Surf Forecasts:
Cunns surf forecast from 4 Sep 2026:
- Best quality surf: Sunday 6 Sep, 12AM (local time) - 7.5ft (2.3m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 9PM (local time) - 8ft (2.5m), 17s period, SSW swell with 3,685 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 12AM (local time) - 7.5ft (2.3m), 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 Sunday (Sep 06) at 12AM. The primary swell is predicted to be 2.3m and 14s period. 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 2.5m 17s and forecast to arrive on Wednesday (Sep 09) at 9PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Wednesday (Sep 09) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 6th Sep) | 7.5ft (2.3m) 14s |
| Best Surf | 12AM (Sun 6th Sep) | 7.5ft (2.3m) 14s |
| Most Powerful | 9PM (Wed 9th Sep) | 8ft (2.5m) 17s |
Table - best surf conditions forecast for Cunns over the next 16 days.
The Lowdown
Righto, let’s talk about what’s going on at Cunns. This reef setup loves a SW swell, so that’s what we’ve got coming our way. The water temp is sitting about average for this time of year, nothing weird happening there. The opening weekend is a bit of a write-off, so don’t rush in today—Saturday the 5th is a mess with strong cross-onshore winds and lumpy conditions. Sunday the 6th is where the mood shifts.
Sunday the 6th morning is your first real standout. It’s clean, with a gentle breeze, a 7ft SW swell on a 14-second period, and a cross-off wind that’ll polish the faces. The combined swell energy is sitting at 1443 (moderate-strong), so there’s plenty of push. This is one for experienced surfers—that size and power isn’t beginner territory. The afternoon stays clean with an offshore wind, but it drops a touch to 6ft.
Monday the 7th sees the swell drop right off into the 3–4ft range, but the wind stays offshore, and the afternoon session gets a “very good” nod from the wave comment. Clean, small, fun for a longer board.
Tuesday the 8th morning is another standout. Clean, light breeze, 5ft SW swell with a very long 17-second period. That’s groundswell—proper energy, long lines, and long waits between sets. Combined energy is 1519. Perfect for Cunns’ reef. This is excellent for experienced surfers again.
Midweek gets tricky. Wednesday the 9th kicks up to 7ft but with strong offshore winds—clean faces but hard to paddle into. The swell period is 17–18 seconds, combined energy 2427–2748 (strong to very strong). This is expert-only territory; that paddle-out will test you. Thursday the 10th stays in that 6–7ft range, fresh offshore, clean, but again a battle to get out.
From Friday the 11th through to Sunday the 13th morning, the swell backs off into the 3–5ft range. Most of it is clean, with some nice afternoon windows on Friday and Saturday. Saturday the 12th morning is a beauty: 5ft SW, 18-second period, gentle cross-off breeze, combined energy 1162. Clean, lined up, and not too heavy.
Then there’s a flat spell. Sunday the 13th afternoon through to Tuesday the 15th is small and messy—2ft to 2ft with fresh cross-shore winds and lumpy junk. Not worth paddling out. Wednesday the 16th morning kicks back in with a clean 6ft SSW swell (13 seconds) and moderate offshore wind, combined energy 1689. That’s another good one for experienced surfers.
After that, the last few days float around 3–4ft. Friday the 18th morning has a clean 4ft with offshore wind and a very long 18-second period—small but clean. The final weekend, the 19th–20th, gets blown out by strong cross-onshore winds and messy conditions, so don’t bother.
Best on offer: Sunday the 6th morning and Tuesday the 8th morning . Both are clean, solid SW swell on long periods, with good energy and offshore or cross-off winds. Crowds are possible at Cunns, but with that size and the inconsistent nature of the break, you might find a window of quiet.
Rusty
Short Range ForecastMostly dry. Very mild (max 15°C on Sun morning, min 11°C on Sat night). Winds decreasing (fresh winds from the WSW on Sat morning, light winds from the S by Sat night). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Tue afternoon. Very mild (max 17°C on Thu afternoon, min 9°C on Wed night). Winds increasing (calm on Tue morning, strong winds from the SE by Wed 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) | SW 12 | SW 13 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1945 | 2012 | 1912 | 1443 | 1033 | 444 | 336 | 482 | 850 | 1519 | 1276 | 1215 | 2248 | 2408 | 2912 | 2187 | 1869 | 1203 | 685 | 590 | 630 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross-off | cross-off | off | off | off | off | off | cross-off | cross-off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 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 | 12:24PM1.29m | 00:33AM1.03m | 12:37PM1.26m | 00:44AM1.14m | |||||||
Low Tide | 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 | 6:04AM0.12m | 6:44PM0.07m | 6:23AM0.05m | 6:47PM0.04m | ||||||||
 | |  |  | |  |  | |  |  |  | | | | | | | | | | | |
 | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:43 | — | — | 6:43 | — | — |
 | — | 6:22 | — | — | 6:23 | — | — | 6:23 | — | — | 6:24 | — | — | 6:24 | — | — | 6:25 | — | — | 6:27 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | 8 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 13 | 15 | 15 | 13 | 11 | 14 | 14 | 14 | 12 | 13 | 13 | 13 | 13 | 13 | 17 | 17 | 19 | 21 | 19 |
Feels °C | 7 | 8 | 10 | 12 | 10 | 8 | 6 | 10 | 10 | 11 | 6 | 8 | 5 | 7 | 5 | 7 | 10 | 11 | 13 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | — | — | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 |
| kJ | — | — | 1912 | 1443 | 1033 | 444 | 336 | 482 | 850 | 1519 | 1276 | 1215 | 2248 | 2408 | 2912 | 2187 | 1869 | 1203 | 685 | 590 | 630 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SSW 6 | SW 21 | SW 20 | SW 13 | — | — | — | S 7 | — | — | — | SW 26 | SW 25 | SW 24 | SW 22 | — |
| kJ | — | — | — | — | — | 24 | 71 | 204 | 202 | — | — | — | 1 | — | — | — | 26 | 25 | 22 | 73 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 12 | SW 13 | — | — | — | SE 4 | ESE 4 | SE 3 | SSE 5 | — | — | SSE 5 | SSE 6 | S 8 | ESE 4 | E 4 | ESE 2 | E 4 | ENE 4 | — | NE 2 |
| kJ | 1945 | 2012 | — | — | — | 32 | 26 | 1 | 39 | — | — | 41 | 123 | 221 | 37 | 16 | 1 | 13 | 8 | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1217 | 1035 | 1197 | 0 | 0 | 243 | 243 | 132 | 0 | 0 | 0 | 153 | 1242 | 1652 | 1577 | 1229 | 491 | 491 | 153 | 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.
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