Whatever activities you hope to accomplish in Cape Town, head up Table Mountain as soon as the wind isn't blowing. Cape Town wind is notorious, and the mountain can be shut for days on end when there are gales. Summer (October-March) is the windiest time of the year, and during December winds can reach 60 km (37 mi) an hour. If you're planning to visit Robben Island during peak season, it's also wise to book well in advance. One of the best months to visit is April, when the heat and wind have abated and the Cape is bathed in warm autumnal hues. The rains in winter can put off visitors, but this time of the year holds its own charm: the countryside is a brilliant green, and come early spring (September) you have the whales and wildflowers to look forward to.