We were there this past November. It really can be all weather. You need to be prepared for pants, long sleeves and a light jacket at night and anything up to bathing suits during the day.
Just moved to San Diego - more DLR trips here we come!!
DLR 2004, 2005, 2006, 2008, 2009
Disneyland Paris 2003
WDW 1997, 1999, 2001, 2001, 2005, 2006, 2011 (DH's first trip)