Miami Weather In January 2025 Average Temperature. What’s the weather like in miami? In the morning the temperature drops to 68°f.
January stands out as miami’s coldest month, with temperatures ranging between an average high of 73°f (22.8°c) and a low of 65.1°f (18.4°c). In miami during january average daily high temperatures are level around 76°f and the fraction of time spent overcast or mostly cloudy decreases from 35% to 31%.