
Surf Forecasts:
Sandy Beach surf forecast from 23 Jul 2026:
- Best quality surf: Thursday 30 Jul, 2AM (local time) - 4.5ft (1.4m), 10s period, ENE swell with cross-offshore winds.
- Most powerful swell: Tuesday 28 Jul, 11PM (local time) - 7ft (2.1m), 12s period, ENE swell with 1,290 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 2AM (local time) - 4.5ft (1.4m), 10s 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 Thursday (Jul 30) at 2AM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.8m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sandy Beach in the next 16 days are 2.1m 12s and forecast to arrive on Tuesday (Jul 28) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 30th Jul) | 4.5ft (1.4m) 10s |
| Best Surf | 2AM (Thu 30th Jul) | 4.5ft (1.4m) 10s |
| Most Powerful | 11PM (Tue 28th Jul) | 7ft (2.1m) 12s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let’s get into it.
Gonna be a tough stretch at Sandy Beach. The whole 16-day window is looking pretty grim. The problem is that persistent stiff ENE wind, hammering away at the beach-and-reef setup. It’s a real shame, because there’s plenty of water moving around, but the wind is just ruining everything.
The week kicks off on Thursday the 23rd with a strong cross-onshore breeze at 25 mph, and the water is a messy 2 ft of SSW swell. The combined energy is high (1006), but it’s just a blown-out washing machine. That same pattern sticks around through Friday the 24th, with swell jumping to 7 ft from the ENE (1011 energy), but it’s still a strong cross-shore mess. At that size, anything over 5 ft is already a handful for beginners, but with this wind, it’s a battle for anyone.
The weekend doesn’t offer any relief. Saturday the 25th has a fresh cross-shore wind and lumpy conditions. By Sunday the 26th, the swell drops back to 3 ft, but the wind is still strong and cross-shore. The energy is still pumping (1177), but it’s all for nothing. Into Monday the 27th and Tuesday the 28th, we see 4 ft to 7 ft of E/ENE swell, with moderate to fresh cross-shore winds. The energy gets up to 1354 on Tuesday morning, but the wave comment says “marginal” at best, and the wind state is all lumpy cross-chop. This is not surfing; this is a wrestling match.
The only glimmer in the whole period comes on Wednesday the 30th, around Thursday morning. The wind finally swings to a light onshore breeze from the SE at 6 mph, with a 4 ft ENE swell (436 energy). The conditions are described as “clean,” but it’s still a marginal call. The swell is short-period (9 seconds), so it’s not going to be anything special, but it’s the closest we get to a surfable wave. Even then, it’s for intermediate surfers at best.
After that, it’s back to the same story. Strong cross-shore winds, messy chop, and poor conditions right through to the 7th of August. The swell energy stays moderate to strong (over 1000 for a few days), but it’s all wasted. The wind never lets up enough to make it worthwhile.
Honestly, this setup looks more interesting for kite surfing than paddle surfing. The water temperature is about average for the time of year, but that’s the only thing that’s normal. There’s just no real standout here. The only day to even consider is that Thursday morning, July 30th, but keep your expectations low. It’s a long window with no real surf.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri morning. Warm (max 25°C on Wed night, min 25°C on Wed night). Mainly strong winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 26°C on Tue afternoon, min 24°C on Sat night). Mainly fresh winds. | ||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||
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) | SSW 22 | ENE 7 | ENE 7 | SSW 18 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | SSW 18 | SSW 18 | ENE 8 | SSW 16 | E 14 | E 14 | E 13 | E 13 | ENE 13 | ENE 12 | E 12 |
Wave Graph | |||||||||||||||||||
363 | 412 | 395 | 464 | 446 | 456 | 526 | 430 | 578 | 547 | 469 | 452 | 485 | 613 | 792 | 852 | 1175 | 1114 | 940 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 8:50PM0.23m | 11:59AM0.59m | 10:38PM0.19m | 12:42PM0.62m | 11:56PM0.19m | 1:20PM0.64m | 00:50AM0.19m | 1:55PM0.66m | 1:32AM0.20m | 2:28PM0.68m | 2:09AM0.22m | 2:58PM0.69m | 2:46AM0.24m | ||||||
Low Tide | 3:57AM0.05m | 8:24PM0.18m | 8:50PM0.15m | 5:38AM0.03m | 9:14PM0.12m | 6:24AM0.02m | 9:38PM0.11m | 7:06AM0.01m | 10:01PM0.09m | 7:44AM-0.00m | 10:25PM0.09m | ||||||||
— | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
7:13 | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | |
mm | — | — | — | — | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 22 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | S 13 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | E 14 | E 14 | E 14 | E 13 | E 13 | SSW 14 | SSW 14 | E 12 |
157 | 412 | 395 | 464 | 329 | 340 | 232 | 391 | 578 | 547 | 469 | 368 | 485 | 613 | 792 | 852 | 143 | 143 | 940 | |
Swell 2 Height (m) Direction Period (s) | SSW 22 | S 12 | S 11 | S 11 | S 12 | S 12 | S 20 | SSW 16 | S 11 | E 15 | E 14 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSE 10 | SSE 10 | S 14 |
363 | 99 | 125 | 55 | 143 | 102 | 296 | 223 | 39 | 72 | 260 | 452 | 333 | 228 | 222 | 213 | 18 | 9 | 184 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | SSW 16 | SW 16 | S 13 | SSW 15 | S 21 | S 12 | S 11 | E 13 | E 12 | S 11 | S 11 | S 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | S 9 | SW 21 |
150 | 100 | 127 | 85 | 93 | 231 | 100 | 64 | 54 | 47 | 20 | 20 | 8 | 11 | 22 | 20 | 18 | 2 | 18 | |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | NE 7 | NE 10 | ENE 13 | ENE 12 | NNE 7 |
263 | 395 | 350 | 388 | 446 | 456 | 526 | 430 | 436 | 425 | 389 | 337 | 352 | 289 | 165 | 216 | 1175 | 1114 | 85 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 47 | 55 | 110 | 55 | 57 | 110 | 55 | 47 | 110 | 47 | 49 | 50 | 47 | 47 | 110 | 19 | 47 | 47 | 14 |
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.










