Steam in my exhaust

For the past few weeks I have noticed steam in my exhaust so I pulled the raw water strainer apart and this is what I found.

Lots of weed and mud! Well I cleared it all up but I still have steam coming out of my exhaust. I looked up my "Complete Sailboat Maintenance Manual" by Don Casey and it says steam can be caused by insufficient raw water flow or "Water vapor from condensing exhaust gases is normal in colder climates." I am not so sure about whether or not 60 degree autumn weather is considered a colder climate or not but for now I am hoping for the best.
I did another video of many of the other boats doing the Salty Dawg Rally with me.