During my trip to Campeche in December, I tried be out during the blue hour to get a few photos of the local sights. The blue hour is the period of twilight early in the dawn each morning and late in the dusk each evening when the sun is below the horizon and the remaining light takes on a predominantly blue hue. I find this to be a great time to take photos — easier at night (you’re still awake) and harder in the morning (you need to get up before sunrise).
The churches don’t have their lights on early in the morning, so the best views of those are after sunset. Streets are deserted before dawn. Here’s a variety of photos from the blue hour in Campeche.