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Shark Alley surfForecast / Great Barrier Island / New Zealand
12 Day Weather and Surf, issued 5 am Tuesday 08 Jul 2025 NZST
Best Forecast Surf Conditions for Shark Alley this week:
The surf forecast for Shark Alley over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jul 12) at 3AM. The primary swell is predicted to be 10ft and 9s period with a secondary swell of 8ft and 9s. Another secondary swell of 5ft and 12s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Shark Alley in the next 12 days are 10ft 9s and forecast to arrive on Saturday (Jul 12) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4ft 5s period and expected on Monday (Jul 14) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sat 12th Jul) | 10ft (3.0m) 9s |
| Best Surf | 3AM (Sat 12th Jul) | 10ft (3.0m) 9s |
| Most Powerful | 3AM (Sat 12th Jul) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Shark Alley over the next 12 days.
Tuesday 08 | Wednesday 09 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (ft) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 13 | 13 | 13 | 12 | 12 | 12 | 7 | 8 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 6 | 7 | 10 | 7 | 5 | 8 | 8 | 9 | 11 | 11 | 11 | 12 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 599 | 385 | 615 | 600 | 865 | 789 | 873 | 665 | 556 | 621 | 878 | 1297 | 1023 | 996 | 615 | 515 | 555 | 629 | 423 | 399 | 257 | 201 | 418 | 218 | 159 | 117 | 176 | 360 | 176 | 144 | 102 | 68 | 55 | 50 | 48 | 72 |
Wind (mph) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | cross- on | cross- on | cross- off | cross- off | cross- off | cross- on | cross- on | cross | cross- off | off | cross- off | cross- off | cross | cross- off | cross | cross- on | cross- on | on | on | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross |
High Tide / height (ft) | 5:46PM 6.4 | 5:49AM 6.27 | 6:32PM 6.59 | 6:37AM 6.43 | 7:14PM 6.82 | 7:22AM 6.59 | 7:56PM 7.02 | 8:07AM 6.76 | 8:37PM 7.22 | 8:52AM 6.92 | 9:20PM 7.35 | 9:37AM 7.02 | 10:04PM 7.45 | 10:24AM 7.09 | 10:49PM 7.48 | 11:10AM 7.09 | 11:35PM 7.45 | 11:58AM 7.09 | 12:24AM 7.35 | 12:48PM 7.02 | 1:15AM 7.22 | 1:43PM 6.96 | 2:11AM 7.09 | |||||||||||||
Low Tide / height (ft) | 10:53AM 2.66 | 11:31PM 2.76 | 11:45AM 2.53 | 12:21AM 2.62 | 12:37PM 2.33 | 1:09AM 2.46 | 1:25PM 2.1 | 1:55AM 2.26 | 2:10PM 1.87 | 2:40AM 2.07 | 2:52PM 1.74 | 3:24AM 1.94 | 3:34PM 1.67 | 4:09AM 1.84 | 4:17PM 1.71 | 4:54AM 1.8 | 5:03PM 1.84 | 5:42AM 1.8 | 5:54PM 2 | 6:32AM 1.8 | 6:52PM 2.17 | 7:26AM 1.8 | 7:54PM 2.3 | |||||||||||||
Tuesday 08 | Wednesday 09 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||||||||||||
| Sunrise | 7:28 | - | - | 7:28 | - | - | 7:28 | - | - | 7:28 | - | - | 7:26 | - | - | 7:26 | - | - | 7:26 | - | - | 7:26 | - | - | 7:26 | - | - | 7:24 | - | - | 7:24 | - | - | 7:24 | - | - |
| Sunset | - | 5:16 | - | - | 5:16 | - | - | 5:17 | - | - | 5:17 | - | - | 5:19 | - | - | 5:20 | - | - | 5:20 | - | - | 5:21 | - | - | 5:21 | - | - | 5:22 | - | - | 5:22 | - | - | 5:23 | - |
 |  |  | |  |  | | | | | |  |  | | | |  |  | | |  | | | | | | |  | | | | | | | | | |
Rain (in) | - | - | - | - | 0.0 | - | - | - | - | 0.1 | 0.2 | 0.4 | - | - | 0.0 | - | 0.1 | 0.2 | 0.0 | - | - | - | - | 0.1 | 0.0 | 0.1 | 0.3 | 0.4 | 0.1 | 0.1 | - | - | - | - | - | - |
| Temp. °F | 57 | 57 | 59 | 57 | 57 | 59 | 59 | 59 | 59 | 59 | 61 | 61 | 59 | 61 | 59 | 59 | 59 | 55 | 57 | 57 | 57 | 57 | 59 | 59 | 59 | 59 | 61 | 59 | 61 | 61 | 61 | 61 | 57 | 55 | 59 | 57 |
| Feels °F (?) | 48 | 46 | 46 | 46 | 48 | 52 | 52 | 52 | 50 | 46 | 45 | 45 | 48 | 52 | 52 | 54 | 52 | 50 | 55 | 46 | 45 | 48 | 48 | 45 | 52 | 54 | 55 | 48 | 57 | 48 | 46 | 48 | 46 | 46 | 48 | 46 |
Short Range Forecast: Some drizzle, heaviest during Wed afternoon. Very mild (max 59°F on Tue night, min 57°F on Tue morning). Mainly fresh winds. | Days 3-6 Weather Summary Heavy rain (total 1.0in), heaviest during Fri night. Very mild (max 61°F on Fri afternoon, min 55°F on Sun night). Winds decreasing (near gales from the N on Fri night, calm by Sun night). | Days 6-9 Weather Summary Moderate rain (total 0.6in), heaviest on Wed night. Very mild (max 61°F on Wed night, min 57°F on Mon morning). Winds increasing (light winds from the SSW on Mon morning, strong winds from the NW by Tue afternoon). | Long Range Forecast: Moderate rain (total 0.6in), heaviest on Thu morning. Very mild (max 61°F on Thu afternoon, min 54°F on Sat morning). Winds decreasing (near gales from the SSE on Thu night, light winds from the SE by Sat night). | |||||||||||||||||||||||||||||||||
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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 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 12 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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