Castles Beach Surf Break

Lat Long: 21.42° N 157.74° W

Castles Beach Surf Forecast and Surf Report

Issued: 1 am 05 Nov 2026 (local time)

Forecast update in  hr  min

Today's Castles Beach sea temperature is
26.5°C
0.1° 

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


Castles Beach surf forecast from 5 Nov 2026:

  • Best quality surf: No days rated 1★ or higher at Castles Beach in the next 16 days. The closest to surfable is Thursday 19 Nov, 11PM (local time) – 8ft (2.5m), 8s period, ENE swell with cross-onshore winds.
  • Most powerful swell: Thursday 19 Nov, 11PM (local time) - 8ft (2.5m), 8s period, ENE swell with 804 kJ wave energy.
  • Next surfable swell (1★+): None forecast at Castles Beach before Saturday 21 Nov. Conditions stay below 1★ throughout, with swell peaking at 8ft (2.5m), 8s on Thursday 19 Nov.

Best Forecast Surf Conditions for Castles Beach this week:

The most powerful waves expected at Castles Beach in the next 16 days are 2.5m 8s and forecast to arrive on Thursday (Nov 19) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 17s period and expected on Wednesday (Nov 11) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Thu 19th Nov)8ft (2.5m) 8s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Fri night. Warm (max 25°C on Thu morning, min 24°C on Thu morning). Mainly strong winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 25°C on Sun afternoon, min 24°C on Sun morning). Mainly strong winds.

Thursday
5
Friday
6
Saturday
7
Sunday
8
Monday
9
Tuesday
10
Wednesday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
ENE
8
2.1
ENE
8
2.1
ENE
7
2.4
ENE
7
2.4
ENE
8
2.3
ENE
8
2.2
ENE
8
2.1
ENE
7
2
ENE
6
2
E
7
1.9
ENE
6
2.3
ENE
7
2.2
ENE
7
2
ENE
7
1.8
E
7
1.7
ENE
7
1.6
ENE
6
2.1
ENE
7
2.1
E
7
1.9
ENE
7
2
E
7
Wave Graph
Metric surfscale
Energy kJ
621
509
482
607
709
604
569
431
300
388
289
498
474
392
320
293
218
397
445
352
377
Wind (km/h)
40
ENE
35
ENE
35
ENE
35
NE
40
NE
40
NE
40
ENE
35
ENE
35
ENE
30
ENE
40
NE
40
ENE
40
ENE
40
ENE
35
ENE
35
ENE
40
NE
40
ENE
35
ENE
40
ENE
40
ENE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
on
on
cross-on
on
on
on
on
High Tide
11:44AM0.65m
1:13AM0.73m
12:12PM0.61m
1:46AM0.80m
12:38PM0.57m
2:18AM0.85m
1:02PM0.53m
2:50AM0.86m
1:24PM0.50m
3:23AM0.86m
1:45PM0.48m
3:58AM0.84m
2:02PM0.46m
4:36AM0.81m
Low Tide
6:21PM0.13m
7:08AM0.37m
6:41PM0.10m
7:56AM0.37m
7:03PM0.07m
8:40AM0.38m
7:27PM0.05m
9:22AM0.38m
7:52PM0.05m
10:03AM0.40m
8:18PM0.05m
10:47AM0.41m
8:46PM0.07m
clear
clear
part cloud
part cloud
part cloud
rain showers
clear
clear
part cloud
clear
part cloud
part cloud
clear
part cloud
clear
part cloud
clear
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
—
—
6:35
—
—
6:37
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—
6:37
—
—
6:37
—
—
6:37
—
—
6:39
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—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
5:52
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—
5:52
—
—
5:51
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—
5:51
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—
5:51
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—
5:50
—
—
5:50
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 mm
—
—
—
—
—
3
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
25
25
25
25
25
24
24
25
25
24
25
24
25
24
25
24
24
24
25
24
24
Feels °C
21
21
22
23
22
20
20
21
21
20
22
20
21
20
21
20
20
19
20
20
20
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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Information about the Castles Beach Surf forecast

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

Castles is 2 km (1 miles) from Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.

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