Surf Forecasts:
Sandy Beach surf forecast from 15 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 2AM (local time) - 6ft (1.8m), 8s period, ENE swell with 395 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 1.8m 8s and forecast to arrive on Sunday (Jul 19) at 2AM. 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 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 19th Jul) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s talk about what’s on the menu at Sandy Beach.
Right off the bat, I gotta be straight with you – the next week and a half is looking pretty grim. We’ve got a long spell of messy, choppy, cross-shore wind and small, weak swell. There’s a gap of about 10 days here where the surf is just not worth your time. The winds are mostly cross or cross-on from the ENE, and the wave heights are all over the place but the quality is just poor. The water temp is sitting at 79°, which is about normal for this time of year.
The one glimmer of hope doesn’t show up until Saturday, July 25th. Even then, it’s only a marginal call. The swell starts to build a bit, coming from the E at 3ft, with a period of 15 seconds. That’s a long period groundswell, which means better shaped waves, but it’s prone to closing out on a beach break like Sandy Beach. The energy is pumping at 1256 (moderate to strong wave energy), but the wind is still cross from the NE at 16 mph, so it’s gonna be lumpy. It’s a start, but nothing to write home about.
July 26th (Sunday) is a little better on paper. The swell holds at 4ft from the E, still with that lovely 16-second period, and the energy is a big 1868. But again, the wind is a fresh 19 mph cross-shore, so it’s going to be a messy, bumpy ride. For a beach break, that long period swell is going to be hard to handle, and the chop will make it a fight.
The real standout, if you’re desperate, is Monday July 27th afternoon. The swell jumps to 7ft from the ENE. That’s getting into expert territory for sure. The period drops to 7 seconds though, which is short and weak, so it’s a windswell. The energy is still high at 1094, but with cross-shore winds at 22 mph, it’s going to be a complete washing machine. Honestly, this setup looks more interesting for kite surfing than paddle surfing, especially with that strong, steady cross-breeze.
The rest of the forecast into the end of the month is more of the same: small, messy, and cross-shore. The swell sticks around 5ft to 6ft from the ENE with short periods, and the wind never really lets up. It’s a tough stretch. You’ll be waiting a long time for a clean, glassy day here.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Wed morning, min 24°C on Wed morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Sat morning, min 24°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
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) | NE 7 | ENE 7 | SSW 16 | SSW 16 | SSW 17 | ENE 6 | ENE 6 | SSW 16 | SSW 14 | SSW 13 | SSW 14 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 16 | S 15 | S 14 | S 14 | S 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 118 | 64 | 314 | 175 | 195 | 145 | 160 | 196 | 147 | 141 | 210 | 395 | 295 | 284 | 201 | 147 | 321 | 271 | 329 | 302 | 277 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 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 | 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 | 3:12AM0.05m | |||||||
 | |  |  | | | | |  | | | | | | | | | |  | |  | |
 | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:14 | — | — | 7:14 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 2 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 26 | 25 | 25 | 25 | 23 | 24 | 23 | 23 | 23 | 24 | 24 | 23 | 22 | 23 | 22 | 24 | 23 | 23 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | NE 7 | ENE 7 | SSW 16 | W 14 | W 14 | SW 14 | W 14 | SSW 16 | SSW 14 | ESE 6 | SSW 14 | S 12 | S 12 | S 13 | SSW 12 | S 14 | S 16 | NE 7 | S 14 | S 14 | S 13 |
| kJ | 118 | 64 | 314 | 203 | 203 | 211 | 144 | 196 | 147 | 28 | 210 | 108 | 72 | 85 | 44 | 142 | 321 | 91 | 329 | 302 | 277 |
Swell 2 Height (m) Direction Period (s) | W 15 | W 15 | W 15 | SSW 16 | SSW 13 | W 14 | SW 16 | W 14 | NNE 7 | SSW 13 | NNE 7 | W 12 | S 19 | S 18 | S 18 | S 16 | SW 18 | S 15 | E 13 | E 13 | E 12 |
| kJ | 221 | 215 | 212 | 175 | 113 | 148 | 125 | 98 | 30 | 141 | 27 | 28 | 66 | 106 | 97 | 135 | 81 | 271 | 123 | 119 | 107 |
Swell 3 Height (m) Direction Period (s) | SW 13 | SW 14 | NNE 8 | SSW 13 | SSW 17 | SSW 18 | SSW 12 | SSW 12 | W 13 | NNE 7 | WNW 13 | SSW 14 | W 12 | W 12 | SW 19 | NNE 8 | E 17 | E 7 | SW 17 | SW 16 | SW 15 |
| kJ | 162 | 206 | 47 | 113 | 195 | 60 | 55 | 55 | 90 | 18 | 56 | 19 | 25 | 25 | 57 | 22 | 49 | 39 | 72 | 68 | 60 |
Wind waves Height (m) Direction Period (s) | — | — | ENE 7 | NE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | NE 7 | E 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | ENE 7 | ENE 7 | ENE 7 |
| kJ | — | — | 68 | 109 | 64 | 145 | 160 | 150 | 99 | 63 | 126 | 395 | 295 | 284 | 201 | 147 | 161 | — | 162 | 168 | 132 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 47 | 16 | 48 | 47 | 47 | 47 | 48 | 17 | 47 | 47 | 50 | 47 | 47 | 16 | 16 | 47 | 16 | 20 | 47 | 16 |
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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