According to my guidebook, spring is the best time to visit Vietnam because it is not cold and not hot. Indeed, it is about 26C most days and the Vietnamese repeat often that this is good weather.
What it fails to mention is that Vietnam is blanketed by a permanent fog and cloud cover is 100% all the time, every single day. I asked around and everyone says this is normal for this time of the year and I am getting different answers or blank looks when I ask when it gets clearer. Everything looks depressing and dull now, even the famous Halong Bay is barely visible.
When does Vietnam experience the most clear days? Of course, I know weather varies and I do not expect a season with absolutely no clouds but which months would have the least clouds?