Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 7 pm 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
26.7° 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 31 Jul 2026:

  • Most powerful swell: Saturday 1 Aug, 5AM (local time) - 10ft (3.0m), 8s period, E swell with 1,220 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 3.0m 8s and forecast to arrive on Saturday (Aug 01) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 15s period and expected on Friday (Jul 31) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Sat 1st Aug)10ft (3.0m) 8s

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


The Lowdown

Alright folks, Rusty here. Let’s be real about Sandy Beach for the next couple of weeks. It’s a rough stretch.

The whole 16-day run is a long grind of poor conditions. There isn’t a single standout session across the entire forecast. The wind is relentless, coming out of the ENE almost the whole time, which is cross-shore or cross-onshore here. That’s going to keep the ocean lumpy, choppy, and messy. The swell is mostly short period windswell (8 seconds or less), disorganised, and blown out. The best advice I can give is to keep an eye on the charts – conditions like this don’t usually stay poor forever, and a forecast change could turn things around.

We start right now, on Friday the 31st of July. The morning shows 6 ft of ENE swell at an 8-second period, but the wind is a strong 25 mph cross-shore. That’s a mess. The combined energy is moderate at 687. By the afternoon, the swell bumps up to 7 ft, but the wind is still hammering it. The same story repeats into Saturday the 1st and Sunday the 2nd of August – swell gets up to 10 ft on Saturday morning, which is solid (energy at 1394), but it’s blown to bits by strong cross-shore winds. The period stays at 8 seconds, so it’s all windswell. That big swell is only for experts, and even then, it won’t be pretty.

Monday the 3rd sees the swell drop to 5 ft - 6 ft, but the wind is still a fresh 19 mph cross-shore. The water temp is about average for this time of year, nothing unusual. The whole first week is a write-off.

On Tuesday the 4th of August, we get a little change. The swell drops to 5 ft - 5 ft, but the period stretches to 11 seconds, bringing in some longer-period groundswell energy. The combined energy is moderate at 653. The wind is still cross-shore, though down to a moderate 12 mph. The conditions go from “poor” to “marginal.” It’s not good, but it’s the least bad session in the first week. The cross-chop will still be there, so don’t expect perfection.

Then we hit a gap. From Wednesday the 5th through to Sunday the 9th, it’s back to poor surf conditions with short period swell and moderate to fresh cross-shore winds. The swell stays between 4 ft and 7 ft, but it’s all messy. Not worth paddling out.

The second week starts on Monday the 10th of August. The swell drops dramatically to 3 ft, but the period jumps to 16 seconds from the SSW. That’s a very long period groundswell. The combined energy is moderate at 779. The wind is still cross-onshore, though, so the surface will be choppy. It’s a “poor” call. The size is tiny, and the wind is wrong. Long period swells like this are fussy – they need a clean face to work, and they aren’t getting it here.

From Tuesday the 11th through to the end of the forecast on Saturday the 15th of August, the swell stays very small – 2 ft to 3 ft – with long periods from the south. The wind is still from the ENE, mostly cross or cross-onshore. The combined energy drops to between 247 and 555. The most promising session in this whole run is probably Friday the 14th of August. The morning has 2 ft of S swell at 14 seconds, with a gentle 9 mph cross-shore wind. The afternoon is even lighter, with a light 6 mph breeze and a 19-second period – that’s extremely long. The combined energy is 490. It’s only marginal, but it’s the closest we get to clean. The waves will be small and slow, with long waits between sets. It’s a tricky call for a longboard on a very calm day.

So, to sum it up: there’s no real winner here. The whole 16-day window is dominated by strong cross-shore winds and messy, short period swell. The two mildly better moments are the morning of Tuesday the 4th of August, with a moderate cross-shore and 11-second groundswell, and the afternoon of Friday the 14th of August, with very light wind and a super long period south swell. Neither is a standout. For experienced surfers, the bigger 10 ft day on the 1st of August is big, but it’s blown out. Honestly, this setup looks more interesting for kite surfing than paddle surfing, given the consistent cross-shore wind and the size.

Stay patient, and check back in a few days.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Thu night. Warm (max 27°C on Thu night, min 25°C on Fri afternoon). Winds increasing (moderate winds from the E on Thu night, strong winds from the ENE by Fri night).

Days 5-7 Weather Summary

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

Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
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
1
1
1
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)
1.5
E
7
1.8
ENE
8
2.1
ENE
8
3
E
8
3
E
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.3
ENE
8
2
ENE
8
1.7
ENE
8
1.5
ENE
8
1.7
ENE
12
1.6
ENE
11
1.5
ENE
11
1.4
ENE
10
1.3
ENE
9
1.2
ENE
9
1
ENE
6
Wave Graph
Metric surfscale
Energy kJ
245
375
469
1130
1220
871
889
844
722
541
394
321
811
593
505
373
280
218
81
Wind (km/h)
25
ENE
40
ENE
40
ENE
45
ENE
45
ENE
40
ENE
45
ENE
40
ENE
35
ENE
35
ENE
30
NE
30
NE
25
ENE
20
NE
25
NE
15
ENE
25
ENE
25
ENE
30
ENE
Wind State
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross-on
High Tide
4:08AM0.30m
4:25PM0.65m
4:55AM0.33m
4:53PM0.60m
5:48AM0.38m
5:22PM0.53m
6:48AM0.43m
5:53PM0.45m
7:57AM0.48m
6:26PM0.37m
9:10AM0.55m
7:10PM0.29m
Low Tide
11:13PM0.07m
9:38AM0.05m
11:37PM0.06m
10:23AM0.11m
00:02AM0.05m
11:17AM0.16m
00:29AM0.04m
12:27PM0.23m
00:59AM0.04m
2:07PM0.27m
1:37AM0.03m
4:33PM0.27m
2:24AM0.02m
thunderstorm
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:03
6:03
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:09
7:08
7:08
7:07
7:07
7:07
 mm
1
Temp °C
27
26
25
25
25
26
25
25
25
25
25
26
25
26
26
26
26
26
26
Feels °C
28
24
21
21
20
21
21
20
21
21
23
24
23
26
26
26
26
26
26
  • 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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