Compare the plug shapes, voltage and frequency in Poland and Kiribati, and find out which adapter you need before you travel.
Adapter required
Yes — coming from Poland, you will need a travel adapter for Kiribati. Poland uses Type C/Type E plugs, and Kiribati uses Type I, so the pin shapes will not fit any wall socket.
Poland (home)
Kiribati (destination)
Electrical specifications in Kiribati
Voltage
Frequency
More about plugs in Kiribati
In Kiribati, the standard power plug is Type I. The country runs on 240 volts at 50 Hz. That means every wall socket in Kiribati is the same shape — Type I, and your plug needs to physically match the socket to fit.
Full Kiribati plug guide