Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 1 am 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 6 Aug 2026:

  • Most powerful swell: Thursday 13 Aug, 2AM (local time) - 4.5ft (1.3m), 16s period, S swell with 890 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 1.3m 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)4.5ft (1.3m) 16s

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


The Lowdown

Alright folks, Rusty here. Let’s be straight with you – Sandy Beach is looking like a write-off for the next couple of weeks. This stretch is a classic exposed beach and reef setup, and it’s getting hammered by persistent cross-shore winds that are just wrecking any chance of clean waves. We’ve got no standouts to speak of, so we’re looking at a long gap in quality surf from now all the way through.

The pattern starts off with some tiny, weak 1ft SSW swell on Thursday the 6th and Friday the 7th, but it’s completely useless. The cross-shore wind is already on it, and the wave energy is moderate at best (around 218). The water’s sitting at a warm 80°, which is pretty average for the time of year, so no surprises there.

Then we hit a shift from Saturday the 8th through to Wednesday the 12th. The swell size bumps up to a messy 5ft to 6ft, but it’s short-period windswell (6-8 seconds) coming from the ENE. The wind stays cross-shore and fresh, creating lumpy, chopped-out conditions. The combined energy climbs into the moderate range (338 to 630), but it’s not doing you any favours – it’s just a bumpy, crumbly mess.

Mid-week on the 12th, there’s a spike in longer-period groundswell from the S and SSW, hitting 3ft at 18 seconds. The energy gets strong (859 to 931), and that long period means the waves would have some push, but the cross-shore wind kills the shape. For a beach and reef spot like this, that long-period groundswell tends to close out or break too straight anyway. Not worth the paddle.

From Thursday the 13th right through to the 21st, it’s the same story. The swell builds into the 8ft to 12ft range by the weekend of the 15th and 16th, with energy levels going through the roof (over 1500). But with 22 to 28 mph cross-shore winds, it’s going to be a washing machine out there. That’s expert-only territory in terms of size, and the chop will make it a battle. Honestly, this setup looks more interesting for kite surfing than paddle surfing for most of that period.

The very end of the run, around Thursday the 21st, drops back to small 2ft to 2ft SSW groundswell, but the cross-shore wind hasn’t let up. It’s just more of the same – poor.

So, bottom line: there’s no surf worth chasing at Sandy Beach in this 16-day window. It’s a blank run, and for this area, that’s not totally unusual when the trade winds lock in. Stay patient, forecasts can change, but for now, save your energy.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

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

Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
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
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
0.4
SSW
14
1
ENE
8
0.4
SSW
14
0.4
SSW
14
1.4
ENE
6
1.6
ENE
6
1.6
ENE
6
1.7
ENE
7
1.6
ENE
7
1.8
ENE
7
1.7
ENE
7
1.4
ENE
8
1.4
ENE
8
1.4
ENE
7
0.6
SSW
14
0.8
SSW
14
0.7
S
20
0.9
S
18
1
S
18
1.3
S
16
Wave Graph
Metric surfscale
Energy kJ
81
80
107
77
73
148
207
201
270
261
340
286
210
204
193
165
269
373
515
620
890
Wind (km/h)
25
ENE
30
ENE
25
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
40
ENE
35
ENE
35
NE
35
ENE
30
ENE
25
ENE
25
ENE
30
ENE
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
Wind State
cross
cross
cross
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
cross-on
High Tide
10:22AM0.61m
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
clear
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
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
25
26
25
26
26
25
26
26
25
25
26
25
26
26
25
26
26
25
25
26
26
Feels °C
25
26
24
25
24
23
24
24
22
23
24
23
25
25
24
25
24
24
23
24
25
  • 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
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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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