Surf Forecasts:
Flatrock surf forecast from 13 Jul 2026:
- Best quality surf: Monday 13 Jul, 6PM (local time) - 16ft (5.0m), 17s period, SW swell with onshore winds.
- Most powerful swell: Tuesday 14 Jul, 12AM (local time) - 18ft (5.5m), 17s period, SW swell with 15,888 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 6PM (local time) - 16ft (5.0m), 17s period with SW swell.
Best Forecast Surf Conditions for Flatrock this week:
The surf forecast for Flatrock over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jul 13) at 6PM. The primary swell is predicted to be 5.0m and 17s period with a secondary swell of 4.0m and 17s. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Flatrock in the next 16 days are 5.5m 17s and forecast to arrive on Tuesday (Jul 14) at 12AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Thursday (Jul 16) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Mon 13th Jul) | 16ft (5.0m) 17s |
| Best Surf | 6PM (Mon 13th Jul) | 16ft (5.0m) 17s |
| Most Powerful | 12AM (Tue 14th Jul) | 18ft (5.5m) 17s |
Table - best surf conditions forecast for Flatrock over the next 16 days.
Right, let’s talk about the only break we’ve got: Flatrock. That’s where your whole 16-day outlook lives.
Water temp is 59°F – normal for this time of year, nothing wild.
The first few days are quiet, but things start kicking off properly on Monday 13 July afternoon. We’re talking a 16ft SW groundswell with a 16 second period, and the combined wave energy is a massive 21519. That’s huge, pure power. Only trouble is the wind is onshore out of the west at 22 mph, making it a messy, gnarly beast. This is a reef break handling serious size – not for anyone but experts, and even then it’s lumpy.
Tuesday 14 July sees the same 16ft SW swell early, with 18661 energy. Cross-on wind from the southwest at 16 mph, so it’s choppy. Tuesday afternoon drops to 12ft but the wind is still cross-on, surf is fairly choppy.
Wednesday 15 July is your real gem. Morning conditions: 8ft SW groundswell with a 15 second period, 3093 energy. Wind is cross-off from the northeast at 6 mph – that’s clean, offshore breeze, making it shape up really nice for experienced surfers. Then Wednesday afternoon goes glassy, with 2 mph westerly wind. Flatrock with an 8ft SW, 14 second swell and no wind? You can’t ask for much cleaner. That’s your standout session.
From Thursday 16 July onward, the surf hangs around but it’s mostly marginal. There are a couple of clean cross-off windows on Thursday 16 July morning and Friday 17 July morning with 7ft to 7ft SW swells and 15-16 second periods, but it’s not as good as Wednesday.
After 18 July, the swell drops, the period shortens, and the wind gets cranky – cross, cross-on, or too strong. There’s a late pulse on 23 July afternoon – 10ft SW, 19 second swell – but it’s cross-on and choppy. Then Friday 24 July morning: 12ft SW, 17 second swell, clean cross-off winds, 7029 energy – that looks promising but it’s a week and a half out, so don’t book your flights yet.
From 25 July on, it’s basically all poor. Heavy wind, rain, onshore conditions, blown-out surf. That’s more kitesurfing territory than paddle surfing.
So the top pick is Wednesday 15 July – morning and afternoon. If you’re feeling patient, maybe keep an eye on Friday 24 July morning, but remember long-range forecasts can shift.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Very mild (max 15°C on Mon morning, min 13°C on Tue night). Winds decreasing (fresh winds from the W on Mon morning, calm by Tue night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Sat night, min 13°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
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 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SW 16 | SW 16 | SW 14 | SW 13 | SW 13 | SW 13 | SW 19 | SW 18 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6128 | 13565 | 15888 | 11624 | 5998 | 4195 | 3093 | 2577 | 2155 | 1604 | 2772 | 2352 | 2496 | 1761 | 1092 | 637 | 488 | 363 | 738 | 1761 | 2756 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | glassy | cross-off | glassy | cross-off | cross-off | cross-on | cross-off | cross-off | cross-on | cross-off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 12:29PM0.61m | 00:54AM0.11m | 1:07PM0.63m | 00:57AM0.13m | 1:39PM0.62m | 1:10AM0.18m | 2:06PM0.59m | 1:34AM0.23m | 2:27PM0.54m | 2:06AM0.29m | 2:42PM0.49m | 2:43AM0.33m | 2:54PM0.44m | 3:23AM0.36m | |||||||
Low Tide | 9:00PM0.06m | 4:44AM0.06m | 9:13PM0.08m | 5:40AM0.03m | 9:17PM0.11m | 6:27AM0.02m | 9:15PM0.13m | 7:10AM0.03m | 9:13PM0.13m | 7:49AM0.05m | 9:14PM0.12m | 8:26AM0.09m | 9:21PM0.09m | ||||||||
 | |  |  | |  | | | | | | | | |  | |  | | | |  | |
 | 7:33 | — | — | 7:33 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — | 7:31 | — | — |
 | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — |
mm | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 15 | 14 | 14 | 16 | 15 | 13 | 16 | 16 | 14 | 17 | 18 | 15 | 17 | 17 |
Feels °C | 9 | 8 | 10 | 11 | 13 | 13 | 12 | 14 | 11 | 9 | 14 | 11 | 7 | 14 | 12 | 8 | 13 | 13 | 9 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SSW 19 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SW 16 | SW 16 | SW 14 | SW 13 | SW 13 | SW 13 | SW 19 | SW 18 | SW 16 |
| kJ | 2089 | 13565 | 15888 | 11624 | 5998 | 4195 | 3093 | 2577 | 2155 | 1604 | 2772 | 2352 | 2496 | 1761 | 1092 | 637 | 488 | 363 | 738 | 1761 | 2756 |
Swell 2 Height (m) Direction Period (s) | SW 19 | — | — | — | — | — | — | — | — | SSW 17 | S 12 | SSE 11 | S 10 | S 11 | SSE 10 | S 10 | S 24 | WNW 7 | SW 12 | WSW 13 | SSW 12 |
| kJ | 2530 | — | — | — | — | — | — | — | — | 1320 | 44 | 47 | 18 | 9 | 10 | 2 | 11 | 41 | 167 | 679 | 46 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 10 | — | — | SW 24 | SW 21 | SW 15 | S 11 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 11 | — | — | 22 | 117 | 141 | 61 | — |
Wind waves Height (m) Direction Period (s) | SW 16 | SW 16 | SW 17 | SW 16 | — | — | — | — | — | N 4 | — | — | ESE 10 | WNW 6 | NW 6 | NNW 4 | NW 6 | N 4 | NW 5 | NW 7 | — |
| kJ | 6128 | 7954 | 8646 | 7037 | — | — | — | — | — | 9 | — | — | 11 | 20 | 31 | 47 | 58 | 12 | 67 | 181 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1189 | 1458 | 884 | 884 | 153 | 0 | 0 | 0 | 74 | 151 | 42 | 74 | 44 | 42 | 44 | 44 | 44 | 44 | 44 | 42 | 44 |
Best forecast wave conditions in Eyre Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Flatrock Surf forecast
The above surf forecast table for Flatrock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Flatrock can be found by selecting the local surf guide option on the grey menu. Our Flatrock 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 (Flatrock) 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 Flatrock 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 Flatrock, camping, hotels and holiday cottages in Eyre Peninsula, consider staying in Port Lincoln which is 49 km (30 miles) away.
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