Surf Forecasts:
Dunedin - St Clair surf forecast from 18 Jul 2026:
- Best quality surf: Saturday 18 Jul, 3PM (local time) - 7.5ft (2.3m), 18s period, S swell with offshore winds.
- Most powerful swell: Monday 20 Jul, 6AM (local time) - 8ft (2.5m), 18s period, S swell with 4,494 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 3PM (local time) - 7.5ft (2.3m), 18s period with S swell.
Best Forecast Surf Conditions for Dunedin - St Clair this week:
The surf forecast for Dunedin - St Clair over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jul 18) at 3PM. The primary swell is predicted to be 2.3m and 18s period with a secondary swell of 1.1m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Dunedin - St Clair in the next 16 days are 2.5m 18s and forecast to arrive on Monday (Jul 20) 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 1.1m 5s period and expected on Thursday (Jul 23) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Sat 18th Jul) | 7.5ft (2.3m) 18s |
| Best Surf | 3PM (Sat 18th Jul) | 7.5ft (2.3m) 18s |
| Most Powerful | 6AM (Mon 20th Jul) | 8ft (2.5m) 18s |
Table - best surf conditions forecast for Dunedin - St Clair over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Sat night. Very mild (max 14°C on Sat afternoon, min 6°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu night. Very mild (max 12°C on Tue afternoon, min 6°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | S 19 | S 18 | S 16 | S 15 | S 14 | S 18 | S 18 | S 16 | S 13 | S 12 | S 12 | S 12 | SSW 12 | SSW 12 | S 13 | SSW 12 | SSW 12 | SSW 14 | SSW 14 | SSW 16 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4348 | 3231 | 2027 | 1733 | 1525 | 3311 | 3845 | 2374 | 1127 | 485 | 322 | 180 | 217 | 224 | 81 | 29 | 15 | 41 | 36 | 198 | 186 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross | cross | cross-off | cross-off | glassy | cross-off | off | glassy | cross-off | off | cross-off | cross-off | off | glassy | cross | cross-off | cross-off | off |
High Tide | 7:20PM1.80m | 7:47AM1.73m | 8:16PM1.73m | 8:45AM1.69m | 9:11PM1.67m | 9:40AM1.65m | 10:04PM1.62m | 10:33AM1.63m | 10:55PM1.58m | 11:23AM1.62m | 11:44PM1.55m | 12:11PM1.62m | 00:32AM1.54m | ||||||||
Low Tide | 12:51PM0.10m | 1:21AM0.16m | 1:43PM0.17m | 2:12AM0.22m | 2:37PM0.26m | 3:04AM0.28m | 3:32PM0.33m | 3:58AM0.33m | 4:30PM0.39m | 4:54AM0.37m | 5:29PM0.41m | 5:50AM0.38m | 6:26PM0.42m | ||||||||
 |  |  |  | |  | | | | | |  | | |  | | |  | | | | |
 | 8:11 | — | — | 8:11 | — | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — | — | 8:07 | — | — | 8:07 | — | — |
 | — | 5:15 | — | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — | — | 5:21 | — | — | 5:22 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — |
Temp °C | 13 | 14 | 11 | 9 | 10 | 7 | 8 | 9 | 9 | 11 | 12 | 11 | 10 | 11 | 8 | 11 | 11 | 9 | 8 | 9 | 6 |
Feels °C | 8 | 11 | 5 | 4 | 5 | 3 | 5 | 7 | 5 | 7 | 10 | 7 | 7 | 7 | 4 | 8 | 9 | 4 | 4 | 5 | 2 |
Swell 1 Height (m) Direction Period (s) | S 19 | S 18 | S 16 | S 15 | S 14 | S 18 | S 18 | S 16 | S 13 | S 12 | S 12 | S 12 | SSW 12 | SSW 12 | S 9 | NE 5 | SSW 7 | ENE 6 | ENE 6 | SSW 16 | SSW 15 |
| kJ | 4348 | 3231 | 2027 | 1733 | 1525 | 3311 | 3845 | 2374 | 1127 | 485 | 322 | 180 | 217 | 224 | 38 | 29 | 11 | 25 | 23 | 198 | 186 |
Swell 2 Height (m) Direction Period (s) | SE 15 | SE 14 | SE 14 | ESE 13 | SE 13 | SE 12 | ESE 12 | SE 12 | ESE 12 | SE 12 | SE 11 | ESE 11 | ESE 11 | SE 11 | S 13 | SSW 8 | SSW 12 | SSW 14 | SSW 14 | ENE 6 | SE 13 |
| kJ | 631 | 463 | 363 | 309 | 245 | 157 | 98 | 71 | 55 | 34 | 32 | 12 | 12 | 5 | 81 | 21 | 15 | 41 | 36 | 14 | 27 |
Swell 3 Height (m) Direction Period (s) | S 24 | — | — | — | — | ESE 12 | — | — | — | NE 4 | NE 4 | NE 5 | NE 5 | — | SE 11 | SSW 12 | SE 11 | ESE 11 | SE 12 | SSW 5 | ENE 6 |
| kJ | 428 | — | — | — | — | 175 | — | — | — | 1 | 1 | 1 | 1 | — | 5 | 29 | 5 | 12 | 23 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | WSW 5 | — | — | — | — | — | NNE 4 | — | W 3 | — | NE 5 | NE 4 | NE 5 | ENE 6 | — | SSW 4 | SW 5 | SW 7 |
| kJ | — | — | — | 86 | — | — | — | — | — | 3 | — | 1 | — | 1 | 15 | 60 | 29 | — | 6 | 16 | 79 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 1 | 15 | 13 | 20 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 22 | 13 | 0 | 0 |
Best forecast wave conditions in Otago | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 16 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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