Surf Forecasts:
Knights surf forecast from 26 Aug 2026:
- Best quality surf: Friday 28 Aug, 9AM (local time) - 6ft (1.9m), 17s period, WSW swell with glassy winds.
- Most powerful swell: Monday 31 Aug, 12PM (local time) - 8ft (2.4m), 19s period, SSW swell with 3,895 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 6AM (local time) - 3.5ft (1.0m), 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 Thursday (Aug 27) at 6AM. The primary swell is predicted to be 1.0m and 11s period with a secondary swell of 0.7m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Knights in the next 16 days are 2.4m 19s and forecast to arrive on Monday (Aug 31) at 12PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Tuesday (Sep 01) at 3PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Thu 27th Aug) | 3.5ft (1.0m) 11s |
| Best Surf | 9AM (Fri 28th Aug) | 6ft (1.9m) 17s |
| Most Powerful | 12PM (Mon 31st Aug) | 8ft (2.4m) 19s |
Table - best surf conditions forecast for Knights over the next 16 days.
The Lowdown
Listen up, folks. Rusty here with the full picture on Knights for the next 16 days. We've got a quiet start, so the first real surf shows on August 27th.
Thursday the 27th morning kicks it off with a 4ft SSW swell at 14 seconds, clean with a light NNW cross-off breeze. The afternoon stays clean at 5ft with a NW cross-off.
Friday the 28th morning is a beauty. A 6ft SSW groundswell at 17 seconds, with a glassy NNE breeze at just 3 mph. That’s as clean as it gets, and the power is building. That morning is the standout of the early days.
Saturday the 29th morning stays clean with a 5ft SW swell and a light ENE cross-off. The afternoon gets a bit bumpy with a SE cross-on. Sunday the 30th morning offers another clean 5ft SSW swell.
Monday the 31st morning is a big one. A 7ft SSW swell with offshore NE wind at 6 mph, glassy and powerful. That’s for the experienced only. The afternoon hits 8ft with a WNW cross breeze.
Then we hit a rough patch from Tuesday September 1st through Thursday the 3rd. Wind from the NW at 18 mph messes up the 5ft to 7ft SSW swells. Friday the 4th morning sees 12ft of SSW swell – way too big for this spot.
Saturday the 5th morning is another notable session: 10ft SSW swell, a 15-second period, and a cross-off NW breeze. Big, clean, but experts only.
Sunday the 6th is blown out by a 16ft SSW swell and onshore wind. Monday the 7th through Wednesday the 9th stays big, between 8ft and 16ft, but the wind is messy. Tuesday the 8th morning has a 16ft SW swell with a glassy NE wind – a total beast.
The last standout is Friday the 11th morning: a clean 8ft SSW swell with a 16-second period and a light NNW cross-off. That’s a clean, powerful finish.
The real gems are Friday the 28th morning for that glassy, 6ft swell, and Monday the 31st morning for the offshore, 7ft set. Pick your moments.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Fri morning, min 11°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Tue afternoon, min 11°C on Sun morning). Winds increasing (calm on Sun afternoon, strong winds from the NW by Tue morning). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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 14 | SW 14 | SW 18 | SSW 17 | SW 16 | SW 15 | SW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 17 | SSW 15 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SW 15 | SSW 15 | SSW 14 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 595 | 788 | 765 | 2171 | 1611 | 1163 | 834 | 669 | 640 | 775 | 980 | 2505 | 2055 | 3633 | 2285 | 1547 | 1125 | 1124 | 1117 | 833 | 1367 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | glassy | cross-on | glassy | glassy | cross-on | glassy | glassy | cross-on | glassy | off | glassy | off | cross-off | cross | glassy | cross | cross | cross-off |
High Tide | 12:49PM1.19m | 00:59AM0.70m | 1:11PM1.16m | 1:17AM0.77m | 1:33PM1.12m | 1:37AM0.86m | 1:53PM1.06m | 2:01AM0.95m | 2:12PM1.00m | 2:28AM1.04m | 2:26PM0.94m | 2:57AM1.11m | 2:31PM0.88m | 3:29AM1.14m | |||||||
Low Tide | 7:54PM0.38m | 6:00AM0.31m | 7:49PM0.36m | 6:35AM0.27m | 7:49PM0.35m | 7:09AM0.27m | 7:52PM0.34m | 7:43AM0.31m | 7:55PM0.34m | 8:15AM0.41m | 7:59PM0.34m | 8:46AM0.54m | 8:03PM0.33m | ||||||||
 | |  | | | | | | | | | | | | | | |  |  | | | |
 | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — |
 | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 15 | 17 | 17 | 15 | 15 | 15 | 12 | 15 | 14 | 12 | 18 | 18 | 16 | 19 | 20 | 13 | 14 | 14 | 13 |
Feels °C | 12 | 13 | 13 | 15 | 15 | 14 | 13 | 13 | 12 | 13 | 12 | 10 | 16 | 16 | 13 | 11 | 15 | 13 | 9 | 8 | 9 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SW 14 | SW 14 | SSW 17 | SW 16 | SW 15 | SW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 17 | SSW 15 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SW 15 | SSW 15 | SSW 14 | SW 13 |
| kJ | 595 | 788 | 765 | 2017 | 1611 | 1163 | 834 | 669 | 640 | 775 | 980 | 2505 | 2055 | 3633 | 2285 | 1547 | 1125 | 1124 | 1117 | 833 | 1367 |
Swell 2 Height (m) Direction Period (s) | SW 22 | SW 20 | SW 18 | WSW 17 | SSW 16 | WSW 14 | WSW 14 | SW 23 | SSW 21 | SSW 20 | SSW 20 | SSW 18 | SSW 19 | — | — | — | — | SSW 18 | — | — | — |
| kJ | 118 | 309 | 735 | 2171 | 1415 | 796 | 691 | 21 | 178 | 256 | 336 | 954 | 1147 | — | — | — | — | 486 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | SE 8 | — | — | — | — | — | — | — | — | SW 22 | WSW 20 | — | — | — | — | — | — | — | — |
| kJ | — | — | 2 | — | — | — | — | — | — | — | — | 165 | 664 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNE 3 | NW 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 3 | NW 4 | — | WSW 5 | WSW 6 | — |
| kJ | 1 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 | 35 | — | 56 | 103 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 1 | 0 | 0 | 33 | 0 | 0 | 137 | 0 | 0 | 164 | 0 | 0 | 0 | 0 | 1023 | 931 | 0 | 404 | 570 | 2 |
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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