You Do Need power plug adapter while traveling from South Africa to Canary Islands.

Here is Why You Need An Adapter

The outlet and plug type used in Canary Islands are C, E and F and in South Africa are C, M and N. This is how they look like.

South Africa

In South Africa, outlets of type C, M and N are in use.

Type C

Type M

Type N

Canary Islands

In Canary Islands, outlets of type C, E and F are in use.

Type C

Type E

Type F