Compare the plug shapes, voltage and frequency in São Tomé and Príncipe and New Zealand, 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 New Zealand. São Tomé and Príncipe uses Type C/Type F plugs, and New Zealand uses Type I, so the pin shapes will not fit any wall socket.
São Tomé and Príncipe (home)
New Zealand (destination)
Electrical specifications in New Zealand
Voltage
Frequency
More about plugs in New Zealand
In New Zealand, the standard power plug is Type I. The country runs on 230 volts at 50 Hz. That means every wall socket in New Zealand is the same shape — Type I, and your plug needs to physically match the socket to fit.
Full New Zealand plug guide