Surf Forecasts:
Sandy Beach surf forecast from 15 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 5AM (local time) - 6ft (1.9m), 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 1.9m 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) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – the outlook for Sandy Beach over the next 16 days is a tough one. We're looking at a long stretch of poor conditions with nothing but cross-shore winds and lumpy chop. The water temp is sitting at 79°, which is pretty much bang on average for this time of year, so no drama there.
The first real chance of anything we'd call surfable doesn't show up until Sunday the 26th of July, and even then it's only marginal. There's a solid wall of energy (1114) pushing through in the morning, but it's coming from the SSW around 3ft with a very long period of 18 seconds. That's a proper groundswell, but the problem is the wind is still a fresh cross-shore at 19 mph from the ENE, keeping it lumpy. This is more of a "check the tide and hope for a window" situation than a green light.
The rest of the block is a write-off right up to the 29th. The wind is relentless from the east and northeast, 15-22 mph, cross-shore or cross-on, and it's just constant chop. The swell heights bounce around from 2ft to 4ft for most of it, but it's all short-period junk with poor quality. The combined energy is moderate at best (414 to 857), but it's useless without clean conditions.
The only standout, if you can call it that, is the Sunday the 26th and Monday the 27th. On Monday the 27th afternoon, we see a swell from the east at 4ft with a period of 16 seconds, and energy hits 1143. The wind is still fresh cross-shore though, so it's still marginal. Don't get your hopes up for a classic session. This is a spot that's exposed and gets hit by a lot of wind, and for the next two weeks, it's just not cooperating.
For a beach and reef setup like this with that much cross-wind, if you're into kite surfing, it might actually look more interesting than paddling. For us surfers, it's a waiting game. Forecasts can change, but right now, there's nothing to get excited about until the very end of the run.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Wed morning. Warm (max 25°C on Tue afternoon, min 24°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Fri afternoon, min 24°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Tue 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 14 | NE 8 | NE 7 | ENE 7 | SSW 16 | ENE 6 | SSW 17 | SSW 14 | ENE 6 | SSW 16 | ENE 7 | S 13 | E 7 | E 7 | ENE 8 | ENE 8 | ENE 8 | S 16 | S 16 | S 15 | S 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 232 | 110 | 122 | 79 | 314 | 56 | 195 | 183 | 121 | 196 | 165 | 130 | 158 | 387 | 306 | 250 | 201 | 329 | 321 | 271 | 329 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross |
High Tide | 3:38PM0.81m | 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 | |||||||
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 | ||||||||
 |  |  | |  | | |  | | | | | | |  | | | | | | | |
 | — | — | 5:56 | — | — | 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 | — | — | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 24 | 25 | 25 | 25 | 25 |
Feels °C | 24 | 25 | 26 | 26 | 24 | 25 | 23 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 20 | 22 | 22 | 23 | 23 | 23 | 25 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 8 | NE 7 | ENE 7 | ENE 7 | ENE 6 | W 14 | SSW 14 | W 14 | SSW 16 | SSW 14 | S 13 | E 7 | SSW 14 | SSW 12 | S 13 | ENE 8 | S 16 | S 16 | ENE 7 | S 14 |
| kJ | 140 | 110 | 122 | 79 | 68 | 56 | 200 | 183 | 144 | 196 | 158 | 130 | 152 | 158 | 87 | 84 | 201 | 329 | 321 | 132 | 329 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | W 15 | W 15 | W 15 | SSW 16 | W 14 | SSW 17 | W 14 | SW 16 | W 14 | W 13 | NNE 7 | SSW 14 | W 12 | S 19 | S 18 | SSW 12 | NNE 8 | SW 18 | S 15 | SW 17 |
| kJ | 232 | 227 | 221 | 215 | 314 | 203 | 195 | 148 | 125 | 97 | 90 | 26 | 158 | 28 | 66 | 106 | 44 | 22 | 81 | 271 | 73 |
Swell 3 Height (m) Direction Period (s) | E 8 | SW 13 | SW 13 | SW 14 | W 15 | NNE 7 | SSW 13 | SSE 10 | SSW 12 | SSW 12 | SW 16 | WNW 13 | NNE 7 | S 20 | W 12 | W 12 | S 18 | SW 18 | SSE 6 | SW 16 | SSE 6 |
| kJ | 42 | 170 | 162 | 203 | 212 | 43 | 113 | 19 | 55 | 55 | 62 | 57 | 20 | 32 | 25 | 25 | 97 | 83 | 4 | 69 | 8 |
Wind waves Height (m) Direction Period (s) | — | E 7 | SE 5 | — | — | — | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 6 | — | E 7 | ENE 8 | ENE 8 | — | ENE 7 | ENE 7 | — | ENE 7 |
| kJ | — | 53 | 6 | — | — | — | 104 | 132 | 121 | 134 | 165 | 119 | — | 387 | 306 | 250 | — | 140 | 214 | — | 128 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 14 | 5 | 5 | 29 | 47 | 47 | 48 | 47 | 55 | 47 | 49 | 47 | 48 | 47 | 47 | 16 | 47 | 47 | 16 | 42 |
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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