Sandy Beach Surf Break

Lat Long: 21.29° N 157.67° W

Sandy Beach Surf Forecast and Surf Report

Issued: 1 am 15 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sandy Beach sea temperature is
26.2° C
0.1° 

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 15 Jul 2026:

  • Most powerful swell: Sunday 19 Jul, 2AM (local time) - 6ft (1.8m), 8s period, ENE swell with 375 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 1.8m 8s and forecast to arrive on Sunday (Jul 19) 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 0.7m 15s period and expected on Wednesday (Jul 15) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Sun 19th Jul)6ft (1.8m) 8s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on the table for the next couple of weeks.

Right off the bat, I gotta be straight with you – this is a tough stretch. For the first ten days, basically from now through the 24th of July, the surf is just not cooperating. It’s a long, flat spell with nothing but poor conditions and choppy, lumpy cross-shore winds. You’re looking at a solid gap of about a week and a half with no real recommendations. The only real glimmer on the horizon starts to appear around the 24th of July, when things shift from "poor" to "marginal".

The best of a bad bunch – and honestly, the only thing even worth talking about as a stand-out – is Sandy Beach. This is a beach and reef setup, fairly consistent, but it’s exposed, and crowds are often around. The real potential kicks in around the 26th of July (Sunday) and into the 27th of July (Monday). We’re looking at a decent pulse of swell from the East, pushing 4 ft to 4 ft. The period stretches out to a very long 16 seconds. That’s proper groundswell energy, and when it hits a reef setup like this, it can mean some real shape. The combined energy is strong, hitting 1271 to 1359 – that’s what we want to see. The water temp is about 79°, which is normal for the time of year. The catch? The wind is still cross-shore, a fresh breeze from the ENE and NE, so it’s not going to be glassy. It’ll be lumpy, but with that much energy and that long period, the sets should have some push. Just be aware, with a period over 15 seconds, this kind of long groundswell can break a bit straight on a beach break, but Sandy Beach’s reef structure should handle it better than a pure sand bottom.

Before that, from the 24th of July (Friday) onward, you see a slight uptick to "marginal" with a score of 1 out of 10. The swell is still small, around 2 ft to 3 ft, but the period is a very long 18 seconds. The energy is moderate to strong (655 to 712). It’s an option for the die-hards, but it’s really just a warm-up for the main event on the 26th and 27th.

After the 27th, the swell drops back a bit but holds some energy through the 28th and 29th of July, with waves around 3 ft to 5 ft and periods of 11 to 13 seconds. The wind stays cross and fresh, so the quality is still "poor" on paper, but if you’re desperate, there’ll be waves to ride. The 29th of July afternoon shows a 5 ft swell from the ENE with 11 seconds – that could actually be a bit of size for an intermediate, but the onshore/cross component will make it a messy beast.

Bottom line: The first week and a half is a write-off. The best bet is Sandy Beach from the 26th of July for a few days. It’s not perfect, but it’s the only thing with real grunt on the horizon. Keep an eye on that long-period E swell.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Fri night. Warm (max 25°C on Wed morning, min 24°C on Thu night). Mainly fresh winds.

Days 4-6 Weather Summary

Some drizzle, heaviest during Sat morning. Warm (max 25°C on Sat morning, min 24°C on Sat night). Mainly fresh winds.

Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
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
1
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)
1.1
NE
7
0.8
ENE
7
0.8
SSW
16
0.6
SSW
16
0.6
SSW
17
1.3
ENE
6
1.2
ENE
6
0.6
SSW
16
0.6
SSW
14
0.6
SSW
13
0.7
SSW
14
1.8
ENE
8
1.6
ENE
8
1.5
ENE
8
1.1
ENE
8
0.6
S
14
0.8
S
16
0.8
S
15
0.9
S
14
0.9
S
14
0.9
S
13
Wave Graph
Metric surfscale
Energy kJ
118
64
314
175
195
145
103
196
149
141
210
375
314
298
167
142
321
271
329
302
273
Wind (km/h)
15
E
25
ENE
20
ENE
30
ENE
35
ENE
30
ENE
35
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
30
NE
25
ENE
20
NE
30
NE
25
ENE
30
ENE
35
ENE
30
ENE
Wind State
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross-on
High Tide
4:19PM0.78m
4:35AM0.27m
4:58PM0.72m
5:33AM0.31m
5:35PM0.64m
6:37AM0.35m
6:10PM0.55m
7:46AM0.40m
6:42PM0.45m
8:59AM0.45m
7:13PM0.37m
10:08AM0.51m
7:46PM0.29m
Low Tide
9:12AM-0.05m
11:45PM0.02m
10:02AM0.01m
00:20AM0.02m
10:55AM0.08m
00:53AM0.03m
11:55AM0.16m
1:26AM0.03m
1:10PM0.23m
1:58AM0.03m
2:57PM0.28m
2:33AM0.04m
5:25PM0.28m
3:12AM0.05m
clear
clear
part cloud
clear
clear
part cloud
clear
clear
rain showers
rain showers
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:58
5:58
5:58
5:58
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:15
7:14
7:14
7:14
 mm
1
1
1
Temp °C
25
25
25
25
25
25
25
25
24
25
25
25
24
24
24
25
25
25
25
25
25
Feels °C
26
25
24
25
23
24
23
23
22
23
24
24
22
21
23
25
23
23
24
23
23
  • 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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