I have never been there in the colder months, but it being chilly would be amazing for me as I am always so hot down there at night. I just don't know if Elyse would like it that cool. Here are some of the weather descriptions on Dec and Jan: Cancun Weather in December Cancun Weather in January I always have a hard time leaving the pool until super late and by that point I am completely stupid. so maybe it getting dark early and cooling down would facilitate me behaving better. I was actually considering it for this year for a minute once a friend suggested it, but I looks like the prices are very high.
We have been to Cancun for New Year's and it wasn't cold. I was still wearing skimpy dresses at night and it was in the 80's during the day. Maybe 60's at night if a storm is moving through then it might be chilly with the wind. I found it to be cooler in March last year when we went but it all depends on the weather. It's still beautiful and pleasant!
Temperatures do drop in the evenings January. Lovely during the day but jumpers over sexy undies at night
We are going for the 3rd time the week of Thanksgiving and it has been always been plenty warm at night to wear as little as you want.