Compare the plug shapes, voltage and frequency in São Tomé and Príncipe and Malawi, and find out which adapter you need before you travel.
Adapter required
Yes — coming from São Tomé and Príncipe, you will need a travel adapter for Malawi. São Tomé and Príncipe uses Type C/Type F plugs, and Malawi uses Type G, so the pin shapes will not fit any wall socket.
São Tomé and Príncipe (home)
Malawi (destination)
Electrical specifications in Malawi
Voltage
Frequency
More about plugs in Malawi
In Malawi, the standard power plug is Type G. The country runs on 230 volts at 50 Hz. That means every wall socket in Malawi is the same shape — Type G, and your plug needs to physically match the socket to fit.
Full Malawi plug guide