The Monster attack speed of a monster determines the rate of attack of a monster in certain situations. This is a factor which balances the attacking power of a monster.
The speeds of monsters are represented by a bar on which there are several possible values ranging from 7 (fastest) to 1 (slowest). The bar is separated into ten squares of lightening shades of blue. The value represents the number of squares shown, with 10 displaying a full bar and 0 displaying an empty bar. The delay time in seconds between each attack is equal to 6 - 0.6*(Speed Value).
| ||None||No monster hits with this speed.|
| ||Scarab swarm, Pestilent Bloat||Hits low, but often, and can poison.|
| ||Killerwatt, thermonuclear smoke devil|
| ||Flesh Crawler||Fleshcrawlers only hit 1s.|
| ||Most bare-handed monsters, including bare-handed human||Most of them, if not all, use melee attacks.|
| ||Wizards and dark variation, humans holding weapons with attack speed 5, zombies holding weapon, dwarfs,||Wizards attack slower if hit from far away, but players casting magic far away will not slow down.|
| ||Giants, humans wielding crossbows|
| ||White Knight||They hit with two-handed swords.|
| ||Dad, TzTok-Jad|
| ||JalTok-Jad||JalTok-Jad in The Inferno hit with this speed.|
| ||Scarab mage||Hits slowly but hard and accurately.|
| ||Elvarg, Melzar the Mad, Monk of Zamorak||These monsters hit with varied speed.All of them have two types of attack style, All the melee attacks of these monster have attack speed of 6, while ranged and magic are 5.|