
Surf Forecasts:
Sandy Beach surf forecast from 6 Sep 2026:
- Most powerful swell: Monday 7 Sep, 11AM (local time) - 8ft (2.4m), 13s period, ENE swell with 1,815 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 2.4m 13s and forecast to arrive on Monday (Sep 07) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 13s period and expected on Tuesday (Sep 08) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Mon 7th Sep) | 8ft (2.4m) 13s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – this is a tough one for the Sandy Beach (South Shore) area. The next 16 days are looking pretty grim for paddle surfing. We’ve got a lot of energy out there, but the wind is just killing it.
Right now, starting Saturday the 5th, we’ve got a solid 7ft swell from the ENE with a long 13-second period, packing a massive amount of energy (2370). But the wind is a fresh 22 mph cross-breeze, turning the lineup into a lumpy, cross-chop mess. The water temp is a balmy 81°, which is pretty normal for this time of year. It’s just not worth it.
This pattern just keeps going. Sunday the 6th sees the swell drop a touch to 6ft, but the wind goes cross-onshore, and we’ve got a risk of thunderstorms. That’s zero points for us. The start of the week, Monday the 7th, actually brings the biggest swell of the period at 8ft from the ENE with a 13-second period, and the energy level is through the roof (3336). But again, those cross-onshore winds and t-storms ruin it. That size with those winds would be a washing machine, and honestly, for anyone but the experts, 8ft is already pushing it. The rest of the first week is a write-off – fresh winds, choppy conditions, and not a single good window.
We hit a dry spell for well over a week. The finds are all poor or marginal. The only glimmer of hope comes way late in the forecast, on Wednesday the 16th, when the swell direction starts to shift to the SSW. But the swell is tiny, 3ft, and the wind is still a messy cross-breeze. The energy is actually moderate (854), but the waves are too small to do anything with.
The best chance we get is the morning of Friday the 18th of September. We’ll see a 4ft SSW groundswell with a very long 18-second period, and the energy is strong (1097). The wind is still a cross-breeze, but it’s a bit lighter at 18 mph. It’s marginal, but it’s the best we’ve got. Those long-period SSW swells can find the reefs and points better than the beach, but Sandy Beach is a beach and reef setup, so the long period might make it a bit too straight for the beach break. It’s a long way out, so don’t get your hopes up too high.
This is a classic case of a big, powerful ocean that just won’t line up for us. It’s a kite surfer’s dream for the next week, but for us wave riders, it’s a waiting game. Keep an eye on that SSW pulse, but for now, I’d say the board stays in the bag.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Sun night. Warm (max 27°C on Mon afternoon, min 25°C on Sat morning). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue morning, min 25°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 13 | ENE 13 | ENE 13 | ENE 12 | E 12 | ENE 12 | ENE 13 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | SSW 14 | SSW 13 | ENE 8 | ENE 7 | ENE 7 | ENE 13 | ENE 12 | ENE 12 | ENE 11 |
Wave Graph | |||||||||||||||||||||
1641 | 1654 | 1430 | 1100 | 1175 | 1338 | 1815 | 1360 | 1121 | 901 | 627 | 356 | 273 | 257 | 176 | 208 | 167 | 828 | 619 | 530 | 469 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross |
High Tide | 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 | 3:13PM0.59m | 3:51AM0.55m | |||||||
Low Tide | 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 | 9:14AM0.08m | 9:49PM0.03m | ||||||||
6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | |
mm | — | — | — | — | 2 | 10 | 2 | 3 | 1 | — | 1 | 3 | 1 | 2 | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 25 | 26 | 25 | 25 | 26 | 25 |
Feels °C | 24 | 24 | 26 | 25 | 25 | 26 | 26 | 28 | 28 | 27 | 27 | 29 | 30 | 30 | 27 | 24 | 25 | 25 | 25 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | ENE 13 | ENE 12 | E 12 | ENE 12 | ENE 13 | SW 14 | SW 14 | SW 12 | SSW 9 | ENE 10 | ENE 8 | ENE 8 | ENE 8 | E 12 | E 12 | SW 16 | ENE 12 | ENE 12 | ENE 11 |
647 | 650 | 1430 | 1100 | 1175 | 1338 | 1521 | 1830 | 3757 | 2368 | 464 | 325 | 177 | 149 | 165 | 141 | 141 | 211 | 619 | 530 | 469 | |
Swell 2 Height (m) Direction Period (s) | SSW 18 | NNE 10 | SSW 12 | SSW 12 | SSW 12 | SW 14 | SW 12 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | SSW 8 | SSW 8 | SSW 13 | E 12 | SSW 13 | SSW 12 | S 12 | SW 16 | SW 15 | SW 15 |
62 | 19 | 404 | 444 | 385 | 822 | 463 | 1360 | 1121 | 901 | 627 | 237 | 101 | 257 | 148 | 131 | 123 | 72 | 206 | 229 | 226 | |
Swell 3 Height (m) Direction Period (s) | NNE 10 | NNE 10 | SSW 16 | SSW 16 | SSW 15 | SSW 18 | SW 15 | SSW 17 | S 8 | SSW 15 | W 11 | SSW 14 | SSW 14 | SSW 8 | SSW 13 | SSW 16 | SW 18 | SW 9 | SSW 12 | SSW 11 | SSW 11 |
20 | 19 | 166 | 220 | 154 | 344 | 542 | 510 | 196 | 498 | 577 | 356 | 273 | 64 | 176 | 179 | 154 | 21 | 45 | 43 | 24 | |
Wind waves Height (m) Direction Period (s) | ENE 13 | ENE 13 | — | — | — | — | ENE 13 | SSE 8 | SSE 8 | S 10 | — | — | — | — | — | ENE 7 | ENE 7 | ENE 13 | — | — | — |
1641 | 1654 | — | — | — | — | 1815 | 221 | 345 | 832 | — | — | — | — | — | 208 | 167 | 828 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 47 | 16 | 47 | 47 | 42 | 111 | 5 | 62 | 57 | 62 | 5 | 5 | 16 | 47 | 47 | 16 | 47 | 42 | 47 | 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.










