
Surf Forecasts:
Sandy Beach surf forecast from 11 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 11AM (local time) - 7ft (2.1m), 7s period, ENE swell with 456 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 2.1m 7s and forecast to arrive on Sunday (Jul 12) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 17s period and expected on Sunday (Jul 12) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Sun 12th Jul) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
Alright folks, Rusty here. Let’s be straight with you – this is a tough one for Sandy Beach. Over the whole 16-day window, the surf just isn’t cooperating. The wind is a constant problem, and it’s messing up what little swell we get.
Right from the start, on Saturday 11 July, we’ve got a 7ft swell from the ENE, but the wind is a strong 25 mph cross-shore. That’s a recipe for messy, cross-chop junk. The water temp is sitting at 79°, which is pretty much bang on average for the time of year, so no surprises there. The combined energy is moderate (682), but with that wind and short period (7 seconds), it’s poor surf, plain and simple.
This pattern doesn’t let up. Sunday 12 July, Monday 13 July, Tuesday 14 July – it’s all the same story. The swell drops a bit, but the wind stays strong and cross-shore, with energy readings bouncing between 200 and 600. The waves are small, short-period, and lumpy. Not a single session looks good.
We get a bit of a breather on Wednesday 15 July with a gentler breeze, but the swell is tiny – just 3ft to 3ft from the ENE – and the energy is weak (68 to 105). The wind is cross-onshore, so it’s still choppy.
Then, on Thursday 16 July, we see a weird shift. The swell drops to 2ft, but the period jumps to 16 seconds from the SSW with a moderate energy reading of 289. That’s a long-period groundswell pushing through, but it’s tiny. A long-period, small wave like that at a beach break like Sandy Beach is going to be pretty straight and unsurfable. The cross-shore wind is still 19 mph, making it a lumpy mess.
Friday 17 July brings a bit more ENE swell, 4ft, but with a short 6-second period and strong cross-onshore wind, it’s just a messy, blown-out 1ft wave. The energy is weak (121). No go.
The rest of the second week doesn’t get any better. From Saturday 18 July all the way through to Saturday 25 July, it’s a frustrating mix of tiny, long-period S and SSW swells, or short-period ENE windswell, all hampered by fresh to strong cross-shore winds. The combined energy (322 to 672) is moderate, but the quality is consistently rated as "poor surf conditions."
The only slight glimmer is on Saturday 25 July and Sunday 26 July, when the swell finally bumps up to 5ft to 6ft from the ENE, with a period of 6-7 seconds. But the wind is still a fresh 16-22 mph cross-shore. The wave energy is moderate (426 to 470), but it’s gonna be a lumpy, cross-chop mess. A beach setup with this much wind and short-period swell is honestly looking more interesting for kite surfing than paddle surfing.
Honestly, there’s not a single standout day in this 16-day window. It’s a long, blank run for Sandy Beach. The forecast can always change, but right now, it’s a hard pass. Hang up the boards and wait for a better forecast.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Sat morning, min 24°C on Sat morning). Mainly strong winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Wed morning. Warm (max 25°C on Tue afternoon, min 24°C on Tue morning). Winds increasing (light winds from the E on Wed night, strong winds from the ENE by Thu night). | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
AM | 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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 8 | NE 8 | NE 8 | ENE 7 | ENE 7 | SSW 16 | SSW 16 | SSW 17 | SSW 14 | ENE 6 | SSW 16 | SSW 14 |
Wave Graph | |||||||||||||||||||||
417 | 316 | 339 | 456 | 419 | 393 | 373 | 339 | 237 | 114 | 210 | 110 | 105 | 68 | 314 | 175 | 195 | 183 | 100 | 196 | 147 | |
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-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross | cross-on |
High Tide | 1:24PM0.77m | 00:55AM0.18m | 2:10PM0.81m | 1:53AM0.19m | 2:55PM0.82m | 2:47AM0.21m | 3:38PM0.81m | 3:40AM0.23m | 4:19PM0.78m | 4:35AM0.27m | 4:58PM0.72m | 5:33AM0.31m | 5:35PM0.64m | ||||||||
Low Tide | 9:12PM0.08m | 6:39AM-0.08m | 9:53PM0.05m | 7:31AM-0.09m | 10:32PM0.03m | 8:22AM-0.08m | 11:09PM0.02m | 9:12AM-0.05m | 11:45PM0.02m | 10:02AM0.01m | 00:20AM0.02m | 10:55AM0.08m | 00:53AM0.03m | ||||||||
5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 22 | 22 | 22 | 22 | 21 | 21 | 20 | 20 | 21 | 23 | 23 | 24 | 26 | 25 | 24 | 24 | 23 | 23 | 22 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 15 | SSW 15 | SW 14 | NNE 7 | SW 14 | NE 8 | ENE 7 | ENE 7 | NE 7 | W 14 | W 14 | ENE 6 | W 14 | SSW 16 | SSW 14 |
221 | 316 | 309 | 376 | 367 | 353 | 287 | 272 | 208 | 114 | 186 | 110 | 105 | 68 | 136 | 203 | 200 | 98 | 144 | 196 | 147 | |
Swell 2 Height (m) Direction Period (s) | W 14 | W 13 | W 13 | W 12 | SSE 12 | W 12 | SSE 12 | W 18 | W 18 | E 8 | W 16 | E 7 | W 15 | W 15 | SSW 16 | NNE 8 | SSW 13 | SSW 14 | SW 16 | W 14 | NNE 7 |
63 | 54 | 54 | 27 | 28 | 26 | 27 | 97 | 152 | 94 | 188 | 53 | 221 | 215 | 314 | 50 | 113 | 183 | 125 | 98 | 30 | |
Swell 3 Height (m) Direction Period (s) | S 12 | S 12 | S 11 | S 13 | W 12 | SSE 12 | W 12 | SSE 11 | SW 18 | SW 14 | SW 19 | W 15 | SW 13 | SW 14 | W 15 | SSW 16 | SSW 17 | W 14 | NNE 7 | SSW 12 | W 13 |
44 | 25 | 23 | 29 | 26 | 28 | 26 | 25 | 82 | 191 | 94 | 227 | 164 | 206 | 212 | 175 | 195 | 148 | 21 | 55 | 90 | |
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 | — | NE 8 | — | — | — | — | ENE 6 | E 6 | E 6 | ENE 6 | ENE 6 | ENE 6 |
417 | 316 | 339 | 456 | 419 | 393 | 373 | 339 | 237 | — | 210 | — | — | — | — | 64 | 97 | 92 | 100 | 150 | 90 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 55 | 55 | 55 | 55 | 57 | 47 | 48 | 50 | 16 | 45 | 47 | 29 | 5 | 5 | 5 | 47 | 48 | 55 | 55 | 55 | 48 |
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.










