Water mist nozzle for a fire suppression system, comprising a nozzle head including a discharge nozzle for supplying a fluid jet; a support structure; and a stationary deflector element which is fastened to the support structure and comprises a body with a substantially round outer periphery having a base portion and a substantially conical upper portion with a central peak; wherein the substantially conical upper portion provides a plurality of flowpaths, the flowpaths extending substantially radially from a radial position close to the central peak in a direction towards the outer periphery of the deflector element, the flowpaths having at least one portion (26a, 26b, 26c) of decreasing slope, in which the slope of the bottom of the flowpaths decreases along the flow direction towards the outer periphery; wherein the stationary deflector element is fastened to the support structure such that the central peak of the substantially conical upper portion of the stationary deflector element faces the discharge nozzle and that the fluid jet exiting the discharge nozzle impinges onto the central peak and is distributed to the environment, substantially in a lateral direction, through the plurality of flowpaths wherein at least some of the flowpaths are formed as open fluid channels or grooves on the substantially conical upper portion of the stationary deflector element characterized in that at least one flowpath opening is formed in the bottom of at least one of the flowpaths allowing a portion of the fluid flowing along the at least one flowpath to enter into an internal fluid channel or tunnel and being dispensed from an underside of the deflector element. a nozzle head including a discharge nozzle for supplying a fluid jet; a support structure; and a stationary deflector element which is fastened to the support structure and comprises a body with a substantially round outer periphery having a base portion and a substantially conical upper portion with a central peak; wherein the substantially conical upper portion provides a plurality of flowpaths, the flowpaths extending substantially radially from a radial position close to the central peak in a direction towards the outer periphery of the deflector element, the flowpaths having at least one portion (26a, 26b, 26c) of decreasing slope, in which the slope of the bottom of the flowpaths decreases along the flow direction towards the outer periphery; wherein the stationary deflector element is fastened to the support structure such that the central peak of the substantially conical upper portion of the stationary deflector element faces the discharge nozzle and that the fluid jet exiting the discharge nozzle impinges onto the central peak and is distributed to the environment, substantially in a lateral direction, through the plurality of flowpaths wherein at least some of the flowpaths are formed as open fluid channels or grooves on the substantially conical upper portion of the stationary deflector element characterized in that at least one flowpath opening is formed in the bottom of at least one of the flowpaths allowing a portion of the fluid flowing along the at least one flowpath to enter into an internal fluid channel or tunnel and being dispensed from an underside of the deflector element.