
Surf Forecasts:
Cobden Breakwater surf forecast from 5 Sep 2026:
- Best quality surf: Sunday 6 Sep, 3AM (local time) - 11ft (3.5m), 16s period, W swell with cross-onshore winds.
- Most powerful swell: Friday 11 Sep, 3PM (local time) - 16ft (5.0m), 18s period, W swell with 14,212 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 3AM (local time) - 11ft (3.5m), 16s period with W 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 Sunday (Sep 06) at 3AM. The primary swell is predicted to be 3.5m and 16s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Cobden Breakwater in the next 16 days are 5.0m 18s and forecast to arrive on Friday (Sep 11) 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 0.6m 3s period and expected on Monday (Sep 07) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 6th Sep) | 11ft (3.5m) 16s |
| Best Surf | 3AM (Sun 6th Sep) | 11ft (3.5m) 16s |
| Most Powerful | 3PM (Fri 11th Sep) | 16ft (5.0m) 18s |
Table - best surf conditions forecast for Cobden Breakwater over the next 16 days.
The Lowdown
G’day, it’s Rusty here.
Alright, let’s be straight with you. The next few days are pretty much a write-off for a proper paddle at Cobden Breakwater. We’ve got a big pulse of west swell pushing through, with the energy readings right up there – strong to very strong stuff (5995 to 6395 in the combined energy department). Saturday morning shows a solid 13ft of west swell with a 14-second period, but that’s just too much muscle for this spot. The wind’s coming out of the WNW at 6 mph, cross-onshore, and it’s already messy. And it gets worse by the afternoon with the breeze jumping to 19 mph and the swell holding at 13ft. This is not a day for a surfboard; you’d be looking at a kite if anything.
The energy drops a touch for Sunday but it’s still well overhead at 10ft, and the wind swings around to the NNW, putting a bad cross-chop on it. The period’s a long 16 seconds, which at a breakwater setup can sometimes line up, but with that wind, it’s just going to be lumpy. An 8ft swell in the afternoon brings the period down to 16 seconds, but it’s still not clean. Monday eases off – 5ft in the morning with a cross-off ESE breeze and clean conditions, and the wave comment says it’s marginal. The combined energy drops to 1262, so it’s moderate at best, but honestly, it’s not going to have any push to it. The period is a touch shorter at 14 seconds.
Things get interesting, though, as we move into the middle of next week. There’s a window on Tuesday the 8th and Wednesday the 9th where we get some smaller, cleaner surf. Tuesday morning’s a paddly 4ft from the NNW with a short 8-second period, and a light ESE breeze. The afternoon is better – glassy conditions with the wind dropping to nothing (3 mph) and a 4ft west swell. But the energy is weak (421), so it’s not going to be epic. Wednesday morning is similar, glassy with a 4ft WSW swell, but again, the period is a short 8 seconds and the energy is weak (412).
From Thursday the 10th, the swell starts to build again fast. 10ft in the morning, and then by Friday the 11th we’re looking at a monster 15ft to 16ft of west swell with energy readings exploding to over 12000. The period is a very long 18 seconds. That’s a powerful groundswell, but it’s far too big for this place. The wind is howling onshore by the afternoon and it’s just a washing machine. That whole weekend and into Monday the 14th, it’s big, raw, and unsurfable here.
Now, here’s the light at the end of the tunnel. Monday the 14th brings a drop to 8ft with a clean cross-off ESE wind and clear skies. The comment says “excellent surf conditions for experienced surfers.” That’s the first real standout. The energy is still moderate (2655), but the wind is right and the swell is west. For the more experienced crew, that morning is the pick of the first week.
Tuesday the 15th is similar – 8ft, glassy, clean, and another good option for the advanced surfers, though the energy is a bit lower (2380). But then it gets blown out again mid-week.
The real highlight, the one to circle on the calendar, is Saturday the 19th. There’s a massive 16ft west swell with a 16-second period – energy readings are off the charts at 12776. It’s huge, but the early morning has light ESE winds and clean conditions. The forecast comment says the wind and tide are favorable, but that it’s too big for this break. This is only for the absolute experts, and even then, you’d need to know the place well. The swell direction is true west, which is the optimum for this spot, but 16ft is a different beast. The Sunday the 20th morning looks like the better, more manageable standout – 10ft of west swell, a 14-second period, light easterly cross-off wind, and clean. Energy’s at 3376, which is solid, and it’s a much more reasonable size for a good session.
Water temp is sitting at 55°, which is about average for this time of year, so a decent steamer is a must.
So, keep the hopes up for Monday the 14th and Tuesday the 15th if you're a charger, and definitely set the alarm for Sunday the 20th. That’s the one that has the most going for it.
Rusty.
Short Range ForecastHeavy rain (total 135mm), heaviest during Sun afternoon. Very mild (max 13°C on Sun morning, min 7°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 27mm), heaviest during Wed night. Very mild (max 12°C on Wed afternoon, min 7°C on Thu morning). Winds increasing (calm on Wed morning, fresh winds from the SW by Thu afternoon). | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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) | W 14 | W 15 | W 16 | W 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | NNW 8 | W 10 | W 10 | WSW 8 | W 11 | W 11 | W 8 | W 15 | W 19 | W 18 | W 18 | W 12 |
Wave Graph | |||||||||||||||||||||
5875 | 6395 | 7050 | 4520 | 2979 | 1708 | 822 | 500 | 424 | 222 | 250 | 188 | 212 | 894 | 507 | 1198 | 3818 | 8509 | 12818 | 14212 | 10202 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross | off | cross-off | cross-off | off | cross-off | glassy | cross-off | glassy | on | cross-on | cross-on | on | on | on | on | on |
High Tide | 4:56PM2.74m | 5:44AM2.74m | 6:22PM2.77m | 7:02AM2.80m | 7:37PM2.91m | 8:11AM2.94m | 8:39PM3.09m | 9:07AM3.09m | 9:29PM3.26m | 9:56AM3.21m | 10:14PM3.38m | 10:38AM3.29m | 10:56PM3.42m | ||||||||
Low Tide | 10:34AM1.20m | 11:22PM1.18m | 12:00PM1.23m | 00:46AM1.10m | 1:21PM1.12m | 1:57AM0.94m | 2:26PM0.94m | 2:54AM0.74m | 3:19PM0.74m | 3:44AM0.57m | 4:05PM0.58m | 4:28AM0.46m | 4:46PM0.49m | ||||||||
6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:46 | — | — | 6:43 | — | — | |
— | 6:13 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:17 | — | — | 6:19 | — | |
mm | 2 | 3 | 18 | 12 | 42 | 45 | 9 | 2 | 2 | 1 | — | — | — | — | 13 | 5 | 3 | 5 | 2 | 2 | 4 |
Temp °C | 12 | 12 | 12 | 13 | 13 | 11 | 8 | 9 | 8 | 10 | 11 | 10 | 11 | 12 | 10 | 10 | 10 | 8 | 10 | 11 | 11 |
Feels °C | 7 | 6 | 7 | 9 | 11 | 10 | 3 | 5 | 4 | 8 | 10 | 9 | 10 | 9 | 7 | 3 | 2 | 1 | 7 | 5 | 5 |
Swell 1 Height (m) Direction Period (s) | W 14 | — | — | W 16 | WSW 16 | NW 9 | NW 9 | WSW 14 | NNW 8 | NNW 8 | W 10 | W 10 | WSW 8 | W 11 | W 11 | WSW 16 | W 15 | W 19 | W 18 | — | — |
5875 | — | — | 4520 | 2979 | 763 | 440 | 500 | 302 | 222 | 250 | 188 | 212 | 894 | 507 | 849 | 3818 | 8509 | 12818 | — | — | |
Swell 2 Height (m) Direction Period (s) | NNW 8 | — | — | NW 9 | — | WSW 15 | WSW 14 | NW 9 | WSW 13 | WSW 12 | NNW 9 | NNW 8 | W 13 | WSW 19 | W 18 | — | W 20 | — | — | — | — |
120 | — | — | 502 | — | 1708 | 822 | 193 | 424 | 145 | 165 | 47 | 173 | 119 | 222 | — | 380 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | N 8 | W 20 | WSW 10 | W 17 | WNW 9 | NNW 8 | NW 8 | NNW 8 | — | — | — | — | — | — |
— | — | — | — | — | — | — | 117 | 7 | 83 | 6 | 28 | 27 | 17 | 6 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | W 15 | W 16 | — | NW 8 | — | ESE 3 | E 3 | — | — | — | — | — | — | — | W 8 | — | — | — | W 18 | W 12 |
— | 6395 | 7050 | — | 754 | — | 5 | 5 | — | — | — | — | — | — | — | 1198 | — | — | — | 14212 | 10202 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 169 | 190 | 190 | 190 | 197 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 48 | 85 | 0 | 153 | 153 | 153 | 156 | 153 |
Best forecast wave conditions in West Coast South Island | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.










