Shag Rock surf forecast from 16 Sep 2026:
- Best quality surf: Friday 18 Sep, 12AM (local time) - 10ft (3.0m), 13s period, WSW swell with offshore winds.
- Most powerful swell: Monday 21 Sep, 6AM (local time) - 16ft (5.0m), 16s period, SW swell with 12,950 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 6AM (local time) - 4.5ft (1.4m), 12s period with WSW swell.
Best Forecast Surf Conditions for Shag Rock this week:
The surf forecast for Shag Rock over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 17) at 6AM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 0.4m and 17s. Another secondary swell of 0.8m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Shag Rock in the next 16 days are 5.0m 16s and forecast to arrive on Monday (Sep 21) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Thu 17th Sep) | 4.5ft (1.4m) 12s |
| Best Surf | 12AM (Fri 18th Sep) | 10ft (3.0m) 13s |
| Most Powerful | 6AM (Mon 21st Sep) | 16ft (5.0m) 16s |
Table - best surf conditions forecast for Shag Rock over the next 16 days.
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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