Surf Forecasts:
Sandy Beach surf forecast from 1 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 2AM (local time) - 7ft (2.2m), 12s period, ENE swell with glassy winds.
- Most powerful swell: Saturday 5 Sep, 11PM (local time) - 7.5ft (2.3m), 14s period, ENE swell with 1,970 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 2AM (local time) - 7ft (2.2m), 12s period with ENE 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 (Sep 08) at 2AM. The primary swell is predicted to be 2.2m and 12s period with a secondary swell of 1.0m and 15s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Sandy Beach in the next 16 days are 2.3m 14s and forecast to arrive on Saturday (Sep 05) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 11s period and expected on Sunday (Sep 06) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 8th Sep) | 7ft (2.2m) 12s |
| Best Surf | 2AM (Tue 8th Sep) | 7ft (2.2m) 12s |
| Most Powerful | 11PM (Sat 5th Sep) | 7.5ft (2.3m) 14s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
G'day, Rusty here. Alright, let's get straight into it. For this stretch ahead, Sandy Beach is the only game in town, but honestly, it’s a tough one. We've got a long, scrappy run of poor surf conditions before we see anything worth paddling out for. The water sits at a warm 81°F, just about average for this time of year, so at least you won't need the thickest wetsuit.
The first recommendation isn't until Saturday, September 5th, and even then, it's only a marginal call. The whole first week is a write-off. From Tuesday the 1st through to Friday the 4th, it's all cross-shore winds and messy cross-chop with short-period, poor quality swell. The combined wave energy is moderate to strong, but it's all for nothing with the wind tearing it up. The swell is around 6 ft to 10 ft but with that 8-second period, it's just lumpy junk.
Saturday the 5th and Sunday the 6th start to shift. The swell period stretches out to 13 seconds, a proper groundswell, and the size hangs around 7 ft to 8 ft from the ENE. The combined energy jumps up, hitting 2122 on Saturday morning, which is strong. But we're still stuck with cross-shore winds in the fresh breeze range, so the ride is lumpy and the comments are "marginal." The wave quality is poor, so even with that energy, it's a struggle. For a beach and reef break like Sandy Beach, that long period will make it break a bit straight, but the energy is there.
The real standout is looking way ahead to Sunday, September 13th. It's a long way off, so the promise is there but the certainty is lower. We get a massive push of SSW swell hitting 10 ft to 12 ft in size with a solid 12-second period. The combined energy is a whopping 2606 to 3569, you'll feel that power. The wind lightens up to a gentle to moderate breeze, going cross-shore, and the conditions are described as "clean." This is the one to circle on the calendar. However, for Sandy Beach (a beach and reef break being an intermediate spot), a 10 ft to 12 ft swell is well into expert territory and too big for most. It's a powerful, clean-looking session for the brave and the experienced.
Before that, on Monday the 14th, the morning sees a 13 ft S swell with 9-second period and a moderate cross-shore, but again, the comment is that it's too big for the break. By the afternoon, it's back to poor conditions.
After that mid-month wave, the energy drops off a cliff. From the 15th onwards, we're back to small, weak, and messy conditions with poor surf until the 16th. The 13th of September is your only real punt, and if you've got a big board and nerves of steel, that's the window.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 26°C on Tue morning, min 25°C on Tue night). Mainly strong winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sat morning, min 25°C on Fri morning). Winds decreasing (strong winds from the ENE on Fri morning, light winds from the ENE by Sun night). | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 12 | E 13 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | E 12 | E 13 | E 12 | ENE 12 |
Wave Graph | |||||||||||||||||||||
432 | 464 | 507 | 541 | 456 | 768 | 844 | 711 | 806 | 768 | 574 | 520 | 1561 | 1408 | 1804 | 1687 | 1338 | 1155 | 1657 | 1378 | 1347 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross-on | glassy |
High Tide | 5:18PM0.36m | 7:19AM0.59m | 5:54PM0.28m | 8:36AM0.61m | 7:01PM0.22m | 9:55AM0.64m | 9:27PM0.19m | 11:03AM0.68m | 11:10PM0.21m | 12:00PM0.71m | 00:14AM0.26m | 12:48PM0.73m | 1:03AM0.31m | ||||||||
Low Tide | 12:53PM0.23m | 11:56PM0.04m | 2:47PM0.24m | 00:39AM0.05m | 5:18PM0.21m | 1:39AM0.06m | 6:33PM0.16m | 3:03AM0.07m | 7:10PM0.12m | 4:28AM0.06m | 7:41PM0.09m | 5:40AM0.04m | 8:09PM0.07m | ||||||||
6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | |
— | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 24 | 24 | 24 | 24 | 23 | 22 | 21 | 20 | 21 | 20 | 20 | 21 | 24 | 24 | 25 | 25 | 25 | 26 | 27 | 26 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | SSE 12 | SSE 12 | S 12 | E 14 | S 12 | SSW 12 | SSW 12 | SSW 11 | SW 11 | SW 11 | E 12 | E 13 | E 12 | ENE 12 |
329 | 314 | 364 | 422 | 318 | 279 | 206 | 283 | 439 | 449 | 472 | 520 | 541 | 497 | 435 | 278 | 360 | 1155 | 1657 | 1378 | 1347 | |
Swell 2 Height (m) Direction Period (s) | SSW 14 | S 12 | S 10 | SSE 10 | S 11 | S 11 | SSE 13 | E 12 | E 14 | E 14 | S 11 | E 13 | SW 18 | SSE 11 | S 12 | SW 16 | S 19 | SW 11 | SW 11 | SSW 17 | SSW 15 |
80 | 77 | 35 | 19 | 41 | 37 | 109 | 145 | 260 | 357 | 291 | 507 | 80 | 22 | 26 | 258 | 178 | 268 | 268 | 627 | 481 | |
Swell 3 Height (m) Direction Period (s) | S 10 | SW 14 | SW 14 | SW 14 | E 14 | SE 14 | S 10 | S 14 | SW 12 | SW 12 | S 13 | N 11 | NNE 10 | SSW 18 | SSE 10 | SSE 10 | S 12 | SSW 18 | SSW 17 | SW 11 | SW 12 |
30 | 51 | 51 | 30 | 66 | 54 | 18 | 146 | 6 | 6 | 219 | 10 | 20 | 61 | 20 | 19 | 24 | 340 | 486 | 194 | 325 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 13 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | — | — | — | — |
432 | 464 | 507 | 541 | 456 | 768 | 844 | 711 | 806 | 768 | 574 | 392 | 1561 | 1408 | 1804 | 1687 | 1338 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 110 | 47 | 59 | 59 | 110 | 111 | 113 | 63 | 63 | 61 | 48 | 47 | 55 | 16 | 16 | 16 | 16 | 42 | 16 | 0 |
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.











