
Surf Forecasts:
Sandy Beach surf forecast from 30 Jul 2026:
- Most powerful swell: Saturday 1 Aug, 8AM (local time) - 10ft (3.0m), 8s period, E swell with 1,142 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 3.0m 8s and forecast to arrive on Saturday (Aug 01) 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 Friday (Jul 31) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Sat 1st Aug) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Sandy Beach over the next 16 days.
The Lowdown
Right, let’s have a look at what’s cooking across the next 16 days for Sandy Beach. Honestly, I’d usually be buzzing to talk about this place, but looking at the charts, it’s a tough one. The whole stretch is a write-off for good, clean waves.
We start off Thursday, July 30th, and straight away it’s a no-go. The wind is ripping from the ENE at 16 mph, cross-on, with a short-period 5 ft swell from the same direction. The water’s sitting at 80°, which is about average for this time of year, but the surf is just choppy and messy. The combined energy is moderate (399), but it’s all windswell with no shape. That afternoon, the swell drops to 2 ft but the period jumps to 18 seconds – that’s a very long period groundswell. But with 19 mph ENE winds, it’s just lumpy and poor. Zero chance of a decent wave.
Friday, July 31st, through the weekend and into next week, it’s the same story on repeat. The wind stays locked in from the ENE, blowing 22 to 28 mph. The swell builds from 6 ft up to 10 ft by Saturday afternoon, but it’s all short-period 8 seconds and blowing straight across or onshore. The combined energy spikes into the strong range (up to 1439 on Saturday), but that’s just raw power with no quality. This is a beach-and-reef setup, and with that much wind and junk, it’s honestly more interesting for kite surfing than paddle surfing. The waves will be blown out, cross-chop mess.
We get a bit of a break in the wind on Monday, August 3rd, down to 16 mph, but it’s still cross-shore, and the swell is 5 ft to 6 ft of short-period mush. Not worth paddling out for.
On Tuesday, August 4th, the period lifts to 11 seconds on a 5 ft ENE swell, and the wind drops to 12 mph. The wave comment is “marginal” – it’s a sniff of something, but still cross-shore chop. The energy is moderate (688). Definitely not a standout.
From Wednesday, August 5th, through to the end of the forecast, the swell gets smaller, dropping to 1 ft to 5 ft, and the wind stays mostly from the ENE, rarely letting up. The few moments with light winds, like Thursday, August 13th afternoon with 6 mph ESE, only have a tiny 2 ft swell. There’s nothing here that will get your heart racing.
So, to be straight with you – there are no good surf options in this 16-day window for Sandy Beach. It’s a long, blank run. The wind is just relentless from the east, and the swell direction is all wrong for this spot. The break prefers an ESE swell, and we’re getting ENE to E windswell or long-period groundswell from the south that gets ruined by the wind. It’s one of those stretches where the forecast can change, but for now, leave the board at home, or if you’re desperate, bring a kite.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Thu morning, min 25°C on Thu night). Winds increasing (light winds from the ENE on Thu afternoon, strong winds from the ENE by Fri night). | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Sun morning, min 24°C on Sun night). Winds decreasing (strong winds from the ENE on Sun morning, light winds from the ENE by Tue night). | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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 8 | SSW 18 | ENE 7 | E 8 | ENE 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 |
Wave Graph | |||||||||||||||||||||
220 | 207 | 220 | 329 | 437 | 946 | 994 | 1081 | 1026 | 844 | 740 | 646 | 422 | 347 | 329 | 637 | 515 | 325 | 222 | 184 | 61 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross |
High Tide | 3:57PM0.68m | 4:08AM0.30m | 4:25PM0.65m | 4:55AM0.33m | 4:53PM0.60m | 5:48AM0.38m | 5:22PM0.53m | 6:48AM0.43m | 5:53PM0.45m | 7:57AM0.48m | 6:26PM0.37m | 9:10AM0.55m | 7:10PM0.29m | ||||||||
Low Tide | 8:58AM0.02m | 11:13PM0.07m | 9:38AM0.05m | 11:37PM0.06m | 10:23AM0.11m | 00:02AM0.05m | 11:17AM0.16m | 00:29AM0.04m | 12:27PM0.23m | 00:59AM0.04m | 2:07PM0.27m | 1:37AM0.03m | 4:33PM0.27m | 2:24AM0.02m | |||||||
6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | |
— | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 |
Feels °C | 26 | 28 | 26 | 23 | 21 | 21 | 20 | 20 | 21 | 21 | 21 | 21 | 24 | 23 | 22 | 25 | 24 | 25 | 27 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | S 13 | S 12 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | E 12 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 |
220 | 181 | 166 | 153 | 301 | 205 | 267 | 196 | 194 | 188 | 142 | 125 | 82 | 117 | 184 | 637 | 515 | 325 | 222 | 184 | 61 | |
Swell 2 Height (m) Direction Period (s) | S 14 | S 13 | SSW 16 | E 15 | SW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 13 | SSW 13 | SSW 12 | SSW 12 | SSE 14 | SSW 11 | SSW 11 | SSW 15 | SW 15 |
179 | 171 | 177 | 159 | 239 | 223 | 127 | 123 | 131 | 133 | 67 | 57 | 42 | 32 | 48 | 46 | 65 | 47 | 40 | 88 | 56 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | SSW 18 | E 16 | SW 16 | S 12 | S 12 | S 12 | S 11 | S 11 | N 9 | N 9 | SW 13 | SSW 13 | SW 12 | SSW 18 | SSE 7 | SSW 11 | SSE 13 | SW 16 | SSW 11 | S 12 |
154 | 207 | 127 | 206 | 106 | 72 | 42 | 39 | 22 | 15 | 14 | 42 | 32 | 38 | 30 | 5 | 43 | 58 | 61 | 39 | 45 | |
Wind waves Height (m) Direction Period (s) | — | — | ENE 7 | E 8 | ENE 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | — | — | — | ENE 6 |
— | — | 220 | 329 | 437 | 946 | 994 | 1081 | 1026 | 844 | 740 | 646 | 422 | 347 | 329 | — | — | — | — | — | 56 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 42 | 42 | 16 | 55 | 59 | 113 | 111 | 110 | 113 | 55 | 63 | 50 | 16 | 50 | 16 | 16 | 14 | 14 | 20 | 17 | 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.











