Compare the plug shapes, voltage and frequency in Brazil and Samoa, and find out which adapter you need before you travel.
Adapter required
Yes — coming from Brazil, you will need a travel adapter for Samoa. Brazil uses Type C/Type N plugs, and Samoa uses Type I, so the pin shapes will not fit any wall socket. The mains frequency is also different (60 Hz vs 50 Hz). This rarely matters for electronics but can affect motor-driven devices like clocks and shavers.
Frequency differs (60 Hz vs 50 Hz). Rarely an issue for most electronics, but can affect motor-driven devices like clocks and shavers.
Brazil (home)
Samoa (destination)
Electrical specifications in Samoa
Voltage
Frequency
More about plugs in Samoa
In Samoa, the standard power plug is Type I. The country runs on 230 volts at 50 Hz. That means every wall socket in Samoa is the same shape — Type I, and your plug needs to physically match the socket to fit.
Full Samoa plug guide