Situated at the very northeast corner of Florida, Jacksonville has weather and seasons more like Savannah than Miami. Which is to say that, while the weather is mild year-round compared with northern climes, don’t expect beach-lounging conditions during the winter. Also, it’s not primarily a tourist town, so high and low seasons refer mostly to the surrounding beach areas.
That said, the most popular time to visit Jacksonville is from spring to mid-summer—May to August—when the sun drives local and regional crowds to the beaches. For visitors planning outdoorsy activities like kayaking on Amelia Island, spring has milder temperatures, while July and August can get quite hot. The summer months are also the rainiest part of year.
The least popular time to visit is the winter, from November to February, when the weather is cool and blustery. Temperatures can occasionally dip close to freezing from December to February, but cold fronts don’t last long and inevitably give way to mild days in the mid-60s.
For a happy medium, consider a trip during the shoulder seasons around March and April or September and November. The spring shoulder season can have cool weather and the late summer can still suffer lingering heat, but both seasons see nice weather and beach crowds are greatly reduced.