Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 1 am 23 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 23 Aug 2026:

  • Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.1m), 17s period, S swell with 716 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 1.1m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. 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 15s period and expected on Sunday (Aug 23) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Thu 27th Aug)3.5ft (1.1m) 17s

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


The Lowdown

Alright, Rusty here again. Let’s break down the same forecast for Sandy Beach, but in the old-school numbers.

For the first week and a half, it’s a total bust. The wind is a nightmare, blowing from the ENE at 18 to 25 mph, mostly cross-shore, just ripping the surface to shreds. The water sits at a normal 80.8°, but you won’t care when you’re staring at a lumpy, chopped-up ocean.

The first real sign of something happens on Tuesday, September 1st. The swell energy jumps, with a combined energy of 1274, and we see waves of 7.2ft from the ENE with a 9 second period. But the wind is still cross-on from the east, making it choppy. It’s a marginal call at best, and with the crowds often there, it’s not worth the fight.

The most interesting window opens up the week of September 7th. On Monday the 7th, the wind finally eases off. In the morning, we get a gentle breeze from the NE at 9 mph, still cross-shore, but much cleaner. The swell is 8.2ft from the ENE with a 12 second period, and the combined energy is a massive 2630. That’s a lot of water moving. But the real standout is Monday afternoon. The wind goes light and cross-offshore from the north at only 6 mph, and the swell pumps up to 9.8ft from the ENE with the same 12 second period. The combined energy hits 2913, and the report says it’s clean.

Now, listen: 9.8ft is a serious wave. This is for experienced surfers only. The wind and tide are lined up, but that swell might be too much for this break. With that long period, it’s going to be a heavy, powerful wall. It’s the best looking moment in the whole 16 days, but it’s a beast. The rest of the period after that is either messy or just too big, so that Monday afternoon is your one shot. If you’ve got the skills, you know what to do.

Short Range Forecast

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

Days 4-6 Weather Summary

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

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
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)
1.9
ENE
7
1.9
ENE
7
1.9
ENE
7
1.7
ENE
7
1.6
ENE
7
1.6
E
7
1.9
E
7
1.7
ENE
7
1.7
ENE
7
1.7
E
7
0.7
S
18
0.7
S
19
1.1
S
17
0.9
S
16
1
S
16
0.8
S
14
0.9
S
14
0.8
S
13
1.6
ENE
7
1.6
ENE
6
1.8
ENE
7
Wave Graph
Metric surfscale
Energy kJ
326
317
316
261
269
255
366
319
285
255
307
351
716
427
482
260
329
225
239
210
276
Wind (km/h)
40
ENE
40
NE
40
ENE
35
ENE
30
ENE
35
ENE
35
ENE
40
ENE
35
ENE
35
ENE
35
ENE
30
ENE
35
ENE
30
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
Wind State
cross
cross
cross
cross
cross
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
12:51PM0.62m
00:45AM0.24m
1:26PM0.65m
1:20AM0.27m
1:56PM0.66m
1:55AM0.30m
2:25PM0.67m
2:30AM0.34m
2:53PM0.66m
3:07AM0.39m
3:21PM0.62m
3:47AM0.44m
3:48PM0.58m
4:31AM0.49m
Low Tide
8:29PM0.12m
6:13AM0.06m
8:49PM0.11m
6:56AM0.04m
9:09PM0.10m
7:36AM0.04m
9:29PM0.09m
8:15AM0.04m
9:49PM0.07m
8:57AM0.06m
10:10PM0.06m
9:43AM0.10m
10:32PM0.05m
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:11
6:11
6:11
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:52
6:52
6:52
6:51
6:50
6:49
 mm
Temp °C
26
26
26
26
26
26
26
26
25
25
25
25
25
25
25
25
25
25
25
25
25
Feels °C
23
23
24
25
25
26
24
23
22
21
22
22
23
22
22
23
21
22
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)
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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