Cape Town has plenty of outdoor spots where you can just sit down and enjoy a simple picnic assembled from the shelves of Pick 'n Pay, Spar, and Woolworths. This couple found a spot near the ocean at Sea Point, but other good picnic spots include the top of Signal Hill, the beach at Woodbridge Island, Camps Bay or Clifton, Rhodes Memorial, Kirstenbosch Botanical Gardens, Cape Town Company Gardens, and many more.
The evenings have started cooling down a little and I seem to have developed a cold, so I suspect that unless the weather warms up again soon, the only picnicking I'll be doing is during the day, not in the evening. I'm finding it hard to believe that summer has started to show signs of fading already...