The WA Ocean Forecast, Scored for What You Do.
Stop checking four different weather websites. Fathom custom-weights wind directions, wave periods, tides, and temperature for 9 distinct water sports to generate a single 0–10 score you can trust.
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Major Features Overview
The Activity Scoring Engine
Fathom custom-scores raw atmospheric and marine data for 9 distinct water sports. A 15-knot southwesterly breeze is perfect for wingfoilers at Leighton, but ruins the waves for surfers at Cottesloe. By weighting wind direction, gusts, temperatures, UV, pressure, swell height/period, and tide trends, Fathom calculates a single 0–10 score you can trust.
Specialized logic includes Perth Metro swell shadow models (Rottnest/Garden Islands) and safety overrides like Rock Fishing wave-height gates.
Swell Shadow Modelling
Fathom's Swell Shadow tool models exactly how incoming swell bends and weakens as it travels around offshore islands — spot by spot, hour by hour. Built on real bathymetry and physics-based modelling, it shows you which breaks are sheltered and which are wide open, so you know what's actually hitting the beach before you check anything else.
Spots & Custom Spot Creator
Choose from Fathom's curated database of Western Australian spots spanning Perth Metro, Rottnest Island, the South West, Great Southern, Mid West, and North West. Browse spots on an interactive satellite map, star your favourites, and fine-tune any spot's facing angle so swell exposure and wind direction scores are calibrated exactly to how that break actually works.
Weekly Forecasts & Graphs
Plan your week with expandable 7-day outlook cards that present hourly score breakdowns, wave heights, wind directions, and wave periods. Dive deep into conditions with the weekly tide curve showing local peaks/troughs, alongside interactive meteorological and oceanographic charts.
Sessions & Group Planning
Coordination is hard; forecast sharing shouldn't be. Group chats are where session planning goes to die. Fathom lets you plan sessions directly inside the app: lock in the spot, activity, date, and best time window, and share it with your crew in one tap so everyone knows when and where to suit up.
Personalized Alerts & Preferences
Condition Alerts are coming — set a target score for any spot and activity, and Fathom will notify you when it hits (e.g., Trigg Point Surfing 7/10 or better).