Vole at stargaven

Today Dad, Connor and I went to the stargaven boardwalk. It was really high tide when we got there. Connor and I went head of dad. Soon after we crossed the foot bridge dad called us beck to the foot bridge. It turned out there was a vole swimming in the water. Once the vole got to a non flooded patch of land around a tree, it went into a hole. We waited for it for a little bit, then it came back most of the way out of a different hole and stayed out long enough for us to get some photos of it and I got some videos of it too. Then it when back into the hold for a minute of two, then it came back out of the hole and I got another video and Connor and dad got some more photos of it. After a few more minutes it went back into the hole, and I continued walking while Connor and dad stayed behind to wait and see if the vole came out again. It did after a while.
now it’s time for those questions. Why was it raining on and off while we were there?
Why was it so high of a tide?
Why did the vole swim to that patch of ground?