Don’t require power plug adapter while traveling from Portugal to São Tomé and Príncipe.

Here's why you do not need an adapter

The outlet and plug type used in São Tomé and Príncipe are C and F and in Portugal are C and F and they are compatible with each other.

Portugal

In Portugal, outlets of type C and F are in use.

Type C

Type F

São Tomé and Príncipe

In São Tomé and Príncipe, outlets of type C and F are in use.

Type C

Type F