Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 7 pm 07 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, 2AM (local time) - 11ft (3.5m), 9s period, ENE swell with 1,728 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 3.5m 9s and forecast to arrive on Saturday (Aug 15) at 2AM. Winds are predicted to be cross-shore 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 2AM (Sat 15th Aug)11ft (3.5m) 9s

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 – this is a tough one for Sandy Beach. We’re looking at a long, frustrating stretch of poor conditions, so don’t be in a rush to grab your board.

Right from the start of the period, Saturday, August 8th, it’s a no-go. We’ve got a fresh cross-shore wind howling at 22 mph, whipping up a lumpy cross-chop on a 5 ft swell. The wave energy is a weak 274, and the period is a short, powerless 6 seconds. This isn’t surf, it’s a washing machine.

This pattern sticks around for days. Through Sunday, Monday, and into Tuesday, it’s the same story: cross-shore winds, fresh breezes, and swell that’s all over the place. The combined energy does climb into the moderate range (500-559), but with these onshore angles, it’s just messy. The water temperature is about average for this time of year, so nothing to write home about.

We get a bit of a tease on Wednesday, August 12th, and Thursday, August 13th. A long-period groundswell from the south shows up, with periods of 18 and 16 seconds, and the energy jumps into the strong territory (909 to 1054). The problem is, the swell height is only 3 ft to 4 ft, so it’s small and heavily lined up, and the wind is still a fresh to strong cross-shore. It’s a frustrating look – the potential is there, but the conditions won’t let it happen.

Then things get nasty. Friday, August 14th, we see a near-gale force wind from the east-northeast at 31 mph, with an 8 ft to 10 ft swell. The energy rockets to 1481, but it’s a total blowout. By Saturday, August 15th, we’re looking at 13 ft swell with a very strong 3293 energy, but the wind is a strong cross-onshore creating a complete mess. Honestly, this setup looks far more interesting for kite surfing than paddle surfing. It’s massive, powerful, but totally unsurfable for a surfer.

The swell drops into the 6 ft to 5 ft range from Monday, August 17th, through the rest of the period, but the wind stays stubbornly cross-shore. The energy fades back to weak levels (220-392), and the period is short again. There’s just no window for clean, rideable waves.

The bottom line: There is absolutely no standout, no good option anywhere in this 16-day forecast. The wind never turns offshore, and the swell is either too weak, too short-period, or blown to bits by strong winds. For a spot that’s usually fairly consistent, this is a rough run. But don’t lose hope – forecasts can change, and the ocean always has a way of turning it around.

Rusty, signing off.

Short Range Forecast

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

Days 5-7 Weather Summary

Mostly dry. Warm (max 26°C on Mon night, min 25°C on Mon night). Mainly strong winds.

Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
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
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
19
1.4
ENE
6
1.5
ENE
6
1
E
7
1.5
ENE
7
1.5
ENE
8
1.9
ENE
7
1.6
ENE
8
1.5
ENE
8
1.6
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
1.1
S
15
2.5
ENE
8
Wave Graph
Metric surfscale
Energy kJ
148
144
177
102
225
256
356
300
240
262
208
269
276
509
498
520
734
559
693
Wind (km/h)
25
ENE
35
ENE
35
ENE
30
ENE
30
NE
35
NE
35
ENE
30
ENE
30
NE
30
ENE
35
ENE
30
ENE
30
ENE
35
ENE
35
ENE
35
ENE
40
NE
40
NE
45
ENE
Wind State
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
High Tide
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
3:49PM0.71m
4:15AM0.41m
Low Tide
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
9:11AM0.01m
10:50PM0.04m
part cloud
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
<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
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:05
7:05
7:04
7:02
7:02
7:01
 mm
Temp °C
25
26
25
25
25
25
25
26
26
26
25
25
25
25
25
26
26
26
26
Feels °C
24
24
22
23
23
23
23
25
24
26
23
22
23
22
22
23
23
23
22
  • Map Icons:
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  • 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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