Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 1 am 08 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
26.9° C
0.3° 

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 8 Aug 2026:

  • Most powerful swell: Saturday 15 Aug, 8AM (local time) - 16ft (5.0m), 14s period, ENE swell with 10,461 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 5.0m 14s and forecast to arrive on Saturday (Aug 15) at 8AM. 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 19s period and expected on Saturday (Aug 08) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Sat 15th Aug)16ft (5.0m) 14s

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


The Lowdown

Alright folks, Rusty here. Let’s be honest, the next couple of weeks at Sandy Beach are looking like a scratchy, frustrating stretch. We’ve got a solid run of cross-shore and onshore winds that are going to chop up whatever comes through. For the first week, from the 8th through the 14th, there’s surf, but it’s messy. Chest to head-high waves, but with a fresh cross-breeze on ’em, it’s gonna be lumpy and hard to find a clean line. The energy is moderate, running from a few hundred up into the low thousands, but there’s no shape to it. Water temp is 80°, which is pretty normal for this time of year.

Now, here’s the one that gets your heart racing. The 15th of August. A big, powerful east swell is forecast, and the wind actually eases a bit. The energy readings are huge, over 40000. That’s some serious, serious power. But here’s the problem: size. By Saturday afternoon, that swell is predicted to be at 33 feet. That is way, way too big for Sandy Beach. It’s a beach and reef setup, and at that size, it’s just going to be a full-on maelstrom. The wind might be favorable, but the swell is too big for this break. It’s a real shame, because it would be epic if it was half that size.

Right after that, the swell drops, but the wind stays on it. From the 16th to the 18th, we’re back to cross-shore breezes with a dropping swell, so it stays messy. There’s some long-period south groundswell, but it’s coming through a cross-breeze, so it won’t be clean.

The 19th gives us a small break. For one morning, we get a gentle breeze from the southeast, which is onshore but light. The swell is small, around 4 feet from the east-northeast with a short 7-second period. It’s not going to be great, but it might clean up the surface a touch. That’s about the best we can say for it.

The rest of the run into the 23rd is more of the same – moderate cross-shore winds and weak, grovelly surf. The energy is weak to moderate, and it’s not looking like it’ll turn on.

So, plain and simple, there’s not a single day in this whole 16-day window that I’d be waxing up for with excitement. The closest we get to something interesting is that 15th, but it’s just too big. For the rest, you’re fighting the wind more than you’re riding waves. If the wind ever lays down, it could turn on, but as it stands, we’re in a waiting game.

Rusty out.

Short Range Forecast

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

Days 4-6 Weather Summary

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

Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
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)
1.3
ENE
6
1.4
ENE
6
1.1
NE
7
1.5
ENE
7
1.6
ENE
8
1.9
ENE
7
1.6
ENE
8
1.5
ENE
8
1.8
E
7
1.4
ENE
7
0.8
SSW
14
0.6
S
20
0.9
S
18
0.9
S
18
1
S
16
1.2
S
16
1.2
S
15
1.1
S
15
2.5
ENE
8
2.5
ENE
8
3.5
ENE
9
Wave Graph
Metric surfscale
Energy kJ
139
160
115
225
296
345
266
234
320
208
269
276
509
498
520
734
662
537
746
954
2272
Wind (km/h)
35
ENE
35
NE
30
ENE
30
NE
35
NE
35
ENE
30
NE
30
NE
30
ENE
30
ENE
35
ENE
30
ENE
35
ENE
35
NE
35
ENE
40
NE
45
ENE
45
NE
50
NE
50
NE
55
ENE
Wind State
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
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
3:49PM0.71m
4:15AM0.41m
4:22PM0.64m
Low Tide
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
9:11AM0.01m
10:50PM0.04m
10:01AM0.07m
11:17PM0.04m
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:07
6:07
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:05
7:04
7:02
7:02
7:01
7:00
 mm
Temp °C
26
25
25
26
26
25
26
26
25
26
25
25
25
25
26
26
25
25
25
26
26
Feels °C
24
22
23
25
24
23
25
24
24
25
23
23
23
22
23
23
21
21
20
22
21
  • 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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