I'm not sure exactly. My bay and the ocean freeze over in the winter months. It's been open for a long time now but we haven't had a hot spring. It's probably around the 10-11C mark.

In a couple of weeks, I expect my bay to warm up to 17 to 18C as it has somewhat restricted tidal flow. The ocean will reach that level by close to the end of June hopefully. I think it tops out there for the ocean but my Bay gets so warm it's not even refreshing after a while.


With great power comes Awesome irresponsibility.