, is more physically demanding than it looks from the surface. If you have had a genuinely inactive winter, a bit of general cardiovascular fitness work in the weeks before your first dive will make that first outing considerably more enjoyable.

A Proper Pre-Season Kit Checklist

Beyond regulator servicing and exposure protection, run through the smaller items too. Check your mask strap and skirt for perishing, replace your dive computer battery if it is due or get it checked, inspect your fin straps for the kind of brittleness that leads to a snapped strap mid-dive, and check your cylinder's test date, since a hydro test that expired over winter needs sorting before any dive centre will fill it for you. A torch is worth carrying even in daytime UK diving given how quickly visibility and light can drop off, so check batteries and seals on that too.

It is also a good moment to review your logbook from last season and think honestly about what you want to get better at. Maybe your trim was never quite right, maybe you want to get more comfortable with a drysuit, maybe you have been meaning to try a specialty course. Early season, before your diving calendar fills up, is the ideal window to book training while your instructor's schedule is less pressured than peak summer.

Training Refreshers Worth Considering

If it has been a genuinely long layoff, or you are just coming back to diving after certification some years ago, a scuba review or refresher session with an instructor is a sensible, low-cost way to rebuild confidence in controlled conditions before your first proper open water dive of the year. It is also a good time of year to look at a Dry Suit specialty if you have been wet diving and are considering the switch, since you will get the benefit of it for the whole season ahead rather than starting halfway through summer.

Whatever your plans for the season, take a look at our full course listings to see what might fit your goals, whether that is a first refresher, a new specialty, or working toward your next certification level.

Frequently Asked Questions

How cold is UK diving really in early spring? Expect six to nine degrees Celsius in most UK inland and coastal sites through March and April, warming gradually from May onward.

Do I need a drysuit for UK diving? Not necessarily, but a thick wetsuit with hood and gloves is the realistic minimum for comfortable early-season diving, and many UK divers eventually move to dry for year-round comfort.

How long does a regulator service take? Typically a few days to a couple of weeks depending on demand, which is exactly why booking early in the season avoids a longer wait later.

Ready to get your season started properly? Book a kit check, a refresher session, or explore our full course listings, or get in touch with the team at Bellman Court, Great Knollys Street, Reading, RG1 7HN, or call +44 (0) 118 9761 729.