
Surf Forecasts:
Sandy Beach surf forecast from 24 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 2AM (local time) - 10ft (3.0m), 12s period, ENE swell with cross-shore winds.
- Most powerful swell: Wednesday 29 Jul, 8AM (local time) - 11ft (3.5m), 11s period, ENE swell with 3,131 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 2AM (local time) - 10ft (3.0m), 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 Wednesday (Jul 29) at 2AM. The primary swell is predicted to be 3.0m and 12s period with a secondary swell of 0.6m and 14s. Another secondary swell of 0.2m and 10s is also forecast. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Sandy Beach in the next 16 days are 3.5m 11s and forecast to arrive on Wednesday (Jul 29) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 18s period and expected on Thursday (Jul 30) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 29th Jul) | 10ft (3.0m) 12s |
| Best Surf | 2AM (Wed 29th Jul) | 10ft (3.0m) 12s |
| Most Powerful | 8AM (Wed 29th Jul) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a good hard look at what’s coming up for Sandy Beach.
The story here is a tough one. We’re staring down a long, ugly stretch of onshore and cross-shore winds that are going to wreck just about everything. The opening days are a write-off – Friday the 24th through to the end of that first week are all about strong, messy, cross-shore winds whipping up a lumpy cross-chop. The swell is pretty weak to moderate at first, with combined energy readings around 1064 to 1101, and it’s coming from the ENE with a short, choppy period of 7 to 8 seconds. Don’t even bother. The water temp is about average for this time of year, so at least that’s not weird.
We finally get a little glimmer of hope on Tuesday the 29th of July. The morning shows a solid 12 ft of swell from the ENE, with a period of 11 seconds and a combined energy reading of 2727 – that’s a lot of power. The wind is a moderate cross-shore, and the forecast says the wind and tide are favorable, but here’s the kicker: that 12 ft is just too big for this break. This is a beach and reef setup, and that kind of size is for experts only. It’s going to be a washing machine unless you’re really, really good. The afternoon turns to onshore and gets messy again.
After that blast, it’s back to the grind. From the 30th of July all the way through the 8th of August, we’re stuck in a pattern of cross-onshore and cross-shore winds, with the swell dropping back to 3 ft to 6 ft and periods of 10 to 16 seconds. The combined energy drops right off, mostly under 1000. The 10th of August shows a bit of energy from the NE at 5 ft, but the wind is still cross-onshore, so it’s only marginal at best. The long-period groundswells that show up on the 2nd and 3rd of August (16 seconds) are technically classy, but with the wind howling cross-shore, they’ll be a lumpy, choppy mess.
Forget the first week. The only real standout in the whole 16-day window is that Tuesday the 29th of July morning session. It’s big, it’s powerful, and it’s the only time the wind is not totally ruining the works. But you’ve got to be an expert. The rest of the run is a long, frustrating gap of poor conditions. If you’re looking for a clean, fun wave, you’re not going to find it here.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 25°C on Thu night, min 24°C on Thu night). Mainly strong winds. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Wed morning. Warm (max 26°C on Tue afternoon, min 24°C on Sun night). Mainly fresh winds. | ||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
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 18 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | SSW 18 | ENE 8 | ENE 8 | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | E 12 | ENE 12 | ENE 11 | ENE 10 | ENE 8 |
Wave Graph | |||||||||||||||||||
464 | 499 | 428 | 512 | 392 | 572 | 547 | 469 | 407 | 472 | 515 | 485 | 946 | 957 | 1118 | 2281 | 2523 | 1170 | 541 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | on | cross-on |
High Tide | 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 | 3:28PM0.69m | 3:26AM0.26m | ||||||
Low Tide | 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 | 8:21AM0.00m | 10:49PM0.08m | |||||||
— | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
7:13 | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 5 | 4 | 7 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 |
Feels °C | 22 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 25 | 25 | 24 | 28 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | 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 | E 12 | E 12 | SSW 14 | ENE 11 | ENE 10 | SSW 14 |
464 | 329 | 340 | 232 | 391 | 572 | 547 | 469 | 407 | 472 | 515 | 485 | 946 | 957 | 1118 | 147 | 2523 | 1170 | 192 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 12 | S 12 | S 20 | SSW 16 | S 11 | E 15 | E 15 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | S 14 | SSE 10 | S 14 | S 14 | SSE 6 |
55 | 143 | 102 | 296 | 223 | 61 | 72 | 348 | 341 | 333 | 225 | 222 | 213 | 143 | 179 | 9 | 192 | 192 | 17 | |
Swell 3 Height (m) Direction Period (s) | S 13 | SSW 15 | S 21 | S 12 | S 11 | E 13 | E 12 | S 11 | S 11 | S 10 | S 10 | SSE 10 | NNE 10 | SSE 10 | — | SW 21 | S 10 | SSW 20 | SW 19 |
85 | 93 | 231 | 100 | 63 | 54 | 47 | 20 | 20 | 8 | 8 | 11 | 63 | 10 | — | 18 | 8 | 37 | 58 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | NE 7 | NE 7 | NNE 6 | NNE 7 | ENE 12 | SE 10 | SSE 5 | ENE 8 |
420 | 499 | 428 | 512 | 392 | 477 | 522 | 408 | 352 | 294 | 257 | 240 | 106 | 100 | 170 | 2281 | 4 | 27 | 541 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 49 | 61 | 61 | 48 | 55 | 63 | 48 | 48 | 50 | 47 | 47 | 110 | 16 | 45 | 141 | 19 | 5 | 50 | 5 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










