Most banks are open Monday to Friday, but there are a few open on Saturdays and Sundays, such as:

Bank PEKAO S.A.
Rynek Główny 31
phone +48 12 424 38 09
Mon-Fri 8am-6pm, Sat 9am-2pm

ul. Podgórska 34
phone +48 12 428 69 40
Mon-Fri 10am-8pm, Sat 10am-2pm

BGŻ
ul. Pawia 5 (Galeria Krakowska shopping centre)
phone +48 12 628 78 63
Mon-Sat 9am-10pm, Sun 9am-10pm

ING Bank Śląski
ul. Pawia 5 (Galeria Krakowska shopping centre)
phone +48 12 628 74 55
Mon-Sat 9am-10pm, Sun 10am-9pm

ul. Kamieńskiego 11 (Bonarka City Center)
phone +48 12 687 43 60
Mon-Fri 10am-8pm, Sat 10am-2pm

Eurobank
ul. Pawia 5 (Galeria Krakowska shopping centre)
phone +48 71 770 05 59
Mon-Sat 9am-10pm, Sun 10am-9pm

ul. Starowiślna 79
phone +48 71 770 05 76
Mon-Fri 9am-6pm, Sat 9am-2pm

There are many cashpoints in the city, and in the city centre most of you will be able to find a bank that services your cards or the Euronet and Cash4You cashpoints. Many of these will offer charge-free withdrawals, depending on your bank and the account you hold.