We’ve reached one of our favourite times of year: the very beginning of dive season. Early season diving in the UK has a real character of its own. It’s not just the anticipation of longer and brighter days that gives it charm, but the varied conditions and challenges to tackle. After all, at this time of year, the surface shows signs of spring, but conditions beneath are still very much in winter territory.
Water temperatures lag behind air temperatures by months, which means that you’ll still be entering often 6–10°C conditions and will need to navigate the challenges that may bring. It’s a rewarding experience, but it’s no doubt one that you need to be adequately prepared for with the right cold water diving equipment.
With this in mind, we’ve broken down the essential equipment that will make early UK season diving both possible and enjoyable.
Exposure Protection
Exposure protection is the single most important thing you need to get right in early dive season. That’s not to say that other bits of kit don’t play an important role, but they depend on you being warm enough to think clearly and manage your buoyancy properly. The right type of exposure protection makes this possible and keeps your body insulated against cold water conditions.
There are a number of key elements to get right:
Drysuit
Early in the season is not the time to be dusting off your wetsuit. You’ll need the superior thermal protection offered by a drysuit, which creates a sealed air environment rather than relying on neoprene compression and allows you to manage warmth through insulation layers rather than water temperature.
For early dive season, we’d recommend:
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The Scubapro Everdry 4 (men’s/women’s), which is a versatile drysuit that performs solidly in cold water conditions. It offers a flexible, almost wetsuit-like feel, which is perfect for approaching peak season and dealing with shifting conditions
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The Scubapro Evertec (men’s/women’s), which is a more rugged and specifically cold water-focused drysuit, thanks to exceptionally durable seals and great thermal retention.
Undersuit
Beneath your drysuit, you’ll need another critical exposure protection system component: a trusty undersuit. This is where warmth is generated and retained, so yours makes a huge difference when it comes to cold conditions.
Remember that early season diving is particularly deceptive. You might feel fine on the surface, but once you descend or sit still during breaks, heat loss can happen very quickly. Your undersuit steps in here, preventing that gradual and unnoticed drop in core temperature that could jeopardise your dive.
We’d suggest pairing your drysuit with either:
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The Fourth Element HALO AR, which is one of the most advanced thermal systems available. It uses aerogel-based insulation technology that’s designed to retain heat even when compressed at depth.
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The Scubapro K2 Extreme, which is a highly reliable cold water undersuit that delivers consistent insulation and durability.
Hood, Gloves & Boots
Your extremities are where cold water first starts to break down comfort and performance. Even when your core feels fine inside a properly layered drysuit, it’s often your feet, hands, and head that will dictate how long you can stay under the surface.
Cold hands lose dexterity quickly, making simple and critical tasks like operating a torch difficult if you’re not prepared properly. Likewise, cold feet might not feel urgent at first, but they reduce stability and fin control more than you might expect.
This all naturally means that a hood, gloves, and boots are essential bits of kit for early dive season. You’ll want a minimum of 5mm thickness across all of them, with proper seals on your hood and reinforcement on your gloves and boots for added grip.
Mask & Fins
Once your thermal protection is taken care of, your next diving equipment priority should be efficiency and visibility. Despite sunshine and clarity out of the water, you’ll probably experience variable clarity in it. Your mask and fins then become essential tools for navigating these conditions.
Mask
Spring and early dive season conditions can bring crystal clear visibility on the right day, but your mask is key in making the most of it. Equally, on less visible days, a mask that restricts peripheral vision can make the whole experience even more disorienting.
Our choice is the XDEEP Radical Mask, a bit of kit that’s been designed with all of this in mind. It’s got an exceptionally wide field of vision and has been built with clarity and all-day comfort in mind.
Fins
Meanwhile, your fins will be working even harder than they do in warm water. Drysuits add drag, thicker boots change fit, and cold water conditions require more controlled movements.
With these considerations in mind, we’d suggest the Scubapro Seawing Supernova fins for early dive season. They’re responsive yet efficient, and really good at helping you to conserve energy when you need to.
Cold Water Diving Regulator
Cold water diving introduces a technical risk that doesn’t exist in warmer conditions: regulator freeze. In simple terms, this is when expanding gas cools the internal components of your regulator, allowing ice to form that can cause freeflow or performance issues.
A cold water-rated regulator is therefore an essential in the early UK dive season. We particularly rate the Scubapro MK17 EVO2/S620 Ti, which has essentially been built for these kinds of conditions. The sealed first stage reduces exposure to freezing water, while the balanced design ensures smooth and predictable airflow even when pressure drops or breathing rate increases.
Dive Torch
Even in broad daylight, early season diving often feels more subdued underwater. The sun feels weaker and clarity can be reduced significantly beneath the surface. Your dive torch therefore takes on a role beyond night diving at this time of year, restoring visibility to areas that natural light cannot penetrate. Try the OrcaTorch D710 for strong, focused illumination in a compact form.
Prepare For Dive Season With Aquanauts
What we’ve covered here represents the core cold water diving set-up, but every diver is different. Beyond these early dive season essentials, you’ll also need kit like:
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SMBs, reels, and spools to signal your presence in the water
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Backup torches
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Dive computers suited to cold water
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Post-dive clothing, like a changing robe for warmth
The key point is that no two diving equipment setups are exactly the same, so if you’re not sure exactly what you need as you prepare for dive season, please do reach out.
Every member of the Aquanauts team is a diver. We’ve been there and done it in all conditions, so we are always more than happy to help you fine-tune your setup and find kit that genuinely works for you. Simply pop into store or get in touch today and we’ll get you ready to tackle early dive season and beyond.