An umbrella frame structured for use in a strong wind conditions such as those conditions frequently encountered on a boat traveling at relatively high speeds. An umbrella frame assembly includes a reinforcing assembly connected thereto in a supportive, operative orientation thereby providing a stable support for an umbrella canopy which can remain open even during travel of the boat. The frame assembly can be modified to support canopies of varying shapes and sizes and the frame assembly can be easily removed, for storage purposes, from a supporting base which may be mounted on or connected to a boat.