Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 1 pm 25 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
27.2°C
0.4° 

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 26 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 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 Powerful11AM (Thu 27th Aug)3.5ft (1.1m) 17s

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


The Lowdown

G’day, Rusty here. I’ve got to be straight with you – this next stretch for Sandy Beach is a tough one. There’s no real surf to get excited about for the whole 16-day run, from now through to early September. The wind is the main problem, hammering in from the ENE every single day, and it’s almost always a fresh to strong cross-shore. That’s going to leave the water lumpy, messy, and just plain rubbish for any kind of decent wave riding.

Let’s look at what’s happening. We kick off on Tuesday, 25 August, with a 6 ft cross-on swell out of the east at a short 7 seconds. The wind is 22 mph ENE, and it’s described as “fresh cross-onshore and lumpy”. The wave energy is moderate at best (586) but the surf quality is poor. No go. That same pattern sticks around for days. Wednesday morning sees a tiny 2 ft swell from the SSW, but it’s 14-second period – long-period groundswell that would normally have some punch – but the cross-wind messes it all up (607 energy). Through Thursday and Friday, we’ve got S swell around 4 ft to 3 ft with periods up to 17 seconds, and the energy climbs (861 on Thursday morning), but again, that ENE cross-wind and lumpy conditions kill any chance of clean faces.

Come Saturday, 29 August, and Sunday, 30 August, the swell turns back east-northeast, picking up to 5 ft-6 ft, but the period drops to 6-7 seconds – short, weak wind swell. The wind stays a fresh 19-25 mph cross-shore. The water is 81°F here, which is about average for the time of year (anomaly of 0.7°F). That doesn’t help the waves, though.

We get into early September, and on Tuesday, 1 September, there’s a 6 ft ENE swell at 8 seconds with 744 energy – still moderate, but the wind is 19 mph cross-shore and the quality is still poor. The most interesting pulse is around Saturday, 5 September afternoon, and Sunday, 6 September morning, when the ENE swell reaches 6 ft and 6 ft with a 13-second period. The combined energy jumps to 1264 and 1454 – that’s strong wave energy. But the wind cranks up to 25 mph from the ENE, and the description for Sunday is “strong cross-shore with messy cross-chop”. You’d be scratching for anything rideable.

For a beach and reef setup like Sandy Beach, that much ENE wind and cross-shore chop is just brutal. The swell direction is east-northeast, and the optimum swell direction here is ESE, so we’re not even getting the best angle. Honestly, this setup looks more interesting for kite surfing than paddle surfing.

When I look at the whole 16-day window, every single entry has “poor surf conditions” except for one borderline call on Saturday, 5 September afternoon, which is “marginal surf forecast or questionable tide conditions” – but even that one gets a score that says it’s not worth paddling out. The consistency on offer is fairly consistent, but that means it’s consistently bad. There are no standout days, no windows of glassy offshore wind – it’s all ENE cross or cross-on, from 12 mph up to 28 mph.

So, the honest truth is: don’t bother. Keep the board in the car, maybe drive somewhere else, or just sit this one out. Forecasts can change, but this run looks locked in.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

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

Tue
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
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)
1.7
E
7
1.7
E
7
0.7
SSW
14
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
1.6
ENE
7
1.7
ENE
7
1.5
ENE
7
1.8
ENE
7
1.7
ENE
7
1.5
ENE
7
1.7
ENE
7
1.7
ENE
7
1.6
ENE
7
2
ENE
8
Wave Graph
Metric surfscale
Energy kJ
282
271
215
307
351
716
427
482
260
329
239
261
195
295
248
218
262
262
250
451
Wind (km/h)
35
ENE
30
ENE
35
ENE
35
NE
35
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
35
ENE
40
ENE
40
ENE
30
ENE
35
ENE
35
ENE
30
ENE
35
ENE
35
NE
30
NE
Wind State
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
High Tide
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
4:17PM0.51m
5:19AM0.53m
4:46PM0.43m
Low Tide
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
10:34AM0.14m
10:56PM0.04m
11:35AM0.19m
11:23PM0.04m
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:13
6:13
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:52
6:51
6:50
6:49
6:47
6:46
 mm
1
Temp °C
26
26
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Feels °C
23
24
21
21
22
23
22
22
22
22
22
21
21
22
21
22
22
22
22
22
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  • 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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