Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 1 am 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
27.0°C
0.1° 

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 8 Sep 2026:

  • Most powerful swell: Tuesday 8 Sep, 8AM (local time) - 8ft (2.5m), 10s period, SSW swell with 1,569 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 2.5m 10s and forecast to arrive on Tuesday (Sep 08) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 12s period and expected on Tuesday (Sep 08) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Tue 8th Sep)8ft (2.5m) 10s

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


The Lowdown

Alright, this is Rusty checkin' in from the coast, and I gotta be straight with you – it’s a tough outlook for Sandy Beach. We're lookin' at a long, lean 16-day window where the ocean just isn't cooperating. The first proper surf recommendation doesn't roll around until Tuesday morning, the 8th of September, and even then, it's a bit of a washout.

To start, Tuesday morning the 8th brings rain showers and a stiff 19 mph cross-on shore wind from the SSW. That's makin' a mess of a 8 ft SSW swell. There's a ton of energy in the water – we're talkin' strong conditions (2301) – but with that onshore blow, it's gonna be lumpy and poor. The water temp sits at 81°, pretty much average for this time of year, nothin' crazy there. Tuesday afternoon the wind backs off a notch but stays cross-shore, the swell drops to 6 ft from the ENE with a better 11-second period, but it's still only marginal. Wednesday the 9th is more of the same: small 3 ft SSW swell, long period groundswell, but cross-shore winds keep it from gettin' clean. Thursday the 10th is hopeless – short period 5 ft ENE slop with 19 mph cross-onshore wind.

From there, it’s pretty much a dead zone. Friday the 11th through until Monday the 14th of September, every session is listed as poor surf. The swell barely gets to 3 ft, winds stay cross or cross-onshore, and the quality just isn’t there. The combined energy drops right off into the low two-digit and three-digit range (243, 339, 131), tellin' you the ocean's just flat and weak.

The second week doesn’t get any better. From Tuesday the 15th right through to Wednesday the 23rd of September, it’s a consistent run of poor surf. Winds are strong, mostly 12 to 22 mph from the ENE or NE, keepin' everything messy with a cross-chop. The swell heights hover around 1 ft to 5 ft, but with short periods and those onshore conditions, there's no quality. One to watch: Wednesday morning the 16th sees a tiny 3 ft swell but with a very long 18-second period from the SSW. That's a classic groundswell, but with only 671 in energy and a cross-onshore breeze, it's likely just gonna be a bumpy line-up with barely any push, and at a beach-and-reef break, the long period can make it break straight and close out.

Bottom line: there are no standouts here, not a single session worth paddlin' out for. This is one of those blank runs that's more normal for the area when the trade winds lock in and the swell windows don't line up. The setup on some of those bigger, windier days might look more interesting for the kite crew than for us with a fin and wax. Keep your board in the car, but honestly, don't rush.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Tue morning. Warm (max 28°C on Tue afternoon, min 25°C on Thu afternoon). Winds decreasing (fresh winds from the SSW on Tue morning, light winds from the S by Tue night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Fri afternoon, min 25°C on Fri morning). Wind will be generally light.

Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
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
2
2
2
1
1
0
0
0
1
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)
2.4
SSW
10
1.7
ENE
11
1.4
ENE
10
0.9
SSW
14
0.9
SSW
13
1.3
ENE
7
1.5
ENE
7
1.5
ENE
7
1.3
ENE
7
1.3
ENE
11
1.1
ENE
11
1
ENE
10
1
E
10
0.9
ENE
10
0.7
NE
9
0.7
NE
8
0.4
SSW
15
1.1
ENE
8
0.4
SSW
14
1
NE
8
0.8
E
8
Wave Graph
Metric surfscale
Energy kJ
1042
650
378
269
257
177
236
229
158
387
297
222
196
166
75
72
84
149
76
129
71
Wind (km/h)
30
SSW
20
SSW
5
S
15
NE
20
ENE
15
E
30
ENE
30
NE
25
NE
25
ENE
25
ENE
20
ENE
20
ENE
25
NE
25
ENE
20
ENE
25
NE
20
NE
25
NE
30
NE
30
ENE
Wind State
cross-on
cross
cross-on
cross
cross
cross-on
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross
cross-on
cross
cross
cross
cross
cross
cross
High Tide
1:30PM0.72m
1:48AM0.38m
2:07PM0.69m
2:29AM0.44m
2:41PM0.65m
3:11AM0.50m
3:13PM0.59m
3:51AM0.55m
3:42PM0.51m
4:32AM0.57m
4:10PM0.44m
5:15AM0.59m
4:37PM0.37m
Low Tide
8:36PM0.05m
7:34AM0.03m
9:01PM0.04m
8:25AM0.05m
9:26PM0.04m
9:14AM0.08m
9:49PM0.03m
10:05AM0.12m
10:11PM0.04m
10:58AM0.16m
10:34PM0.05m
11:57AM0.20m
10:58PM0.06m
rain showers
clear
clear
clear
part cloud
rain showers
thunderstorm
part cloud
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
part cloud
clear
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:16
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:39
6:38
6:37
6:37
6:36
6:35
6:34
 mm
2
3
1
1
Temp °C
27
28
27
27
28
27
26
26
25
25
26
25
25
26
25
25
26
26
26
26
26
Feels °C
26
29
30
31
30
29
25
25
23
24
25
24
24
26
24
25
26
27
27
25
25
  • 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 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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