We have made 4 WDW trips in January. This year we went right after New Years - don't recommend that because it was really crowded up until Jan 6. The other three were all after Jan 19th - one right at the end of the month, with us returning on Feb. 1. All the trips within the last two weeks of Jan were great. Not at all crowded. We were lucky and had wonderful weather - mid 70's for highs. I highly recommend it. We'll be going back near the end of January in 2009 too.