Surf Forecasts:
Banks Peninsula - Magnet Bay surf forecast from 25 Aug 2026:
- Best quality surf: Monday 31 Aug, 3AM (local time) - 13ft (4.0m), 9s period, SSW swell with onshore winds.
- Most powerful swell: Monday 31 Aug, 6AM (local time) - 15ft (4.5m), 10s period, SSW swell with 3,648 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 9PM (local time) - 4.5ft (1.3m), 15s period with SSW 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 Tuesday (Aug 25) at 9PM. The primary swell is predicted to be 1.3m and 15s period with a secondary swell of 0.2m and 13s. Another secondary swell of 0.6m and 3s 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 4.5m 10s and forecast to arrive on Monday (Aug 31) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 8s period and expected on Friday (Aug 28) at 9AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Tue 25th Aug) | 4.5ft (1.3m) 15s |
| Best Surf | 3AM (Mon 31st Aug) | 13ft (4.0m) 9s |
| Most Powerful | 6AM (Mon 31st Aug) | 15ft (4.5m) 10s |
Table - best surf conditions forecast for Banks Peninsula - Magnet Bay over the next 16 days.
Short Range ForecastModerate rain (total 13mm), heaviest on Wed afternoon. Very mild (max 18°C on Tue morning, min 6°C on Thu morning). Winds increasing (calm on Tue night, strong winds from the NE by Thu afternoon). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sun afternoon. Very mild (max 16°C on Fri morning, min 4°C on Sun night). Winds increasing (calm on Fri night, strong winds from the SSW by Sun afternoon). | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | SSW 15 | SSW 15 | SSW 15 | SSW 13 | SSW 15 | S 17 | S 16 | S 14 | S 12 | S 12 | S 11 | S 11 | S 10 | S 10 | SSW 9 | SSW 11 | SSW 14 | SSW 9 | SSW 10 | S 10 | S 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 754 | 666 | 860 | 651 | 886 | 3049 | 2756 | 1614 | 670 | 325 | 246 | 178 | 130 | 68 | 65 | 214 | 763 | 3216 | 3314 | 1909 | 1957 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | glassy | cross | cross | off | off | off | cross-off | cross | glassy | off | off | cross | cross-on | on | on | cross-off | glassy | cross-off |
High Tide | 1:47PM1.77m | 2:01AM1.68m | 2:26PM1.81m | 2:39AM1.71m | 3:03PM1.83m | 3:17AM1.74m | 3:41PM1.84m | 3:56AM1.76m | 4:19PM1.84m | 4:36AM1.77m | 4:59PM1.82m | 5:18AM1.78m | 5:42PM1.79m | ||||||||
Low Tide | 7:50PM0.41m | 8:01AM0.32m | 8:30PM0.36m | 8:42AM0.27m | 9:11PM0.32m | 9:23AM0.24m | 9:51PM0.29m | 10:05AM0.22m | 10:32PM0.27m | 10:49AM0.23m | 11:15PM0.27m | 11:36AM0.25m | 00:01AM0.28m | ||||||||
 |  |  |  |  |  |  | |  | | |  | | | | | |  | | | | |
 | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — |
 | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — |
mm | — | — | — | — | 6 | 6 | 1 | — | — | — | — | — | — | — | — | — | 5 | 2 | — | — | — |
Temp °C | 18 | 18 | 13 | 12 | 10 | 8 | 6 | 8 | 14 | 16 | 16 | 11 | 13 | 13 | 10 | 10 | 6 | 6 | 9 | 11 | 8 |
Feels °C | 12 | 13 | 10 | 11 | 6 | 5 | 1 | -1 | 8 | 11 | 12 | 8 | 10 | 10 | 8 | 6 | -3 | -3 | 5 | 9 | 5 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 15 | SSW 13 | SSW 15 | S 17 | S 16 | S 14 | S 12 | S 12 | ENE 9 | S 11 | S 10 | SSW 7 | SSW 9 | SSW 11 | NE 7 | E 11 | E 11 | S 10 | S 14 |
| kJ | 754 | 666 | 860 | 651 | 886 | 3049 | 2756 | 1614 | 670 | 325 | 222 | 178 | 130 | 52 | 65 | 214 | 11 | 10 | 2 | 1909 | 1957 |
Swell 2 Height (m) Direction Period (s) | ESE 14 | ESE 13 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 11 | SE 12 | SE 16 | S 11 | ENE 8 | ENE 9 | S 10 | ENE 6 | ENE 6 | SE 12 | SE 12 | SE 11 | SSW 12 | SE 11 |
| kJ | 18 | 18 | 18 | 17 | 17 | 16 | 14 | 13 | 6 | 10 | 246 | 51 | 50 | 68 | 25 | 16 | 6 | 5 | 5 | 1392 | 5 |
Swell 3 Height (m) Direction Period (s) | NE 6 | NNE 6 | ESE 12 | NNE 5 | NNE 6 | — | — | — | — | — | SE 15 | WSW 3 | SSW 11 | SSW 13 | SSE 10 | ESE 12 | SE 12 | — | — | NE 9 | — |
| kJ | 2 | 3 | 14 | 3 | 3 | — | — | — | — | — | 8 | 4 | 22 | 34 | 19 | 14 | 6 | — | — | 3 | — |
Wind waves Height (m) Direction Period (s) | NW 4 | NW 4 | — | — | SE 4 | — | ENE 3 | NE 5 | NE 7 | NE 8 | N 4 | — | — | NE 4 | NW 3 | WSW 3 | SSW 14 | SSW 9 | SSW 10 | — | NNW 3 |
| kJ | 6 | 10 | — | — | 39 | — | 8 | 115 | 271 | 619 | 41 | — | — | 21 | 3 | 2 | 763 | 3216 | 3314 | — | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 26 | 0 | 0 | 162 | 30 | 0 | 206 | 93 | 4 | 136 | 0 | 0 | 0 | 26 | 94 | 30 | 118 | 65 | 4 | 0 |
Best forecast wave conditions in Canterbury | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
Are you planning a holiday in Canterbury? If you are looking for accommodation near Banks Peninsula - Magnet Bay, camping, hotels and holiday cottages in Canterbury, consider staying in Christchurch which is 37 km (23 miles) away.
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