Dream About Wading In Dark Lake

I had a dream that I was wading in a lake. The water was dark, and I couldn’t see anything under the surface, and it was very warm water. Someone asked me to go jump into the water so we both ran down a wooden dock, it was sturdy hardwood. Then we both jumped in. Our splashes were small. We both swam smoothly back to the other side of the lake. I made a comment on how warm the water was, implying I didn’t like it. Then a rainstorm came and it started raining. It cooled down the water in the lake.