Knights Surf Break

Lat Long: 35.54° S 138.68° E

Knights Surf Forecast and Surf Report

Issued: 2 pm 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Knights sea temperature is
14.9°C
0.7° 

Knights surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Knights surf forecast from 10 Sep 2026:

  • Best quality surf: Friday 11 Sep, 9PM (local time) - 8ft (2.5m), 16s period, SSW swell with glassy winds.
  • Most powerful swell: Wednesday 16 Sep, 9AM (local time) - 10ft (3.0m), 16s period, SSW swell with 4,327 kJ wave energy.
  • Next surfable swell (1★+): Friday 11 Sep, 12AM (local time) - 8ft (2.5m), 15s 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 Friday (Sep 11) at 12AM. The primary swell is predicted to be 2.5m and 15s 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 3.0m 16s and forecast to arrive on Wednesday (Sep 16) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Sep 13) at 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 11th Sep)8ft (2.5m) 15s
Best Surf 9PM (Fri 11th Sep)8ft (2.5m) 16s
Most Powerful 9AM (Wed 16th Sep)10ft (3.0m) 16s

Table - best surf conditions forecast for Knights over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on the table for the next couple of weeks. We’ve got one spot lighting up the charts, and that’s Knights, an advanced break with a beach and reef setup. It’s fully exposed to the south, so when the energy lines up, it can be a proper machine. Right now, the water is sitting at 59°F which is about average for this time of year, so no shock to the system.

First up, things kick off this Thursday the 10th with a solid pulse. Swell is hitting 10 ft from the SSW with a 16-second period – that’s a long, powerful groundswell with serious grunt (combined energy of 4069). The catch is the wind is cross-on from the SE, so it’ll be a bit lumpy and choppy. Not the cleanest, but for the experienced crew there’s plenty of push. That size is getting into expert territory.

Friday the 11th looks much cleaner. The morning has a cross-off breeze from the ENE, light wind, and the swell drops to a still-juicy 7 ft from the SSW at 14 seconds. Clean conditions, proper energy (2500). The afternoon gets a little more cross-shore, but still rideable.

Saturday the 12th is where we see a real standout. Morning has a clean offshore from the NNE, 7 ft SSW swell at 15 seconds. Then the afternoon goes glassy – dead calm, NW wind at just 3 mph. That’s as good as it gets. Swell is 6 ft, long period, and the combined energy is 1450. For an advanced break like Knights, these are prime conditions. Crowds are likely here often, but when it’s that clean, it’s worth the company.

Sunday the 13th drops off quickly. The morning has a fresh 19 mph cross-off that’ll chop things up, and the swell is down to 4 ft. The afternoon turns cross-on and messy. Not worth paddling out.

From Monday the 14th through Tuesday the 15th, it’s mostly small, weak, and onshore. The swell bumps back up to 10 ft on the 15th, but the wind is cross-on from the SSE, making it a choppy mess. Leave it.

Now, Wednesday the 16th – this is another big highlight. Morning session sees 10 ft from the SSW, 16-second period, combined energy of 4327, and best of all, a light cross-off breeze from the ENE. That’s clean, powerful, and solid. Expert territory again, but for those who can handle it, this will be firing.

Thursday the 17th offers more goodness. Morning has a light offshore from the NE, 7 ft SSW swell at 14 seconds. Afternoon goes glassy again – zero wind, 6 ft swell. That’s another beautiful window.

Friday the 18th and Saturday the 19th see the swell drop into the 5 ft to 5 ft range, but the wind stays cross-off from the NNW. Clean, manageable, but not the standout days. Good for a session if you’re keen.

Then we hit a dry spell. Sunday the 20th and Monday the 21st morning start tiny and weak. By Monday afternoon though, the swell rebuilds to 6 ft from the SSW with an offshore NNE breeze. That’s a nice surprise – clean, glassy start to the week.

The 21st afternoon is excellent: 6 ft, offshore, clean. Then Tuesday the 22nd turns windy and marginal. Wednesday the 23rd gets messy with fresh cross-shore winds, and from Thursday the 24th onward, it’s a write-off. The 24th afternoon has a 21 ft monster swell, but with onshore storm winds and rain, that’s a total no-go – more of a kite surfing spectacle than anything for a paddle surfer.

To sum it up: the absolute best windows are Saturday the 12th afternoon and Wednesday the 16th morning. Both offer clean, powerful, long-period SSW groundswell with glassy or offshore wind. That’s your swell-chasing gold. The second week has a few clean moments on the 21st, but nothing that matches the first week’s quality.

This is Rusty, signing off.

Short Range Forecast

Mostly dry. Warm (max 22°C on Sat morning, min 9°C on Thu night). Winds increasing (calm on Thu night, fresh winds from the NW by Sun morning).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Sun afternoon, min 6°C on Tue night). Wind will be generally light.

Thu
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
4
4
4
5
4
4
4
1
0
1
0
1
2
2
2
4
5
3
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SSW
16
2.5
SSW
15
2.2
SSW
14
2.5
SSW
16
2.4
SSW
16
2.1
SSW
15
1.8
SSW
15
1.6
SSW
15
1.3
SSW
16
1.3
SSW
16
1
SSW
15
1.2
SSW
13
1.3
SW
12
2
SW
12
3
SSW
14
3
SSW
15
2.5
SSW
14
3
SSW
16
3
SSW
15
2.4
SSW
15
Wave Graph
Metric surfscale
Energy kJ
4056
2746
1835
3062
3005
1976
1450
1081
788
768
443
472
440
1182
3051
3319
3033
4327
3618
2542
Wind (km/h)
15
SE
5
ENE
10
ENE
10
ESE
5
NNE
10
NNE
5
NNW
15
NNE
30
NW
15
WSW
10
WNW
15
W
10
WSW
15
SSW
15
SSE
15
SSE
10
ESE
10
E
10
SE
5
NE
Wind State
cross-on
glassy
cross-off
cross
off
off
glassy
off
cross-off
cross-on
cross
cross-on
cross-on
on
cross-on
cross-on
cross
cross-off
cross-on
glassy
High Tide
00:46AM0.77m
1:06PM1.06m
1:02AM0.88m
1:20PM1.00m
1:23AM0.98m
1:33PM0.94m
1:48AM1.06m
1:45PM0.90m
2:15AM1.12m
1:56PM0.88m
2:44AM1.15m
2:04PM0.86m
3:14AM1.14m
Low Tide
7:50PM0.48m
6:11AM0.36m
7:22PM0.45m
6:46AM0.33m
7:10PM0.40m
7:17AM0.34m
7:11PM0.33m
7:46AM0.39m
7:20PM0.28m
8:13AM0.46m
7:33PM0.25m
8:39AM0.56m
7:47PM0.24m
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:20
6:18
6:16
6:16
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:01
6:01
6:02
6:04
6:04
6:05
6:06
 mm
Temp °C
11
11
15
16
14
22
21
21
21
18
12
17
16
13
12
12
10
12
11
9
Feels °C
8
9
12
13
13
19
19
15
15
15
11
14
13
10
8
8
7
9
8
7
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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