Surf Forecasts:
Knights surf forecast from 2 Aug 2026:
- Best quality surf: Friday 7 Aug, 6PM (local time) - 6ft (1.8m), 17s period, SSW swell with offshore winds.
- Most powerful swell: Sunday 9 Aug, 3PM (local time) - 13ft (4.0m), 13s period, SW swell with 5,678 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 6PM (local time) - 5.5ft (1.7m), 11s period with SSW swell.
Best Forecast Surf Conditions for Knights this week:
The surf forecast for Knights over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 04) at 6PM. The primary swell is predicted to be 1.7m and 11s period with a secondary swell of 0.8m and 15s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Knights in the next 16 days are 4.0m 13s and forecast to arrive on Sunday (Aug 09) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Sunday (Aug 02) at 3PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 4th Aug) | 5.5ft (1.7m) 11s |
| Best Surf | 6PM (Fri 7th Aug) | 6ft (1.8m) 17s |
| Most Powerful | 3PM (Sun 9th Aug) | 13ft (4.0m) 13s |
Table - best surf conditions forecast for Knights over the next 16 days.
The Lowdown
Alright, let's talk in feet and all that.
The main spot we’re looking at for the whole 16 days is Knights. This is an advanced-level, fairly consistent beach and reef break that’s fully open to the south swell. Water temp is a mild 57°, which is about normal for the season.
Right now, we’ve got a bit of south-southwest groundswell, around 6 feet with a long 16-second period. Wind is a moderate north-northwest cross-off, so the surface is clean, but the energy is just okay, and the call is only marginal. Not the best start.
Things stay average through the weekend and into Monday the 5th of August. That morning, the swell drops to about 3 feet, but the period stays at 15 seconds, and the wind goes light north – offshore. The water goes glassy. It won’t be big, but it’ll be clean and lined up.
Thursday the 8th of August is a washout – fresh 19 mph breeze from the north, and 6 feet of bumpy groundswell. Not good.
Now, here’s the big news. Starting Monday the 12th of August, the swell goes absolutely nuts. We’re talking 18 feet of south-southwest groundswell with a 16-second period on the 12th, and the combined energy is 23214 – that’s very powerful. The wind is light and cross, but the size is just too big for Knights. It’s expert-only, and even for them, it’s a challenge. This massive swell hangs around for days, hitting 15 feet or more, with some offshore wind on the 14th and 15th, but the data says it’s too big for the break. It’s more of a big-wave or kite session than a standard paddle.
After that, the swell eases, but the wind turns onshore. By the 18th of August, we’re back to around 8 feet but with a south wind on it, and the quality is poor.
The absolute best bet is Wednesday the 7th of August. Morning has 6 feet of clean south-southwest groundswell, 16-second period, and a light offshore breeze from the north-northeast. The afternoon holds at 7 feet. The report says excellent for experienced surfers. That’s your window. Small window, clean, and punchy. Just watch for the crowds – it does get busy.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun afternoon. Very mild (max 13°C on Sun morning, min 7°C on Tue night). Winds decreasing (fresh winds from the NW on Sun morning, calm by Tue afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Fri night. Very mild (max 18°C on Fri morning, min 9°C on Wed morning). Winds increasing (calm on Thu afternoon, fresh winds from the NNW by Fri night). | ||||||||||||||||||||
Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | |||||||||||||||
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) | SSW 16 | SSW 15 | SSW 15 | SW 14 | SW 14 | SSW 13 | SSW 12 | SSW 11 | SSW 10 | SSW 15 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 17 | SSW 16 | SSW 17 | SSW 17 | SSW 16 | SSW 15 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1586 | 1431 | 1447 | 2541 | 2193 | 1986 | 1291 | 838 | 502 | 339 | 413 | 1032 | 666 | 674 | 1775 | 1608 | 2256 | 1673 | 1289 | 1386 | 1158 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-on | cross-on | on | cross-on | on | cross-off | off | glassy | cross-off | cross-off | glassy | off | off | cross-off | off | cross-off | cross-off | cross |
High Tide | 2:41PM1.16m | 2:51AM0.86m | 3:01PM1.10m | 3:23AM0.95m | 3:16PM1.03m | 3:59AM1.01m | 3:20PM0.96m | 4:39AM1.06m | 2:51PM0.93m | 5:32AM1.07m | 11:20AM1.18m | ||||||||||
Low Tide | 9:11PM0.43m | 8:09AM0.41m | 9:15PM0.45m | 8:43AM0.53m | 9:17PM0.47m | 9:14AM0.68m | 9:13PM0.48m | 9:28AM0.85m | 9:08PM0.47m | 8:35AM1.01m | 9:07PM0.45m | 9:11PM0.43m | |||||||||
 |  |  |  | | |  | |  | | | | | | | | |  |  | | | |
 | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — |
 | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | — | 7 |
Temp °C | 13 | 13 | 12 | 13 | 12 | 11 | 12 | 12 | 9 | 13 | 12 | 11 | 15 | 15 | 13 | 18 | 18 | 14 | 11 | 13 | 13 |
Feels °C | 5 | 7 | 7 | 8 | 7 | 7 | 8 | 9 | 7 | 11 | 10 | 8 | 13 | 13 | 11 | 14 | 14 | 10 | 4 | 8 | 8 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 15 | SSW 15 | — | — | SSW 13 | SSW 12 | SSW 11 | SSW 10 | SSW 10 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 17 | SSW 16 | SSW 17 | SSW 17 | SSW 16 | SSW 15 | SSW 15 |
| kJ | 1586 | 1431 | 1447 | — | — | 1986 | 1291 | 838 | 502 | 193 | 299 | 1032 | 666 | 674 | 1775 | 1608 | 2256 | 1673 | 1289 | 1386 | 1158 |
Swell 2 Height (m) Direction Period (s) | — | — | WSW 18 | — | — | SSW 18 | SSW 17 | SSW 16 | SSW 20 | SSW 15 | SSW 9 | SW 13 | S 8 | SW 20 | S 8 | SSW 19 | S 8 | — | — | W 5 | — |
| kJ | — | — | 395 | — | — | 273 | 109 | 220 | 280 | 339 | 101 | 172 | 31 | 186 | 5 | 630 | 1 | — | — | 2 | — |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 18 | — | — | — | SSW 16 | — | SSW 15 | SSW 19 | SSW 18 | S 8 | SSE 8 | S 8 | S 8 | S 8 | — | — | — | — | — |
| kJ | — | — | 211 | — | — | — | 397 | — | 45 | 332 | 413 | 29 | 13 | 20 | 6 | 5 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | WNW 5 | WSW 6 | SW 14 | SW 14 | — | — | — | — | NNE 2 | — | — | — | — | ESE 7 | NNE 3 | NE 3 | N 3 | NNW 4 | NNW 4 | WNW 5 |
| kJ | 18 | 61 | 203 | 2541 | 2193 | — | — | — | — | 1 | — | — | — | — | 5 | 4 | 6 | 5 | 34 | 19 | 100 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 502 | 502 | 404 | 570 | 578 | 137 | 137 | 157 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 577 | 518 | 1020 |
Best forecast wave conditions in South Australia - East Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Knights surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Knights Surf forecast
The above surf forecast table for Knights provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Knights can be found by selecting the local surf guide option on the grey menu. Our Knights 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 (Knights) 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 Knights 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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