Derrs Surf Break

Lat Long: 31.63° S 115.66° E

Derrs Surf Forecast and Surf Report

Issued: 1 pm 30 Aug 2026 (local time)

Forecast update in  hr  min

Today's Derrs sea temperature is
18.2°C
0.6° 

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


Derrs surf forecast from 30 Aug 2026:

  • Best quality surf: Friday 4 Sep, 11PM (local time) - 11ft (3.5m), 16s period, WSW swell with glassy winds.
  • Most powerful swell: Sunday 6 Sep, 2AM (local time) - 15ft (4.5m), 12s period, WSW swell with 6,600 kJ wave energy.
  • Next surfable swell (1★+): Sunday 30 Aug, 11PM (local time) - 7ft (2.2m), 16s period with WSW swell.

Best Forecast Surf Conditions for Derrs this week:

The surf forecast for Derrs over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 30) at 11PM. The primary swell is predicted to be 2.2m and 16s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Derrs in the next 16 days are 4.5m 12s and forecast to arrive on Sunday (Sep 06) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sun 30th Aug)7ft (2.2m) 16s
Best Surf11PM (Fri 4th Sep)11ft (3.5m) 16s
Most Powerful 2AM (Sun 6th Sep)15ft (4.5m) 12s

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


The Lowdown

G’day, Rusty here, and I’ve got a good long look at the charts for this spot. We’ve got a solid run of surf coming, but you’ll need to pick your moments carefully because the wind is gonna be a real character in this story.

The main event is a persistent, powerful SW groundswell that’s gonna be hammering the coast for the next couple of weeks. The wave energy is massive, getting up into the thousands – we’re talking serious water moving around. The water temp is sitting at 65°, which is pretty much what you’d expect for this time of year, nothing strange there.

Let’s start with the near future. Sunday afternoon the 30th of August, we’ve got a 8ft SW swell rolling in with a 17-second period – that’s proper long-period groundswell. The wind is light and offshore from the WSW, so Derrs is gonna be clean and glassy. That’s a real standout for a Sunday session. The energy is strong at 3022. It’s a bit on the bigger side for beginners, but anyone with a bit of experience is gonna love it.

Monday the 31st and Tuesday the 1st see the wind turning onshore or cross-shore, and the wave comments are calling it marginal. The swell drops a touch, but it’s still pumping. Wednesday and Thursday look average with bumpy conditions. Friday the 4th of September gets a bit of a boost, with the swell hitting 10ft to 12ft, but the wind is cross-onshore and choppy, so the quality is poor. The energy is absolutely massive, hitting 4963, but it’s just not gonna be clean for paddle surfing. This setup might be more interesting for the kite crew.

Now, let’s talk about the real gold. Look at Monday morning the 7th of September. The wind drops to a glassy calm from the SSE, just a slight air. The swell is a solid 10ft from the WSW with a 17-second period, and the energy is a monstrous 5089. The forecast says it’s exceptional for expert surfers, and I’m telling you, that’s the morning to clear your schedule. That’s for the experienced crew only – that size and power is no joke.

Then again on Tuesday morning the 8th of September, we get a light offshore breeze from the NE, and the wave comment says “clean.” Another 10ft, 17-second groundswell with 5046 energy. That’s a second straight morning of perfection for the guys who know what they’re doing.

Wednesday the 9th is still excellent, with a light cross-offshore breeze and an 8ft swell, but the energy is still huge at 3929. Thursday the 10th has a big morning with 10ft swell and 6295 energy, but it’s a cross-shore wind, so it won’t be as clean as the Monday and Tuesday sessions.

From the 11th of September onwards, the swell stays on, but the wind is mostly onshore or cross-onshore, and the quality drops back into the marginal zone. The energy is still big, but it’s gonna be a bit of a chop fest. The last few days of the outlook, from the 14th, look poor with strong onshore winds.

So, if you’re looking for a session, the Sunday afternoon the 30th is a great start. But the real standout, the one you don’t want to miss, is Monday morning the 7th of September. That’s the one. Get on it.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Sun afternoon, min 13°C on Tue morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Thu night. Very mild (max 17°C on Thu morning, min 12°C on Fri night). Winds decreasing (fresh winds from the W on Thu night, calm by Fri night).

Sun
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
PM
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
1
0
3
2
3
2
3
3
2
0
0
0
2
5
3
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
WSW
17
2.1
WSW
16
2.1
WSW
17
2
WSW
17
1.9
WSW
16
2.1
WSW
16
1.9
WSW
15
1.8
WSW
14
2
WSW
14
2
WSW
13
2
WSW
13
2.2
WSW
14
2.1
WSW
14
3
WSW
14
3
WSW
14
3.5
WSW
15
3
WSW
15
3
WSW
14
1.8
WSW
14
4.5
WSW
12
Wave Graph
Metric surfscale
Energy kJ
3022
2128
2564
2251
1750
2023
1557
1283
1474
1329
1289
1879
1809
3680
3761
4963
4432
3334
1195
6600
Wind (km/h)
10
WSW
5
NW
15
WNW
20
W
25
S
15
S
15
SSW
5
SW
10
SW
10
WSW
10
NNW
20
NW
30
WNW
35
W
25
SW
15
SSW
5
N
20
NNW
30
NW
50
SSW
Wind State
on
cross
cross-on
on
cross-on
cross
cross-on
cross-on
on
on
cross
cross
cross-on
cross-on
cross-on
cross-on
glassy
cross
cross
cross-on
High Tide
11:10PM0.46m
10:37AM0.39m
11:25PM0.51m
10:41AM0.31m
11:49PM0.56m
00:24AM0.59m
1:20AM0.61m
3:05AM0.61m
4:52AM0.63m
Low Tide
4:42PM0.20m
5:12AM0.25m
4:38PM0.22m
6:22AM0.25m
4:21PM0.23m
2:55PM0.20m
1:45PM0.13m
2:05PM0.06m
2:35PM0.01m
clear
clear
cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
part cloud
part cloud
clear
part cloud
rain showers
part cloud
part cloud
cloud
cloud
rain showers
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
6:35
6:33
6:31
6:31
6:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:59
6:00
6:00
6:00
6:00
6:01
6:02
 mm
4
2
14
Temp °C
22
18
18
18
18
14
15
14
15
16
16
17
17
17
16
14
13
14
16
14
Feels °C
22
18
16
15
16
11
11
11
12
13
14
12
11
12
11
9
10
10
10
10
  • 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 Derrs Surf forecast

The above surf forecast table for Derrs provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Derrs can be found by selecting the local surf guide option on the grey menu. Our Derrs 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 (Derrs) 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 Derrs 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.

Are you planning a holiday in Perth City Coast? If you are looking for accommodation near Derrs, camping, hotels and holiday cottages in Perth City Coast, consider staying in Perth which is 41 km (25 miles) away. Other places in and around Perth City Coast where you can find information about places to rent, and car hire include Fremantle which is 48 km (30 miles) away, Canning Vale, Gosnells and Kwinana.

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