Slack water times and a tidal current map for Port Phillip — the Rip, the Heads and the southern Bay — and Western Port.
Through the Heads the tide runs at four knots and more, and slack lasts minutes. It turns at a different time at every site, and the run-in and run-out don't behave the same. Slack Water works it out site by site, on your phone, with no reception needed.
SLACK TIMES, SITE BY SITE
Port Phillip: the Rip, Lonsdale Wall, Pope's Eye, Portsea Hole, the Hurricane wreck, Portsea, Queenscliff, Blairgowrie and Rye piers.
Western Port: the Western Entrance, Cowes and Stony Point jetties, San Remo bridge and jetty. See the turn, and the window when the current stays under your own limit.
CURRENT MAP OF BOTH BAYS
See where it's running and where it's slack: arrows, a colour map by speed, or animated flow.
YOUR OWN SPOTS AND TRACKS
Drop your marks on the map, or open a GPX file from your plotter, email or Files and pick the ones you want. Current and slack at each one. Hide spots from the map or keep only the ones you follow in the slack list. Record your track on the water and export it as GPX.
BUILT-IN MAP OF BOTH BAYS
Depth shading, contours every 5 m and, if you want it, the seabed type (sand, mud, seagrass, reef) and the banks that dry at low tide. All on your phone.
SLACK ALERTS
Get a heads-up before slack at the sites you pick. You choose how early.
MELBOURNE TIME, ALWAYS
Times are shown in Melbourne time, daylight saving included.
MADE FOR
Fishos, scuba divers, freedivers, snorkellers, kayakers and sailors crossing the Rip.
FREE
• Current right now, anywhere in Port Phillip and Western Port
• Next slack at every site and spot
• Your spots and GPX import/export
PLAN AHEAD — YEARLY SUBSCRIPTION
• Any day, any time: plan tomorrow's trip tonight
• Full-day current curve and every slack window
• Three-day current map
• Slack alerts
The subscription renews every year unless cancelled at least 24 hours before the end of the period. Manage or cancel it in your App Store account settings.
PLANNING AID ONLY — NOT FOR NAVIGATION
Predictions are astronomical tide only (no wind, swell, rain or river flow), from simplified models of each bay, averaged over the depth; times are approximate. They are not official predictions: the references are the Bureau of Meteorology tide tables and AHO charts. Always check conditions on site.
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