The high humidity in coastal Florida is primarily due to its proximity to the Gulf Stream.

Coastal Florida experiences high humidity due to its proximity to the Gulf Stream, a warm ocean current that flows along the eastern U.S. The Gulf Stream brings warm, moist air, which increases the atmospheric moisture content, leading to high humidity levels in Florida. This is especially noticeable in the summer months when the combination of warm temperatures and humidity can make the weather feel even hotter. The coastal location of Florida, coupled with the influence of the Gulf Stream, contributes to its characteristic humid climate, which plays a significant role in the state’s weather patterns and overall feel.