
Surf Forecasts:
Granites surf forecast from 10 Sep 2026:
- Most powerful swell: Sunday 13 Sep, 6AM (local time) - 3ft (0.9m), 17s period, WSW swell with 423 kJ wave energy.
Best Forecast Surf Conditions for Granites this week:
The most powerful waves expected at Granites in the next 16 days are 0.9m 17s and forecast to arrive on Sunday (Sep 13) at 6AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 15s period and expected on Tuesday (Sep 15) at 3PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Sun 13th Sep) | 3ft (0.9m) 17s |
Table - best surf conditions forecast for Granites over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.
Right off the bat, I gotta be straight with you – this is a tough spell. We’re looking at a long, dry run with no real surf to speak of for over a week. From Friday the 11th to Friday the 18th, it’s pretty much a flat-line. The energy’s just not there. You’ll see a whole lot of zeros in the combined swell energy, with a few tiny readings like 2 (weak) popping up late on the 18th, but nothing that’ll get you out of bed.
The only break on the radar here is Granites, a reef setup that’s fairly consistent and likes a swell from the SW. It’s an intermediate-level spot, and crowds can be a factor sometimes. The water temp is about average for this time of year, so nothing wild there.
The first real sign of life comes on Friday the 18th of September. By the afternoon, we finally see a little bump: a 1 ft NW swell with a period of just 3 seconds (short period, so not much push). The combined energy is a measly 2 (weak). The wind is clean though, coming from the north at 16 mph, keeping it cross-off. It’s the start of something, but it’s still poor surf quality.
Saturday the 19th of September stays similar. Morning brings 1 ft from the NNW, period 3 seconds, energy 4 (weak). Wind is still a fresh cross-off from the north at 19 mph, so the surface will be clean. But again, the size and period are tiny. By afternoon, the wind swings onshore from the WSW at 16 mph, and the wave state gets messy. Not worth paddling out.
Sunday the 20th of September shows a slight uptick. The morning has a 2 ft NW swell, period 4 seconds, energy up to 6 (still weak). Wind is light cross-onshore from the SW at 6 mph, so there’s a little bump on the surface. It’s still poor surf conditions overall. The afternoon drops back to 0.7 ft from the west with a period of 4 seconds, energy 1 (weak), and wind becomes a gentle cross-onshore.
Then we go flat again. From Monday the 21st to Friday the 25th, it’s back to zeros across the board. The combined swell energy is a total blank. The wind is often clean – cross-off or glassy in spots – but there’s simply no swell to work with.
Finally, on Saturday the 26th of September, the morning shows a tiny 1.0 ft SSW swell, period 4 seconds, energy 2 (weak). The wind is a gentle offshore from the east at 9 mph, so it’s clean, but the size is barely a ripple.
So, the honest truth? There is no standout session in this whole 16-day window. The best you could hope for is a clean, tiny wave on the morning of Saturday the 19th or the morning of Saturday the 26th, but you’ll be fighting for scraps. If you’re a kite surfer, those clean, cross-off winds on the bigger days might look more interesting than what we’ve got for a paddle. A blank run like this, especially for a spot that’s only fairly consistent, is a tough one. Forecasts can change, but right now, it’s a waiting game.
Stay patient.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Sat afternoon, min 14°C on Fri morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Wed afternoon, min 10°C on Tue night). Winds increasing (calm on Sun night, fresh winds from the ESE by Tue night). | ||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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 16 | SW 17 | SW 16 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | S 3 | SSW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 |
Wave Graph | |||||||||||||||||||
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | glassy | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | glassy | cross-on | cross | cross-off | cross | cross-off | off | cross | cross-off |
High Tide | 1:03AM0.26m | 1:15PM0.31m | 1:16AM0.30m | 1:28PM0.29m | 1:34AM0.34m | 1:39PM0.27m | 1:54AM0.36m | 1:50PM0.26m | 2:16AM0.37m | 2:01PM0.24m | 2:39AM0.37m | 2:10PM0.23m | 3:03AM0.35m | ||||||
Low Tide | 6:59AM0.02m | 7:19PM0.03m | 7:25AM0.01m | 7:22PM0.02m | 7:50AM0.01m | 7:30PM-0.00m | 8:13AM0.02m | 7:42PM-0.01m | 8:36AM0.04m | 7:55PM-0.02m | 8:59AM0.06m | 8:10PM-0.02m | |||||||
— | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | |
6:21 | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:23 | — | — | 6:24 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 19 | 21 | 20 | 23 | 25 | 25 | 17 | 15 | 13 | 16 | 15 | 14 | 14 | 15 | 12 | 16 | 17 | 17 |
Feels °C | 12 | 15 | 19 | 15 | 17 | 20 | 20 | 14 | 12 | 11 | 14 | 12 | 11 | 10 | 9 | 5 | 14 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | SW 16 | SW 17 | SW 16 | SW 14 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 16 | SSW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 |
322 | 258 | 284 | 318 | 342 | 196 | 102 | 574 | 636 | 139 | 192 | 125 | 254 | 632 | 1760 | 472 | 589 | 1363 | 314 | |
Swell 2 Height (m) Direction Period (s) | S 25 | SW 24 | — | — | SW 18 | — | SW 18 | — | — | SW 4 | SW 19 | SW 18 | — | SSW 5 | — | — | — | — | S 4 |
13 | 22 | — | — | 318 | — | 112 | — | — | 3 | 14 | 49 | — | 3 | — | — | — | — | 4 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SSW 6 | SW 19 | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | 3 | 125 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | E 4 | NE 3 | — | SE 3 | NNE 3 | N 3 | N 3 | SW 16 | SW 16 | — | — | — | S 3 | SE 4 | SSW 15 | SE 4 | E 3 | SW 15 | E 3 |
12 | 2 | — | 2 | 4 | 2 | 5 | 318 | 248 | — | — | — | 2 | 10 | 656 | 16 | 6 | 509 | 5 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 65 | 10 | 8 | 8 | 42 | 42 | 269 | 743 | 908 | 137 | 8 | 495 | 137 | 107 | 362 | 231 | 8 | 166 | 8 |
Best forecast wave conditions in Eyre Peninsula | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Granites Surf forecast
The above surf forecast table for Granites provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Granites can be found by selecting the local surf guide option on the grey menu. Our Granites 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 (Granites) 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 Granites 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 Eyre Peninsula? If you are looking for accommodation near Granites, camping, hotels and holiday cottages in Eyre Peninsula, consider staying in Thevenard which is 90 km (56 miles) away.










