Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 1 pm 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
27.1°C
0.3° 

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 30 Aug 2026:

  • Most powerful swell: Saturday 5 Sep, 8PM (local time) - 10ft (3.0m), 8s period, ENE swell with 995 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 3.0m 8s and forecast to arrive on Saturday (Sep 05) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 17s period and expected on Saturday (Aug 29) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Sat 5th Sep)10ft (3.0m) 8s

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


The Lowdown

Gather ’round, crew. Rusty here. I’ve taken a long, hard look at the charts for Sandy Beach, and I gotta be straight with you—this is one of those outlooks where you might want to keep the board in the car for a while. The whole 16-day window is a tough stretch.

Right off the bat, from Saturday the 29th of August, we’ve got swell on the way, but the wind is a killer. It’s a consistent cross-shore breeze, mostly from the ENE, blowing at 25 to 25 mph. That’s a strong breeze, and it’s whipping up a messy cross-chop that’s just ruining the face of any wave trying to form. The water temp is sitting at a pretty normal 81°F, nothing unusual there, but the conditions are just poor.

The first real chance of anything rideable doesn’t show up until the very end of the run. The rest of the first week and the start of the second—basically from the 29th of August through to the morning of the 13th of September—is a solid run of "poor surf conditions." We’ve got plenty of swell height, plenty of energy (the combined energy reading hits a massive 4141 on the 6th of September), but every single entry says "poor surf conditions." That ENE cross-wind is relentless. Even when the swell gets up to 13ft with a 11-second period on the 6th, it’s just a raw, blown-out mess. That one’s a big, powerful, but ugly beast—strictly for experts, and only if they’re in the mood for a beating. For the kitesurfing crew, the setup looks far more interesting than for paddle surfing.

Then we finally get a tiny silver lining. On the afternoon of Sunday the 13th of September, the wind finally drops to a gentle breeze, and the combined swell energy drops to 328. We’ve got a 2ft swell from the SSW with a very long period of 15 seconds, but the wind is cross-onshore and the forecast calls it "marginal surf forecast." It’s small, a bit bumpy, and a long-period swell like that on a beach and reef setup can break a little straight. It’s not a standout, but if you’re desperate for a splash, it’s the only window. That’s your one shot, and it’s a gamble.

Honestly, this is a tough one. Normally for an exposed spot like Sandy Beach, blank runs aren’t the norm, but when the trade winds lock in this strong, there’s not a lot you can do. Keep an eye on the longer-range forecasts; things can always change for the better.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sun night. Warm (max 26°C on Sun afternoon, min 25°C on Sat afternoon). Mainly strong winds.

Days 5-7 Weather Summary

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

Sat
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
ENE
7
2.3
ENE
7
2
ENE
7
1.7
ENE
7
1.6
ENE
7
1.8
ENE
7
1.8
ENE
8
1.9
ENE
8
1.8
ENE
8
1.9
ENE
8
1.9
ENE
8
0.9
S
16
0.8
S
16
1.6
ENE
8
1.7
ENE
8
1.6
ENE
8
1.6
ENE
8
1.7
ENE
7
1.8
ENE
7
2.2
ENE
7
Wave Graph
Metric surfscale
Energy kJ
189
557
371
293
237
343
382
410
392
432
443
422
318
275
331
296
283
305
344
526
Wind (km/h)
40
ENE
40
ENE
40
ENE
40
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
NE
35
ENE
35
ENE
35
NE
35
ENE
40
ENE
35
ENE
30
NE
30
ENE
30
NE
35
NE
35
ENE
Wind State
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
High Tide
3:48PM0.58m
4:31AM0.49m
4:17PM0.51m
5:19AM0.53m
4:46PM0.43m
6:14AM0.56m
5:18PM0.36m
7:19AM0.59m
5:54PM0.28m
8:36AM0.61m
7:01PM0.22m
9:55AM0.64m
9:27PM0.19m
Low Tide
10:32PM0.05m
10:34AM0.14m
10:56PM0.04m
11:35AM0.19m
11:23PM0.04m
12:53PM0.23m
11:56PM0.04m
2:47PM0.24m
00:39AM0.05m
5:18PM0.21m
1:39AM0.06m
6:33PM0.16m
3:03AM0.07m
clear
part cloud
clear
clear
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:13
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:49
6:47
6:46
6:46
6:45
6:45
6:44
 mm
1
Temp °C
25
25
25
26
25
25
25
25
25
25
25
25
26
25
25
25
25
25
25
25
Feels °C
21
22
22
22
22
22
22
22
23
22
22
23
24
23
21
22
21
22
22
21
  • 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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