Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 7 pm 05 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 6 Sep 2026:

  • Most powerful swell: Saturday 5 Sep, 11PM (local time) - 7ft (2.2m), 13s period, ENE swell with 1,674 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 2.2m 13s and forecast to arrive on Saturday (Sep 05) at 11PM. 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 14s period and expected on Monday (Sep 07) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Sat 5th Sep)7ft (2.2m) 13s

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


The Lowdown

G’day, Rusty here, and I’ve gotta be straight with you – the next couple of weeks at Sandy Beach look pretty average, to be honest. We’ve got a bit of size on the way, but the wind is just a nightmare for most of the period, keeping things messy and lumpy. There’s no real standout session, but let’s walk through it.

The swell energy starts off strong – we’re talking a combined energy of 2200 (moderate to strong) on Saturday afternoon, September 5th, with a 7ft swell from the ENE. The problem is the wind: a fresh 19 mph cross-shore from the NE. That’s gonna leave the surface with a lumpy cross-chop. Water temp’s sitting at a warm 81°, which is pretty much normal for this time of year – no surprises there.

Sunday the 6th stays chunky, with 6ft to 8ft ENE swell, but the wind’s cross-on and fresh, making things ugly. Monday and Tuesday aren’t any better – same story of moderate to fresh cross-onshore winds and choppy, lumpy conditions. The swell energy is still strong (over 2000 on Monday), but you’d be fighting the wind the whole time.

Wednesday the 9th sees a drop in size – 3ft from the SSW with a long 14-second period, which is a nice groundswell, but the wind’s still cross-on and the energy is weak (529). It’s only marginal at best, and the conditions are fairly choppy. That’s as close to a window as we get, but it’s not really worth paddling out for.

Thursday and Friday the 10th and 11th offer a bit more size (4ft) but the period drops to 7 seconds – that’s super short period, sloppy, junk waves. The wind stays cross or cross-on, and the energy is weak (around 380-522). No good.

The second week is a bit of a mixed bag, but still nothing to get excited about. From the 12th to the 16th, we’ve got 4ft to 6ft ENE swell, but the period is short (7-10 seconds), and the wind is moderate to fresh cross-shore or cross-on. The energy is weak (under 500). The 14th and 15th have lighter winds (6-9 mph), but the swell is short-period and the conditions are still only marginal. For a beach and reef setup like Sandy Beach, that short period means the waves won’t have any shape or power.

On the 17th, the swell switches to a tiny 3ft from the SSW with a very long 16-second period – that’s a proper groundswell, but it’s too small to do anything, and the wind is still cross-shore and moderate. The 18th and 19th hold that long-period SSW swell (17 seconds), but it’s only 4ft, and the wind is cross-on or onshore, keeping it choppy. The energy is moderate (1000-1267) but the conditions are poor.

The 20th is a write-off – 3ft SSW swell, fresh cross-shore wind, and weak energy (552).

So, what’s the best of a bad bunch? Honestly, nothing here is a standout. The only thing that might be worth a glance is Wednesday the 9th – that 3ft SSW groundswell with a 14-second period could give a few clean-ish lines if the wind drops, but it’s not gonna get the heart racing. The rest is just blown-out, short-period junk or too small. For a spot that’s fairly consistent, it’s a rough patch – but it won’t stay this way forever. Keep an eye on the long-range SSW groundswells for the second week, but the wind needs to sort itself out.

Rusty.

Short Range Forecast

Heavy rain (total 23mm), heaviest during Sun night. Warm (max 27°C on Mon afternoon, min 25°C on Sat night). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Tue night. Warm (max 27°C on Tue night, min 25°C on Wed night). Mainly fresh winds.

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
0
0
0
0
0
1
1
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)
2.2
ENE
13
2.1
ENE
12
2
E
12
2.3
ENE
12
2.3
ENE
12
2.2
ENE
12
2
ENE
12
1.8
ENE
11
1.6
ENE
10
0.9
SSW
14
0.9
SSW
14
0.8
SSW
13
0.7
SSW
13
1.4
ENE
7
1.4
ENE
7
1.3
ENE
7
1.3
ENE
12
1.5
ENE
12
1.5
ENE
11
Wave Graph
Metric surfscale
Energy kJ
1568
1240
1175
1461
1535
1338
1084
802
530
356
269
204
176
208
186
151
461
612
531
Wind (km/h)
30
ENE
30
ENE
30
ENE
20
E
25
E
20
E
30
SSE
30
S
20
S
10
SSE
10
ESE
25
ENE
20
ENE
25
ENE
30
ENE
25
ENE
25
ENE
30
NE
30
ENE
Wind State
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross
cross-on
High Tide
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
3:13PM0.59m
3:51AM0.55m
Low Tide
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
9:14AM0.08m
9:49PM0.03m
rain showers
part cloud
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
rain showers
part cloud
part cloud
clear
part cloud
cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:15
6:15
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:42
6:40
6:39
6:38
6:37
6:37
 mm
1
2
9
3
4
1
1
2
1
1
Temp °C
25
26
26
26
26
27
27
27
27
27
26
27
26
26
26
25
25
25
25
Feels °C
23
25
25
26
25
28
28
27
28
30
29
28
27
25
25
24
23
23
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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