
Surf Forecasts:
Sandy Beach surf forecast from 4 Aug 2026:
- Most powerful swell: Tuesday 4 Aug, 2AM (local time) - 5ft (1.5m), 12s period, ENE swell with 623 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 1.5m 12s and forecast to arrive on Tuesday (Aug 04) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 14s period and expected on Thursday (Aug 06) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Tue 4th Aug) | 5ft (1.5m) 12s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s get real about what’s coming down the pipe for Sandy Beach. I gotta be straight with you – the next two weeks look pretty grim for a proper paddle session. The forecast is a long stretch of lumpy, cross-shore chop, and the numbers just don’t lie.
Right now, the water’s sitting at a warm 81°, which is pretty much spot on for this time of year, so you won't need a thick suit. But the problem is the wind. For the next week, we’re looking at a relentless ENE breeze, 19 mph to 22 mph, blowing straight across the break. That’s kicking up a messy cross-chop, ruining what little shape the swell has. The combined energy is moderate at best, around 452 on Monday, but it’s all junk. The swell is coming from the ENE, which isn't the optimum direction for this spot, and the period is a short, weak 8 seconds. Nothing to get excited about.
This poor run continues all the way through the first week. Tuesday and Wednesday are the same story: 5 ft to 4 ft of weak, short-period ENE swell, ruined by 9 mph to 16 mph cross-shore winds. The combined energy drops to 363 on Wednesday. Thursday and Friday get even smaller, down to 1 ft, though we see a long-period SSW swell pop up at 14 seconds, but it’s barely registering and completely buried by the onshore junk. The energy is weak, 155 to 219. The weekend of the 8th and 9th picks up a bit of height, 6 ft to 6 ft, but the wind cranks up to 22 mph, making it a total washout. The energy climbs to 569, but it’s a messy, lumpy 7-second storm swell.
The second week doesn’t bring any relief. From Monday the 10th to Wednesday the 13th, we’ve got a solid mix of ENE short-period slop and some long-period S and SSW groundswell. The energy jumps up to 747 on the 12th, and the period hits 18 seconds, which is massive. But here’s the kicker: the wind is still a solid 19 mph to 22 mph cross-shore, turning what could be a beautiful, long-period energy into a lumpy, unrideable mess. That’s a real shame, as the potential is there, but the conditions won't let us enjoy it.
Then things get a bit wild. Around the 14th and 15th, the swell bumps up to 8 ft to 8 ft from the ENE, with a short 8-second period. The combined energy gets strong, hitting 1101 on the 14th. But the wind is a strong 25 mph, creating a messy cross-chop. That’s too big and blown out for paddling. For a beach break like Sandy Beach, that setup is far more interesting for kite surfers than us. It’s a no-go zone for a paddle board.
The last few days of the forecast, the 16th to the 18th, see the swell drop back to 3 ft to 7 ft, but the wind is still howling at 25 mph, and the energy drops to 423. It’s the same story: lumpy, blown-out, and not worth the paddle out.
So, the honest truth is, there are no standouts in this 16-day window. The entire period is a write-off. The wind is the enemy, and the swell direction is never right. It’s a blank run, and for this area, that’s not unusual. Forecasts can change, but for now, I’d leave the boards at home and maybe go for a swim.
- Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Mon afternoon, min 25°C on Mon afternoon). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Warm (max 25°C on Thu afternoon, min 25°C on Thu afternoon). Mainly strong winds. | |||||||||||||||||||
Mon 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | SSW 14 | ENE 8 | SSE 11 | SSW 14 | SSW 14 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 |
Wave Graph | ||||||||||||||||||||
294 | 623 | 452 | 415 | 473 | 269 | 203 | 186 | 81 | 142 | 40 | 77 | 73 | 260 | 277 | 225 | 297 | 314 | 373 | 322 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross |
High Tide | 5:53PM0.45m | 7:57AM0.48m | 6:26PM0.37m | 9:10AM0.55m | 7:10PM0.29m | 10:22AM0.61m | 8:39PM0.22m | 11:25AM0.67m | 10:36PM0.19m | 12:21PM0.73m | 00:00AM0.20m | 1:10PM0.77m | 1:01AM0.23m | |||||||
Low Tide | 00:59AM0.04m | 2:07PM0.27m | 1:37AM0.03m | 4:33PM0.27m | 2:24AM0.02m | 6:43PM0.21m | 3:25AM0.02m | 7:38PM0.16m | 4:32AM0.00m | 8:16PM0.11m | 5:38AM-0.02m | 8:50PM0.08m | ||||||||
— | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | |
7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — |
Temp °C | 26 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 24 | 28 | 27 | 27 | 25 | 24 | 25 | 25 | 24 | 24 | 23 | 23 | 25 | 23 | 22 | 22 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | E 12 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | SSW 15 | SW 14 | ENE 8 | SSW 14 | ENE 8 | ENE 7 | NE 7 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 17 | SSW 12 | S 16 |
108 | 623 | 452 | 415 | 358 | 269 | 88 | 54 | 59 | 80 | 32 | 21 | 24 | 107 | 113 | 101 | 99 | 159 | 86 | 131 | |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSE 12 | SSW 14 | SSE 11 | SW 14 | SSW 14 | SSW 14 | SSW 19 | SW 18 | SSW 18 | SW 18 | SSW 13 | SW 16 | SSW 12 |
50 | 56 | 46 | 51 | 47 | 38 | 39 | 49 | 81 | 24 | 102 | 77 | 73 | 148 | 164 | 124 | 150 | 96 | 66 | 57 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | SSE 9 | W 13 | SW 16 | SW 15 | SSE 13 | SSE 12 | SSW 10 | SSE 12 | SSW 10 | SSE 11 | S 11 | SW 20 | S 11 | SSE 10 | SSE 10 | W 12 | W 11 | SSW 18 | SW 16 |
41 | 8 | 30 | 68 | 57 | 56 | 49 | 20 | 26 | 9 | 40 | 21 | 99 | 21 | 18 | 19 | 25 | 21 | 102 | 64 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | — | — | — | ENE 10 | — | ENE 9 | ENE 9 | ENE 6 | ENE 8 | ENE 5 | ENE 5 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 |
294 | — | — | — | 473 | — | 203 | 186 | 53 | 142 | 27 | 36 | 42 | 260 | 277 | 225 | 297 | 314 | 373 | 322 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 55 | 16 | 5 | 5 | 16 | 16 | 16 | 16 | 16 | 47 | 16 | 16 | 47 | 47 | 55 | 55 | 47 | 48 | 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.











