Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 1 pm 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
26.9° C
0.4° 

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 Aug 2026:

  • Most powerful swell: Thursday 13 Aug, 2AM (local time) - 4ft (1.2m), 16s period, S swell with 762 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 1.2m 16s and forecast to arrive on Thursday (Aug 13) 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 0.5m 14s period and expected on Thursday (Aug 06) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Thu 13th Aug)4ft (1.2m) 16s

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


The Lowdown

Alright, Rusty here again. Let’s call it like I see it – Sandy Beach is looking at a rough two weeks. That cross-shore wind is going to be a constant headache, messing up anything that could be good. The water’s sitting around 80°, so pretty normal for the season.

The first bit of surf shows up on Thursday afternoon, August 6th. We’ve got a tiny 1ft swell from the south-southwest, with a 14-second period. That’s a long-period groundswell, which usually means good shape, but the energy is only moderate (198). The wind is a fresh cross-shore from the east-northeast at 19 mph, making it lumpy and choppy. It’s poor.

Friday the 7th is the same story: 1ft SSW swell, moderate energy, cross-shore wind. No good.

Saturday the 8th sees the swell jump to 5ft - 5ft, but it’s short-period wind swell from the east-northeast at only 6-7 seconds. The energy picks up (314 to 352), but the wind is a fresh 22 mph cross-shore. Total chop.

From Sunday the 9th through Tuesday the 11th, the swell stays in the 5ft to 6ft range, all short-period ENE wind swell. The energy gets strong (up to 624), but it’s all wind-driven junk. The wind stays cross-shore, fresh to strong. Nothing clean.

Wednesday the 12th brings a change. We get a 3ft swell from the south, but with a very long period of 18 seconds. The energy is strong (864). That’s a proper groundswell. But the wind is still a fresh cross-shore, so it’ll be frustrating to watch.

Thursday the 13th has a similar deal: 4ft - 4ft from the south, long period (15-16 seconds), strong energy (924 and 819). But the wind is cranking at 22-25 mph, cross-shore. The surface will be ugly.

From Friday the 14th all the way to Wednesday the 19th, the swell builds to 6ft - 8ft, all from the east-northeast, with short periods (7-8 seconds). The energy is strong (up to 879). But the wind is relentless – 19 to 28 mph, always cross-shore. For a beach and reef setup, this is kite-surfing weather, not a surfer’s paradise. It’s all poor.

This pattern keeps going through the 21st. The only tease is on Thursday afternoon, August 20th, when a 2ft swell from the south-southwest with a 21-second period shows up. The energy is solid (449). But again, the wind is fresh cross-shore.

I can’t find a single standout moment in this whole 16-day outlook. Every single day is marked as “poor surf conditions” because of that nasty cross-shore wind. The swell is there, but the wind kills it. Don’t bother with a paddle board – bring a kite.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

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

Thu
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
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
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)
0.4
SSW
14
1
ENE
8
0.4
SSW
14
0.4
SSW
14
1.4
ENE
6
1.5
ENE
6
1.6
ENE
7
1.7
ENE
7
1.6
ENE
7
1.8
ENE
7
1.8
ENE
7
1.6
ENE
7
1.5
ENE
8
1.5
ENE
7
1.4
ENE
7
0.8
SSW
14
0.6
S
20
0.9
S
18
0.9
S
18
1.2
S
16
Wave Graph
Metric surfscale
Energy kJ
80
107
77
73
148
183
232
278
261
334
340
292
244
215
188
269
276
509
498
762
Wind (km/h)
30
ENE
25
ENE
25
NE
30
NE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
35
NE
25
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
NE
25
ENE
Wind State
cross
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross-on
High Tide
8:39PM0.22m
11:25AM0.67m
10:36PM0.19m
12:21PM0.73m
00:00AM0.20m
1:10PM0.77m
1:01AM0.23m
1:55PM0.79m
1:52AM0.27m
2:36PM0.79m
2:40AM0.31m
3:14PM0.76m
3:27AM0.36m
Low Tide
6:43PM0.21m
3:25AM0.02m
7:38PM0.16m
4:32AM0.00m
8:16PM0.11m
5:38AM-0.02m
8:50PM0.08m
6:37AM-0.03m
9:21PM0.06m
7:31AM-0.04m
9:52PM0.05m
8:22AM-0.02m
10:21PM0.04m
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:06
7:05
7:05
7:04
7:02
7:02
 mm
Temp °C
26
25
25
25
25
26
26
25
25
25
25
26
26
26
26
26
25
25
25
26
Feels °C
25
24
24
23
24
24
23
22
23
22
24
25
25
26
25
25
23
22
22
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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