Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 7 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
27.1°C
0.2° 

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 4 Sep 2026:

  • Best quality surf: Wednesday 9 Sep, 5AM (local time) - 3ft (0.9m), 14s period, SSW swell with glassy winds.
  • Most powerful swell: Saturday 5 Sep, 2AM (local time) - 7ft (2.2m), 14s period, E swell with 1,977 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 9 Sep, 5AM (local time) - 3ft (0.9m), 14s period with SSW swell.

Best Forecast Surf Conditions for Sandy Beach this week:

The surf forecast for Sandy Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 09) at 5AM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 1.2m and 9s. Another secondary swell of 0.9m and 8s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Sandy Beach in the next 16 days are 2.2m 14s and forecast to arrive on Saturday (Sep 05) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 15s period and expected on Monday (Sep 07) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 9th Sep)3ft (0.9m) 14s
Best Surf 5AM (Wed 9th Sep)3ft (0.9m) 14s
Most Powerful 2AM (Sat 5th Sep)7ft (2.2m) 14s

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


The Lowdown

Alright, Rusty here. Let's take a look at the local surf picture for Sandy Beach.

Right off the bat, I gotta be straight with you – this 16-day stretch is a tough one. We’ve got a lot of days with messy, cross-shore winds and just generally poor surf conditions. There’s no standout, world-class swell on the horizon for this break. The water’s warm at 81°F, pretty average for this time of year, but that’s about the only thing that’s comfortable.

We kick things off on Friday, September 4th, but it’s a write-off. Strong cross-shore winds from the ENE at 25 mph with a 4ft S swell, but it's all crossed up and sloppy. The combined swell energy is a hefty 1321, but it’s a waste with that wind. Saturday the 5th sees the swell build to around 7ft from the ENE, but again, fresh cross-breeze and lumpy conditions mean it’s only a marginal call at best. It’s a similar story through Sunday and Monday – the swell sticks around but the wind is onshore or cross-onshore, making a mess of things.

There’s a small window for something slightly better on Wednesday the 9th. The swell drops right back to 3ft, but the period is a long 14 seconds from the SSW. With moderate cross-shore wind, it's still only marginal. The energy is weak at 645, so it’s not the day to get excited about. The high point of the whole run might be that Sunday afternoon, the 6th, when a 6ft SSW swell with a 14-second period rolls in, giving us a combined energy of 3434 – that's moderate-strong energy. But it comes with a risk of thunderstorms and a moderate cross-onshore. It’s the best looking set on paper, but the conditions are still far from perfect for a paddle.

For the rest of the second week and into the third, it’s just rinse and repeat. Strong cross-shore winds, lumpy chop, and poor surf quality dominate right through to Saturday the 19th of September. A few days in the middle, like the 17th, see a clean 3ft SSW groundswell with a very long 17-second period, but the fresh cross-wind spoils it again. A swell that long at a beach setup tends to close out and be a bit tricky anyway.

Honestly, there's nothing here I'd call a standout. If you’re desperate for a paddle, Sunday the 6th is your best bet for some wave energy, but don't expect any classics. Most of this period looks more interesting for a kite surfer than someone on a shortboard. I’d keep an eye on the forecast, because things can change, but for now, it’s a lean run.

Rusty.

Short Range Forecast

Moderate rain (total 16mm), heaviest on Sun night. Warm (max 26°C on Fri morning, min 25°C on Fri morning). Winds decreasing (strong winds from the ENE on Fri morning, light winds from the ENE by Sun night).

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Mon morning. Warm (max 27°C on Mon afternoon, min 25°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the ENE by Wed night).

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
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
1
1
0
0
2
3
1
0
0
0
0
2
1
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)
1.3
S
12
1.2
E
14
2.2
E
14
2.1
E
13
2.2
ENE
13
2.2
ENE
13
2.1
ENE
12
1.9
SSW
14
2.1
E
12
2.1
ENE
12
2.1
ENE
13
2
ENE
12
1.7
ENE
11
1.6
ENE
11
0.9
SSW
14
0.9
SSW
14
0.8
E
13
0.7
E
13
1.4
ENE
7
1.4
ENE
7
1.8
ENE
7
Wave Graph
Metric surfscale
Energy kJ
521
577
1977
1609
1616
1568
1281
1484
1290
1302
1344
1072
724
550
295
273
219
176
214
192
285
Wind (km/h)
40
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
35
ENE
20
E
15
ENE
20
E
25
SE
30
SSE
25
S
15
S
5
SE
20
ENE
30
NE
30
ENE
35
ENE
35
ENE
30
NE
Wind State
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross
cross-on
on
on
cross-on
cross-on
on
cross
cross
cross-on
cross
cross
cross
High Tide
9:55AM0.64m
9:27PM0.19m
11:03AM0.68m
11:10PM0.21m
12:00PM0.71m
00:14AM0.26m
12:48PM0.73m
1:03AM0.31m
1:30PM0.72m
1:48AM0.38m
2:07PM0.69m
2:29AM0.44m
2:41PM0.65m
3:11AM0.50m
Low Tide
6:33PM0.16m
3:03AM0.07m
7:10PM0.12m
4:28AM0.06m
7:41PM0.09m
5:40AM0.04m
8:09PM0.07m
6:40AM0.03m
8:36PM0.05m
7:34AM0.03m
9:01PM0.04m
8:25AM0.05m
9:26PM0.04m
clear
clear
part cloud
clear
clear
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
rain showers
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:15
6:15
6:15
6:15
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:44
6:43
6:42
6:40
6:39
6:38
6:37
 mm
4
12
2
2
1
1
1
Temp °C
26
26
25
26
26
25
26
26
26
26
27
27
27
27
27
26
27
26
25
25
26
Feels °C
22
22
21
24
24
24
24
24
27
27
28
28
28
28
31
29
27
26
22
22
23
  • 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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