Surf Forecasts:
Cowries surf forecast from 13 Aug 2026:
- Best quality surf: Saturday 15 Aug, 1AM (local time) - 4ft (1.2m), 9s period, S swell with offshore winds.
- Most powerful swell: Saturday 15 Aug, 1PM (local time) - 5ft (1.6m), 7s period, S swell with 255 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 7PM (local time) - 4ft (1.2m), 8s period with S swell.
Best Forecast Surf Conditions for Cowries this week:
The surf forecast for Cowries over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 13) at 7PM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.4m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cowries in the next 16 days are 1.6m 7s and forecast to arrive on Saturday (Aug 15) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Aug 20) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Thu 13th Aug) | 4ft (1.2m) 8s |
| Best Surf | 1AM (Sat 15th Aug) | 4ft (1.2m) 9s |
| Most Powerful | 1PM (Sat 15th Aug) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for Cowries over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s cut straight to it. The next 16 days are a real mixed bag for Cowries. The opening stretch, from the 13th through the 26th, is mostly small and pretty average. There’s a bit of push at times, but the swell direction is all over the shop and the energy is weak to moderate at best. It’s not going to be flat, but it’s going to be a grind. The one standout in the whole window is right at the tail end, on the 28th, when a proper pulse of south swell lines up. That’s the one to circle on the calendar. Outside of that, you’re looking at a lot of knee-to-waist-high slop with a few better moments.
Right, let’s walk through it day by day.
Thursday the 13th kicks off with a clean, surfable 4ft south swell, 9-second period. Combined energy is weak to moderate at 221. Wind is light offshore, so it’ll be tidy, but it’s nothing to get too excited about. The water temp is 64°F, which is about average for this time of year, so you won’t need the thickest suit, but it’s not warm either.
Friday the 14th is glassy in the morning with 3ft on tap, but the period drops to 8 seconds. It’s surfable, but ordinary. The afternoon turns cross-on and a bit lumpy.
The weekend gets a little more size but loses the quality. Saturday the 15th sees 5ft with a cross-off wind that keeps it clean-ish, but the period is a weak 7 seconds. Same story for Sunday the 16th, with 5ft in the morning, but it’s a short-period, cross-shore mess. It’s peaky, but not in a good way. I’d rather wait for the tide to do something interesting.
From the 17th through the 26th, it’s a long, drawn-out stretch of small surf. There are a couple of mornings with glassy conditions, like Tuesday the 18th and Wednesday the 19th, with 3ft and 4ft respectively, but the swell is coming from the east-southeast with periods of just 6 seconds. That’s pure windswell and it’s going to be soft and gutless. The combined energy drops off a cliff during this stretch, dipping below 100 and even into the 30s and 40s. There’s a little bump on the 24th with 3ft and a 9-second period, and the wind is offshore, so it’ll be clean, but it’s tiny. This is a waiting game. A lot of paddling for not a lot of love.
Then, just when you think it’s a dead loss, the 27th rolls in. A strong breeze from the south-west arrives, and the swell jumps up to 4ft with a 9-second period. It’s clean due to the cross-off wind, but the energy is getting serious at 307. It’s still a poor call for quality, though.
The real standout is Friday the 28th. This is the one. The swell builds to 5ft with a south direction and a longer 11-second period. The combined energy jumps to a solid 642, which is strong, and the wind, while fresh and cross-off, leaves it clean. This is proper groundswell energy hitting the reef and point. The period is up, the size is there, and it’s coming from the south, which is the optimum direction for Cowries. This is the day. The wind is a bit fresh but offshore enough to hold it together. Expect some proper sets and a lot more power than anything we’ve seen in the previous two weeks. It’s a long-range call, so don’t book the time off just yet, but this one has real potential. After that, the energy eases off on the afternoon, but the morning is the window.
So, bottom line: for the next two weeks, you’re chasing small, clean leftovers. If you’re a beginner, the lack of size is your friend, but for the rest of us, it’s a fight for a mediocre wave. The only day that gets the blood pumping is Friday the 28th, and that’s the one to keep an eye on. It’s a long way out, but it’s got the ingredients.
Rusty out.
Short Range ForecastLight rain (total 9mm), mostly falling on Fri night. Very mild (max 16°C on Thu afternoon, min 10°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 14mm), heaviest on Mon night. Very mild (max 16°C on Sun afternoon, min 13°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
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 10 | S 8 | S 8 | SSE 7 | S 9 | SSE 7 | S 7 | S 6 | S 8 | ESE 6 | S 10 | S 9 | ESE 7 | ESE 6 | S 11 | ESE 6 | SE 7 | SE 7 | ESE 7 | ESE 7 |
Wave Graph | ||||||||||||||||||||
267 | 90 | 145 | 86 | 225 | 197 | 231 | 104 | 68 | 87 | 138 | 85 | 68 | 99 | 57 | 71 | 105 | 100 | 99 | 79 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | glassy | on | off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross | cross-on | on | cross | cross-on | glassy | glassy | cross-on | cross-off |
High Tide | 8:37PM1.71m | 9:20AM1.28m | 9:22PM1.63m | 10:02AM1.31m | 10:05PM1.50m | 10:43AM1.33m | 10:48PM1.35m | 11:25AM1.33m | 11:33PM1.19m | 12:09PM1.31m | 00:20AM1.05m | 12:57PM1.28m | 1:17AM0.93m | |||||||
Low Tide | 3:16AM-0.02m | 3:04PM0.21m | 3:54AM0.03m | 3:53PM0.23m | 4:30AM0.11m | 4:43PM0.29m | 5:05AM0.20m | 5:35PM0.35m | 5:40AM0.30m | 6:32PM0.42m | 6:17AM0.40m | 7:36PM0.47m | ||||||||
— | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | |
5:22 | — | — | 5:23 | — | — | 5:24 | — | — | 5:24 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | |
mm | — | — | — | — | 4 | 2 | — | 2 | 1 | — | 2 | — | 1 | 7 | — | 1 | 3 | — | — | — |
Temp °C | 16 | 12 | 16 | 15 | 14 | 14 | 15 | 13 | 15 | 16 | 14 | 16 | 16 | 14 | 16 | 15 | 14 | 16 | 16 | 14 |
Feels °C | 13 | 8 | 13 | 12 | 14 | 11 | 11 | 11 | 11 | 13 | 12 | 13 | 13 | 12 | 13 | 13 | 12 | 14 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 8 | S 8 | SSE 7 | SSE 9 | ENE 9 | ENE 9 | S 6 | S 8 | S 6 | S 10 | ESE 6 | S 9 | ESE 6 | ESE 6 | ESE 6 | SE 7 | SE 7 | ESE 7 | ESE 7 |
267 | 90 | 145 | 86 | 135 | 17 | 17 | 104 | 68 | 52 | 138 | 78 | 54 | 99 | 55 | 71 | 105 | 100 | 99 | 79 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | SSE 10 | ENE 10 | ENE 10 | ENE 9 | SSE 19 | SSE 18 | SSE 18 | SSE 6 | ENE 10 | E 10 | S 9 | ENE 8 | S 8 | S 11 | S 11 | ESE 11 | ESE 10 | E 9 | ESE 8 |
29 | 35 | 18 | 18 | 17 | 36 | 32 | 61 | 22 | 10 | 8 | 85 | 14 | 32 | 57 | 35 | 41 | 37 | 41 | 24 | |
Swell 3 Height (m) Direction Period (s) | S 19 | ENE 9 | SSE 17 | SSE 16 | SE 9 | SE 8 | S 14 | ENE 10 | SSE 18 | SSE 18 | SSE 17 | SSW 13 | S 12 | E 10 | SE 9 | ESE 13 | S 10 | S 8 | S 8 | S 8 |
7 | 29 | 29 | 24 | 3 | 3 | 4 | 9 | 60 | 31 | 28 | 35 | 27 | 7 | 13 | 32 | 7 | 13 | 5 | 1 | |
Wind waves Height (m) Direction Period (s) | — | W 3 | — | — | S 9 | SSE 7 | S 7 | — | ESE 6 | ESE 6 | ESE 6 | — | ESE 7 | ESE 6 | — | — | — | — | ENE 6 | NNW 3 |
— | 1 | — | — | 225 | 197 | 231 | — | 53 | 87 | 75 | — | 68 | 90 | — | — | — | — | 27 | 4 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 299 | 0 | 0 | 158 | 0 | 2 | 19 | 0 | 10 | 19 | 24 | 19 | 69 | 66 | 10 | 18 | 0 | 0 | 22 | 0 |
Best forecast wave conditions in Illawarra | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
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Information about the Cowries Surf forecast
The above surf forecast table for Cowries provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cowries can be found by selecting the local surf guide option on the grey menu. Our Cowries 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 (Cowries) 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 Cowries 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.
Cowries is 10 km (6 miles) from the city of Port Kembla. If you plan a holiday in Illawarra, look for hotels and other accommodation in Port Kembla. Port Kembla has rooms for a wide range of budgets as well as car hire and transport links.











