Surf Forecasts:
Shag Rock surf forecast from 20 Jun 2026:
- Best quality surf: Thursday 25 Jun, 9PM (local time) - 10ft (3.0m), 13s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 25 Jun, 9PM (local time) - 10ft (3.0m), 13s period, SSW swell with 3,489 kJ wave energy.
- Next surfable swell (1★+): Monday 22 Jun, 6PM (local time) - 4.5ft (1.3m), 14s 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 Monday (Jun 22) at 6PM. The primary swell is predicted to be 1.3m and 14s period with a secondary swell of 0.8m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Shag Rock in the next 16 days are 3.0m 13s and forecast to arrive on Thursday (Jun 25) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 4s period and expected on Friday (Jun 26) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Mon 22nd Jun) | 4.5ft (1.3m) 14s |
| Best Surf | 9PM (Thu 25th Jun) | 10ft (3.0m) 13s |
| Most Powerful | 9PM (Thu 25th Jun) | 10ft (3.0m) 13s |
Table - best surf conditions forecast for Shag Rock over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Sun afternoon. Very mild (max 16°C on Sun morning, min 11°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 81mm), heaviest during Thu night. Very mild (max 16°C on Tue afternoon, min 8°C on Thu night). Winds increasing (light winds from the ENE on Tue morning, fresh winds from the SSE by Thu night). | ||||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 13 | SW 13 | WSW 13 | WSW 12 | WSW 12 | SW 16 | SW 16 | SW 14 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 16 | SW 14 | SW 13 | SW 12 | SW 13 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 919 | 711 | 683 | 1511 | 1649 | 1018 | 871 | 763 | 691 | 1049 | 1184 | 1079 | 877 | 671 | 525 | 1494 | 1512 | 2911 | 1599 | 1657 | 1849 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | on | on | cross | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 1:33PM2.54m | 1:58AM2.69m | 2:28PM2.42m | 2:52AM2.54m | 3:27PM2.32m | 3:48AM2.40m | 4:27PM2.27m | 4:46AM2.30m | 5:27PM2.26m | 5:44AM2.24m | 6:23PM2.29m | 6:39AM2.24m | 7:15PM2.34m | ||||||||
Low Tide | 7:45PM0.34m | 8:23AM0.36m | 8:40PM0.48m | 9:18AM0.47m | 9:38PM0.62m | 10:13AM0.56m | 10:37PM0.71m | 11:09AM0.61m | 11:37PM0.76m | 12:03PM0.63m | 00:34AM0.76m | 12:55PM0.62m | 1:26AM0.72m | ||||||||
 | |  | |  |  | |  | | |  |  |  | |  | |  | | | | | |
 | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — |
 | — | 5:12 | — | — | 5:12 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:14 | — |
mm | — | — | — | — | 2 | — | — | — | — | — | — | 11 | 3 | 5 | 4 | 1 | 13 | 44 | 4 | — | — |
Temp °C | 13 | 14 | 15 | 16 | 16 | 15 | 14 | 13 | 12 | 15 | 16 | 15 | 15 | 15 | 13 | 13 | 11 | 10 | 10 | 11 | 11 |
Feels °C | 11 | 12 | 12 | 13 | 14 | 15 | 12 | 11 | 11 | 12 | 14 | 11 | 12 | 13 | 10 | 9 | 7 | 4 | 3 | 6 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | WSW 13 | WSW 12 | WSW 17 | W 10 | SW 16 | SW 14 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 16 | SW 14 | SW 13 | SW 12 | SW 13 | SW 14 |
| kJ | 919 | 711 | 683 | 1224 | 522 | 563 | 871 | 763 | 691 | 1049 | 1184 | 1079 | 877 | 671 | 525 | 1494 | 1512 | 2911 | 1599 | 1657 | 1849 |
Swell 2 Height (m) Direction Period (s) | SW 21 | SW 20 | SW 19 | SW 18 | — | SW 16 | WSW 10 | W 9 | SW 7 | W 8 | W 8 | W 7 | NW 7 | NW 6 | WNW 9 | WNW 8 | WNW 7 | — | — | — | SW 22 |
| kJ | 117 | 101 | 299 | 449 | — | 1018 | 315 | 130 | 44 | 48 | 31 | 10 | 2 | 8 | 199 | 44 | 5 | — | — | — | 18 |
Swell 3 Height (m) Direction Period (s) | — | — | WSW 12 | — | — | SW 12 | SW 15 | SSW 6 | W 9 | — | — | NNW 4 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 57 | — | — | 232 | 344 | 43 | 73 | — | — | 2 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | W 6 | WSW 11 | WSW 12 | — | — | — | — | — | — | NNE 3 | NNE 3 | NE 3 | E 3 | S 8 | S 7 | SE 5 | ESE 5 | S 7 | ESE 4 |
| kJ | — | — | 109 | 1511 | 1649 | — | — | — | — | — | — | 4 | 5 | 2 | 3 | 165 | 275 | 53 | 44 | 215 | 13 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 38 | 38 | 76 | 88 | 221 | 9 | 9 | 0 | 0 | 2 | 117 | 111 | 67 | 38 | 2 | 2 | 111 | 163 | 63 | 9 |
Best forecast wave conditions in Auckland | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Shag Rock surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Shag Rock Surf forecast
The above surf forecast table for Shag Rock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Shag Rock can be found by selecting the local surf guide option on the grey menu. Our Shag Rock surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Shag Rock) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Shag Rock may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Shag Rock is 10 km (6 miles) from the city of Waitakere. If you plan a holiday in Auckland, look for hotels and other accommodation in Waitakere. Waitakere has rooms for a wide range of budgets as well as car hire and transport links.
Nearest