Surf Forecasts:
Sandy Beach surf forecast from 4 Jul 2026:
- Most powerful swell: Monday 6 Jul, 5AM (local time) - 7.5ft (2.3m), 7s period, ENE swell with 560 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 2.3m 7s and forecast to arrive on Monday (Jul 06) at 5AM. 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 15s period and expected on Saturday (Jul 04) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Mon 6th Jul) | 7.5ft (2.3m) 7s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
Updates in hr min s Forecast update imminent
Hey folks, Rusty here, talking about Sandy Beach over the next 16 days. I’m not gonna sugarcoat it—this whole period looks rough. The wind’s stuck out of the ENE, blowing cross-shore at 20-25 mph most days, and that’s just wrecking any chance of clean surf. The forecast reads “poor surf conditions” the whole way through, and I don’t see a single window where it turns on. No standout days here.
Let’s break it down. Starting Saturday, July 4th, clear skies but a 19 mph cross-wind from the ENE. Swell is 6 ft from the ENE, short 8-second period, combined energy around 899—moderate, but that wind’s making a mess. Saturday afternoon drops to 2 ft from the south with a long 20-second period, energy 872, but the wind picks up to 22 mph and it’s lumpy chop. No good.
Sunday the 5th, same: 25 mph cross-winds, 3 ft swell from the SSW at 18 seconds, energy around 900. Total chop. Monday the 6th through Thursday the 9th, the swell bumps up to 7-8 ft from the ENE, but with a short 7-second period—weak, crumbly under 22-25 mph cross-winds. Energy readings in the 400-900 range, but quality is zero.
By Friday the 10th, energy dips to 299—weak. Still cross-winds. The pattern holds all the way to Saturday, July 18th, with swell between 2 ft and 6 ft, periods either short (7-8 seconds) or long (15-18 seconds), but that constant ENE cross-wind never lets up. Water temp anomaly isn’t given, so I can’t say if it’s warm or cold for July.
There’s no day to recommend. Sandy Beach (Sandy’s) is a fairly consistent spot exposed to ESE swell, but the wind direction is just awful for the entire 16 days. This is a total blank run—sometimes the forecast just locks you into a bad wind pattern. With combined swell energy never topping 1000 (moderate at best, often weak), and the wind never blowing offshore or going light, it’s a bust. For paddle surfing, leave the board at home. If you’ve got a kite, those 22-25 mph cross-winds might be fun at a beach setup, but for a surfboard, forget it.
Rusty, out.
Short Range ForecastMostly dry. Warm (max 25°C on Sat afternoon, min 24°C on Fri night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu morning, min 24°C on Mon night). Mainly strong winds. | ||||||||||||||||||||
Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Fri 10 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ENE 8 | ENE 8 | S 20 | SSW 19 | SSW 18 | SSW 18 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 345 | 336 | 377 | 486 | 418 | 408 | 475 | 456 | 551 | 428 | 560 | 411 | 526 | 363 | 310 | 312 | 325 | 302 | 228 | 183 | 228 |
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-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross |
High Tide | 6:20AM0.24m | 6:04PM0.58m | 7:31AM0.29m | 6:38PM0.51m | 8:45AM0.37m | 7:16PM0.44m | 9:53AM0.45m | 8:03PM0.36m | 10:53AM0.55m | 9:06PM0.28m | 11:46AM0.64m | 10:28PM0.22m | 12:36PM0.72m | ||||||||
Low Tide | 1:11AM0.05m | 11:08AM0.12m | 1:41AM0.04m | 12:14PM0.19m | 2:11AM0.02m | 1:48PM0.25m | 2:44AM0.01m | 3:55PM0.27m | 3:22AM-0.01m | 6:02PM0.24m | 4:05AM-0.03m | 7:30PM0.18m | 4:54AM-0.05m | ||||||||
 |  | |  | | | | | | | | | | |  | | | | | | | |
 | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — |
 | 7:15 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 24 | 25 | 25 |
Feels °C | 21 | 21 | 22 | 21 | 21 | 20 | 20 | 20 | 21 | 20 | 19 | 20 | 20 | 20 | 20 | 21 | 22 | 22 | 21 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | S 20 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | S 13 | S 12 | S 12 | S 12 | S 12 | W 14 |
| kJ | 146 | 212 | 377 | 486 | 418 | 408 | 371 | 337 | 402 | 284 | 280 | 273 | 250 | 189 | 187 | 125 | 112 | 112 | 75 | 71 | 65 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | S 21 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | SE 8 | SSE 8 | SSE 8 | SSE 8 | W 15 | W 15 | W 14 | W 13 | W 14 | SSW 11 |
| kJ | 59 | 326 | 162 | 69 | 138 | 79 | 34 | 8 | 8 | 8 | 7 | 3 | 7 | 7 | 13 | 17 | 17 | 14 | 14 | 64 | 42 |
Swell 3 Height (m) Direction Period (s) | SSW 22 | SSW 16 | SSW 11 | SW 15 | SSE 11 | SSE 11 | SSE 10 | SSW 13 | W 10 | SW 9 | SE 10 | S 10 | — | W 18 | S 18 | SE 8 | SSE 8 | SSE 8 | SSE 8 | SSW 21 | SW 21 |
| kJ | 164 | 25 | 23 | 54 | 11 | 11 | 9 | 17 | 2 | 3 | 4 | 2 | — | 6 | 6 | 3 | 6 | 6 | 6 | 45 | 110 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 345 | 336 | 310 | 279 | 362 | 405 | 475 | 456 | 551 | 428 | 560 | 411 | 526 | 363 | 310 | 312 | 325 | 302 | 228 | 183 | 228 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 48 | 55 | 47 | 55 | 61 | 48 | 59 | 111 | 110 | 55 | 57 | 47 | 55 | 55 | 47 | 48 | 61 | 55 | 55 | 110 |
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.
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