I wore my 3-2 wetsuit windsurfing this afternoon. With full sun when I arrived it seemed warm enough. After an hour of fun on the water I starting getting cold & checked the temp. It was 41F with 56F water. When I got home I warmed up next to the fireplace listening to music & discovered this newly-released Beatles song.

https://m.youtube.com/watch?v=Opxhh9Oh3rg