Surf Forecasts:
Knights surf forecast from 9 Jul 2026:
- Best quality surf: Sunday 12 Jul, 3AM (local time) - 13ft (4.0m), 14s period, SW swell with cross-shore winds.
- Most powerful swell: Tuesday 14 Jul, 3AM (local time) - 13ft (4.0m), 16s period, SSW swell with 8,712 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 6PM (local time) - 5.5ft (1.7m), 17s 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 Thursday (Jul 09) at 6PM. The primary swell is predicted to be 1.7m and 17s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Knights in the next 16 days are 4.0m 16s and forecast to arrive on Tuesday (Jul 14) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 4s period and expected on Saturday (Jul 11) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 9th Jul) | 5.5ft (1.7m) 17s |
| Best Surf | 3AM (Sun 12th Jul) | 13ft (4.0m) 14s |
| Most Powerful | 3AM (Tue 14th Jul) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Knights over the next 16 days.
Alright folks, Rusty here. Let’s talk about what’s coming up for Knights.
Right off the bat, we’ve got a proper groundswell rolling in from the SSW with a deep, long 15-second period. The water temp is sitting at 59°F, which is pretty much normal for this time of year. The first real action kicks off Thursday morning, with clean 5-foot surf and a light NNE breeze keeping it glassy. The combined energy is solid at 1073, and it’s only going to build through the afternoon. This is excellent, but it’s a spot for experienced surfers only – don’t get caught out if you’re not ready for it.
Friday holds similar conditions with 5-foot to 5-foot SSW swell, but the wind shifts around a bit more cross-off, keeping it clean. The energy drops a little, but still very surfable.
Now, Saturday is a write-off. Strong winds, rain, and a messy, lumpy 10-foot swell in the afternoon – that’s kite-surfing territory, not paddle surfing. Sunday and Monday see a massive jump in size, with 12-foot to 13-foot SSW swell. The energy numbers are huge (over 4600 and even 7800 on Tuesday), but the cross-shore wind and massive size mean this is strictly for big-wave experts. Beginners and intermediates, stay well clear.
The standout window is Wednesday 15th through Saturday 18th. The swell drops back to a more manageable 6-foot to 8-foot range, but the wind is your friend. Friday 17th afternoon is the absolute gem: 6-foot SSW groundswell, glassy conditions, and a light ESE breeze. That’s as clean as it gets. The energy is still strong at 1356, and the long period (15 seconds) will give you proper, powerful lines. This is the pick of the fortnight.
The following week gets a bit sloppy again. Monday 20th has clean mornings but then the wind turns onshore, and from Tuesday 21st to Wednesday 22nd, it’s pretty much all onshore junk with 8-foot to 10-foot slop. Not worth paddling out.
The very end of the outlook, Thursday 23rd and Friday 24th, fades out. Thursday morning has a brief clean window with 4-foot SSW swell, but the wind picks up and the surf drops off fast. By Friday, it’s just small, choppy leftovers.
Best bet: Friday 17th July afternoon at Knights. Glassy, 6-foot SSW groundswell, and the energy is pumping. Get on it.
Rusty out.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat morning. Very mild (max 16°C on Thu afternoon, min 10°C on Sat afternoon). Winds increasing (light winds from the N on Thu night, fresh winds from the NW by Sat morning). | Days 4-6 Weather SummarySome drizzle, heaviest during Tue afternoon. Very mild (max 15°C on Sun morning, min 7°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 15 | SSW 15 | SSW 16 | SSW 15 | SW 14 | SW 14 | SSW 14 | SW 10 | SW 12 | SW 13 | SSW 13 | SSW 14 | SSW 16 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 936 | 911 | 1479 | 987 | 721 | 564 | 352 | 2075 | 4524 | 4651 | 3672 | 3572 | 4796 | 3789 | 8387 | 7873 | 6345 | 4547 | 3199 | 2542 | 1704 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross | cross | cross | cross | cross | cross-on | cross-on | on | cross | cross-off | cross | cross-off |
High Tide | 10:45AM1.00m | 11:09AM1.17m | 11:40AM1.31m | 00:41AM0.56m | 12:13PM1.41m | 00:38AM0.54m | 12:44PM1.46m | 00:43AM0.53m | 1:14PM1.46m | 00:52AM0.55m | 1:42PM1.42m | 1:10AM0.59m | |||||||||
Low Tide | 10:31PM0.60m | 9:53PM0.57m | 9:55PM0.53m | 10:07PM0.50m | 10:23PM0.50m | 3:58AM0.45m | 10:34PM0.51m | 4:53AM0.40m | 10:34PM0.54m | ||||||||||||
 |  |  | | | |  |  |  | | | | | | |  | | | | | | |
 | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — |
 | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:17 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — |
mm | — | — | — | — | — | — | 3 | 1 | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 15 | 16 | 13 | 15 | 15 | 13 | 12 | 11 | 12 | 15 | 15 | 13 | 15 | 15 | 13 | 14 | 13 | 12 | 9 | 9 | 9 |
Feels °C | 13 | 14 | 11 | 12 | 11 | 10 | 5 | 4 | 5 | 9 | 10 | 8 | 9 | 10 | 10 | 10 | 11 | 9 | 6 | 6 | 8 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 16 | SSW 15 | SW 14 | SW 14 | SSW 14 | — | — | SW 13 | SSW 13 | SSW 14 | SSW 16 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 |
| kJ | 936 | 911 | 1479 | 987 | 721 | 564 | 352 | — | — | 4651 | 3672 | 3572 | 4796 | 3789 | 8387 | 7873 | 6345 | 4547 | 3199 | 2542 | 1704 |
Swell 2 Height (m) Direction Period (s) | SW 20 | SSW 18 | — | — | — | — | NNE 5 | — | — | — | — | SSW 18 | SW 20 | SSW 20 | — | — | — | — | — | — | — |
| kJ | 137 | 508 | — | — | — | — | 2 | — | — | — | — | 1081 | 392 | 151 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | WSW 18 | — | — | — | — | — | — | — | — | — | SW 22 | — | — | — | — | — | — | — | — | — |
| kJ | — | 283 | — | — | — | — | — | — | — | — | — | 119 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 3 | NE 3 | N 3 | NNE 3 | NNW 3 | NNW 3 | WNW 4 | SW 10 | SW 12 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 5 | 3 | 5 | 3 | 5 | 6 | 68 | 2075 | 4524 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 2 | 1 | 577 | 876 | 1020 | 1030 | 1030 | 2 | 870 | 1112 | 591 | 2 | 137 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in South Australia - East Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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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