Tempo is the speed at which your basic attacks will happen. They can be found as an attribute beside Crit and Reg on any kind of armor or weapon.
Your base attack speed is set to 100%; if your Tempo is 110%, it means that you will attack 10% faster, if it has a 20% tempo it will attack 20% slower than the base tempo.
- Tempo seems to lower the amount of MP per hit.
- Tempo is Italian for 'time'.