Because of its Northeast Florida location, Jacksonville has a subtropical climate, unlike the near-tropical climate of South Florida and the Keys, and a subtle change of seasons not found in more southerly Florida cities. Year-round sunshine and blue skies offer mild weather, making a visit to Jacksonville pleasant most of the year.

If you want some serious sun, visit sometime between Mid-April and October, as these months feature temperatures that are above 80, peaking at an average of 91 during the months of July and August.  The highest temperature ever recorded in Jacksonville (105 degrees) happened in the month of July.  Unfortunately, the humidity can be high between late May and early October, and the sun's rays are most intense in June, meaning the risk of sunburn is at its highest.

Unfortunately, the hot, humid summer weather also brings an increased chance of thunderstorms.  Still, these daily storms shouldn’t impede your tennis game too much as they are fairly predictable and pass quickly, rarely lasting for more than half an hour.  Hurricane season lasts June to November, but Jacksonville, because of its location, is usually missed by most storms.  Only one named storm has directly impacted Jacksonville in the last 100 years - Category 2 Dora in 1964.

The most pleasant times of year to visit, combining low humidity, ample sunshine and mild temperatures (70s and 80s) are March, April, October and November.  The weather becomes less dependably pleasant in December, as many fair, mild sunny days can be interspersed with cloudy, blustery chilly days (40s - 50s) which accompany cold fronts sweeping in from the northwest.  Surf temperatures which linger in the low 80s to upper 70s June until  November, may dip below 60 in December and remain that way through January and February, and remain below 70 until late March or early April. 

Temperatures below freezing are rare, but may occur on up to 7 to 10 days in any given year, almost never lasting for more than a few hours at night, usually between December 15th and February 15th.  Snow is almost unheard of, but occurred in 1977 and 1989, though only trace amounts were recorded.  Very cold weather (days with a high not reaching 55) are almost always accompanied by cloudless blue skies and low humidity.

 Spring comes early to Northeast Florida, with the trees budding and early spring flowers coming out in late January, and the season culminating with the heavy sweet scent of orange blossoms in late March.