One of the biggest perks about booking a Miami vacation is the threat of inclement weather is seldom an issue for travelers, no matter the time of year. You can pretty much guarantee that the summers will be excruciatingly muggy, while the winters will be surprisingly warm. Average temperatures range between 68 degrees Fahrenheit in January, to well into the 80s by the time July and August come around. And don’t worry about a lack of sunshine putting a damper on your beach trip. The Miami sunshine is present for at least 7 hours a day, each day of the year, depending on the threat of rain or other tropical precipitation.