
Surf Forecasts:
Sandy Beach surf forecast from 5 Sep 2026:
- Most powerful swell: Monday 7 Sep, 8AM (local time) - 8ft (2.5m), 12s period, ENE swell with 1,875 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 2.5m 12s and forecast to arrive on Monday (Sep 07) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 14s period and expected on Monday (Sep 07) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Mon 7th Sep) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, Rusty here. Let's look at what's on the table for Sandy Beach.
Right off the bat, I gotta be straight with you—this is a grim stretch. We're looking at a 16-day window with hardly a single window of clean, decent surf. The setup is almost constantly getting hammered by fresh cross-shore winds, mostly from the ENE, and that's just not doing the waves any favors. The water temp is about average for this time of year, so no surprises there.
The first few days, from Saturday the 5th through to Monday the 9th, we've got some swell on the menu, but it's a write-off. Saturday morning, we're looking at a 7ft ENE swell with a 13-second period, but it's accompanied by a fresh cross-shore breeze that's got the surface all lumpy and cross-chop. The combined energy is high (2408), but it's useless. That same pattern hangs around through Sunday, with a 7ft ENE swell (1808 energy) and still that messy cross-shore wind. By Sunday afternoon, the wind shifts to cross-onshore, and it's just choppy and poor. Monday gets even worse with onshore winds and a 8ft ENE swell—just a total loss.
There's a brief drop in swell size mid-week, but the wind doesn't let up. Wednesday the 9th sees tiny 3ft SSW swell, but with a fresh cross-shore wind, it's not worth paddling out for. The energy drops to 804, and it's still a no-go.
The whole second week, from the 10th to the 20th, is a desert. The wind stays relentless, mostly from the ENE at 19 to 25 mph, with a mix of cross and cross-on shore directions. The swell direction flips around, but the quality is consistently poor. The combined energy values are mostly in the low to mid hundreds, which is weak to moderate, but it doesn't matter because the wind chops it all to pieces. There's a little spike on the 16th with a long-period 3ft SSW groundswell (18 seconds, 1062 energy), but it's still a marginal, lumpy mess with 19 mph cross-shore winds.
Honestly, there's not a single standout session in this whole 16-day window. The best of a bad bunch might be a early morning on the 16th when the long-period SSW groundswell rolls in, but with that fresh cross-shore breeze, it's a gamble. The swell direction is from the SSW, which is not the optimum ESE direction for Sandy Beach, so the waves will be wrapping in awkwardly. For anyone but the most dedicated, this is a time to leave the board in the car.
This is a tough call, but I'd say the whole forecast is a hard pass. Don't get too down, though—it tends not to stay this poor for long, and forecasts can change.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Sun afternoon. Warm (max 27°C on Mon morning, min 25°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Mon night. Warm (max 27°C on Mon night, min 25°C on Wed night). Winds increasing (light winds from the ESE on Tue night, strong winds from the ENE by Wed night). | ||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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 14 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | E 13 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | SSW 14 | SSW 14 | SSW 13 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | |||||||||||||||||||
1842 | 1679 | 1654 | 1568 | 1240 | 1108 | 1360 | 972 | 1568 | 1102 | 724 | 560 | 356 | 273 | 204 | 242 | 261 | 273 | 297 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross | cross-on |
High Tide | 9:27PM0.19m | 11:03AM0.68m | 11:10PM0.21m | 12:00PM0.71m | 00:14AM0.26m | 12:48PM0.73m | 1:03AM0.31m | 1:30PM0.72m | 1:48AM0.38m | 2:07PM0.69m | 2:29AM0.44m | 2:41PM0.65m | 3:11AM0.50m | ||||||
Low Tide | 3:03AM0.07m | 7:10PM0.12m | 4:28AM0.06m | 7:41PM0.09m | 5:40AM0.04m | 8:09PM0.07m | 6:40AM0.03m | 8:36PM0.05m | 7:34AM0.03m | 9:01PM0.04m | 8:25AM0.05m | 9:26PM0.04m | |||||||
— | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | |
6:44 | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | |
mm | — | — | — | — | — | 2 | 6 | 2 | 2 | 2 | — | — | 1 | — | — | 1 | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 25 | 26 | 25 | 25 |
Feels °C | 23 | 24 | 24 | 25 | 25 | 25 | 26 | 28 | 28 | 28 | 28 | 28 | 31 | 27 | 25 | 22 | 23 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | ENE 13 | SSW 12 | ENE 12 | ENE 12 | SW 14 | SW 14 | SW 13 | SW 11 | ENE 11 | ENE 9 | ENE 8 | ENE 8 | SSW 13 | E 12 | SSW 12 | E 13 |
504 | 647 | 650 | 1568 | 548 | 1108 | 1360 | 1418 | 2350 | 3160 | 1340 | 560 | 272 | 197 | 153 | 176 | 139 | 123 | 215 | |
Swell 2 Height (m) Direction Period (s) | N 11 | SSW 18 | NNE 10 | SSW 12 | SW 16 | SSW 12 | SSW 14 | E 13 | ENE 12 | ENE 12 | ENE 11 | SSW 9 | SSW 8 | SSW 14 | SSW 13 | E 12 | SSW 13 | SW 18 | SW 16 |
10 | 62 | 19 | 614 | 255 | 429 | 1080 | 972 | 1568 | 1102 | 724 | 297 | 158 | 273 | 204 | 148 | 133 | 154 | 211 | |
Swell 3 Height (m) Direction Period (s) | SSW 20 | NNE 10 | NNE 10 | SSE 10 | SSE 10 | SW 14 | SSW 18 | SSW 17 | SSW 17 | SSW 15 | SSW 15 | W 10 | SSW 14 | SSW 8 | E 13 | S 7 | SW 16 | E 12 | SSW 12 |
38 | 20 | 19 | 19 | 19 | 412 | 260 | 492 | 589 | 481 | 474 | 338 | 356 | 64 | 163 | 26 | 133 | 70 | 47 | |
Wind waves Height (m) Direction Period (s) | ENE 14 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | — | — | ENE 7 | — | — | SSW 9 | — | — | ENE 8 | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
1842 | 1679 | 1654 | 816 | 1240 | — | — | 195 | — | — | 552 | — | — | 270 | — | 242 | 261 | 273 | 297 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 17 | 47 | 48 | 16 | 47 | 47 | 16 | 57 | 42 | 57 | 5 | 5 | 5 | 47 | 47 | 47 | 48 | 110 | 16 |
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.










