
Surf Forecasts:
Cobden Breakwater surf forecast from 20 Jul 2026:
- Best quality surf: Saturday 25 Jul, 9AM (local time) - 15ft (4.5m), 15s period, W swell with cross-onshore winds.
- Most powerful swell: Saturday 25 Jul, 9AM (local time) - 15ft (4.5m), 15s period, W swell with 9,417 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 12AM (local time) - 4ft (1.2m), 13s 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 Tuesday (Jul 21) at 12AM. The primary swell is predicted to be 1.2m and 13s period with a secondary swell of 0.4m and 11s. 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 4.5m 15s and forecast to arrive on Saturday (Jul 25) at 9AM. 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 10s period and expected on Wednesday (Jul 22) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Tue 21st Jul) | 4ft (1.2m) 13s |
| Best Surf | 9AM (Sat 25th Jul) | 15ft (4.5m) 15s |
| Most Powerful | 9AM (Sat 25th Jul) | 15ft (4.5m) 15s |
Table - best surf conditions forecast for Cobden Breakwater over the next 16 days.
The Lowdown
Alright folks, this is Rusty comin' at ya from the coast. We've got a solid 16-day window ahead, but it's a bit of a mixed bag. Let's break it down.
We're focusing on Cobden Breakwater for this stretch. The water temp is sittin' right around 55°F, which is dead average for this time of year, so nothing crazy there.
The action kicks off this Monday, the 20th of July, with a nice little pulse. Monday afternoon sees a 4ft swell from the WSW, with a period of 13 seconds, and combined energy of (627). The wind is glassy out of the NE at 3 mph. That's a recipe for some clean, fun waves. It's not a monster, but it's a real nice start to the week.
Tuesday, the 21st, is a two-session day. Morning brings a 3ft W swell at 13 seconds and a cross-offshore breeze from the east. It's clean. By Tuesday afternoon, the wind drops to glassy, dead calm, and the swell ticks down a touch to 3ft from the WSW. Honestly, that afternoon glass-off is a treat.
Wednesday the 22nd holds steady. Morning has a 4ft W swell and a light cross-off from the east, keeping it clean. The afternoon bumps up to 4ft from the west with a light cross-off. It's not the biggest, but it's clean and rideable.
Now, Thursday the 23rd of July is a standout. The morning is firing: a 5ft W swell with a solid 13-second period, combined energy of (683), and a clean offshore wind from the NE at 6 mph. This is the best session of the first week. The water's clean, the swell has some push, and those offshore winds will have the lines looking great. The afternoon gets a bit messy with a cross-shore, so get it in the morning if you can.
The end of the week turns gnarly. Friday the 24th sees a jump in size, but it's a bit of a mess. 8ft to 6ft, but with a short 8-second period and strong cross to cross-onshore winds. It's gonna be a choppy, lumpy mess. Not for the paddle surfer, this looks more like a kiteboarding day.
The Big Swell Window (and the Caveat)
From Saturday the 25th of July right through the first few days of August, the ocean is going to be absolutely thumping. We're talking solid 10ft to 16ft groundswell, with periods hitting 14 to 16 seconds. The combined energy readings are massive – think four-digit numbers like (9417) and (8202). This is serious, powerful, long-period energy.
Now, here's the deal for Cobden Breakwater: it's a breakwater, and a swell this size is going to be too big for this spot. The data says it's too big. So, while the ocean is pumping, this particular break is not the place to be unless you are an absolute expert hunting for a very specific, critical moment. The conditions are glassy or clean on some of those days, like the 25th afternoon or the 26th afternoon, but the sheer size makes it a no-go for most.
There is one exception: Thursday the 30th of July. The afternoon session looks exceptional. A 10ft WNW swell at 13 seconds, combined energy of (5331), with glassy, dead-calm conditions from the SSW. This is a moment for expert surfers only. The wave is huge, but the glassy conditions at a breakwater could create a truly special, if terrifying, wave. This is the big one for the crew who know what they're doing.
The first week of August sees the swell finally start to ease, but it's still big. Sunday the 2nd of August has a 12ft W swell with glassy conditions in the morning, again too big for the breakwater. By Monday the 3rd and Tuesday the 4th, we're still looking at 8ft to 13ft swells, but with clean offshore winds. Tuesday the 4th of August is a real highlight for the experts: a 8ft W swell, 14-second period, with a clean offshore wind from the east. This is a big, powerful, but clean window for the skilled crew.
The Bottom Line
The best all-round session for the average surfer is Thursday, 23rd of July. That 5ft WSW swell with the offshore wind is pure gold. For the expert looking for a big, clean, and memorable session, Thursday, 30th of July afternoon is the standout, but it's a beast. The rest of the time is either too small for a few days, or too big and messy for this particular break.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Wed morning. Very mild (max 12°C on Mon afternoon, min 8°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 65mm), heaviest during Thu night. Very mild (max 13°C on Thu afternoon, min 5°C on Sat night). Mainly strong winds. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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) | WSW 13 | WSW 13 | W 13 | WSW 12 | WSW 12 | W 10 | W 10 | WSW 13 | W 13 | W 13 | NNW 7 | WNW 8 | NW 8 | W 9 | W 15 | W 16 | W 14 | W 14 | W 13 | W 13 |
Wave Graph | ||||||||||||||||||||
627 | 507 | 334 | 244 | 142 | 240 | 273 | 700 | 683 | 640 | 376 | 714 | 438 | 3467 | 9417 | 8202 | 5738 | 3691 | 2964 | 1729 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | glassy | glassy | cross-off | cross-off | off | off | cross | cross | cross | cross-on | on | cross-on | cross-off | off | cross | glassy | glassy |
High Tide | 3:10PM2.95m | 3:36AM2.95m | 4:01PM2.81m | 4:32AM2.80m | 4:57PM2.70m | 5:33AM2.71m | 6:01PM2.66m | 6:36AM2.69m | 7:06PM2.69m | 7:37AM2.74m | 8:07PM2.77m | 8:32AM2.83m | 8:58PM2.89m | |||||||
Low Tide | 9:20PM1.06m | 9:50AM1.12m | 10:13PM1.23m | 10:43AM1.29m | 11:14PM1.37m | 11:43AM1.41m | 00:20AM1.44m | 12:49PM1.46m | 1:25AM1.45m | 1:53PM1.45m | 2:22AM1.40m | 2:49PM1.37m | ||||||||
— | — | 7:56 | — | — | 7:54 | — | — | 7:54 | — | — | 7:54 | — | — | 7:52 | — | — | 7:52 | — | — | |
5:25 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | |
mm | — | — | — | — | — | 4 | — | 1 | 1 | 3 | 25 | 9 | 6 | 12 | — | 3 | 7 | — | — | — |
Temp °C | 12 | 10 | 9 | 11 | 9 | 10 | 12 | 10 | 11 | 13 | 12 | 12 | 10 | 9 | 8 | 9 | 7 | 9 | 10 | 7 |
Feels °C | 11 | 8 | 7 | 10 | 6 | 8 | 11 | 8 | 8 | 9 | 8 | 8 | 6 | 5 | 5 | 5 | 4 | 6 | 7 | 5 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 13 | W 13 | WSW 12 | W 5 | W 10 | W 10 | WSW 13 | W 13 | W 13 | W 8 | WSW 12 | NW 8 | — | W 15 | W 16 | W 14 | W 14 | W 13 | W 13 |
627 | 507 | 334 | 244 | 22 | 240 | 273 | 700 | 683 | 640 | 346 | 202 | 438 | — | 9417 | 8202 | 5738 | 3691 | 2964 | 1729 | |
Swell 2 Height (m) Direction Period (s) | N 11 | NNW 11 | NNW 11 | NNW 10 | WSW 12 | WSW 15 | WSW 13 | N 10 | N 8 | N 10 | W 13 | W 19 | WSW 12 | — | — | — | — | — | — | — |
61 | 38 | 38 | 37 | 142 | 42 | 125 | 7 | 5 | 2 | 161 | 30 | 379 | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | N 5 | N 4 | W 19 | W 18 | NNW 10 | N 10 | N 10 | — | N 10 | — | — | — | W 16 | — | — | — | — | — | — | — |
8 | 3 | 27 | 24 | 20 | 17 | 17 | — | 2 | — | — | — | 260 | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | NNE 4 | — | — | — | — | — | — | N 8 | NNW 7 | WNW 8 | — | W 9 | — | — | — | — | — | — |
— | — | 1 | — | — | — | — | — | — | 5 | 376 | 714 | — | 3467 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 246 | 307 | 210 | 122 | 169 | 0 | 7 | 0 | 0 | 0 | 0 |
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.










