Barclays Bank and Nouvobanq operate daily banking services at the airport around scheduled flight times in the morning and deals with foreign exchange transactions in the afternoons. Please note that other banking services like deposits are only in the mornings.
Seymore Money Changing is a money changer opened daily and offers foreign exchange services only.
There are ATM facilities located at the terminal which accepts international debit and credit cards like VISA, American Express and Union Pay where you can dispense monies for your stay. Most shops also accept card payments as well for purchases.