
Surf Forecasts:
Cunns surf forecast from 3 Sep 2026:
- Best quality surf: Saturday 5 Sep, 9PM (local time) - 7ft (2.1m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 3PM (local time) - 7ft (2.1m), 19s period, SW swell with 3,011 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 9PM (local time) - 7ft (2.1m), 14s period with SW swell.
Best Forecast Surf Conditions for Cunns this week:
The surf forecast for Cunns over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 05) at 9PM. The primary swell is predicted to be 2.1m and 14s period with a secondary swell of 0.3m and 20s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cunns in the next 16 days are 2.1m 19s and forecast to arrive on Wednesday (Sep 09) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Monday (Sep 07) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sat 5th Sep) | 7ft (2.1m) 14s |
| Best Surf | 9PM (Sat 5th Sep) | 7ft (2.1m) 14s |
| Most Powerful | 3PM (Wed 9th Sep) | 7ft (2.1m) 19s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, Rusty here, and I’m peelin’ back the layers on this one. Only Cunns is on the menu for the next 16 days, and it’s a spot that doesn’t fire all the time – inconsistent reef, but when it does, it’s worth the wait. Water temp is about normal for the season.
The first week kicks off Friday, September 4th, but it’s a washout. We got a 7ft SW swell with a 15-second period, but the wind is a nasty cross-onshore at 30 km/h, and it’s lumpy. The energy is 1958, but with that wind, it’s a no-go. Saturday the 5th is worse: 8ft to 10ft, and the wind is howlin’. Saturday afternoon might be just a little less bad, but it’s a cross-shore chop.
Finally, Sunday afternoon, September 6th, is the first real window. A 5ft SW swell, 14-second period, and the wind is a clean offshore from the ESE at 20 km/h. The energy is 1033 – moderate – but the shape will be good. This is the standout of the early run. It’s clean, but not huge, so it’s a good one for the experienced crew. Expect some company, as it gets crowded here sometimes.
Then we hit a flat spell. Monday the 7th and Tuesday the 8th drop to tiny 3ft to 5ft, all choppy. Wednesday the 9th to Friday the 11th is a cruel tease: the swell is 6ft to 7ft, and the period is a massive 19 seconds, but the wind is a near-gale to strong offshore at 45-50 km/h. The energy numbers are huge (2607 and 3186), but you’ll be pinned to the water tryin’ to paddle out. Clean, but brutal.
The next real gem is Saturday afternoon, September 12th. A 4ft SW swell, 16-second period, and a gentle breeze from the ENE – dead calm. The energy is 683, and it’s flagged as “expect very good surf conditions.” This is the second standout, and probably the best of the whole stretch. Tiny but perfect.
After that, it turns ugly again. Sunday the 13th and Monday the 14th, the wind swings onshore. Tuesday the 15th is a cross-shore mess. Wednesday the 16th is a full-on gale with 50 km/h winds – that’s a kiteboarder’s day, not a surfer’s.
Now, the final punch. Thursday, September 17th, we get a 10ft SW swell with an 18-second period, and the wind is offshore at 35 km/h. The energy is 4703 – that’s a big push. This is expert-only territory. It’s a long period groundswell, so it’ll be a bit walled up at a beach break, but Cunns being a reef will handle it. Friday the 18th and Saturday the 19th back off to 7ft to 8ft with lighter winds. This whole run from the 17th to the 19th is the big finish – a promise for the brave, but it’s far out, so don’t book your flight yet.
Best bets: Sunday afternoon, September 6th, and the glassy Saturday afternoon, September 12th. The big stuff on the 17th is for the heavy hitters only. There’s a long gap of junk from the 7th to the 11th, so pick your battles.
Rusty out.
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 25°C on Fri morning, min 10°C on Sat night). Winds decreasing (fresh winds from the WSW on Fri night, light winds from the SE by Sat night). | Days 5-7 Weather SummaryModerate rain (total 17mm), heaviest on Sun night. Very mild (max 15°C on Mon afternoon, min 11°C on Sun night). Winds increasing (moderate winds from the ESE on Mon night, strong winds from the SE by Wed morning). | ||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | ||||||||||||||
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) | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 13 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 19 | SW 19 | SW 18 |
Wave Graph | |||||||||||||||||||
1857 | 1958 | 2620 | 1053 | 2405 | 2843 | 1632 | 1244 | 1033 | 444 | 205 | 253 | 859 | 1267 | 943 | 710 | 2342 | 3011 | 2745 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-on | cross-on | cross-on | cross | off | cross-off | off | off | cross-off | off | off | cross-off | cross-off | cross-off | off | off | off |
High Tide | 2:56AM1.07m | 1:20PM0.80m | 3:04AM0.92m | 12:18PM0.85m | 2:38AM0.77m | 11:43AM0.99m | 1:29AM0.68m | 11:44AM1.13m | 00:44AM0.70m | 11:57AM1.23m | 00:28AM0.79m | 12:11PM1.28m | 00:26AM0.90m | ||||||
Low Tide | 8:45AM0.54m | 7:54PM0.11m | 7:58AM0.69m | 7:31PM0.13m | 6:09AM0.69m | 7:06PM0.13m | 5:24AM0.54m | 6:51PM0.12m | 5:29AM0.37m | 6:45PM0.11m | 5:45AM0.23m | 6:43PM0.10m | |||||||
— | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | |
6:22 | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:23 | — | — | 6:24 | — | — | 6:24 | — | |
mm | — | — | 1 | — | — | — | — | — | — | 6 | 3 | — | 4 | — | — | 3 | 1 | — | — |
Temp °C | 17 | 25 | 20 | 17 | 14 | 13 | 13 | 16 | 18 | 13 | 13 | 15 | 13 | 15 | 15 | 14 | 12 | 14 | 12 |
Feels °C | 13 | 21 | 14 | 13 | 7 | 8 | 10 | 12 | 13 | 7 | 6 | 9 | 9 | 12 | 11 | 8 | 2 | 4 | 2 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | SW 15 | — | SW 13 | SW 14 | SW 14 | SW 14 | SW 13 | S 7 | SW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 19 | SW 19 | SW 18 |
1857 | 1958 | 2620 | 1053 | — | 2843 | 1632 | 1244 | 1033 | 444 | 57 | 253 | 859 | 1267 | 943 | 710 | 2342 | 3011 | 2745 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 23 | SW 13 | SW 20 | SW 13 | — | — | SW 24 | S 8 | — | S 8 |
— | — | — | — | — | — | — | — | — | 21 | 205 | 202 | 199 | — | — | 89 | 1 | — | 63 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SW 21 | SSW 7 | — | — | — | — | — | — | S 8 |
— | — | — | — | — | — | — | — | — | — | 71 | 16 | — | — | — | — | — | — | 45 | |
Wind waves Height (m) Direction Period (s) | ESE 3 | — | SW 15 | WSW 4 | SW 14 | SW 13 | — | — | — | SSE 5 | ESE 5 | ESE 4 | SE 7 | SSE 7 | SSE 6 | SSE 8 | SSE 8 | SSE 8 | E 4 |
3 | — | 1761 | 18 | 2405 | 1730 | — | — | — | 67 | 76 | 58 | 111 | 142 | 95 | 384 | 264 | 175 | 30 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 648 | 564 | 1165 | 1035 | 1197 | 0 | 0 | 0 | 0 | 132 | 132 | 0 | 0 | 489 | 491 | 1591 | 1560 | 1048 |
Best forecast wave conditions in Nullarbor | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Cunns Surf forecast
The above surf forecast table for Cunns provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cunns can be found by selecting the local surf guide option on the grey menu. Our Cunns 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 (Cunns) 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 Cunns 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.
Are you planning a holiday in Nullarbor? If you are looking for accommodation near Cunns, camping, hotels and holiday cottages in Nullarbor, consider staying in Thevenard which is 64 km (40 miles) away.










