
Surf Forecasts:
Sandy Beach surf forecast from 16 Jul 2026:
- Most powerful swell: Thursday 23 Jul, 2AM (local time) - 4.5ft (1.3m), 12s period, ENE swell with 545 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 1.3m 12s and forecast to arrive on Thursday (Jul 23) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 14s period and expected on Thursday (Jul 16) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Thu 23rd Jul) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s talk about what’s on offer at Sandy Beach.
First up, the water temp is sitting at 79°F right now, which is bang on average for this time of year – nothing to complain about there.
Now, I’ll be straight with you: the next week and a half is a pretty grim run for any decent surf. From Thursday the 16th right through to Sunday the 26th of July, the forecast is a long stretch of poor conditions. The swell is constantly crossed up by a strong onshore or cross-shore ENE wind, blowing 15 to 25 mph most days, and the wave comment is consistently “poor surf conditions.” The combined energy doesn’t matter much when the wind is trashing it. There’s a tiny bit of long-period SSW groundswell sneaking in mid-week (2 ft at 16–17 seconds on the 16th, and 2 ft at 23 seconds on the 22nd), but with that ENE wind, it’s gonna be messy and choppy. Not worth paddling out for.
The only real standout – and I mean the only one worth circling on the calendar – is Tuesday the 28th of July. The swell pumps up to 10 ft from the ENE at 14 seconds, with the combined energy hitting a massive 3667 to 3593 (very strong energy). The wind turns light and variable, shifting to NE at 12 mph, described as “cross” – that’s actually decent for this spot. The wave comment says “wind and tide favorable, but the swell is predicted to be too big for this break.” And that’s the truth: 10 ft is expert territory, especially for a beach-and-reef setup like Sandy Beach. It’s a fairly consistent break, but at this size, only the experienced crew should be looking at it. Crowds are often around here, so with a rare big swell, expect it to be busy with the chargers.
The long period groundswell (14 seconds) will give good shape and energy, but at a beach break, it can make things a bit lined up and trickier. The direction is ENE, and the optimum swell is from ESE, so it’s not a perfect match, but when the swell is this size and the wind is light, you take what you get.
After that, the 29th is still big (11 ft, NE) but the wind starts to get messy again, and by the 30th it drops off fast. So really, the 28th is your window.
Otherwise, this is a long blank run. The forecast can change, but for now, mark that Tuesday the 28th and hope for the best.
Stay keen,
Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Thu morning, min 24°C on Thu morning). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 25°C on Sun afternoon, min 24°C on Sun morning). Mainly fresh winds. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||
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) | SSW 16 | SSW 17 | ENE 6 | ENE 7 | SSW 16 | SSW 14 | ENE 6 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 16 | S 15 | S 14 | S 14 | S 13 | E 13 | SSW 23 | ENE 12 |
Wave Graph | |||||||||||||||||||||
175 | 195 | 126 | 116 | 196 | 145 | 165 | 215 | 306 | 273 | 243 | 212 | 165 | 321 | 271 | 329 | 307 | 285 | 215 | 426 | 545 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 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 | 11:08AM0.55m | 8:50PM0.23m | ||||||||
Low Tide | 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 | 7:38PM0.23m | 3:57AM0.05m | |||||||
5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:14 | — | — | 7:14 | — | — | 7:13 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 1 | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 |
Feels °C | 24 | 24 | 24 | 24 | 23 | 24 | 24 | 22 | 23 | 21 | 23 | 23 | 22 | 23 | 23 | 24 | 23 | 24 | 24 | 23 | 21 |
Swell 1 Height (m) Direction Period (s) | NE 7 | W 14 | SW 14 | W 14 | SSW 16 | SSW 14 | SSW 13 | SSW 14 | S 12 | S 12 | SSW 13 | SSW 12 | S 14 | S 16 | S 15 | S 14 | S 14 | S 13 | E 7 | E 13 | ENE 12 |
96 | 203 | 211 | 144 | 196 | 145 | 141 | 160 | 112 | 72 | 95 | 44 | 142 | 321 | 271 | 329 | 307 | 277 | 72 | 219 | 545 | |
Swell 2 Height (m) Direction Period (s) | W 14 | SSW 13 | W 14 | SW 16 | W 14 | W 13 | WNW 13 | WNW 13 | W 12 | S 19 | S 18 | S 18 | S 16 | SW 18 | E 8 | E 15 | E 14 | E 13 | E 13 | SSW 23 | S 13 |
203 | 113 | 148 | 125 | 98 | 90 | 57 | 56 | 28 | 66 | 106 | 97 | 135 | 81 | 28 | 222 | 260 | 285 | 215 | 426 | 157 | |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SSW 17 | SSW 18 | SSW 12 | SSW 12 | NNE 7 | NNE 7 | SSE 9 | SSE 9 | W 12 | W 12 | NE 8 | SW 18 | E 18 | E 16 | E 7 | SW 16 | NE 7 | S 13 | S 13 | SSW 22 |
175 | 195 | 60 | 55 | 55 | 18 | 18 | 16 | 15 | 25 | 25 | 16 | 83 | 57 | 133 | 24 | 68 | 47 | 126 | 125 | 363 | |
Wind waves Height (m) Direction Period (s) | — | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 7 | NE 7 | ENE 7 | E 7 | — | ENE 7 | ENE 6 |
— | 58 | 126 | 116 | 120 | 103 | 165 | 215 | 306 | 273 | 243 | 212 | 165 | 173 | 79 | 93 | 127 | 61 | — | 88 | 121 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 48 | 16 | 16 | 47 | 48 | 47 | 47 | 55 | 47 | 47 | 47 | 16 | 16 | 16 | 16 | 47 | 47 | 16 | 47 | 47 | 16 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










