
Surf Forecasts:
Sandy Beach surf forecast from 25 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 8PM (local time) - 10ft (3.0m), 13s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 28 Jul, 11PM (local time) - 11ft (3.5m), 13s period, ENE swell with 3,662 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 8PM (local time) - 10ft (3.0m), 13s period with E swell.
Best Forecast Surf Conditions for Sandy Beach this week:
The surf forecast for Sandy Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 8PM. The primary swell is predicted to be 3.0m and 13s period with a secondary swell of 0.7m and 14s. Another secondary swell of 0.6m and 9s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sandy Beach in the next 16 days are 3.5m 13s and forecast to arrive on Tuesday (Jul 28) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Jul 28) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Tue 28th Jul) | 10ft (3.0m) 13s |
| Best Surf | 8PM (Tue 28th Jul) | 10ft (3.0m) 13s |
| Most Powerful | 11PM (Tue 28th Jul) | 11ft (3.5m) 13s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s chat about what’s cookin’ at Sandy Beach.
First thing, I gotta be honest – the next week or so is a bit of a bummer for a decent surf. The wind’s stuck out of the ENE, blowing cross-shore, and it’s got some heft to it. That’s gonna leave the surface looking like a washing machine. The water’s running about average for this time of year, nothing special.
Saturday morning, July 25th, we’ve got a 7 ft east-northeast swell churning with a short 8-second period, but with a 22 mph cross-breeze, the conditions are just plain poor. The wave energy is high at 1170, but it’s all over the place. That afternoon, it drops to 3 ft from the SSW with a long 18-second period, but that cross-wind still messes it up. Not worth paddling out.
Sunday the 26th stays similar – 3 ft to 4 ft swells, with that cross-wind hanging around. The energy is still there (1219), but it’s lumpy cross-chop. Monday the 27th through Tuesday the 28th brings a little more size, up to 5 ft and then 7 ft, but the wind is still cross-shore and fresh. Tuesday afternoon does see a brief cleaner moment with a cross-offshore wind, and an 8 ft east swell with 13-second period, giving a massive energy reading of 2881. That’s moderate wave energy, but it’s still just a marginal call.
Now, Wednesday the 29th morning is the one to watch. The swell hits 10 ft from the east-northeast with a 11-second period, and the energy is strong at 1886. The wind swings to a moderate cross-onshore, which is a lot cleaner. But here’s the catch – that 10 ft is too big for this spot. The report says it’s predicted to be too big for Sandy Beach, so this is strictly for experts only. The wind and tide are favorable, but the power is immense. It’ll be a heavy, powerful wave, not for the faint of heart.
From Wednesday afternoon straight through to Sunday, August 9th, it’s a long stretch of poor conditions. The swell drops, the wind stays strong, and the chop is constant. There’s a little glimmer on Tuesday, August 4th, with a 6 ft east-northeast swell and a light cross-breeze, but it’s still a marginal, lumpy affair. The energy is moderate at 1076, but it’s not clean enough to get excited about.
So, the honest truth? The best on offer is that Wednesday morning, July 29th, for the big-wave crew. If you’re not an expert, you’re looking at a long wait. The rest of the window is a real struggle with that dominant cross-shore wind. It’s a tough run for Sandy Beach, but the ocean always has a way of turning things around.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Fri night, min 24°C on Sat night). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Mon night. Warm (max 27°C on Wed afternoon, min 25°C on Mon night). Mainly fresh winds. | ||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | ||||||||||||||
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 7 | ENE 8 | SSW 18 | SSW 18 | SSW 16 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | ENE 12 | ENE 11 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph | |||||||||||||||||||
482 | 493 | 572 | 547 | 469 | 499 | 697 | 753 | 804 | 1370 | 1520 | 2545 | 3474 | 1694 | 702 | 460 | 416 | 308 | 336 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-on | cross-on | on | cross-on | cross-on | cross-on |
High Tide | 11:56PM0.19m | 1:20PM0.64m | 00:50AM0.19m | 1:55PM0.66m | 1:32AM0.20m | 2:28PM0.68m | 2:09AM0.22m | 2:58PM0.69m | 2:46AM0.24m | 3:28PM0.69m | 3:26AM0.26m | 3:57PM0.68m | 4:08AM0.30m | ||||||
Low Tide | 8:50PM0.15m | 5:38AM0.03m | 9:14PM0.12m | 6:24AM0.02m | 9:38PM0.11m | 7:06AM0.01m | 10:01PM0.09m | 7:44AM-0.00m | 10:25PM0.09m | 8:21AM0.00m | 10:49PM0.08m | 8:58AM0.02m | 11:13PM0.07m | ||||||
— | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | |
7:13 | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | |
mm | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | 2 | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 27 | 27 | 26 | 26 | 26 |
Feels °C | 21 | 22 | 22 | 21 | 22 | 22 | 22 | 23 | 23 | 23 | 25 | 25 | 23 | 29 | 29 | 29 | 27 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | ENE 12 | ENE 11 | ENE 9 | ENE 8 | S 14 | ENE 8 | S 13 |
298 | 391 | 572 | 547 | 469 | 499 | 697 | 753 | 804 | 1370 | 1520 | 2545 | 3474 | 1694 | 702 | 460 | 181 | 308 | 166 | |
Swell 2 Height (m) Direction Period (s) | S 20 | SSW 16 | S 11 | E 15 | E 15 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | S 14 | S 14 | SSW 14 | SW 18 | S 13 | SSW 16 |
296 | 223 | 61 | 72 | 348 | 341 | 333 | 288 | 222 | 213 | 143 | 189 | 195 | 192 | 192 | 195 | 154 | 173 | 177 | |
Swell 3 Height (m) Direction Period (s) | S 12 | S 11 | E 13 | E 12 | S 11 | S 11 | SE 11 | SE 11 | S 10 | SE 11 | SSE 10 | SSE 10 | SW 21 | SW 21 | SSW 20 | SSE 5 | SW 13 | SSW 18 | E 17 |
100 | 63 | 54 | 47 | 20 | 20 | 5 | 4 | 8 | 4 | 10 | 10 | 18 | 17 | 37 | 9 | 7 | 207 | 90 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | NE 7 | NNE 6 | NNE 9 | NNE 9 | — | — | SE 4 | SE 5 | ENE 8 | — | ENE 8 |
482 | 493 | 425 | 459 | 382 | 344 | 301 | 289 | 242 | 107 | 168 | 137 | — | — | 3 | 35 | 416 | — | 336 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 48 | 55 | 55 | 47 | 48 | 55 | 47 | 47 | 110 | 16 | 47 | 50 | 5 | 52 | 5 | 42 | 5 | 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.










