The best time to visit depends on your motivations. The spring and summer months are best if you want to take a pleasant stroll down the breakwater promenade. If, however, you want to watch huge waves splash against the walls during a storm, autumn and winter are a better bet (though they can happen at any time of year). As for the time of day, if you want to park close to the breakwater entrance, you'll need to get there early as parking is limited. Alternatively, you can wait until later in the day, when most people have gone home.