Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 7 am 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
27.1° C
0.5° 

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 11 Aug 2026:

  • Best quality surf: Monday 17 Aug, 5AM (local time) - 10ft (3.0m), 9s period, ENE swell with onshore winds.
  • Most powerful swell: Sunday 16 Aug, 11PM (local time) - 18ft (5.5m), 11s period, ENE swell with 7,078 kJ wave energy.
  • Next surfable swell (1★+): Monday 17 Aug, 5AM (local time) - 10ft (3.0m), 9s period with ENE 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 Monday (Aug 17) at 5AM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 0.8m and 15s. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Sandy Beach in the next 16 days are 5.5m 11s and forecast to arrive on Sunday (Aug 16) at 11PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 18s period and expected on Tuesday (Aug 18) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Mon 17th Aug)10ft (3.0m) 9s
Best Surf 5AM (Mon 17th Aug)10ft (3.0m) 9s
Most Powerful11PM (Sun 16th Aug)18ft (5.5m) 11s

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


The Lowdown

Alright, Rusty here. Gotta be straight with you – the next couple of weeks at Sandy Beach are looking like a flat, windy mess. The models are showing “poor surf conditions” for just about every single session, so we’re in for a rough patch.

The first chance to even think about a paddle is Tuesday morning, August 11th. Sandy Beach is a beach and reef setup, and the water is about 81°F, which is normal for this time of year. But the wind is a moderate cross-onshore from the ENE at 16 mph, and the swell is a weak, short-period 4 ft from the ENE. The combined energy is moderate (403), but it’s just choppy and ugly. Not worth the effort.

From Tuesday afternoon through the end of the week, it’s a total write-off. The wind cranks up to a fresh 22 mph cross-shore, and the swell is tiny, long-period leftovers from the south – 3 ft to 4 ft. Energy climbs into the 800-900 range, but with that wind, it’s nothing but lumpy cross-chop. Saturday morning, August 15th, brings a bump to 6 ft from the ENE, but the wind is a strong 25 mph cross-shore. That’s just messy. By Sunday the 16th, the swell hits 8 ft from the ENE with a near-gale 34 mph cross-offshore wind. The energy is very strong (1743), and while the wind is clean, it’s a battle, not a session. That’s expert-only territory, and with the wind howling, it’s more of a survival mission.

Monday, August 17th, is the biggest swell of the run – 10 ft from the ENE with a 12-second period and very strong energy (2567). But the wind is onshore, there’s a risk of thunderstorms, and it’s just a wall of chop. Honestly, that’s a kite-surfing day, not a paddle day. After that, the swell drops off a cliff. Tuesday the 18th is back to 2 ft, and from Wednesday the 19th through the 21st, we’re looking at tiny, weak swells (2 ft) with cross-shore winds. The energy drops to a pathetic 57-296. Nothing to ride.

The week of August 22nd offers a slight uptick in consistency from the south, but the wind is still cross-shore or cross-onshore. The swell is small (1 ft to 3 ft) with moderate energy. The best of a bad lot might be Saturday morning, August 22nd, with 2 ft from the SSW, 16-second period, and a moderate 12 mph cross-shore wind. It’s a long-period groundswell, so it might break a bit straight at the beach, but the reef could offer something. The energy is weak (281). The last few days (August 24th-26th) see the south swell building again, hitting 4 ft to 5 ft with 16-20 second periods and strong energy (1256-1366), but the wind is a problem – fresh to strong cross-shore or cross-onshore, keeping it lumpy. The only sliver of hope is Tuesday afternoon, August 25th, where the forecast says “marginal” with a 1-star rating, 3 ft from the south, 20-second period, and a fresh cross-shore wind. It’s still a long shot.

So, bottom line: there’s no standout. Not a single session in the next 16 days lines up good wind with decent swell. If you’re aching for a wave, maybe that Tuesday afternoon, August 25th, but it’s a gamble. It’s a long, quiet stretch for Sandy Beach, and forecasts can change, but right now, you’re better off waiting.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Heavy rain (total 52mm), heaviest during Sun morning. Warm (max 27°C on Sun afternoon, min 25°C on Fri afternoon). Winds decreasing (severe gales from the NE on Sat night, light winds from the SE by Sun night).

Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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)
0.6
SSW
14
0.8
SSW
14
0.6
S
20
0.9
S
18
0.9
S
18
1
S
16
1
S
16
1.1
S
15
1.1
S
15
1
S
14
1.8
ENE
8
2.1
ENE
9
2.5
ENE
11
3
ENE
12
3.5
ENE
12
3.5
ENE
12
3.5
ENE
11
3.5
ENE
10
2.3
ENE
8
1.9
ENE
8
1.8
ENE
8
Wave Graph
Metric surfscale
Energy kJ
165
269
276
509
498
520
501
559
537
411
411
631
1593
2198
3290
3505
3092
2646
737
492
398
Wind (km/h)
25
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
35
NE
35
ENE
35
ENE
40
ENE
40
NE
40
NE
40
NE
45
NE
55
NNE
45
ESE
40
SE
25
SE
20
E
30
ENE
30
ENE
Wind State
cross-on
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross-on
on
on
cross-on
cross-on
cross-on
High Tide
2:36PM0.79m
2:40AM0.31m
3:14PM0.76m
3:27AM0.36m
3:49PM0.71m
4:15AM0.41m
4:22PM0.64m
5:04AM0.45m
4:53PM0.55m
5:55AM0.48m
5:21PM0.47m
6:52AM0.50m
5:48PM0.38m
Low Tide
9:52PM0.05m
8:22AM-0.02m
10:21PM0.04m
9:11AM0.01m
10:50PM0.04m
10:01AM0.07m
11:17PM0.04m
10:54AM0.13m
11:44PM0.05m
11:53AM0.20m
00:11AM0.05m
1:08PM0.25m
00:39AM0.07m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
clear
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:07
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:02
7:02
7:01
7:00
7:00
7:00
6:59
 mm
1
1
8
29
6
7
1
Temp °C
26
26
25
25
25
26
26
26
25
26
26
25
26
26
25
26
27
27
26
26
25
Feels °C
26
24
23
23
22
24
24
23
22
23
23
22
23
23
21
22
25
26
27
26
23
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Sandy Beach:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sandy Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest