Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 7 am 07 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 7 Sep 2026:

  • Best quality surf: Wednesday 9 Sep, 5AM (local time) - 3ft (0.9m), 14s period, SSW swell with glassy winds.
  • Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 15ft (4.5m), 13s period, SSW swell with 6,954 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 10s. 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 4.5m 13s and forecast to arrive on Tuesday (Sep 08) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 15s period and expected on Monday (Sep 07) at 11PM.

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 (Tue 8th Sep)15ft (4.5m) 13s

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


The Lowdown

Alright, Rusty here. Let’s be straight with you – this stretch at Sandy Beach (Oahu) is a tough one. The whole 16-day forecast is a write-off for good paddle surfing. We’ve got a long dry spell ahead, with no real windows of clean, rideable waves. The water temp is sitting at 81°F, which is pretty much average for this time of year, nothing unusual there.

The first few days, starting Monday the 7th, are a mess. There’s a risk of thunderstorms, and the wind is howling out of the east at 16 mph, cross-on, making things choppy and ugly. Swell height is around 5 ft from the east, but with that wind, it’s a total no-go. The combined wave energy is a massive 1223 (strong), but it’s all for nothing with that wind. This continues through Tuesday and Wednesday, with the wind staying onshore or cross-on, gusting up to 22 mph. The water is a lumpy, cross-chop mess.

We see a bit of a drop in swell on Thursday and Friday, but the wind doesn't let up, staying cross-shore or cross-on, and the wave comment is consistently "poor surf conditions." The swell period is short, around 7-11 seconds, which doesn't help. By the weekend, the wind is still a problem, and the swell is small and weak.

The second week is no better. A strong breeze from the east-northeast cranks up to 25 mph from the 17th onwards, pushing messy, lumpy swell in the 8 ft to 8 ft range. The combined wave energy is often over 1000, but with that wind, it’s just a washing machine. This window is completely blown out.

Forget about a paddle board. With this much wind, and Sandy Beach being a beach and reef setup, this is a full-on kite-surfing situation. The conditions are consistent for that, but for a surfer looking for a clean wave, there’s nothing on offer. The forecast is a blank run for the entire 16 days, and honestly, for this area, that’s a pretty normal pattern when the trades are this strong.

Rusty.

Short Range Forecast

Heavy rain (total 28mm), heaviest during Mon morning. Warm (max 27°C on Mon morning, min 26°C on Mon morning). Winds decreasing (strong winds from the SSE on Mon night, calm by Tue night).

Days 4-6 Weather Summary

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

Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
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
2
2
2
1
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)
2.4
ENE
12
1.5
E
12
4.5
SSW
13
2.3
SSW
10
1.6
ENE
11
1.4
ENE
10
0.9
SSW
14
0.9
SSW
13
1.3
ENE
7
1.4
ENE
7
1.4
ENE
7
1.2
ENE
7
0.7
E
11
1.2
ENE
11
1
ENE
11
0.9
ENE
10
0.8
ENE
10
0.8
ENE
9
0.7
NE
8
0.4
SSW
15
0.4
SSW
14
Wave Graph
Metric surfscale
Energy kJ
1670
672
6954
959
608
378
269
257
177
203
197
140
119
313
240
163
128
115
74
84
80
Wind (km/h)
25
ESE
30
ESE
50
SSE
30
SSW
20
SW
5
S
10
E
15
ENE
20
ENE
25
ENE
25
NE
25
ENE
20
ENE
25
NE
20
ENE
20
ENE
25
ENE
20
ENE
25
ENE
25
NE
20
NE
Wind State
cross-on
on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross
cross-on
cross
cross
cross
High Tide
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
3:42PM0.51m
4:32AM0.57m
4:10PM0.44m
Low Tide
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
10:05AM0.12m
10:11PM0.04m
10:58AM0.16m
10:34PM0.05m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
rain showers
part cloud
rain showers
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:15
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:40
6:39
6:38
6:37
6:37
6:36
6:35
 mm
6
6
9
2
2
3
Temp °C
27
27
27
27
27
27
27
27
27
26
25
25
25
25
25
25
26
25
25
25
25
Feels °C
27
28
25
26
27
31
32
29
30
26
23
24
24
24
25
25
26
25
24
23
24
  • 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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