I live in Saint John,and since our city is right on the Bay of Fundy, we always refer to our city as being air conditioned. On a warm day, our city can be 10-15 degress cooler than about 10 miles in land, but we love it that way. Also we can get fog, because of where the city is situated.
Here is a link to our tourism site for Saint John. We get cruise ships here from June to the end of October.
Also a link to the historical side of Saint John
Enjoy your stay...
We are planning ourself a cruise in April on the Carnival Liberty, cannot wait..