
Surf Forecasts:
Sandy Beach surf forecast from 15 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 5AM (local time) - 5.5ft (1.7m), 8s period, ENE swell with 373 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 1.7m 8s and forecast to arrive on Sunday (Jul 19) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 15s period and expected on Wednesday (Jul 15) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Sun 19th Jul) | 5.5ft (1.7m) 8s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
G’day, Rusty here, looking at the 16-day outlook for Sandy Beach. Honestly, it’s a pretty grim run for the most part. The wind is constantly blowing from the east or north-east, and it’s nearly always a cross or cross-onshore breeze, which is gonna leave the place choppy and messy. There’s no standout day where everything lines up, so I’m calling it as it is: this is a long stretch of poor surf, and I wouldn’t be rushing to get the board wet.
The first few days are a write-off. Wednesday the 15th has a weak 3ft swell from the NE with a short period of 7 seconds, but the wind is a gentle cross-onshore, so it’s just choppy junk. Combined energy is only 104, so there’s next to nothing pushing through. Zero score, no recommendation. Thursday the 16th sees a weird long-period swell from the SSW at 16 seconds, but it’s only 2ft and the wind is a moderate to fresh cross-breeze, making it lumpy. The energy jumps to 284, but it’s still poor conditions. That pattern continues through Friday, Saturday, and Sunday—bigger swell on Sunday the 19th with a 6ft E swell at 8 seconds, but fresh cross-winds keep it ugly. The energy is moderate, around 497, but it’s not worth paddling out for.
The following week is more of the same. Monday the 20th through Thursday the 24th all have cross-winds from the ENE or NE, with swells mostly from the south at long periods, but the wave heights are gutless—2ft to 3ft. The energy does build, hitting 640 on Wednesday the 22nd and 787 on Thursday the 23rd, but with fresh cross-chop and those tiny waves, it’s just a messy combo. There’s a slight glimmer on Saturday the 25th morning, where the forecast is marked as “marginal” with a score of 1 out of 10. The swell is 3ft from the SSW at 19 seconds, and the wind is a moderate cross-breeze. Energy is high at 793, but the period is long, so expect long waits between sets. It’s still not a day to get excited about. Sunday the 26th morning is also marginal, with a 3ft SSW swell and moderate cross-wind, but again, it’s just limp.
The last few days, Monday the 27th to Thursday the 30th, are all poor. Monday morning has a 6ft ENE swell at 7 seconds, but it’s cross-onshore and lumpy, so that’s just a mess. Energy is strong at 903, but the wind kills it. After that, it fades into small, choppy leftovers.
Sandy Beach is a beach and reef setup, exposed to the swell, and it’s fairly consistent. The optimum swell direction is from the ESE, but we’re getting NE, E, and SSW swells, which don’t match. The water temp is about average for this time of year, nothing unusual. Crowds are “often” there, but honestly, with this outlook, it’ll be empty.
The best of a bad lot is Saturday the 25th morning, and even that’s marginal. That’s it—one window in over two weeks. If you’re desperate, you could gamble on that, but don’t hold your breath. For kite surfers, those fresh cross-winds and moderate energy might be more interesting, but for paddle surfing, it’s a long dry spell.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Tue night, min 24°C on Tue night). Winds increasing (light winds from the E on Tue night, fresh winds from the ENE by Fri afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Fri night, min 24°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||
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) | NE 7 | NE 7 | ENE 7 | SSW 16 | SSW 16 | SSW 17 | SSW 14 | ENE 6 | SSW 16 | ENE 7 | SSW 13 | SSW 14 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 16 | S 16 | S 15 | S 14 | S 14 |
Wave Graph | |||||||||||||||||||||
107 | 104 | 79 | 314 | 175 | 195 | 183 | 161 | 196 | 180 | 141 | 158 | 356 | 344 | 284 | 250 | 329 | 321 | 343 | 329 | 311 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 3:40AM0.23m | 4:19PM0.78m | 4:35AM0.27m | 4:58PM0.72m | 5:33AM0.31m | 5:35PM0.64m | 6:37AM0.35m | 6:10PM0.55m | 7:46AM0.40m | 6:42PM0.45m | 8:59AM0.45m | 7:13PM0.37m | 10:08AM0.51m | 7:46PM0.29m | |||||||
Low Tide | 11:09PM0.02m | 9:12AM-0.05m | 11:45PM0.02m | 10:02AM0.01m | 00:20AM0.02m | 10:55AM0.08m | 00:53AM0.03m | 11:55AM0.16m | 1:26AM0.03m | 1:10PM0.23m | 1:58AM0.03m | 2:57PM0.28m | 2:33AM0.04m | 5:25PM0.28m | |||||||
— | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | |
7:15 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:14 | — | — | 7:14 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 26 | 26 | 25 | 25 | 23 | 24 | 23 | 22 | 23 | 24 | 23 | 23 | 23 | 23 | 22 | 23 | 23 | 23 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | ENE 7 | SSW 16 | NE 7 | W 14 | SSW 14 | W 14 | SSW 16 | SSW 14 | SSW 13 | SSW 14 | S 12 | SSW 12 | S 13 | SSW 11 | S 16 | S 16 | S 15 | S 14 | S 14 |
107 | 104 | 79 | 314 | 109 | 200 | 183 | 144 | 196 | 158 | 141 | 158 | 112 | 87 | 84 | 42 | 329 | 321 | 343 | 329 | 311 | |
Swell 2 Height (m) Direction Period (s) | W 15 | W 15 | W 15 | W 15 | W 14 | SSW 13 | W 14 | SW 16 | W 14 | W 13 | NNE 7 | WNW 13 | W 12 | S 19 | S 18 | S 18 | SW 18 | SW 18 | E 7 | SW 17 | E 13 |
227 | 221 | 215 | 212 | 203 | 113 | 148 | 125 | 97 | 90 | 16 | 56 | 28 | 66 | 106 | 97 | 83 | 81 | 53 | 73 | 52 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 14 | NNE 8 | SSW 16 | SSW 17 | SSW 18 | SSW 12 | SSW 12 | SW 16 | WNW 13 | NNE 7 | S 20 | W 12 | W 12 | S 14 | W 11 | SSE 6 | SW 16 | E 13 | SW 16 |
170 | 162 | 203 | 67 | 175 | 195 | 60 | 55 | 55 | 62 | 57 | 15 | 32 | 25 | 25 | 32 | 10 | 4 | 69 | 31 | 68 | |
Wind waves Height (m) Direction Period (s) | — | — | — | ENE 7 | — | ENE 7 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 6 | E 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 7 | ENE 7 | ENE 7 |
— | — | — | 79 | — | 99 | 165 | 161 | 154 | 180 | 101 | 126 | 356 | 344 | 284 | 250 | 170 | 173 | 65 | 127 | 170 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 19 | 20 | 5 | 16 | 47 | 55 | 47 | 47 | 47 | 47 | 47 | 55 | 47 | 47 | 47 | 16 | 16 | 47 | 16 | 47 | 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.











