Surf Forecasts:
Knights surf forecast from 28 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 9AM (local time) - 15ft (4.5m), 16s period, SSW swell with onshore winds.
- Most powerful swell: Wednesday 29 Jul, 9AM (local time) - 15ft (4.5m), 16s period, SSW swell with 8,860 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 9AM (local time) - 15ft (4.5m), 16s 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 Wednesday (Jul 29) at 9AM. The primary swell is predicted to be 4.5m and 16s period with a secondary swell of 4.0m and 16s. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Knights in the next 16 days are 4.5m 16s and forecast to arrive on Wednesday (Jul 29) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Aug 02) at 12PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Wed 29th Jul) | 15ft (4.5m) 16s |
| Best Surf | 9AM (Wed 29th Jul) | 15ft (4.5m) 16s |
| Most Powerful | 9AM (Wed 29th Jul) | 15ft (4.5m) 16s |
Table - best surf conditions forecast for Knights over the next 16 days.
The Lowdown
Alright, let’s get into it. The main spot for the next couple of weeks is Knights, a beach and reef break that’s fairly consistent and works best on a south-southeast swell. This is for advanced surfers only, so if you’re not there yet, give it a miss.
First chance to get wet properly is Friday the 31st of July. The morning has a 5-foot south-southwest swell with a 12-second period, clean offshore winds from the north-northeast at 6 mph, and moderate energy (729). Not huge but clean. The afternoon goes glassy with a light east-northeast breeze and the same swell, but energy rises to 946. That’s a sweet, clean session. Knights can get crowded often, so expect company.
Saturday the 1st of August is a standout. The morning serves up a 6-foot south-southwest swell with a very long 17-second period and offshore winds from the north at 9 mph. Combined energy is strong (1682). Water’s about 58°, normal for this time of year. This is classic—long, clean lines for experienced surfers. The afternoon holds at 7 feet but the breeze goes cross-offshore, still decent.
Monday the 3rd of August looks messy—8-foot swell but cross-onshore wind and lumpy. Skip it.
But Tuesday the 4th of August is pure magic. Morning is dead calm, glassed off, with a 7-foot south-southwest swell and moderate energy (1318). No wind at all. The afternoon stays glassy with a 6-foot swell. Both are rated excellent for experienced surfers. That Tuesday is your golden window—perfect conditions.
Then Thursday the 6th of August afternoon brings a 6-foot south-southwest swell with a massive 21-second period and energy at 4595. Clean with a light cross-offshore breeze. That’s a lot of power, but the long period might make it straighten out on the beach—stick to the reef.
Looking into the second week, Tuesday the 11th of August morning has a 10-foot south-southwest swell with a 19-second period, energy at 5915, and cross-offshore winds. That’s exceptional for experts, but the rest of that week gets windy and lumpy.
Two best calls: Tuesday the 4th of August for total glass, and Friday the 31st of July for that afternoon clean-up. Long-range, Tuesday the 11th looks promising but less certain.
Rusty
Short Range ForecastMostly dry. Very mild (max 13°C on Wed morning, min 10°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun morning. Very mild (max 14°C on Sat morning, min 11°C on Sat morning). Winds decreasing (fresh winds from the NNW on Sun morning, calm by Mon night). | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 13 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SW 14 | SSW 14 | SSW 12 | SSW 12 | SSW 11 | SSW 20 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8860 | 5099 | 2806 | 1872 | 1365 | 751 | 636 | 589 | 578 | 1676 | 2643 | 2372 | 1586 | 1275 | 1191 | 2423 | 3116 | 1824 | 1041 | 750 | 670 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | glassy | off | glassy | off | off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | on | cross-on | glassy | glassy | off |
High Tide | 1:08PM1.33m | 1:10AM0.62m | 1:32PM1.31m | 1:32AM0.66m | 1:55PM1.27m | 1:56AM0.71m | 2:19PM1.22m | 2:23AM0.78m | 2:41PM1.16m | 2:51AM0.86m | 3:01PM1.10m | 3:23AM0.95m | 3:16PM1.03m | ||||||||
Low Tide | 9:05PM0.45m | 5:41AM0.35m | 9:01PM0.43m | 6:21AM0.31m | 9:01PM0.41m | 6:58AM0.30m | 9:05PM0.41m | 7:33AM0.33m | 9:11PM0.43m | 8:09AM0.41m | 9:15PM0.45m | 8:43AM0.53m | 9:17PM0.47m | ||||||||
 |  |  | |  | | | |  | | | |  | | | | | | | | | |
 | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — |
 | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 12 | 12 | 12 | 11 | 13 | 13 | 12 | 14 | 14 | 13 | 11 | 13 | 11 | 13 | 12 | 11 | 12 | 12 | 11 |
Feels °C | 8 | 9 | 10 | 9 | 9 | 9 | 10 | 11 | 10 | 9 | 9 | 9 | 3 | 6 | 6 | 8 | 8 | 8 | 10 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 15 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 13 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SW 14 | SSW 14 | SSW 12 | SSW 12 | SSW 11 | SSW 10 |
| kJ | 8860 | 5099 | 2806 | 1872 | 1365 | 751 | 636 | 589 | 578 | 1676 | 2643 | 2372 | 1586 | 1275 | 1191 | 2423 | 3116 | 1824 | 1041 | 750 | 310 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | S 10 | S 9 | S 8 | SSW 20 | SSW 18 | SSE 8 | — | — | — | — | SW 18 | — | — | SSW 18 | SSW 16 | SSW 16 | SSW 20 |
| kJ | — | — | — | — | 226 | 81 | 48 | 336 | 360 | 6 | — | — | — | — | 157 | — | — | 178 | 223 | 196 | 670 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 23 | SSW 21 | SSE 8 | SSE 8 | — | — | — | — | — | SW 18 | — | — | — | SSW 24 | SSW 22 | SSW 14 |
| kJ | — | — | — | — | — | 21 | 45 | 21 | 11 | — | — | — | — | — | 323 | — | — | — | 54 | 181 | 178 |
Wind waves Height (m) Direction Period (s) | SSW 16 | — | — | — | — | — | — | — | — | NNE 3 | — | N 3 | NNW 4 | NW 4 | WSW 6 | SW 6 | — | — | — | — | NE 3 |
| kJ | 7916 | — | — | — | — | — | — | — | — | 3 | — | 8 | 18 | 24 | 38 | 109 | — | — | — | — | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 159 | 411 | 137 | 137 | 137 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 577 | 404 | 651 | 137 | 411 | 2 | 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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