It was wrong time when we visited Da Nang. It was early December 2011. It was wet, the sea was rough and the temperature was relatively cold.
Nevertheless we managed to visit gorgeous Marble Mountain and Cham Museum.
Most of the time, we were relaxing at the hotel and were walking along the beach.
Even though Da Nang is located in the central of Vietnam, do check the weather condition before you go. If you are traveling from Malaysia, there is flight by Airasia from LCCT (as of this post).