Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 1 am 30 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
27.0°C
0.2° 

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 30 Aug 2026:

  • Most powerful swell: Friday 4 Sep, 11PM (local time) - 13ft (4.0m), 9s period, ENE swell with 2,517 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 4.0m 9s and forecast to arrive on Friday (Sep 04) at 11PM. 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 14s period and expected on Monday (Aug 31) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Fri 4th Sep)13ft (4.0m) 9s

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


The Lowdown

Alright folks, Rusty here. Gotta be straight with you – this is a tough stretch on the cards. Looking at the whole 16-day window, we’ve got a lot of wind and messy conditions to deal with, and honestly, I’m not seeing any real standout sessions worth getting excited about. The water temp is sitting at 81°, which is bang on average for this time of year, so at least you won’t need a thick wetsuit.

The only break on the radar is Sandy Beach – a beach and reef setup. It’s fairly consistent for swell, but the wind is the villain here. The optimum swell direction is from the ESE, but for the entire first week and beyond, we’re getting hammered by strong to near-gale cross-shore and cross-onshore winds from the ENE and NE. That means chop, lumps, and generally poor surf conditions. The swell energy is mostly moderate, with values sitting between 211 and 2606, but it’s all wasted on the wind.

There’s a small window around Saturday the 5th of September afternoon where the wind drops to a gentle breeze from the ESE, and the swell is 7 ft from the ENE at 8 seconds. The energy is still strong (1059), but it’s a cross-onshore and fairly choppy situation. It’s a ‘marginal’ call at best. Then on Tuesday the 8th of September, we get a morning with clean, cross-offshore wind from the NNW, but it’s a near gale at 31 mph – that’s too strong for any real fun and the swell is 10 ft, which is big and gnarly, strictly for experts. The afternoon that day is a bit better with a gentle cross-shore and 8 ft swell, but it’s still only a marginal 3 out of 10.

The rest of the run is a write-off. There are long gaps of several days, from the start right through to the 14th, where there’s no real recommendation. The 4th and 5th of September have some big, nasty stormy swell, and the 2nd of September has a super long period 16-second swell from the south, but the wind is cross-shore and lumpy, so it’s not working. For the last few days, the swell drops right off, with energy under 500 and continued poor conditions.

Honestly, if you’re a paddle surfer, this is a blank run. Given the persistent strong winds and the beach-and-reef setup, this is going to be more interesting for kite surfers than anyone else. Keep an eye on the forecasts, though – it can’t stay this poor forever.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Light rain (total 7mm), mostly falling on Fri night. Warm (max 26°C on Wed morning, min 25°C on Wed night). Winds increasing (fresh winds from the ENE on Wed morning, near gales from the ENE by Fri night).

Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
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
2
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
ENE
7
1.8
ENE
7
1.7
ENE
7
1.9
ENE
7
1.9
ENE
8
1.9
ENE
8
1.8
ENE
8
1.8
ENE
8
2.2
ENE
8
0.9
S
16
0.8
S
16
0.8
S
15
1.6
ENE
7
1.9
ENE
7
2.2
ENE
8
3
ENE
8
3.5
ENE
8
3.5
E
9
2.5
ENE
9
2.2
ENE
8
1.9
ENE
8
Wave Graph
Metric surfscale
Energy kJ
381
325
256
369
410
400
414
435
585
422
318
280
280
366
540
976
1657
2136
1004
660
463
Wind (km/h)
40
ENE
40
ENE
35
ENE
40
ENE
35
ENE
35
ENE
35
NE
35
ENE
30
ENE
35
ENE
35
ENE
35
ENE
45
ENE
40
NE
50
ENE
50
NE
50
ENE
50
ENE
30
E
15
ESE
25
ENE
Wind State
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
High Tide
4:17PM0.51m
5:19AM0.53m
4:46PM0.43m
6:14AM0.56m
5:18PM0.36m
7:19AM0.59m
5:54PM0.28m
8:36AM0.61m
7:01PM0.22m
9:55AM0.64m
9:27PM0.19m
11:03AM0.68m
11:10PM0.21m
Low Tide
10:34AM0.14m
10:56PM0.04m
11:35AM0.19m
11:23PM0.04m
12:53PM0.23m
11:56PM0.04m
2:47PM0.24m
00:39AM0.05m
5:18PM0.21m
1:39AM0.06m
6:33PM0.16m
3:03AM0.07m
7:10PM0.12m
4:28AM0.06m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
mod rain
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:13
6:13
6:13
6:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:47
6:46
6:46
6:45
6:45
6:44
6:43
 mm
7
4
2
3
Temp °C
26
26
26
25
25
25
25
26
25
26
26
26
25
25
25
25
25
25
26
27
27
Feels °C
23
23
24
21
22
21
22
24
22
24
24
25
21
21
20
19
19
19
25
29
27
  • 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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