Surf Forecasts:
Sandy Beach surf forecast from 10 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 8PM (local time) - 7.5ft (2.3m), 8s period, ENE swell with 637 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 2.3m 8s and forecast to arrive on Sunday (Jul 12) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 17s period and expected on Sunday (Jul 12) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sun 12th Jul) | 7.5ft (2.3m) 8s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
Hey, Rusty here again. Let’s talk in feet and miles per hour.
Honestly, this stretch is dead in the water if you’re after a proper surf at Sandy Beach. The whole 16-day outlook is a bummer.
It starts Friday 10 July with a messy cross-shore wind—ENE at 25 mph—and lumpy cross-chop on a 6ft swell that’s got a short period of 7 seconds. The combined energy is 506 (moderate), but with that wind and period, the waves are just ugly. That theme rolls through Saturday, Sunday, Monday, and Tuesday. The swell goes from 5ft to 7ft, but it’s all short-period windswell, and the wind never gives you a break.
Water temp is about normal for this time of year, nothing wild.
A little shift happens Wednesday 15 July afternoon when a 2ft, 14-second groundswell from the SSW shows up. But the wind’s still cross-shore, so the surface stays lumpy. Thursday 16 July is much the same—2ft from the SSW with a very long period of 16-17 seconds. The energy is moderate (333-425), but that fresh cross-shore wind keeps it ugly. The long period would be gold if the wind went offshore, but it doesn’t. And with waves that small, it’s barely worth paddling out for.
From Friday 17 July right through the end, there’s a tease of even longer-period SSW swell, dropping to 2ft to 3ft, with periods hitting 19 seconds. The combined energy numbers pop into the mid-400s (448 on Friday 24 July afternoon, 486 on Saturday 25 July morning). That’s real ocean energy. But Sandy Beach is a beach and reef setup—a long-period south swell tends to pitch up fast and close out. It wants a point or reef. Plus the wind, ENE or NE at 16-25 mph, stays cross or cross-on, so it stays lumpy and hard work.
If you kite surf, this whole month is probably more interesting than it is for paddle surfing—strong cross-shore winds and some proper open-ocean swell. But for a surfer? Nah. The only maybe-moment is the last few days around 25 July if that SSW swell holds and the wind eases off, but right now it’s a long shot. No standouts here. Just poor conditions, one day after another.
Sandy Beach is a fairly consistent spot, so usually it doesn’t stay flat for long, but this run is a real dud.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Thu night, min 24°C on Thu night). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Warm (max 25°C on Tue morning, min 24°C on Sun night). Mainly strong winds. | ||||||||||||||||||||
Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thu 16 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | SSW 17 | ENE 7 | SSW 14 | SSW 16 | SSW 16 | SSW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 438 | 390 | 307 | 443 | 472 | 355 | 324 | 344 | 471 | 489 | 373 | 336 | 293 | 257 | 257 | 197 | 185 | 178 | 314 | 175 | 195 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross |
High Tide | 10:28PM0.22m | 12:36PM0.72m | 11:48PM0.19m | 1:24PM0.77m | 00:55AM0.18m | 2:10PM0.81m | 1:53AM0.19m | 2:55PM0.82m | 2:47AM0.21m | 3:38PM0.81m | 3:40AM0.23m | 4:19PM0.78m | 4:35AM0.27m | 4:58PM0.72m | |||||||
Low Tide | 4:54AM-0.05m | 8:27PM0.12m | 5:46AM-0.07m | 9:12PM0.08m | 6:39AM-0.08m | 9:53PM0.05m | 7:31AM-0.09m | 10:32PM0.03m | 8:22AM-0.08m | 11:09PM0.02m | 9:12AM-0.05m | 11:45PM0.02m | 10:02AM0.01m | ||||||||
 |  | | | | | | | | | |  | | |  |  |  | | | | | |
 | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — |
 | 7:15 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | 2 | — | — |
Temp °C | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 21 | 21 | 20 | 21 | 22 | 22 | 22 | 21 | 21 | 20 | 20 | 21 | 21 | 22 | 22 | 23 | 23 | 23 | 24 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | SSW 11 | SW 19 | SSW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 15 | SSW 15 | SW 14 | SW 14 | SW 14 | W 15 | W 15 | W 15 | ENE 7 | W 14 | W 14 |
| kJ | 75 | 71 | 42 | 184 | 221 | 316 | 309 | 376 | 367 | 353 | 287 | 272 | 208 | 191 | 186 | 227 | 221 | 218 | 85 | 203 | 203 |
Swell 2 Height (m) Direction Period (s) | W 13 | W 13 | SW 21 | S 12 | W 14 | W 13 | W 13 | S 13 | SSE 12 | W 12 | SSE 12 | W 18 | W 18 | W 16 | W 16 | SSW 13 | SW 13 | SSW 14 | SSW 16 | NNE 8 | SSW 17 |
| kJ | 13 | 13 | 109 | 41 | 63 | 54 | 54 | 29 | 28 | 26 | 27 | 97 | 152 | 190 | 188 | 111 | 164 | 178 | 314 | 45 | 195 |
Swell 3 Height (m) Direction Period (s) | S 15 | SSW 21 | W 13 | W 13 | S 12 | S 12 | S 11 | W 12 | W 12 | SSE 12 | W 12 | SSE 11 | SW 18 | SSW 19 | SW 19 | SSW 17 | SW 18 | SW 18 | W 15 | SSW 16 | SSW 13 |
| kJ | 17 | 45 | 29 | 55 | 44 | 25 | 22 | 27 | 26 | 28 | 26 | 25 | 82 | 146 | 94 | 197 | 152 | 154 | 212 | 175 | 113 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | NE 7 | ENE 7 | ENE 7 | — | ENE 6 | ENE 7 |
| kJ | 438 | 390 | 307 | 443 | 472 | 355 | 324 | 344 | 471 | 489 | 373 | 336 | 293 | 257 | 257 | 184 | 185 | 159 | — | 113 | 117 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 63 | 47 | 55 | 48 | 55 | 57 | 47 | 55 | 61 | 49 | 47 | 48 | 16 | 47 | 48 | 16 | 47 | 47 | 16 | 47 | 55 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sandy Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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