Been number of times all times of the year. You can never be sure but that is what Belize is all about. Arived New Years Eve (just past)to low 80's sunny wonderful, smooth seas, clear water light breeze from the S/East off the water. Two days later, what locals refered to as a cold front moved in heavy seas, ruff water, cold wind from the N/West temps in the 50-60's with the good thing water was much warmer. Belize Weather forcast rain for every day. Never did rain. So go to Belize and enjoy no matter what is the weather. Should be warmer by the time you go. We went Feb 01 and was hot all the time felt like summer in LA (Lower Alabama).