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Surf Forecasts:

Castles surfForecast / SA – Nullarbor / Australia

information circle12 Day Weather and Surf, issued 3 am Saturday 17 Jan 2026 ACDT
Forecast update in hr  min  s Forecast update imminent
Castles surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castles sea temperature is
20.2° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Castles this week:

The surf forecast for Castles over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jan 18) at 4AM. The primary swell is predicted to be 0.7m and 15s period with a secondary swell of 0.3m and 7s. Another secondary swell of 0.5m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Castles in the next 12 days are 1.6m 22s and forecast to arrive on Tuesday (Jan 20) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Thursday (Jan 22) at 10PM.

Wave TypeTime (ACDT) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sun 18th Jan)2.5ft (0.7m) 15s
Best Surf 4AM (Sun 18th Jan)2.5ft (0.7m) 15s
Most Powerful 1PM (Tue 20th Jan)5ft (1.6m) 22s

Table - best surf conditions forecast for Castles over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 28°C on Sun morning, min 17°C on Mon night). Winds increasing (light winds from the ESE on Sat night, fresh winds from the S by Mon night).

Days 3-6 Weather Summary Mostly dry. Warm (max 26°C on Thu night, min 17°C on Tue night). Winds decreasing (strong winds from the SSE on Tue night, light winds from the ESE by Thu night).

Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
1
2
0
0
0
0
0
0
0
1
1
0
1
1
0
0
0
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
SW
0.6
SW
0.7
SW
0.7
SW
1
SSW
0.7
SW
0.8
SW
0.7
SW
1.6
SSW
1.5
SSW
1.5
SSW
1.3
SW
1.3
SW
1.2
SW
1.1
SW
0.9
SW
0.8
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
Period(s) (?)131314151514131313132018171615141413131212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)104103206215468200212171811722190110069787194793412181361309690
Wind
(km/h)
20
SE
25
SSE
15
SE
15
NNE
25
S
20
S
30
S
35
S
35
S
30
S
35
S
40
SE
35
SE
35
SSE
25
SSE
20
SE
25
S
15
ESE
25
N
10
ESE
20
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		crosscross-
off		cross-
off		cross-
on		cross-
on		crosscrosscrosscrosscrosscross-
off		cross-
off		crosscrosscross-
off		crosscross-
off		cross-
off		cross-
off		off
High Tide
/ height (m)
1:19PM
0.71
1:26AM
1.35
1:37PM
0.78
1:50AM
1.43
1:57PM
0.84
2:13AM
1.47
2:19PM
0.89
2:37AM
1.47
2:43PM
0.93
3:00AM
1.43
3:08PM
0.96
3:22AM
1.34
3:34PM
0.97
3:42AM
1.20
Low Tide
/ height (m)
6:39PM
0.18
8:11AM
0.13
7:06PM
0.09
8:28AM
0.08
7:33PM
0.02
8:47AM
0.06
7:59PM
-0.02
9:07AM
0.04
8:27PM
-0.02
9:27AM
0.05
8:55PM
0.02
9:46AM
0.08
9:23PM
0.11
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Sunrise6:48--6:48--6:48--6:50--6:50--6:52--6:52--
Sunset-8:46--8:46--8:45--8:45--8:45--8:45--8:45-
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C202019282420202018202120201918232326393732
Feels °C (?)171717252119161514171613151414212022333426
  • 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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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Castles surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Castles at:
surf-forecast.com

Information about the Castles Surf forecast

The above surf forecast table for Castles provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Castles can be found by selecting the local surf guide option on the grey menu. Our Castles 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 (Castles) 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 Castles 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 Nullarbor? If you are looking for accommodation near Castles, camping, hotels and holiday cottages in Nullarbor, consider staying in Thevenard which is 64 km (40 miles) away.

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