Kayaking and Otter spotting around mid December?

Hello! Otter is my partner and my favorite animal and I would like to plan an anniversary trip to Monterey Bay to kayak and spot otters if the timing is not too off. I am thinking on the weekend of 12/21. I checked multiple posts that says Otters are there all year round but still wanted to double make sure if it is good idea to go on the weekend of 12/21 or if I should plan it in April/ May for better overall experience. I also checked past weather, it looks like it's a bit chilly with 60f during the day in December. I was wondering if kayaking is pleasant at that time?

Aside from the question for timing, I also welcome any suggestion of other activities. We are outdoorsy and likes nature a lot. Otter seeing is going to be the main theme for the trip, but I will try to fill the trip with other activities.

Thank you a lot!