There definitely are! My wife in I lived in one for three months after we got married before we moved to Portland. I was really glad we were able to find one with furniture. It made the transition a lot easier! http://www.bcohousing.com/
With it being off-season for beach rentals, I would suggest contacting any of the beach rental companies and you will likely be able to find a good short term furnished rental this way. I recommend this to many clients that need a place for a few months while looking for a home. Let me know if I can be of further help. Have a great day!