
Surf Forecasts:
Sandy Beach surf forecast from 5 Sep 2026:
- Most powerful swell: Monday 7 Sep, 11AM (local time) - 8ft (2.4m), 13s period, ENE swell with 1,815 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 2.4m 13s and forecast to arrive on Monday (Sep 07) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 13s period and expected on Tuesday (Sep 08) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Mon 7th Sep) | 8ft (2.4m) 13s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for Sandy Beach.
Honestly, looking at the whole 16-day window, it’s a tough run. There’s a big long gap at the start with no real surf to recommend, and the pattern is mostly messy, onshore winds chopping up whatever swell is trying to push in. The water temp is sitting at 81°, which is bang on average for this time of year, so no surprises there.
The first real chance to even think about paddling out doesn’t come until Saturday, September 5th. Sandy Beach (a beach and reef setup) is showing a 7 ft swell from the ENE, with a 13-second period. That’s a moderate groundswell with solid energy (combined energy of 2225), but the wind is a fresh cross-shore from the ENE at 19 mph. The report says there’s a lumpy cross-chop, and the score is low. It’s not going to be pretty. The afternoon is more of the same. This is a pass for me.
Sunday, September 6th, through the rest of the first week and into the second week, is a write-off. The wind turns cross-onshore, ramps up, and we get lumpy, choppy conditions. The swell sticks around but the quality is just not there. The waves are too blown out, and the wind is never in our favour. There is a stretch of many days here with no good surf. The energy drops off, and the period gets short and weak.
There is a slight shift around Wednesday, September 16th. A small 3 ft pulse from the SSW shows up with a very long 18-second period. The energy is moderate (1014), but it’s still cross-shore wind and lumpy. The tide or something else is making it marginal. It’s a tease, but not a goer.
Thursday, September 17th, back to the messy ENE windswell. The pattern is just stubborn.
The last real glimmer comes on Saturday, September 19th. A 3 ft SSW swell with a 16-second period. Again, the wind is cross-shore with a cross-chop, and the conditions are described as marginal. The energy is moderate (916). It’s worth a look if you’re desperate, but don’t expect much.
Unfortunately, there is no standout session in this entire outlook. The wind is always in the wrong place, the surf is never clean, and the quality is constantly poor. The only thing worth noting is the long-period SSW pulses, but they’re ruined by the onshore wind. This stretch is a solid miss. For the whole 16 days, there’s not a single moment where the stars align. It’s a real bummer, but that’s how it goes sometimes.
Rusty, signing off.
Short Range ForecastModerate rain (total 18mm), heaviest on Sun night. Warm (max 27°C on Mon afternoon, min 25°C on Sat morning). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue morning, min 25°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 13 | ENE 13 | ENE 13 | ENE 12 | E 12 | ENE 12 | ENE 13 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | ENE 10 | SSW 14 | SSW 13 | ENE 8 | ENE 7 | ENE 7 | ENE 13 | ENE 12 | ENE 12 | ENE 11 |
Wave Graph | |||||||||||||||||||||
1641 | 1654 | 1430 | 1100 | 1175 | 1338 | 1815 | 1360 | 1121 | 901 | 627 | 356 | 273 | 257 | 176 | 208 | 167 | 828 | 619 | 530 | 469 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross |
High Tide | 11:03AM0.68m | 11:10PM0.21m | 12:00PM0.71m | 00:14AM0.26m | 12:48PM0.73m | 1:03AM0.31m | 1:30PM0.72m | 1:48AM0.38m | 2:07PM0.69m | 2:29AM0.44m | 2:41PM0.65m | 3:11AM0.50m | 3:13PM0.59m | 3:51AM0.55m | |||||||
Low Tide | 7:10PM0.12m | 4:28AM0.06m | 7:41PM0.09m | 5:40AM0.04m | 8:09PM0.07m | 6:40AM0.03m | 8:36PM0.05m | 7:34AM0.03m | 9:01PM0.04m | 8:25AM0.05m | 9:26PM0.04m | 9:14AM0.08m | 9:49PM0.03m | ||||||||
6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | |
mm | — | — | — | — | 2 | 10 | 2 | 3 | 1 | — | 1 | 3 | 1 | 2 | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 25 | 26 | 25 | 25 | 26 | 25 |
Feels °C | 24 | 24 | 26 | 25 | 25 | 26 | 26 | 28 | 28 | 27 | 27 | 29 | 30 | 30 | 27 | 24 | 25 | 25 | 25 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | ENE 13 | ENE 12 | E 12 | ENE 12 | ENE 13 | SW 14 | SW 14 | SW 12 | SSW 9 | ENE 10 | ENE 8 | ENE 8 | ENE 8 | E 12 | E 12 | SW 16 | ENE 12 | ENE 12 | ENE 11 |
647 | 650 | 1430 | 1100 | 1175 | 1338 | 1521 | 1830 | 3757 | 2368 | 464 | 325 | 177 | 149 | 165 | 141 | 141 | 211 | 619 | 530 | 469 | |
Swell 2 Height (m) Direction Period (s) | SSW 18 | NNE 10 | SSW 12 | SSW 12 | SSW 12 | SW 14 | SW 12 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | SSW 8 | SSW 8 | SSW 13 | E 12 | SSW 13 | SSW 12 | S 12 | SW 16 | SW 15 | SW 15 |
62 | 19 | 404 | 444 | 385 | 822 | 463 | 1360 | 1121 | 901 | 627 | 237 | 101 | 257 | 148 | 131 | 123 | 72 | 206 | 229 | 226 | |
Swell 3 Height (m) Direction Period (s) | NNE 10 | NNE 10 | SSW 16 | SSW 16 | SSW 15 | SSW 18 | SW 15 | SSW 17 | S 8 | SSW 15 | W 11 | SSW 14 | SSW 14 | SSW 8 | SSW 13 | SSW 16 | SW 18 | SW 9 | SSW 12 | SSW 11 | SSW 11 |
20 | 19 | 166 | 220 | 154 | 344 | 542 | 510 | 196 | 498 | 577 | 356 | 273 | 64 | 176 | 179 | 154 | 21 | 45 | 43 | 24 | |
Wind waves Height (m) Direction Period (s) | ENE 13 | ENE 13 | — | — | — | — | ENE 13 | SSE 8 | SSE 8 | S 10 | — | — | — | — | — | ENE 7 | ENE 7 | ENE 13 | — | — | — |
1641 | 1654 | — | — | — | — | 1815 | 221 | 345 | 832 | — | — | — | — | — | 208 | 167 | 828 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 47 | 16 | 47 | 47 | 5 | 57 | 42 | 57 | 57 | 5 | 5 | 14 | 47 | 47 | 47 | 47 | 18 | 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.










