The invention relates to an abrasive wateget cutting system (2) including: an abrasive watcrjct cutting head (14) comprising: a nozzle (16) adapted for guiding an abrasive wateget (6) intended to cut a metallic workpiece (4); an abrasive wateget flow direction (12); a monitoring device (28) including at least an upstream sensor and a downstream sensor which are distributed along the abrasive wateget flow direction (12) downstream the inlet end of the nozzle (16), and which are adapted for measuring at least one wear characteristic of the nozzle (16) or a characteristic of the abrasive wateget (6), or an alignment characteristic of the nozzle (16) with an orifice (18). The sensors comprise a set of accelerometers (40; 42) and a set of microphones (44; 46). The wear monitoring device (28) being configured to monitor at least one characteristic of the abrasive wateget cutting system (2) through at least the upstream sensor and the downstream sensor.
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