As an East Coast transplant, the term "San Diego winter" seems like an oxymoron. Temperatures rarely drop below 60 degrees and the sun shines even on these cooler days. It's during this winter, though, that you're forced to find something other than sun tanning or swimming to occupy your time. Whale watching tours seem like the perfect way to stay outside December through March, and offers a chance to get a glimpse of these large wonders as they slowly migrate south from the Arctic sea to Baja, Mexico for the winter.