Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 7 pm 30 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
26.9°C
0.0° 

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 31 Aug 2026:

  • Most powerful swell: Saturday 5 Sep, 2PM (local time) - 8ft (2.5m), 13s period, ENE swell with 2,258 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 13s and forecast to arrive on Saturday (Sep 05) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 9s period and expected on Sunday (Sep 06) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Sat 5th Sep)8ft (2.5m) 13s

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


The Lowdown

Right then, let’s take a look at what’s on offer for Sandy Beach over the next couple of weeks. To be brutally honest, it’s a pretty grim outlook for most of the period. The wind is stuck in a cruel easterly pattern, whipping up a messy cross-shore chop that’s just ruining any chance of clean surf. The swell is there, especially in the first week, but it’s all short-period, wind-driven junk, and the conditions are just poor.

The first real glimmer of anything interesting doesn’t show up until way down the line. We’ve got a solid week of nothing but onshore slop to get through first. The waves are there, but the wind has them all chopped up and lumpy, not worth paddling out for.

Now, hold on to your board, because Tuesday, September 8th is a proper standout. The morning looks like a beast. A solid 13ft swell from the east-northeast is rolling in, and the wind has swung around to a light north, going cross-offshore. The wave energy is massive, hitting 6060 (strong to very strong wave energy). It’s going to be big, clean, and powerful. The afternoon is a touch smaller at 10ft, but the wind goes fully offshore from the northwest. It’s a dream scenario for the big-wave crew. However, this is not for the faint-hearted. At 13ft, this is expert-only territory, and at 10ft, it’s still only for solid intermediate or advanced surfers. The break is an exposed beach and reef setup, so that long-period groundswell (11-12 seconds) will be looking for a point or reef to wrap around, but at these sizes, Sandy Beach will be absolutely thumping. It’s going to be a spectacle, but if you’re not ready for it, stay on the sand. Crowds are likely, given the quality.

After that, things drop off again. Wednesday the 9th sees a mix of onshore winds and smaller, weaker swell, and the rest of the second week is more of the same: cross-shore winds and small, mushy waves. The last few days of the forecast are just a dribble of 3ft to 4ft, short-period slop with cross-shore wind. Not worth a second look.

The water temperature is about average for the time of year, so no surprises there.

For the one day it’s on, Tuesday the 8th is the best on offer. The early morning session is the real standout for the experts, with the afternoon also being excellent for those who can handle it. For the rest of us, it’s a waiting game for a better run of weather.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Sat morning. Warm (max 27°C on Sat afternoon, min 25°C on Wed night). Mainly strong winds.

Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
ENE
7
2
ENE
7
2
ENE
8
1.9
ENE
8
2
ENE
8
2
ENE
8
2
ENE
8
0.9
S
16
1.8
ENE
8
2.5
ENE
8
2.3
ENE
8
2.4
ENE
8
3
ENE
8
3
ENE
8
2.5
ENE
8
2.5
E
8
2.5
ENE
8
2.5
ENE
13
2.5
ENE
13
Wave Graph
Metric surfscale
Energy kJ
352
405
428
410
463
487
463
422
362
749
589
655
936
1251
916
773
889
2059
1966
Wind (km/h)
40
ENE
35
ENE
40
ENE
30
ENE
35
ENE
35
NE
35
ENE
35
ENE
35
ENE
40
ENE
45
ENE
45
ENE
45
ENE
45
ENE
45
ENE
40
ENE
30
ENE
30
ENE
30
ENE
Wind State
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
High Tide
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
11:03AM0.68m
11:10PM0.21m
Low Tide
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
7:10PM0.12m
4:28AM0.06m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:13
6:13
6:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:47
6:46
6:46
6:45
6:45
6:44
6:43
 mm
2
2
2
Temp °C
26
25
26
26
25
26
26
26
26
26
26
26
25
26
26
26
26
27
26
Feels °C
24
21
23
23
22
24
24
24
24
23
22
22
20
21
21
23
24
27
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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