
Surf Forecasts:
Sandy Beach surf forecast from 21 Jul 2026:
- Most powerful swell: Monday 27 Jul, 2PM (local time) - 6ft (1.9m), 14s period, E swell with 1,488 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 1.9m 14s and forecast to arrive on Monday (Jul 27) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 18s period and expected on Monday (Jul 20) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Mon 27th Jul) | 6ft (1.9m) 14s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Righto, folks, Rusty here. Let's have a good look at what's on the table for Sandy Beach over the next couple of weeks.
Honestly, the outlook is a bit of a tough one. We've got a long stretch of poor conditions ahead before anything remotely rideable shows up. The first real surf recommendation isn't until the morning of Sunday, the 26th of July, and even then it's only a marginal call. So, for the next several days, you're better off keeping the boards in the shed.
The whole first week is a write-off. From Monday the 20th right through to the afternoon of Saturday the 25th, it's all "poor surf conditions" – messy cross-shore winds, lumpy chop, and a general lack of quality. The swell is all over the place, but the wind is the real killer here, constantly blowing onshore or cross-shore, making a mess of everything.
The only glimmer of hope comes in the second week, starting on Sunday the 26th of July. The swell direction settles into a consistent E at 5 ft, with a period of 16 seconds. That's a nice, long-period groundswell. The combined energy is a very strong (2167), which means there's plenty of power in the water. However, the wind is still a fresh cross-shore from the ENE at 19 mph, which keeps the surf in that "marginal" category. It's not going to be clean, but there's enough energy to make it a session for the keen.
Things look a little better on Wednesday the 29th of July. The swell is up to 8 ft from the ENE, with a 12-second period, and the wind finally shifts to a cross-offshore from the NE at 12 mph. This is the standout of the whole 16-day window. The charts show "clean" conditions, and with a solid 8 ft ENE swell, Sandy Beach will have some power. The water temp is about 80°F and feels normal for this time of year. But you need to be ready for it – at 8 ft, this is not for beginners. It's for the experienced crew only. And with the break being "fairly consistent" and "often" crowded, expect a pack out there.
After that, it fades again. The last few days of July and the start of August are back to poor conditions with strong cross-shore winds and smaller, shorter-period windswell. The 14th of August offers a tiny 3 ft swell but with a fresh breeze, so it's another no-go.
So, the pick of the bunch is definitely Wednesday the 29th of July. It's a promising window of cleaner, bigger surf, but it's a long way out, so keep an eye on the forecasts. Everything else is a struggle.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Mon morning. Warm (max 26°C on Mon morning, min 24°C on Wed afternoon). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat morning. Warm (max 25°C on Thu morning, min 24°C on Thu morning). Mainly strong winds. | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | ENE 8 | S 16 | S 15 | S 14 | S 14 | S 13 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | ENE 7 | SSW 18 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | SSW 18 | E 17 | E 16 | E 16 | E 15 |
Wave Graph | |||||||||||||||||||||
199 | 321 | 339 | 329 | 311 | 277 | 317 | 426 | 363 | 412 | 395 | 464 | 360 | 440 | 604 | 410 | 572 | 969 | 1285 | 1237 | 1309 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on |
High Tide | 8:59AM0.45m | 7:13PM0.37m | 10:08AM0.51m | 7:46PM0.29m | 11:08AM0.55m | 8:50PM0.23m | 11:59AM0.59m | 10:38PM0.19m | 12:42PM0.62m | 11:56PM0.19m | 1:20PM0.64m | 00:50AM0.19m | 1:55PM0.66m | 1:32AM0.20m | |||||||
Low Tide | 2:57PM0.28m | 2:33AM0.04m | 5:25PM0.28m | 3:12AM0.05m | 7:38PM0.23m | 3:57AM0.05m | 8:24PM0.18m | 8:50PM0.15m | 5:38AM0.03m | 9:14PM0.12m | 6:24AM0.02m | 9:38PM0.11m | |||||||||
5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 7:14 | — | — | 7:14 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | |
mm | 2 | — | 2 | 2 | 1 | 4 | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 25 | 24 | 25 | 24 |
Feels °C | 25 | 24 | 23 | 26 | 24 | 24 | 22 | 22 | 23 | 21 | 21 | 22 | 22 | 21 | 20 | 22 | 22 | 22 | 21 | 22 | 20 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 16 | S 15 | ENE 7 | S 14 | S 13 | S 13 | E 11 | E 12 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | E 17 | E 16 | E 16 | E 15 |
142 | 321 | 339 | 136 | 311 | 277 | 215 | 123 | 139 | 412 | 395 | 464 | 329 | 340 | 232 | 391 | 572 | 969 | 1285 | 1237 | 1309 | |
Swell 2 Height (m) Direction Period (s) | S 16 | SW 18 | SW 16 | S 14 | SW 16 | E 13 | E 12 | S 10 | S 13 | E 12 | S 11 | S 13 | S 12 | S 12 | S 20 | SSW 16 | E 16 | SSW 18 | SSW 16 | SSW 16 | SSW 16 |
135 | 81 | 69 | 329 | 67 | 121 | 138 | 78 | 157 | 132 | 93 | 85 | 143 | 102 | 296 | 223 | 321 | 547 | 469 | 427 | 333 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | W 12 | E 12 | SW 17 | E 11 | SW 15 | SSW 24 | SSW 23 | SSW 22 | S 12 | SW 16 | S 11 | SSW 15 | S 21 | S 12 | E 14 | S 11 | S 11 | S 11 | S 10 | S 12 |
83 | 11 | 12 | 72 | 39 | 60 | 317 | 426 | 363 | 97 | 127 | 56 | 93 | 231 | 100 | 102 | 39 | 37 | 35 | 33 | 3 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | — | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 | NE 8 | ENE 7 |
199 | 193 | 173 | — | 168 | 158 | 171 | 149 | 226 | 285 | 349 | 371 | 360 | 440 | 604 | 410 | 477 | 493 | 378 | 358 | 279 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 48 | 16 | 47 | 47 | 47 | 47 | 49 | 48 | 57 | 59 | 47 | 55 | 57 | 48 | 47 | 57 | 18 | 47 | 55 | 47 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.










