Surf Forecasts:
Knights surf forecast from 15 Jul 2026:
- Best quality surf: Thursday 16 Jul, 12PM (local time) - 7ft (2.2m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 16 Jul, 3PM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,182 kJ wave energy.
- Next surfable swell (1★+): Wednesday 15 Jul, 6PM (local time) - 7.5ft (2.3m), 14s 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 15) at 6PM. The primary swell is predicted to be 2.3m and 14s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Knights in the next 16 days are 2.5m 16s and forecast to arrive on Thursday (Jul 16) at 3PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Jul 20) at 3PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Wed 15th Jul) | 7.5ft (2.3m) 14s |
| Best Surf | 12PM (Thu 16th Jul) | 7ft (2.2m) 14s |
| Most Powerful | 3PM (Thu 16th Jul) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Knights over the next 16 days.
The Lowdown
Alright, Rusty here again, let’s break it down in feet and miles per hour.
We’ve got a solid run of swell heading into Knights over the next couple weeks. The real standout is right at the start: Thursday the 16th and Friday the 17th. Those days are the ones to clear your schedule for—clean, powerful, and glassy conditions.
Water’s sitting at 58°F, which is about normal for the season.
Wednesday the 15th kicks off with waves around 8 ft from the SSW, but the morning has a crosswind and the afternoon is onshore, so it’s messy. Not your day.
Thursday morning the 16th is where it’s at. Clean offshore wind from the NNE, swell holding at 8 ft from the SSW with a long 15-second period, and the energy’s pumping at 2754. This is advanced-only territory. By Thursday afternoon, it goes glassy, the period stretches to 16 seconds, and energy jumps to 3182. That’s the session to remember—dead calm, long-period groundswell wrapping into the beach and reef setup.
Friday the 17th keeps it going. Morning glassy with 7 ft swell from the SSW, 16-second period, energy at 2008. The afternoon stays glassy, dropping slightly to 6 ft but still with that long period. Two days of premium surf, though expect crowds.
Saturday the 18th drops to 4 ft with a shorter 14-second period, but it’s glassy or offshore all day. Clean and fun, just smaller. Sunday the 19th through Tuesday the 22nd offers surf between 2 ft and 5 ft with clean to cross-offshore breezes. Not bad for a log, but nothing special.
Wednesday the 22nd gets bumpy with moderate crosswinds. Thursday the 23rd brings a new pulse—8 ft to 10 ft—but the wind shifts onshore from the south, making it choppy. That big swell holds into Friday the 24th and Saturday the 25th, hitting 12 ft on Saturday with energy at 6242. Too big for the break unless you’re a pro, and the wind is onshore or cross-on.
Sunday the 26th offers a glassy morning with 8 ft swell, but the afternoon turns rainy and onshore. After that, the last few days of July into the 30th see the swell drop under 5 ft with mostly cross or onshore winds. Not worth the drive.
Bottom line: Thursday the 16th and Friday the 17th at Knights are your golden window. Don’t miss that Thursday morning glass-off.
- Rusty
Short Range ForecastMostly dry. Very mild (max 14°C on Fri morning, min 9°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Sat afternoon, min 12°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
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 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 15 | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SW 13 | SSW 13 | SSW 12 | SSW 18 | SSW 16 | SSW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2534 | 2160 | 2061 | 2754 | 3182 | 2147 | 2008 | 1629 | 961 | 493 | 394 | 341 | 215 | 216 | 339 | 436 | 472 | 395 | 509 | 623 | 540 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | off | off | glassy | cross-off | glassy | glassy | off | off | glassy | off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:42PM1.42m | 1:10AM0.59m | 2:07PM1.36m | 1:35AM0.66m | 2:29PM1.27m | 2:07AM0.73m | 2:49PM1.19m | 2:44AM0.81m | 3:06PM1.12m | 3:24AM0.88m | 3:20PM1.06m | 4:08AM0.94m | 3:29PM1.02m | ||||||||
Low Tide | 10:34PM0.54m | 5:42AM0.36m | 10:20PM0.57m | 6:28AM0.35m | 10:00PM0.58m | 7:10AM0.39m | 9:47PM0.57m | 7:49AM0.47m | 9:45PM0.54m | 8:25AM0.58m | 9:53PM0.52m | 8:53AM0.72m | 10:07PM0.51m | ||||||||
 | |  | | | | | | | | |  |  |  |  | | | | | | | |
 | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — |
 | — | 5:20 | — | — | 5:20 | — | — | 5:21 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 12 | 11 | 13 | 13 | 12 | 14 | 14 | 12 | 15 | 16 | 14 | 16 | 16 | 15 | 16 | 15 | 15 | 17 | 16 | 16 |
Feels °C | 11 | 11 | 10 | 12 | 12 | 10 | 13 | 12 | 10 | 14 | 15 | 12 | 13 | 14 | 12 | 12 | 12 | 12 | 13 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 15 | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SW 13 | SSW 13 | SSW 12 | SSW 11 | SSW 16 | SSW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 |
| kJ | 2534 | 2160 | 2061 | 2754 | 3182 | 2147 | 2008 | 1629 | 961 | 493 | 394 | 341 | 215 | 121 | 339 | 436 | 472 | 395 | 509 | 623 | 540 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SW 22 | SW 20 | SSW 18 | S 10 | SSW 10 | S 10 | S 10 | — | — | NW 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 18 | 97 | 216 | 53 | 35 | 17 | 7 | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SW 22 | SW 20 | SW 12 | SW 13 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 18 | 186 | 69 | 82 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NNE 3 | — | NNE 2 | NNE 3 | NE 3 | NNE 2 | N 3 | NW 4 | NW 3 | — | — | SW 4 |
| kJ | — | — | — | — | — | — | — | — | — | 2 | — | 1 | 1 | 2 | 1 | 2 | 8 | 2 | — | — | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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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