Surf Forecasts:
Cunns surf forecast from 17 Jul 2026:
- Best quality surf: Thursday 23 Jul, 3PM (local time) - 5ft (1.6m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 23 Jul, 6AM (local time) - 6ft (1.8m), 14s period, SW swell with 1,255 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 6PM (local time) - 3.5ft (1.0m), 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 Monday (Jul 20) at 6PM. The primary swell is predicted to be 1.0m and 14s period with a secondary swell of 0.2m and 9s. 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 1.8m 14s and forecast to arrive on Thursday (Jul 23) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Wednesday (Jul 22) at 6PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Mon 20th Jul) | 3.5ft (1.0m) 14s |
| Best Surf | 3PM (Thu 23rd Jul) | 5ft (1.6m) 14s |
| Most Powerful | 6AM (Thu 23rd Jul) | 6ft (1.8m) 14s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Alright, let’s break down what’s coming for Cunns over the next couple of weeks.
It’s a rough start, no two ways about it. Friday the 17th and Saturday the 18th are blown out with cross-shore wind and waves that are just too jumbled. The combined swell energy is only around 220-622 (moderate), and the period is short for a reef. Sunday through Tuesday the 21st is more of the same – onshore wind, choppy, not worth the drive.
Things finally turn the corner on Wednesday the 22nd. That morning, the wind goes glassy from the southwest, and we’ve got a clean 0.8m southwest swell. It’s small, but the period is 11 seconds, so it’s proper groundswell, and the energy is 204 (moderate). The water temp is 16°, right around average for this time of year.
The standout is Thursday the 23rd. Swell jumps to 1.8m in the morning and 1.6m in the afternoon, both from the southwest with a 14-second period. The combined energy hits 1220 and 1009 (strong wave energy), and the wind is cross-off from the south, keeping it clean. This is a serious pulse for experienced surfers – the reef will be firing, but it’s too big for beginners. You might see a few others out, but it’s not packed.
Friday the 24th is still solid – 1.3m to 1.4m southwest swell, clean cross-off winds, and energy in the 700s. That’s a good one.
After that, it gets messy again from Saturday the 25th through the end of the month – onshore winds, strong gusts, and choppy conditions. The 27th morning has a glassy 0.5m swell with an 18-second period, but it’s so small you’ll be waiting forever for a set.
Then on Saturday the 1st of August, we get a proper offshore from the southeast, 1.1m southwest swell, and 16-second period. The energy is 799 (strong), and it’s clean. That’s a promising one, but it’s a long way out, so keep an eye on it.
Bottom line: Thursday the 23rd and Friday the 24th are your best bets. If you’re only going to paddle out once, make it Thursday afternoon.
Stay salty,
Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Sat afternoon, min 13°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Mon afternoon, min 14°C on Wed afternoon). Wind will be generally light. | ||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||
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) | SW 16 | SW 16 | SW 14 | SW 13 | SW 13 | SW 13 | SW 19 | SW 18 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SW 14 | SW 15 | SW 14 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 619 | 532 | 412 | 215 | 208 | 132 | 133 | 370 | 587 | 566 | 482 | 590 | 560 | 363 | 244 | 150 | 257 | 1062 | 1220 | 961 | 878 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross-on | on | cross | cross-on | cross | off | glassy | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 1:54PM1.25m | 1:49AM0.83m | 2:05PM1.17m | 2:13AM0.89m | 2:16PM1.10m | 2:41AM0.91m | 2:26PM1.04m | 3:13AM0.90m | 2:35PM0.96m | 3:48AM0.86m | 2:35PM0.87m | 4:33AM0.79m | 2:02PM0.79m | ||||||||
Low Tide | 8:21PM0.24m | 7:34AM0.15m | 8:28PM0.21m | 7:58AM0.22m | 8:40PM0.17m | 8:22AM0.31m | 8:56PM0.16m | 8:45AM0.42m | 9:13PM0.18m | 9:06AM0.53m | 9:29PM0.23m | 9:12AM0.65m | 9:34PM0.31m | ||||||||
 | |  | | | | | | |  |  |  | | |  | | | | | | | |
 | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — | 7:33 | — | — |
 | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 18 | 17 | 16 | 19 | 18 | 17 | 19 | 19 | 17 | 19 | 18 | 17 | 18 | 16 | 16 | 15 | 14 | 14 | 13 | 13 |
Feels °C | 8 | 12 | 11 | 10 | 14 | 13 | 11 | 14 | 14 | 13 | 17 | 15 | 14 | 15 | 13 | 13 | 12 | 10 | 10 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 18 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SW 14 | SW 15 | SW 14 | SW 14 | SW 14 |
| kJ | 619 | 532 | 412 | 215 | 208 | 132 | 71 | 370 | 587 | 566 | 482 | 590 | 560 | 363 | 244 | 150 | 257 | 1062 | 1220 | 961 | 878 |
Swell 2 Height (m) Direction Period (s) | — | NNW 4 | — | — | — | SW 21 | SW 19 | SW 13 | S 10 | S 10 | S 10 | S 10 | — | — | — | SW 15 | — | — | — | — | — |
| kJ | — | 5 | — | — | — | 18 | 133 | 84 | 8 | 2 | 8 | 7 | — | — | — | 34 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | WSW 15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 3 | NNW 3 | NNE 2 | N 3 | NNW 3 | NNE 2 | N 3 | NW 4 | — | NW 3 | — | — | — | SW 13 | — | SW 11 | S 4 | SSW 15 | — | SW 14 | — |
| kJ | 3 | 1 | 1 | 5 | 2 | 1 | 8 | 3 | — | 3 | — | — | — | 42 | — | 20 | 14 | 88 | — | 48 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 146 | 0 | 0 | 401 | 0 | 178 | 178 | 0 | 0 | 500 | 0 | 0 | 491 | 489 | 243 | 0 | 0 |
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.
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