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Dunedin - St Clair Surf Forecast
/ Otago (35 surf breaks) /
Surf Forecasts:
Dunedin - St Clair surfForecast / Otago / New Zealand
12 Day Weather and Surf, issued 5 pm Tuesday 16 Sep 2025 NZST
Best Forecast Surf Conditions for Dunedin - St Clair this week:
The surf forecast for Dunedin - St Clair over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 17) at 12AM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.5m and 16s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Dunedin - St Clair in the next 12 days are 2.1m 12s and forecast to arrive on Friday (Sep 19) at 6PM. 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 7s period and expected on Sunday (Sep 21) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 17th Sep) | 3ft (0.9m) 9s |
| Best Surf | 3AM (Fri 19th Sep) | 8ft (2.5m) 9s |
| Most Powerful | 6PM (Fri 19th Sep) | 7ft (2.1m) 12s |
Table - best surf conditions forecast for Dunedin - St Clair over the next 12 days.
Short Range Forecast Light rain (total 7mm), mostly falling on Wed afternoon. Very mild (max 16°C on Wed morning, min 3°C on Thu night). Winds decreasing (fresh winds from the SW on Thu afternoon, calm by Fri morning). | Days 3-6 Weather Summary Some drizzle, heaviest during Sun afternoon. Very mild (max 14°C on Sat afternoon, min 5°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 17 | 9 | 9 | 9 | 9 | 12 | 15 | 9 | 10 | 11 | 12 | 13 | 13 | 12 | 15 | 15 | 14 | 14 | 14 | 14 | 16 | ||
Wave (?)Graph  | |||||||||||||||||||||||
| Energy (?) | 342 | 305 | 173 | 100 | 84 | 114 | 547 | 674 | 826 | 1357 | 1074 | 640 | 532 | 180 | 166 | 139 | 69 | 116 | 71 | 189 | 196 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross | cross | cross- off | cross | off | off | cross- off | off | off | cross- on | cross- off | cross- off | cross | cross- off | cross- off | ||
High Tide / height (m) | 11:43PM 1.65 | 12:15PM 1.76 | 12:38AM 1.68 | 1:07PM 1.78 | 1:29AM 1.70 | 1:57PM 1.78 | 2:18AM 1.72 | 2:43PM 1.77 | 3:04AM 1.72 | 3:28PM 1.74 | 3:48AM 1.70 | 4:10PM 1.70 | 4:31AM 1.67 | ||||||||||
Low Tide / height (m) | 5:27PM 0.28 | 5:50AM 0.23 | 6:32PM 0.26 | 6:53AM 0.20 | 7:29PM 0.23 | 7:48AM 0.17 | 8:19PM 0.20 | 8:38AM 0.16 | 9:04PM 0.19 | 9:23AM 0.16 | 9:46PM 0.19 | 10:05AM 0.18 | 10:26PM 0.21 | 10:45AM 0.21 | |||||||||
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||||
| Sunrise | - | - | 6:37 | - | - | 6:35 | - | - | 6:33 | - | - | 6:31 | - | - | 6:30 | - | - | 6:28 | - | - | 6:26 | ||
| Sunset | 6:25 | - | - | 6:28 | - | - | 6:29 | - | - | 6:30 | - | - | 6:30 | - | - | 6:32 | - | - | 6:34 | - | - | ||
 |  | |  |  |  |  |  | |  | | | | | | | | | |  | | |||
Rain (mm) | - | - | - | 3 | - | - | 3 | 1 | - | - | - | - | - | - | - | 1 | - | - | - | - | - | ||
| Temp. °C | 13 | 12 | 16 | 13 | 11 | 11 | 8 | 5 | 8 | 9 | 5 | 12 | 14 | 10 | 11 | 12 | 9 | 13 | 14 | 9 | 16 | ||
| Feels °C (?) | 9 | 9 | 12 | 9 | 9 | 4 | 1 | -3 | 5 | 2 | -1 | 8 | 9 | 6 | 8 | 10 | 5 | 11 | 10 | 5 | 11 | ||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Otago
Continuing clean conditions at Dunedin - St Clair (calm at Port Chalmers wx 13 km from Dunedin - St Clair). 0.8m 9s swell from the SSW with a 0.4m 15s groundswell from the S. 2 swells combining to make bigger set waves.
Actual: 27 min ago
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Information about the Dunedin - St Clair Surf forecast
The above surf forecast table for Dunedin - St Clair provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Dunedin - St Clair can be found by selecting the local surf guide option on the grey menu. Our Dunedin - St Clair 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 (Dunedin - St Clair) 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 Dunedin - St Clair 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.
Dunedin - St Clair is 5 km (3 miles) from Dunedin. If you plan a holiday in Otago, look for hotels and other accommodation in Dunedin. Dunedin has rooms for a wide range of budgets as well as car hire and transport links.
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