Knights Surf Break

Lat Long: 35.54° S 138.68° E

Knights Surf Forecast and Surf Report

Issued: 8 pm 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Knights sea temperature is
14.4°C
0.1° 

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


Knights surf forecast from 23 Aug 2026:

  • Best quality surf: Friday 28 Aug, 12AM (local time) - 4.5ft (1.4m), 18s period, SW swell with offshore winds.
  • Most powerful swell: Sunday 30 Aug, 9PM (local time) - 8ft (2.5m), 15s period, SSW swell with 2,812 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 6AM (local time) - 5.5ft (1.7m), 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 Monday (Aug 24) at 6AM. The primary swell is predicted to be 1.7m and 14s period with a secondary swell of 0.1m and 21s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Knights in the next 16 days are 2.5m 15s and forecast to arrive on Sunday (Aug 30) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Aug 24) at 6PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 24th Aug)5.5ft (1.7m) 14s
Best Surf12AM (Fri 28th Aug)4.5ft (1.4m) 18s
Most Powerful 9PM (Sun 30th Aug)8ft (2.5m) 15s

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


The Lowdown

Alright, this is Rusty, and I’m looking at what’s coming up for Knights. We’ve got a bit of a slow start, but the second half of this forecast has some serious potential.

The first real surfing window opens up on Monday, the 24th. The morning is looking solid with a 5ft groundswell out of the SSW, with a long 14-second period, and it’s clean with a light offshore breeze. The energy is healthy (997). This is a quality morning. The afternoon gets a bit bumped by a stronger cross-offshore breeze, pushing the swell down to 4ft, but it’s still clean. The water temp is about average for the time of year, so no surprises there.

Tuesday the 25th is a write-off. Onshore winds from the SSW are cranking at 15 mph, with messy, blown-out 8ft to 8ft waves. Don’t bother.

Now, Wednesday the 26th is a real gem. The morning is glassy, with a 6ft SSW groundswell and a 13-second period. The energy is moderate (1091). This is excellent, clean surf for experienced surfers. The afternoon stays glassy with 6ft waves. This is the standout session of the first week.

Thursday the 27th is a good one too. The morning has clean 4ft waves with a cross-offshore breeze, and the afternoon bumps up to 4ft with a strong 14-second period and excellent energy (1007). Very clean.

The real fireworks start on Friday the 28th. The morning is a standout with a 6ft SSW groundswell, a very long 17-second period, and a clean offshore breeze. The energy is strong (2043). This is for experienced surfers—the long period means it’ll be powerful and lined up, but it might be a bit too straight for a beach break. The afternoon is a bit messier with a stronger cross-offshore wind.

The weekend of the 29th and 30th is mixed. Saturday morning is clean with 5ft SW swell, but the afternoon gets choppy. Sunday the 30th has a 4ft, very long period 18-second swell in the morning, which is usually better for reefs or points, but it’s clean.

Now, hold on to your board. Monday the 31st of August is the pick of the entire run. The morning is glassy, with a 8ft SSW groundswell and a 17-second period. The energy is very strong (3073). This is a big, powerful, clean swell. This is for experts only. The afternoon is a touch smaller with a cross-onshore wind, but the morning is unforgettable.

The first week of September looks great. The 1st is clean in the morning with 6ft SSW swell, and the 2nd is clean with 5ft swell. The 5th of September is a banger—the afternoon sees 8ft SSW swell with a 17-second period and very strong energy (3276) and a clean cross-offshore wind. The 6th of September is even bigger: 10ft SSW swell in the afternoon, strong energy (3543), and clean. This is massive, expert-only territory.

The last few days of the run, from the 7th of September, are blown out by strong onshore winds, so we’ll have to wait for that to pass.

Overall, the best on offer is the morning of Monday the 31st of August, and the afternoons of the 5th and 6th of September. Get out there, and remember, a long period swell like this is magic at a reef or point. Knights is a beach and reef setup, so pay attention to the lineup.

Rusty.

Short Range Forecast

Heavy rain (total 22mm), heaviest during Mon morning. Very mild (max 15°C on Sun night, min 11°C on Mon morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Fri afternoon. Very mild (max 18°C on Thu afternoon, min 11°C on Wed night). Wind will be generally light.

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
2
3
0
0
3
4
3
3
3
4
5
4
2
4
4
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
SSW
15
1.6
SSW
14
1.3
SSW
14
1.4
SSW
13
2.3
SSW
13
2.5
SSW
14
2.4
SW
14
1.8
SSW
13
1.7
SSW
12
1.3
SSW
11
1.2
SSW
14
1.3
SSW
14
1.4
SW
18
1.9
SSW
17
1.7
SSW
16
1.6
SW
15
1.4
SW
14
1.2
SW
13
1.1
SW
13
Wave Graph
Metric surfscale
Energy kJ
1537
982
653
669
1807
2405
2356
1060
871
459
530
607
1307
2041
1390
1163
752
525
424
Wind (km/h)
10
NNE
10
NNE
20
ENE
5
S
25
SSW
25
SSW
15
SW
5
W
5
SW
10
NNE
15
N
10
NNW
15
NNE
15
N
30
NNW
5
NW
5
ENE
15
SSE
15
SE
Wind State
off
off
cross-off
glassy
on
on
on
glassy
glassy
off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
cross-on
cross-on
High Tide
11:44AM1.18m
00:40AM0.59m
12:05PM1.20m
00:37AM0.61m
12:27PM1.20m
00:45AM0.65m
12:49PM1.19m
00:59AM0.70m
1:11PM1.16m
1:17AM0.77m
1:33PM1.12m
1:37AM0.86m
Low Tide
8:42PM0.45m
8:26PM0.43m
4:30AM0.48m
8:08PM0.40m
5:20AM0.39m
7:54PM0.38m
6:00AM0.31m
7:49PM0.36m
6:35AM0.27m
7:49PM0.35m
part cloud
light rain
light rain
mod rain
rain showers
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
light rain
light rain
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:46
6:45
6:43
6:41
6:41
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:49
5:50
5:50
5:51
5:52
5:52
 mm
5
5
10
2
2
1
Temp °C
15
13
11
13
14
13
12
14
14
11
17
18
16
16
13
13
15
16
14
Feels °C
12
11
7
9
9
8
9
12
12
9
13
15
13
12
8
12
13
13
12
  • 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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