Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 7 am 14 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
27.1° C
0.5° 

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 14 Aug 2026:

  • Most powerful swell: Sunday 16 Aug, 5AM (local time) - 15ft (4.5m), 10s period, E swell with 3,502 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 4.5m 10s and forecast to arrive on Sunday (Aug 16) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Friday (Aug 21) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Sun 16th Aug)15ft (4.5m) 10s

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


The Lowdown

Alright team, Rusty here. Gotta be straight with you – this stretch of the forecast is a real heartbreaker for Sandy Beach. We’re looking at a long, long run of poor conditions.

The whole first week is a write-off. From Friday the 14th right through to Wednesday the 20th, the wind is howling out of the ENE and NE, mostly cross-shore or cross-onshore, and it’s cranking at 15 to 35 mph. That’s creating a mess of lumpy, choppy, cross-chop. The swell is there, but it’s junk. On Saturday the 15th we’ve got a meaty 10ft to 12ft of ENE swell, but it’s being shredded by a near-gale wind. Combined wave energy is through the roof (1674 to 2465), but it’s all just blown-out, dangerous whitewater. That’s only for experts, and even then, it’s not fun. Don’t bother.

There’s a brief glimmer of something different around the 20th and 21st, with a long-period SSW groundswell (16 to 18 seconds) showing up, but it’s tiny at 2ft and the wind is still a problem. The energy is low (around 115 to 366), so it’s not doing anything.

We finally get a window of interest on Thursday the 27th of August. Overnight on the 27th and into Friday the 28th, an E swell builds to 5ft with a very long period of 17-18 seconds. That’s a proper groundswell. The combined energy jumps up to 1987, which is solid. The wind drops to a moderate breeze from the ENE and NE, still cross or cross-on, but it’s manageable. The forecast calls it “marginal,” but that’s the best we’ve got. Keep in mind, that long period groundswell (over 15 seconds) can be a bit tricky on a beach break like Sandy – it might break too straight, so you’ll want to pick your peak carefully. The crowds are often here, so expect a few lads chasing the same clean-up sets.

Friday the 28th and Saturday the 29th taper off, with the swell dropping to 4ft and the period still long (14-16 seconds), but the wind turns more onshore, ruining the shape. The energy drops from 1500 down to 852.

So, the summary: Look, there’s almost nothing to get excited about for two whole weeks. The water temp is a standard 81°F, so that’s fine. But the wind is relentless. The only real standout is Thursday the 27th of August, with that long-period E groundswell – it’s a distant hope, but it’s the only shot we’ve got.

Stay salty.
Rusty.

Short Range Forecast

Heavy rain (total 36mm), heaviest during Sun morning. Warm (max 26°C on Fri morning, min 25°C on Fri morning). Winds decreasing (near gales from the ENE on Sat night, moderate winds from the E by Sun night).

Days 4-6 Weather Summary

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

Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
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)
2.1
ENE
8
2.2
ENE
8
3
ENE
8
3
ENE
8
3.5
E
9
4.5
E
10
3.5
ENE
9
2.4
ENE
9
1.9
ENE
8
1.7
ENE
8
0.8
S
14
0.8
S
13
0.7
S
13
1.3
ENE
7
1.1
ENE
8
1
ENE
8
1.2
ENE
8
0.9
E
8
0.6
SSW
18
0.6
SSW
17
0.9
E
8
Wave Graph
Metric surfscale
Energy kJ
494
540
1081
1452
2232
3457
1781
858
463
310
260
222
165
163
151
140
172
104
207
200
103
Wind (km/h)
35
NE
40
ENE
45
NE
55
ENE
55
ENE
60
ENE
30
E
25
ENE
20
E
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
25
ENE
25
ENE
25
NE
20
NE
25
ENE
25
ENE
20
ENE
Wind State
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross-on
High Tide
4:22PM0.64m
5:04AM0.45m
4:53PM0.55m
5:55AM0.48m
5:21PM0.47m
6:52AM0.50m
5:48PM0.38m
7:56AM0.52m
6:10PM0.31m
9:08AM0.53m
10:20AM0.55m
8:45PM0.20m
Low Tide
10:01AM0.07m
11:17PM0.04m
10:54AM0.13m
11:44PM0.05m
11:53AM0.20m
00:11AM0.05m
1:08PM0.25m
00:39AM0.07m
2:59PM0.27m
1:14AM0.09m
2:00AM0.10m
7:38PM0.20m
3:06AM0.11m
clear
clear
clear
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:09
6:09
6:09
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
7:00
7:00
6:59
6:58
6:57
6:57
 mm
3
15
6
12
Temp °C
26
26
25
25
26
26
25
26
26
25
25
25
25
25
25
25
25
25
25
26
25
Feels °C
23
23
22
21
21
22
21
26
27
24
23
23
23
23
24
25
24
25
25
26
25
  • 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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