Saturday: West of Rottnest island: NW winds 15/20 knots, increasing to W/NW 18/23 knots for a period late morning. Winds tending SW 15/20 knots throughout in the afternoon, before easing to S/SW 10/15 knots towards the evening. Seas to 1.5m. Swell 2.5m, rising to 4.0m by evening.
East of Rottnest Island: NW winds 10/15 knots increasing to W/NW winds 15/20 knots by mid morning.
Winds tending SW 15/20 knots in the afternoon, before easing to S/SW 10/15 knots towards the evening. Seas 1.0m to 1.5m. Swell 1.0m to 1.5m rising to 2.0m by evening.

Sunday: E/SE winds 8/13 knots, shifting S/SW 13/18 knots in the afternoon.

Good luck if your going out on the weekend or fishing in the river. Just remember safety comes first and risking your life isn't worth it just to catch a fish.

Tight Lines,
Adam