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Surf Forecasts:
Shark Alley surfForecast / Great Barrier Island / New Zealand
16 Day Weather and Surf, issued 11 am Tuesday 05 May 2026 NZSTForecast update in hr min s Forecast update imminent
Shark Alley surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Shark Alley sea temperature is
19.3° C
(Which is 1.0°C warmer than normal for this time of year)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 Tuesday (May 12) at 3AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.2m 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 2.5m 13s and forecast to arrive on Saturday (May 09) 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 1.4m 5s period and expected on Sunday (May 10) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 12th May) | 3ft (0.9m) 11s |
| Best Surf | 3AM (Tue 12th May) | 3ft (0.9m) 11s |
| Most Powerful | 9PM (Sat 9th May) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for Shark Alley over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Tue morning. Warm (max 20°C on Wed night, min 17°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 19mm), heaviest on Sat morning. Very mild (max 19°C on Fri afternoon, min 15°C on Sun morning). Winds increasing (light winds from the WSW on Sat afternoon, near gales from the WSW by Sun night). | ||||||||||||||||||||
Tuesday 5 | Wednesday 6 | Thursday 7 | Friday 8 | Saturday 9 | Sunday 10 | Monday 11 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 | NE 8 | NE 9 | NE 8 | NE 8 | NE 9 | NE 9 | ENE 10 | NE 13 | NE 12 | ENE 13 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | |
268 | 293 | 207 | 219 | 140 | 295 | 349 | 372 | 330 | 388 | 577 | 485 | 1245 | 1439 | 1622 | 1045 | 748 | 408 | 270 | 206 | 202 | |
Wind (km/h) | |||||||||||||||||||||
cross-on | cross-on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-off | cross-off | off | off | off | off | off | cross-off | |
High Tide | 9:27AM2.04m | 9:56PM2.10m | 10:06AM2.00m | 10:35PM2.06m | 10:47AM1.97m | 11:16PM2.02m | 11:31AM1.93m | 00:00AM1.98m | 12:16PM1.90m | 00:46AM1.96m | 1:04PM1.87m | 1:37AM1.95m | 1:55PM1.87m | 2:32AM1.96m | |||||||
Low Tide | 3:24PM0.60m | 3:52AM0.67m | 4:04PM0.62m | 4:36AM0.71m | 4:45PM0.65m | 5:23AM0.75m | 5:28PM0.70m | 6:12AM0.78m | 6:16PM0.76m | 7:04AM0.80m | 7:10PM0.80m | 7:57AM0.79m | 8:10PM0.82m | ||||||||
 |  |  |  |  |  | | |  | | |  |  | | | | | | | | | |
 | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — |
 | — | 5:29 | — | — | 5:28 | — | — | 5:27 | — | — | 5:25 | — | — | 5:24 | — | — | 5:23 | — | — | 5:23 | — |
1 | — | 1 | — | — | — | — | — | — | — | — | 3 | 12 | — | 4 | — | — | — | — | — | 1 | |
Temp °C | 17 | 18 | 18 | 18 | 19 | 20 | 20 | 18 | 18 | 18 | 19 | 19 | 18 | 19 | 17 | 15 | 17 | 17 | 16 | 15 | 14 |
13 | 15 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 17 | 13 | 7 | 8 | 8 | 6 | 7 | 8 | |
Swell 1 Height (m) Direction Period (s) | N 11 | N 10 | N 10 | N 10 | E 9 | E 10 | N 12 | N 12 | N 11 | N 11 | NE 9 | ENE 10 | NE 13 | NE 12 | ENE 13 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | ENE 11 | ENE 11 |
 kJ | 2 | 2 | 2 | 2 | 130 | 8 | 3 | 3 | 2 | 2 | 446 | 485 | 1245 | 1439 | 1622 | 1045 | 748 | 408 | 270 | 206 | 202 |
Swell 2 Height (m) Direction Period (s) | — | — | N 10 | N 10 | N 10 | N 9 | — | N 14 | N 14 | — | N 11 | NE 13 | N 10 | N 6 | NNW 6 | NNW 7 | N 13 | N 13 | NW 6 | NW 5 | N 12 |
| kJ | — | — | 2 | 2 | 2 | 2 | — | 4 | 4 | — | 2 | 128 | 2 | 84 | 52 | 30 | 3 | 3 | 11 | 4 | 11 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | N 9 | — | — | — | — | — | — | — | — | N 11 | N 15 | — | — | — | N 13 | N 12 | NW 6 |
| kJ | — | — | — | — | 2 | — | — | — | — | — | — | — | — | 2 | 4 | — | — | — | 3 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 | NE 8 | NE 9 | NE 8 | NE 8 | NE 9 | NE 9 | N 5 | NNW 6 | W 3 | W 5 | WSW 4 | WSW 5 | WSW 5 | WSW 5 | SW 4 | SSW 4 |
| kJ | 268 | 293 | 207 | 219 | 140 | 295 | 349 | 372 | 330 | 388 | 577 | 90 | 220 | 5 | 52 | 43 | 87 | 54 | 44 | 26 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 115 | 115 | 53 | 104 | 115 | 102 | 124 | 191 | 102 | 156 | 346 | 346 | 63 | 4 | 36 | 51 | 73 | 73 | 51 | 51 | 49 |
Best forecast wave conditions in Great Barrier Island | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 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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