Surf Forecasts:
Shark Alley surf forecast from 4 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 3PM (local time) - 3ft (0.9m), 6s period, SE swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 9AM (local time) - 6ft (1.9m), 9s period, N swell with 641 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 3PM (local time) - 3ft (0.9m), 6s period with SE swell.
Best Forecast Surf Conditions for Shark Alley this week:
The surf forecast for Shark Alley over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 05) at 3PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.1m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Shark Alley in the next 16 days are 1.9m 9s and forecast to arrive on Tuesday (Aug 11) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Tuesday (Aug 04) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Wed 5th Aug) | 3ft (0.9m) 6s |
| Best Surf | 3PM (Wed 5th Aug) | 3ft (0.9m) 6s |
| Most Powerful | 9AM (Tue 11th Aug) | 6ft (1.9m) 9s |
Table - best surf conditions forecast for Shark Alley over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 13°C on Tue morning, min 7°C on Tue night). Winds decreasing (strong winds from the SSE on Tue night, light winds from the WSW by Wed night). | Days 4-6 Weather SummaryHeavy rain (total 50mm), heaviest during Sun night. Very mild (max 16°C on Sun afternoon, min 9°C on Fri morning). Winds increasing (light winds from the WNW on Fri night, fresh winds from the NW by Sun morning). | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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) | ENE 12 | NE 12 | ENE 12 | SE 7 | SE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 6 | N 14 | N 13 | N 12 | NW 4 | NNW 5 | NNW 6 | NNW 7 | N 7 | N 8 | N 8 | N 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 15 | 23 | 14 | 159 | 64 | 11 | 22 | 27 | 18 | 14 | 15 | 14 | 12 | 15 | 67 | 169 | 187 | 131 | 270 | 246 | 448 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-off | off | off | off | off | off | cross-off | cross-off | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross |
High Tide | 11:06AM2.14m | 11:28PM2.20m | 11:50AM2.12m | 00:13AM2.16m | 12:38PM2.09m | 1:03AM2.12m | 1:32PM2.06m | 1:59AM2.08m | 2:36PM2.05m | 3:03AM2.06m | 3:49PM2.08m | 4:13AM2.08m | 4:59PM2.16m | ||||||||
Low Tide | 4:57PM0.63m | 5:32AM0.59m | 5:46PM0.69m | 6:21AM0.59m | 6:43PM0.73m | 7:14AM0.60m | 7:45PM0.75m | 8:11AM0.60m | 8:49PM0.75m | 9:13AM0.59m | 9:55PM0.71m | 10:18AM0.55m | 11:01PM0.65m | ||||||||
 |  |  | | | | | | | | | |  | |  |  |  |  |  |  | | |
 | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — |
 | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:38 | — | — | 5:39 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 7 | 42 | 65 | 34 | — |
Temp °C | 13 | 13 | 10 | 8 | 9 | 10 | 8 | 10 | 10 | 9 | 10 | 12 | 13 | 14 | 15 | 15 | 16 | 13 | 13 | 13 | 14 |
Feels °C | 5 | 3 | 0 | 2 | 5 | 6 | 4 | 6 | 6 | 5 | 7 | 8 | 7 | 7 | 8 | 8 | 9 | 12 | 7 | 2 | 6 |
Swell 1 Height (m) Direction Period (s) | ENE 12 | NE 12 | ENE 12 | ENE 9 | SE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 9 | ENE 13 | NE 14 | NE 13 | N 7 | N 8 | N 8 | ESE 6 |
| kJ | 15 | 23 | 14 | 8 | 64 | 11 | 22 | 27 | 18 | 14 | 8 | 4 | 4 | 7 | 17 | 7 | 7 | 131 | 270 | 246 | 73 |
Swell 2 Height (m) Direction Period (s) | ENE 8 | NE 8 | ENE 8 | NE 12 | NE 12 | SSE 5 | NE 11 | E 9 | NE 10 | N 14 | N 14 | NE 15 | N 12 | NE 14 | N 12 | N 12 | E 12 | NE 12 | NE 12 | NE 12 | ENE 12 |
| kJ | 6 | 2 | 7 | 6 | 6 | 2 | 5 | 2 | 4 | 4 | 15 | 8 | 12 | 7 | 3 | 3 | 3 | 6 | 6 | 6 | 14 |
Swell 3 Height (m) Direction Period (s) | E 18 | E 17 | — | E 16 | ENE 9 | NE 11 | E 9 | NE 11 | NE 16 | NE 10 | SE 9 | N 13 | NE 16 | N 12 | SE 8 | SE 9 | N 12 | E 12 | E 11 | E 11 | — |
| kJ | 6 | 6 | — | 5 | 7 | 5 | 2 | 5 | 10 | 4 | 3 | 14 | 10 | 12 | 3 | 3 | 3 | 3 | 2 | 3 | — |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 5 | SSE 5 | SE 7 | — | — | — | — | SSW 2 | SSW 3 | — | WNW 2 | NW 3 | NW 4 | NNW 5 | NNW 6 | NNW 7 | — | — | E 4 | N 8 |
| kJ | 60 | 85 | 90 | 159 | — | — | — | — | 1 | 1 | — | 1 | 3 | 15 | 67 | 169 | 187 | — | — | 20 | 448 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 108 | 73 | 117 | 49 | 0 | 115 | 115 | 119 | 115 | 124 | 246 | 115 | 115 | 313 | 156 | 113 | 36 | 49 | 84 | 132 | 119 |
Best forecast wave conditions in Great Barrier Island | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Shark Alley 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 Shark Alley Surf forecast
The above surf forecast table for Shark Alley provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Shark Alley can be found by selecting the local surf guide option on the grey menu. Our Shark Alley 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 (Shark Alley) 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 Shark Alley 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.
Shark Alley is 88 km (55 miles) from the city of Northshore. If you plan a holiday in Great Barrier Island, look for hotels and other accommodation in Northshore. Northshore has rooms for a wide range of budgets as well as car hire and transport links.
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