
Surf Forecasts:
Gnaraloo surf forecast from 15 Sep 2026:
- Best quality surf: Thursday 17 Sep, 2AM (local time) - 3.5ft (1.0m), 14s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 5AM (local time) - 7ft (2.1m), 16s period, WSW swell with 2,244 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 2AM (local time) - 3.5ft (1.0m), 14s period with WSW swell.
Best Forecast Surf Conditions for Gnaraloo this week:
The surf forecast for Gnaraloo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 17) at 2AM. The primary swell is predicted to be 1.0m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Gnaraloo in the next 16 days are 2.1m 16s and forecast to arrive on Saturday (Sep 19) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Saturday (Sep 19) at 11PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 17th Sep) | 3.5ft (1.0m) 14s |
| Best Surf | 2AM (Thu 17th Sep) | 3.5ft (1.0m) 14s |
| Most Powerful | 5AM (Sat 19th Sep) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Gnaraloo over the next 16 days.
The Lowdown
Alright mate, Rusty here. Let's chew the fat on what the next couple of weeks are serving up.
Right off the bat, the start of this run is pretty lackluster. There's a bit of swell in the water for the first few days, but the wind is all over the shop, messing up what little quality there is. Mornings look clean, but the afternoons turn into a cross-shore chop fest. Not worth paddling out for just yet.
Now, the first real shot of decent surf comes on Saturday the 19th. The swell jumps up to a solid 7ft with a long 16-second period. That's proper groundswell energy, and the morning is looking clean with a cross-offshore breeze. This is a standout morning. It'll have some serious power to it, so it's not one for the beginners. Get out there early though, because the afternoon wind is forecast to be howling at 25 mph, which will ruin it.
Sunday the 20th is a step down but still has some fun waves in the morning, around 5ft and clean. The afternoon gets blown out again, so it’s a morning mission.
We go through a bit of a quiet patch again for a few days, with smaller surf and persistent afternoon wind. It's all building towards something though.
The next big one is Saturday the 26th. We're looking at a hefty 7ft of swell with a very long 18-second period. That's some serious energy. The morning looks clean, and this is another one for the experienced crew only; it's got size and power. Because the period is so long, it might be a bit unusual at a beach break, but on a reef like this, it should be firing. It's a promising call, but being that far out, don't book your flights just yet.
The following morning, Sunday the 27th, is also a standout. The swell is still solid at 6ft, but the wind swings offshore. That's the magic combo, producing the cleanest surf of the whole stretch. This is your other top pick.
After that, it starts to fade. Monday the 28th still has some clean 5ft waves in the morning with offshore winds, but the wind swings onshore later and things get messy. The final few days are poor, with onshore winds and dropping swell.
So, to wrap it up, your two best bets are the mornings of Saturday the 19th and Saturday the 26th, with Sunday the 27th as a close third. Get out there when it's clean and before that afternoon breeze wrecks it.
Remember, the long-range stuff is promising but not set in stone. The signs are there for some good waves.
Rusty out.
Short Range ForecastMostly dry. Warm (max 25°C on Thu afternoon, min 19°C on Tue night). Winds decreasing (fresh winds from the SSW on Tue night, calm by Thu morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Sun afternoon, min 16°C on Sat night). Mainly strong winds. | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 17 | WSW 16 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 12 | WSW 12 | WSW 16 | WSW 15 |
Wave Graph | |||||||||||||||||||
789 | 702 | 537 | 352 | 222 | 305 | 217 | 201 | 183 | 1800 | 2054 | 1818 | 1240 | 829 | 946 | 329 | 271 | 350 | 902 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 00:18AM1.26m | 1:03PM0.84m | 00:45AM1.23m | 1:34PM0.75m | 1:13AM1.17m | 2:06PM0.67m | 1:42AM1.10m | 2:49PM0.60m | 2:18AM1.03m | 4:46PM0.55m | 3:10AM0.95m | 4:58AM0.89m | |||||||
Low Tide | 7:00AM0.17m | 6:10PM0.38m | 7:36AM0.22m | 6:27PM0.42m | 8:14AM0.30m | 6:40PM0.46m | 9:02AM0.38m | 6:45PM0.50m | 10:30AM0.44m | 6:06PM0.55m | 1:11PM0.43m | ||||||||
— | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | |
6:19 | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:21 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 24 | 23 | 21 | 23 | 25 | 22 | 23 | 22 | 20 | 22 | 23 | 19 | 24 | 25 | 20 | 25 | 24 | 20 |
Feels °C | 16 | 23 | 20 | 19 | 22 | 22 | 21 | 20 | 18 | 15 | 19 | 19 | 13 | 19 | 20 | 14 | 21 | 19 | 16 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 17 | WSW 16 | WSW 16 | WSW 14 | WSW 14 | — | WSW 12 | WSW 12 | WSW 16 | WSW 15 |
789 | 702 | 537 | 352 | 222 | 305 | 217 | 201 | 183 | 1800 | 2054 | 1818 | 1240 | 829 | — | 329 | 271 | 350 | 902 | |
Swell 2 Height (m) Direction Period (s) | — | W 18 | — | — | W 16 | — | WSW 4 | W 18 | W 19 | SW 6 | — | — | — | — | — | — | WSW 18 | WSW 11 | — |
— | 57 | — | — | 81 | — | 1 | 104 | 177 | 49 | — | — | — | — | — | — | 102 | 186 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 20 | — | W 16 | — | — | — | — | — | — | — | — | W 9 | — |
— | — | — | — | — | — | 30 | — | 20 | — | — | — | — | — | — | — | — | 2 | — | |
Wind waves Height (m) Direction Period (s) | SSW 7 | — | SW 4 | SW 5 | — | SW 4 | — | SW 3 | SW 4 | S 3 | SSE 3 | SSW 5 | SSW 6 | SE 3 | WSW 13 | SSW 6 | SSW 6 | SW 4 | SSW 6 |
78 | — | 25 | 11 | — | 10 | — | 4 | 17 | 8 | 4 | 44 | 110 | 2 | 946 | 66 | 34 | 46 | 56 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 522 | 216 | 567 | 0 | 216 | 1305 | 216 | 216 | 1300 | 1386 | 216 | 1669 | 446 | 445 | 1001 | 446 | 216 | 1098 | 446 |
Best forecast wave conditions in North West WA | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Gnaraloo Surf forecast
The above surf forecast table for Gnaraloo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Gnaraloo can be found by selecting the local surf guide option on the grey menu. Our Gnaraloo 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 (Gnaraloo) 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 Gnaraloo 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 North West WA? If you are looking for accommodation near Gnaraloo, camping, hotels and holiday cottages in North West WA, consider staying in Cape Cuvier which is 55 km (34 miles) away.










