South-west WA's mutant slab barrel — The Box is an elite-level reef break that reels off a shallow reef shelf with freight-train speed. For expert surfers only, this Indian Ocean beast is powered by the same diurnal tides that define the Margaret River region's unique rhythm.
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How the tides and swell change through the year at Western Australia locations.
Afternoon seabreezes, still plenty of swell.
The peak — massive Indian Ocean groundswells.
Powerful SW swells, cooler temps, less wind.
Fading into smaller but still clean conditions.
Annual tide statistics computed from published BOM 2026 predictions for The Box. Times use the location time zone (Australia/Perth).
1.3m on 15 Jun at 08:34
0.09m on 24 Dec at 06:01
0.33m between high and low
June — highest avg high tides
Two high and two low tides daily
1.21m — from lowest low to highest high
High and low tide predictions for the next 7 days, from BOM. Times use Australia/Perth.
| Day | High tides | Low tides |
|---|---|---|
| Mon 26 Oct | 11:45 · 0.6m, 20:55 · 0.96m | 05:06 · 0.32m, 14:08 · 0.55m |
| Tue 27 Oct | 12:50 · 0.57m, 21:19 · 1m | 06:14 · 0.26m, 14:26 · 0.54m |
| Wed 28 Oct | 13:54 · 0.53m, 21:54 · 1.01m | 07:15 · 0.22m, 14:49 · 0.53m |
| Thu 29 Oct | 22:34 · 0.99m | 08:14 · 0.21m |
| Fri 30 Oct | 11:29 · 0.28m, 23:16 · 0.94m | 09:11 · 0.22m, 12:00 · 0.28m |
| Sat 31 Oct | 11:44 · 0.28m, 23:59 · 0.87m | 10:09 · 0.26m, 12:57 · 0.27m |
| Sun 1 Nov | 21:13 · 0.75m | 13:37 · 0.29m, 22:28 · 0.74m |