Well we don't get the temperatures in the UK that you have over there but I had a black Zodiac Serie many years ago. If the boat was for example, on the beach or at least on dry land, on hot days the tubes were too hot to touch for long so I used splash water on them before we sat on them. If the boat was on the water for a while, they were not too bad, still quite hot but OK.
My current sib is dark blue, so we will see what hot days next year do to surface temperature.
Phil
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