Stoo
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Lot's of people dive there in wetsuits, but you really need a 7mm John, and a 7m jacket, plus a good hood, gloves, boots. By August, typically the thermocline pushes down to about 70' and the temp above that is often close to 50°F. Considering the relatively short time most divers spend at depth, that's comfy, especially when it's warm and sunny topside. I have a young friend who has been diving with me for the past three years and she has been in a poor-fitting 14mm and has survived deep dives to about 145', but she was frosted to the core. (And this girl modeled in a bathing suit in October... She's no whimp.)
Having said all this, in big ice years (like this) it can be cold well into the season. If the wind is blowing in the right direction, it is possibly to run into 38° water in 45 - 50' in August, but that's unusual.
If you are diving wet, bring some warm over-clothing to wear between dives, and bring a warm drink, even in August. Don't let the lack of a drysuit stop you from diving here... just come later in the season... August, September.
DISCLAIMER: I haven't been diving in Tobermory in a wetsuit for about 25 years, but then I'm a wuss. I also didn't swim once there last year (it was especially cold) and only a few times, at best, in any given summer.
PS: Speaking of the Grotto, this is a favorite pic I took there that is in DIVER Magazine this month. Note the wetsuit! ;-)
Having said all this, in big ice years (like this) it can be cold well into the season. If the wind is blowing in the right direction, it is possibly to run into 38° water in 45 - 50' in August, but that's unusual.
If you are diving wet, bring some warm over-clothing to wear between dives, and bring a warm drink, even in August. Don't let the lack of a drysuit stop you from diving here... just come later in the season... August, September.
DISCLAIMER: I haven't been diving in Tobermory in a wetsuit for about 25 years, but then I'm a wuss. I also didn't swim once there last year (it was especially cold) and only a few times, at best, in any given summer.
PS: Speaking of the Grotto, this is a favorite pic I took there that is in DIVER Magazine this month. Note the wetsuit! ;-)