Knights Surf Break

Lat Long: 35.54° S 138.68° E

Knights Surf Forecast and Surf Report

Issued: 2 am 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Knights sea temperature is
14.7°C
0.4° 

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, 6PM (local time) - 8ft (2.5m), 16s period, SSW swell with glassy winds.
  • Most powerful swell: Thursday 10 Sep, 12PM (local time) - 10ft (3.0m), 16s period, SSW swell with 4,883 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 Thursday (Sep 10) at 12PM. Winds are predicted to be cross-shore 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 (Sep 13) at 12PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 11th Sep)8ft (2.5m) 15s
Best Surf 6PM (Fri 11th Sep)8ft (2.5m) 16s
Most Powerful12PM (Thu 10th Sep)10ft (3.0m) 16s

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


The Lowdown

Right, let’s have a look at what’s in store for us here.

Alright, the only spot lighting up the forecast is Knights, a beach and reef setup that’s fairly consistent but really only for the advanced crew. The water temperature is sitting at 59°F – that’s pretty normal for this time of year, so nothing weird going on there.

We’ve got a bit of a slow start, but the first proper action kicks off Thursday the 10th in the morning. A solid 12ft SSW groundswell is rolling in, with a very long 16-second period. The combined energy is massive (5616) – that’s a lot of power. Problem is, this swell is too big for the break, and even though the wind is a light cross-shore, it’s probably going to be hairy. The morning is the only window worth mentioning, but it’s for experts only.

Moving on to Friday the 11th – we’ve got a cleaner picture. The morning brings a 7ft SSW swell, 14-second period, and a light cross-offshore wind from the ENE. That’s clean, manageable, and the wave energy is still strong (2500). The afternoon bumps up to 8ft but the wind turns cross, adding a bit of ripple. Not a standout, but a solid session.

Saturday the 12th is where it’s at. The morning is clean with a 7ft SSW swell, 15-second period, and a light offshore wind from the NE. Then the afternoon – glassy conditions, NW wind at 3 mph, with a 6ft SSW swell. The combined energy is still pumping (1599) and the surf is clean. This is the best on offer in the first week. Get out there.

Sunday the 13th sees the swell drop to 4-4ft, but the wind is cross-offshore and moderate. It’s okay, but nothing special.

After a flat couple of days Monday and Tuesday, we get a big pulse back on Tuesday the 15th – 10ft SSW swell, 15-second period, but the wind is cross-onshore, making it choppy. Not great.

Then Wednesday the 16th morning shapes up nicely: 8ft SSW swell, 16-second period, clean cross-offshore wind from the ENE. Strong energy (3514) and clean conditions. That’s a quality session for the experienced.

Thursday the 17th and Friday the 18th keep the trend going with 5ft to 7ft swells, light winds, and glassy conditions on Friday afternoon. Really nice, mellow windows.

The real standout, though, is the very end of the forecast. Friday the 25th afternoon – a 10ft SSW groundswell with a 17-second period, glassy wind from the NNE, and the combined energy is massive (5451). The forecast says exceptional conditions for expert surfers, and that’s the one to circle on the calendar. It’s a long way out, but it looks like a proper session.

Keep in mind, Knights is an advanced break and it can get crowded often. The swell direction is straight from the SSW, which is near the optimum SSE, so it’s working well.

For the big swells over 8ft, only the experts should be out there. The long periods (over 15 seconds) mean the waves will have more energy and longer lulls, which is good for paddling out, but at a beach-and-reef setup like this, it can be a bit tricky.

That’s the story. Get on the Saturday morning glass or aim for that Friday the 25th session.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Sat morning, min 8°C on Thu morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Sun morning, min 6°C on Tue night). Mainly fresh winds.

Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
AM
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
4
4
4
4
2
2
1
0
0
1
3
2
3
5
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3.5
SSW
16
3
SSW
16
2.5
SSW
15
2.2
SSW
14
2.5
SSW
16
2.4
SSW
16
2.1
SSW
15
1.9
SSW
15
1.6
SSW
15
1.3
SSW
16
1.2
SSW
16
1
SSW
14
0.9
SSW
14
0.8
SSW
13
1.7
SW
11
3
SSW
15
3
SSW
14
2.5
SSW
14
2.5
SSW
16
2.5
SSW
15
2.3
SSW
15
Wave Graph
Metric surfscale
Energy kJ
5616
4056
2746
1835
3393
2968
1976
1599
1067
892
666
437
290
222
754
3692
3388
2908
3514
3424
2212
Wind (km/h)
15
ESE
15
SE
5
ENE
10
ENE
10
ESE
5
NE
10
NE
5
NNW
15
NNE
20
NNW
20
NW
15
WNW
15
W
15
WSW
15
S
15
SE
20
SSE
10
ESE
15
ENE
10
SE
10
NNE
Wind State
cross
cross-on
glassy
cross-off
cross
off
off
glassy
off
cross-off
cross-off
cross
cross-on
cross-on
on
cross-on
cross-on
cross
cross-off
cross
off
High Tide
12:49PM1.13m
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
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
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
10
11
11
15
16
14
21
21
20
24
23
13
17
17
13
12
11
10
13
14
12
Feels °C
6
8
9
12
14
13
18
19
16
18
20
12
14
14
10
8
7
7
10
11
9
  • Map Icons:
  • Break
  • 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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