Surf Forecasts:
Cobden Breakwater surf forecast from 16 Aug 2026:
- Best quality surf: Sunday 23 Aug, 9PM (local time) - 11ft (3.5m), 9s period, WNW swell with onshore winds.
- Most powerful swell: Monday 24 Aug, 3AM (local time) - 13ft (4.0m), 14s period, W swell with 6,996 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 6AM (local time) - 3.5ft (1.1m), 15s period with WSW swell.
Best Forecast Surf Conditions for Cobden Breakwater this week:
The surf forecast for Cobden Breakwater over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 6AM. The primary swell is predicted to be 1.1m and 15s period with a secondary swell of 1.1m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cobden Breakwater in the next 16 days are 4.0m 14s and forecast to arrive on Monday (Aug 24) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Wednesday (Aug 19) at 12AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 17th Aug) | 3.5ft (1.1m) 15s |
| Best Surf | 9PM (Sun 23rd Aug) | 11ft (3.5m) 9s |
| Most Powerful | 3AM (Mon 24th Aug) | 13ft (4.0m) 14s |
Table - best surf conditions forecast for Cobden Breakwater over the next 16 days.
The Lowdown
Alright folks, Rusty here. We’ve got a mixed bag coming our way for the next couple of weeks, so let’s get into it.
The week starts off with some promise at Cobden Breakwater. Monday morning the 17th of August is looking clean with a 4ft swell from the WSW, period a solid 14 seconds, and light cross-offshore breezes from the east. That’s a nice combo. The wave energy is moderate (724), so there’s enough push to get into something fun. The water temp is about average for this time of year. As we move into Tuesday morning the 18th, the swell picks up to 5ft, keeps that clean cross-off wind, and the period drops to 10 seconds – still plenty of fun, moderate energy (663). Wednesday morning the 19th is another standout early session: 4ft, but with a very long 16-second period, making for some proper groundswell lines. Energy is bumping up (978). That long period will really make this breaky reef setup shine, but it might be a bit straight for a beachbreak if this were one; here it should be fine.
Thursday morning the 20th keeps the clean, cross-off theme going with 4ft at 14 seconds (507). Then Friday morning the 21st sees the wind go light offshore from the ENE, with 3ft of swell from the W at 14 seconds. Clean little session (423). That’s a solid run of mornings.
Now, things get a bit wild. Saturday the 22nd turns messy with rain showers and 6ft waves, but the onshore wind from the NW chops it up. Sunday the 23rd gets downright nasty – the wind swings strong onshore from the WSW, and the swell jumps to 8ft on Sunday morning and 12ft by the afternoon. That’s too big for beginners for sure, and the wind is making it a washing machine. The wave energy is strong (1466 and 1572). Monday the 24th is even bigger: 12ft of swell from the west with a very long 15-second period, but heavy cross-onshore winds from the NW up to 19 mph make it a total mess. The energy is very strong (over 5700). Tuesday the 25th is pumping 15ft of west swell – way too big for this spot, even for experts, with onshore winds. A kite surfer would have a field day, but for a paddle surfer, it’s a hard pass.
We get a glimmer of hope on Wednesday morning the 26th of August. The swell drops to 10ft from the west, period 14 seconds, and the wind turns light offshore from the east. For experienced surfers only, this is excellent – big, clean, powerful waves (2876 energy). Thursday morning the 27th drops to a more manageable 4ft from the west with light offshore winds (488). Friday the 28th is another clean morning, 5ft west swell at 12 seconds with cross-offshore ESE winds (594). That’s a nice little window.
The first week of September opens with a real standout: Tuesday morning the 1st of September. Glassy conditions, light offshore sea breeze, and a clean 10ft swell coming from the NW. That’s a big, clean groundswell with moderate energy (1630) – again, strictly for the experienced. The rest of the second week looks smaller and more marginal, with light winds but less size.
Best bet overall is Monday the 17th of August morning for a fun, clean start, and Wednesday the 26th of August morning for the experienced crew looking for something big and clean. If you’re a beginner, stick to the smaller, clean mornings around the 20th or 27th.
Stay safe out there.
Rusty
Short Range ForecastMostly dry. Very mild (max 12°C on Wed afternoon, min 3°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Fri night. Very mild (max 13°C on Sat morning, min 8°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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) | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 10 | WSW 10 | WSW 10 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | W 14 | WSW 14 | WSW 14 | W 11 | WNW 10 | W 8 |
Wave Graph | |||||||||||||||||||
1460 | 536 | 811 | 646 | 492 | 473 | 473 | 730 | 666 | 752 | 507 | 395 | 384 | 423 | 341 | 210 | 736 | 614 | 825 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross-off | cross-off | on | cross-off | cross-off | cross-on | cross-off | cross-off | cross-on | off | off | cross-on | cross | cross-on | cross-on | cross |
High Tide | 1:23AM3.24m | 1:44PM3.08m | 2:05AM3.05m | 2:24PM2.92m | 2:49AM2.87m | 3:08PM2.77m | 3:41AM2.70m | 4:03PM2.63m | 4:45AM2.59m | 5:12PM2.55m | 5:55AM2.55m | 6:28PM2.55m | |||||||
Low Tide | 7:37AM0.70m | 7:53PM0.81m | 8:18AM0.89m | 8:35PM1.00m | 9:01AM1.09m | 9:24PM1.20m | 9:50AM1.28m | 10:23PM1.36m | 10:53AM1.43m | 11:36PM1.46m | 12:08PM1.50m | 00:50AM1.47m | |||||||
— | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | |
— | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 2 | 8 |
Temp °C | 6 | 8 | 9 | 5 | 10 | 11 | 9 | 11 | 12 | 9 | 11 | 11 | 9 | 9 | 12 | 12 | 13 | 13 | 13 |
Feels °C | 1 | 5 | 6 | 2 | 8 | 8 | 5 | 9 | 9 | 6 | 10 | 9 | 7 | 7 | 9 | 8 | 10 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 10 | WSW 10 | WSW 10 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | W 14 | WSW 14 | WSW 14 | W 11 | W 13 | WSW 16 |
1460 | 536 | 811 | 646 | 492 | 473 | 473 | 730 | 666 | 752 | 507 | 395 | 384 | 423 | 341 | 210 | 736 | 89 | 89 | |
Swell 2 Height (m) Direction Period (s) | — | W 10 | — | W 18 | W 14 | W 14 | WSW 17 | WSW 10 | WSW 10 | — | — | N 4 | — | — | — | WNW 4 | WSW 13 | WSW 20 | WSW 13 |
— | 188 | — | 25 | 146 | 148 | 300 | 248 | 201 | — | — | 1 | — | — | — | 5 | 60 | 75 | 54 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 18 | — | WSW 13 | — | — | — | — | — | — | — | — | W 20 | W 21 | — | W 19 |
— | — | — | — | 25 | — | 55 | — | — | — | — | — | — | — | — | 8 | 34 | — | 118 | |
Wind waves Height (m) Direction Period (s) | ESE 3 | — | — | — | — | — | ESE 3 | — | — | — | NNE 4 | — | — | — | — | — | — | WNW 10 | W 8 |
1 | — | — | — | — | — | 1 | — | — | — | 2 | — | — | — | — | — | — | 614 | 825 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 12 | 0 | 0 | 48 | 0 | 0 | 38 | 0 | 0 | 38 | 0 | 0 | 77 | 38 | 190 | 190 | 169 |
Best forecast wave conditions in West Coast South Island | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
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Information about the Cobden Breakwater Surf forecast
The above surf forecast table for Cobden Breakwater provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cobden Breakwater can be found by selecting the local surf guide option on the grey menu. Our Cobden Breakwater 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 (Cobden Breakwater) 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 Cobden Breakwater 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.
Cobden Breakwater is 172 km (107 miles) from the city of Christchurch. If you plan a holiday in West Coast South Island, look for hotels and other accommodation in Christchurch. Christchurch has rooms for a wide range of budgets as well as car hire and transport links.











