Omatako's post has me doing some research. Here's a chart showing the currents that he mentions.
Originally Posted by Omatako
Cape of Storms got its name in the days of Bartholomew Dias when there were no charts let alone weather forecasting. The weather around the cape is nowhere near as bad as its reputation would suggest.
The more scary area is the Mozambique Channel and the Agulhas Stream but to avoid pirates one would almost obviate this formidable current. I'm not sure where your coming from but if you're stopping at Cocos or even Chagos, the next destination should be Mauritius followed by Durban or Richards Bay in South Africa. From there the weather windows are reasonably predictable even though the distance between safe havens is quite large. Hundreds of local boats do this voyage and if you harvest local knowledge the sailing can be very exhilarating. I sailed that area for the dominant part of my sailing life and never had an incident that was unmanageable.
It beats the heck out of the gauntlet you're going to run up north.
Fun fact #2484: In my avatar, that's DavidPM at the helm of my boat.
Bland, non-political statement goes here.