
Surf Forecasts:
Sandy Beach surf forecast from 14 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 8AM (local time) - 6ft (1.8m), 8s period, ENE swell with 416 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 8AM. 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 | 8AM (Sun 19th Jul) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be honest, this is a tough one. We’re looking at a solid 16-day window but the first two weeks are pretty much a write-off for Sandy Beach. The setup is a beach and reef, exposed to the open ocean, but the wind is relentless and the sea state is just ugly. You’ll be battling a constant cross-shore wind that’s whipping up a lumpy cross-chop. The swell energy is weak to moderate (values between 94 and 582) for the first week, and even when it pushes higher, the wind spoils it completely. The water is sitting around 79°F which is about average for the time of year, so that’s not the issue.
We start with a gap. From Tuesday the 14th right through to Sunday the 26th of July, every single forecast call is for "poor surf conditions." That’s nearly two weeks of nothing worth paddling for. The winds are cross or cross-on, mostly from the ENE or NE, and they’re stiff – 15 to 22 mph. There’s no offshore wind at all in this whole stretch. The swell is a mix of short period (7 seconds) and long period SSW groundswell, but it doesn’t matter because the surface is chopped to bits. The sets are there, but they’re messy.
Come Monday the 27th of July, we finally see a shift. The forecast upgrades from "poor" to just "marginal." The swell starts building from the E, with combined energy jumping to 1408, which is solid moderate energy. The swell height is 5 ft with a period of 15 seconds – that’s a proper long period groundswell. The problem? The wind is still cross-shore from the ENE at 12 mph. It’s still lumpy, but for the first time, it’s borderline surfable.
The real standout, if you can call it that, is Tuesday the 28th of July. The swell bumps up to 7 ft from the ENE, with a period of 14 seconds. That’s a lot of water moving, and the combined energy hits 2150, which is strong. This is expert territory. Anything over 8 ft is only for the pros, and this is just under that. The wind is still cross from the NE at 15-19 mph, so it’s not clean. For a beach and reef setup like Sandy Beach, a long period swell like this can break a bit straight and won’t be as forgiving. The water is still warm, but the crowds at Sandy Beach are "often" a factor, and with a bit of size, it’ll be busy.
Honestly, for the first two weeks, leave the board at home. The whole forecast is a lesson in why wind is king. The week of the 28th offers a few days of "marginal" surf, but the wind never lays down. If you’re desperate, the 28th morning has the best combo of size and slightly lower wind speed, but expectations should be low. This isn’t a paddle day; it’s more of a kite-surfing setup with that constant cross-breeze. Take it easy, and check back later.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Tue night. Warm (max 25°C on Tue afternoon, min 24°C on Tue morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Fri morning, min 24°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||
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 14 | SSW 14 | NE 8 | NE 7 | ENE 7 | SSW 16 | SSW 16 | SSW 17 | SSW 14 | ENE 7 | SSW 16 | SSW 14 | ENE 7 | SSW 14 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | S 16 | S 15 |
Wave Graph | |||||||||||||||||||||
239 | 232 | 110 | 132 | 94 | 314 | 175 | 195 | 183 | 149 | 196 | 170 | 204 | 160 | 247 | 375 | 277 | 250 | 172 | 321 | 271 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross-on | 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 | ||||||||
Low Tide | 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 | 11:55AM0.16m | 1:26AM0.03m | 1:10PM0.23m | 1:58AM0.03m | 2:57PM0.28m | 2:33AM0.04m | |||||||
5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:14 | — | |
mm | — | — | 3 | — | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 24 | 25 | 25 | 24 |
Feels °C | 23 | 24 | 24 | 25 | 25 | 24 | 26 | 23 | 24 | 23 | 22 | 23 | 23 | 23 | 24 | 21 | 23 | 22 | 24 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | SSW 14 | NE 8 | NE 7 | ENE 7 | SSW 16 | NE 7 | W 14 | SSW 14 | W 14 | SSW 16 | SSW 14 | SSW 13 | SSW 14 | S 14 | S 12 | S 13 | S 12 | S 14 | S 16 | S 15 |
88 | 232 | 110 | 132 | 94 | 314 | 106 | 203 | 183 | 144 | 196 | 158 | 141 | 160 | 144 | 72 | 89 | 67 | 136 | 321 | 271 | |
Swell 2 Height (m) Direction Period (s) | E 8 | W 16 | W 15 | W 15 | W 15 | W 15 | W 14 | SSW 17 | W 14 | SW 16 | W 14 | W 13 | WNW 13 | NNE 8 | NNE 8 | S 19 | S 18 | S 18 | S 16 | SW 18 | SSW 11 |
95 | 188 | 227 | 221 | 215 | 212 | 203 | 195 | 148 | 125 | 98 | 90 | 57 | 21 | 24 | 66 | 106 | 97 | 135 | 81 | 38 | |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SW 19 | SW 13 | SW 13 | SW 14 | NNE 8 | SSW 16 | SSW 13 | SSE 7 | SSW 12 | SSW 12 | SW 16 | SW 15 | WNW 13 | W 12 | W 12 | W 12 | SW 19 | SW 18 | NNE 8 | SW 16 |
239 | 94 | 170 | 162 | 206 | 54 | 175 | 113 | 10 | 55 | 55 | 38 | 55 | 56 | 28 | 25 | 25 | 92 | 83 | 6 | 69 | |
Wind waves Height (m) Direction Period (s) | — | NE 8 | — | SE 4 | — | ENE 7 | SE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | ENE 6 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 |
— | 186 | — | 7 | — | 66 | 10 | 72 | 175 | 149 | 154 | 170 | 204 | 125 | 247 | 375 | 277 | 250 | 172 | 139 | 124 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 16 | 29 | 42 | 42 | 29 | 42 | 48 | 47 | 47 | 55 | 47 | 55 | 48 | 47 | 48 | 48 | 16 | 47 | 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.










