Surf Forecasts:
Banks Peninsula - Magnet Bay surf forecast from 15 Sep 2026:
- Best quality surf: Monday 21 Sep, 3AM (local time) - 10ft (3.0m), 10s period, S swell with onshore winds.
- Most powerful swell: Sunday 20 Sep, 3PM (local time) - 18ft (5.5m), 12s period, SSW swell with 7,897 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 12AM (local time) - 1.5ft (0.5m), 15s period with S swell.
Best Forecast Surf Conditions for Banks Peninsula - Magnet Bay this week:
The surf forecast for Banks Peninsula - Magnet Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 17) at 12AM. The primary swell is predicted to be 0.5m and 15s period with a secondary swell of 0.2m and 10s. Another secondary swell of 1.1m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Banks Peninsula - Magnet Bay in the next 16 days are 5.5m 12s and forecast to arrive on Sunday (Sep 20) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Saturday (Sep 19) at 9AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 17th Sep) | 1.5ft (0.5m) 15s |
| Best Surf | 3AM (Mon 21st Sep) | 10ft (3.0m) 10s |
| Most Powerful | 3PM (Sun 20th Sep) | 18ft (5.5m) 12s |
Table - best surf conditions forecast for Banks Peninsula - Magnet Bay over the next 16 days.
Short Range ForecastLight rain (total 7mm), mostly falling on Thu afternoon. Very mild (max 14°C on Wed morning, min 6°C on Thu afternoon). Winds decreasing (fresh winds from the SSW on Thu afternoon, calm by Fri afternoon). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Very mild (max 15°C on Sat afternoon, min 6°C on Sun night). Winds increasing (calm on Fri night, strong winds from the SW by Sun morning). | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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) | SSW 13 | SSW 13 | SSW 13 | S 15 | SSW 14 | S 5 | S 16 | S 16 | SSW 15 | SSW 15 | SSW 14 | SSW 11 | SSW 16 | SSW 10 | SSW 12 | SSW 11 | S 10 | S 12 | S 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 34 | 34 | 35 | 109 | 105 | 106 | 132 | 177 | 397 | 456 | 459 | 128 | 429 | 3614 | 7897 | 3322 | 1055 | 800 | 663 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-off | cross-off | on | on | glassy | glassy | glassy | off | cross-on | cross-on | on | on | cross-on | cross-off | cross-off | cross-on |
High Tide | 7:09AM1.75m | 7:33PM1.64m | 8:05AM1.69m | 8:30PM1.58m | 9:04AM1.65m | 9:29PM1.54m | 10:02AM1.63m | 10:27PM1.53m | 10:57AM1.64m | 11:19PM1.55m | 11:46AM1.67m | 00:05AM1.58m | |||||||
Low Tide | 00:58AM0.33m | 1:30PM0.40m | 1:50AM0.40m | 2:24PM0.47m | 2:43AM0.46m | 3:19PM0.52m | 3:36AM0.49m | 4:12PM0.53m | 4:27AM0.50m | 5:02PM0.52m | 5:15AM0.47m | 5:48PM0.48m | |||||||
 |  |  |  |  | |  | | |  | |  | | |  | | | | | |
 | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — |
 | — | — | 6:17 | — | — | 6:19 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — |
mm | — | — | — | 2 | 1 | 2 | 2 | — | — | — | — | — | 1 | — | 1 | — | — | — | 2 |
Temp °C | 12 | 14 | 11 | 9 | 9 | 9 | 7 | 10 | 11 | 9 | 13 | 15 | 11 | 9 | 8 | 8 | 10 | 12 | 12 |
Feels °C | 9 | 11 | 6 | 7 | 7 | 5 | 2 | 7 | 9 | 7 | 11 | 13 | 9 | -2 | -2 | -1 | 6 | 8 | 8 |
Swell 1 Height (m) Direction Period (s) | ENE 6 | SSW 13 | SSW 13 | S 15 | S 6 | ESE 10 | S 5 | SE 12 | SSW 15 | SSW 15 | SSW 14 | SSW 11 | SSW 16 | ESE 11 | ESE 11 | SE 11 | S 10 | S 12 | E 10 |
| kJ | 16 | 34 | 35 | 109 | 77 | 41 | 46 | 157 | 397 | 456 | 459 | 128 | 429 | 47 | 39 | 30 | 1055 | 800 | 50 |
Swell 2 Height (m) Direction Period (s) | S 8 | NE 6 | E 5 | ESE 10 | SSW 14 | SSW 15 | S 16 | SSW 9 | ESE 12 | SE 12 | SE 12 | SE 11 | ESE 11 | ENE 11 | — | E 11 | SE 10 | ESE 11 | SE 13 |
| kJ | 19 | 9 | 2 | 9 | 105 | 71 | 132 | 70 | 180 | 205 | 142 | 126 | 109 | 22 | — | 9 | 27 | 68 | 7 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | S 8 | S 8 | ENE 5 | ESE 11 | E 12 | ESE 9 | S 16 | SSW 7 | NE 8 | NE 8 | S 14 | ENE 10 | — | — | ENE 11 | E 9 | E 11 | NE 4 |
| kJ | 34 | 11 | 5 | 3 | 47 | 3 | 34 | 177 | 48 | 18 | 9 | 106 | 20 | — | — | 23 | 7 | 9 | 1 |
Wind waves Height (m) Direction Period (s) | NW 3 | NNW 3 | W 3 | SSW 6 | S 6 | S 5 | SW 5 | WNW 2 | NE 6 | — | N 3 | — | WSW 3 | SSW 10 | SSW 12 | SSW 11 | — | NNE 3 | S 11 |
| kJ | 5 | 4 | 1 | 83 | 74 | 106 | 16 | 1 | 1 | — | 5 | — | 3 | 3614 | 7897 | 3322 | — | 3 | 663 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 26 | 28 | 0 | 0 | 26 | 30 | 0 | 0 | 0 | 0 | 4 | 28 | 716 | 744 | 32 | 0 | 0 | 30 |
Best forecast wave conditions in Canterbury | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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 Banks Peninsula - Magnet Bay 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 Banks Peninsula - Magnet Bay Surf forecast
The above surf forecast table for Banks Peninsula - Magnet Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Banks Peninsula - Magnet Bay can be found by selecting the local surf guide option on the grey menu. Our Banks Peninsula - Magnet Bay 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 (Banks Peninsula - Magnet Bay) 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 Banks Peninsula - Magnet Bay 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.
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