Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 1 am 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
27.2°C
0.2° 

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


Sandy Beach surf forecast from 11 Sep 2026:

  • Most powerful swell: Friday 18 Sep, 2AM (local time) - 3.5ft (1.0m), 18s period, SSW swell with 644 kJ wave energy.

Best Forecast Surf Conditions for Sandy Beach this week:

The most powerful waves expected at Sandy Beach in the next 16 days are 1.0m 18s and forecast to arrive on Friday (Sep 18) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 18s period and expected on Wednesday (Sep 16) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Fri 18th Sep)3.5ft (1.0m) 18s

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


The Lowdown

Alright crew, Rusty here, giving you the rundown for Sandy Beach in feet and miles per hour.

Let’s be real – this stretch is a bummer. From Friday the 11th all the way to the morning of Monday the 23rd of September, that’s a 12-day stretch with nothing worth paddling for. The wind is almost always cross or cross-on from the ENE or NE, and it’s howling at 15 to 25 mph, sometimes stronger. The surface is chopped up and lumpy, no good.

Swell heights run from 2 ft to 5 ft, but the period is short, mostly 6 to 11 seconds, so the waves have no power. The combined energy is weak to moderate, with numbers like 91 up to 337 – not enough to get excited about. Water temp is 81°, which is dead average for this time of year.

On Monday the 23rd of September, the afternoon edges up to “marginal.” You get a 7 ft swell from the ENE, 9-second period, with a lighter cross wind from the NE at 15 mph. Still not clean, but the energy jumps to 834 – that’s moderate to strong. An intermediate surfer might find something rideable.

Thursday the 24th of September also shows marginal. Swell around 6-7 ft from the ENE, period 8-9 seconds, with a light S to SSE wind at 9 mph – cross-on. Energy stays strong, around 843 to 901. Not perfect, but you could scratch a few.

No true standouts here. No glassy offshore days, no long-period groundswell. The wind is the problem every day. If you’ve got a kite, the strong cross winds and lumpy water might be your thing. For surfing? Leave the board at home.

The long-range stuff is always a bit iffy, but right now it’s a long dry spell.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Fri afternoon, min 24°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Tue morning, min 25°C on Mon morning). Mainly strong winds.

Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
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)
0.7
ENE
11
1.1
E
11
1.1
ENE
10
0.9
ENE
10
0.7
ENE
10
0.8
NNE
9
0.9
NE
9
0.8
NNE
9
0.7
NE
9
0.7
NE
8
1
NE
8
0.4
SSW
13
0.9
NE
8
1
NE
8
0.8
SSW
19
1.5
ENE
6
0.9
SSW
18
1.8
ENE
7
2.2
ENE
8
2
ENE
9
1
SSW
18
Wave Graph
Metric surfscale
Energy kJ
128
286
245
169
98
99
115
99
77
74
129
68
84
108
470
183
541
340
614
603
644
Wind (km/h)
25
ENE
25
NE
20
ENE
20
ENE
20
NE
20
ENE
25
ENE
25
NE
20
NE
30
ENE
25
NE
20
NE
25
ENE
30
NE
30
ENE
40
ENE
40
ENE
40
ENE
40
ENE
40
ENE
35
ENE
Wind State
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
High Tide
3:13PM0.59m
3:51AM0.55m
3:42PM0.51m
4:32AM0.57m
4:10PM0.44m
5:15AM0.59m
4:37PM0.37m
6:02AM0.58m
5:04PM0.30m
6:56AM0.56m
5:30PM0.25m
8:04AM0.54m
6:18PM0.21m
Low Tide
9:14AM0.08m
9:49PM0.03m
10:05AM0.12m
10:11PM0.04m
10:58AM0.16m
10:34PM0.05m
11:57AM0.20m
10:58PM0.06m
1:10PM0.23m
11:24PM0.09m
2:59PM0.23m
11:56PM0.11m
5:49PM0.21m
00:44AM0.14m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:16
6:16
6:16
6:16
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:36
6:35
6:34
6:32
6:31
6:30
 mm
Temp °C
25
26
25
25
25
25
25
25
25
25
25
25
26
26
26
26
26
26
26
26
26
Feels °C
23
25
25
24
24
25
24
24
25
24
23
24
26
25
25
25
24
24
24
24
24
  • 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 Sandy Beach Surf forecast

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

Sandy's Beach is 15 km (9 miles) from the city of 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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