Surf Forecasts:
Sixtynine surf forecast from 26 Aug 2026:
- Most powerful swell: Sunday 30 Aug, 5AM (local time) - 1ft (0.3m), 16s period, SW swell with 43 kJ wave energy.
Best Forecast Surf Conditions for Sixtynine this week:
The most powerful waves expected at Sixtynine in the next 16 days are 0.3m 16s and forecast to arrive on Sunday (Aug 30) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 8s period and expected on Monday (Aug 31) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Sun 30th Aug) | 1ft (0.3m) 16s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
Alright, Rusty here with a look at the next few weeks for Sixtynine.
Honestly, I gotta be straight with you – we’re looking at a pretty flat spell ahead. The forecast is showing hardly any surf for the first week and a half. There's a long stretch with nothing rideable, and the swell energy is just way too weak to get excited about. It's a bit of a quiet period for this spot.
The first real sign of life doesn't come until Monday the 7th of September. The late afternoon might offer a tiny window of surfable waves, but the conditions are pretty ordinary. You’re looking at a 2ft swell coming from the west with a period of 12 seconds, and the combined energy only hits 73 (moderate). The wind goes glassy though, which is the only saving grace for a clean surface. It’s not a stand-out, just a slight possibility if you’re desperate for a paddle.
Tuesday the 8th of September is more of the same story. The afternoon glass-off could give you a clean wave on the same 2ft westerly swell, but the energy is still low at 86 (moderate). The break is consistent and fairly exposed to the swell, but the wave quality is just not there. Remember, the water temperature is sitting at 82°, which is a touch warmer than normal for this time of year.
Wednesday the 9th of September is the best we’ve got on offer. The swell holds at 2ft from the west, but the wind turns cross-off from the NE at 9 mph, which will clean things up nicely. The period is 12 seconds, giving a little more shape. The combined energy is 71 (moderate). It’s still not a big day by any means, but if you’re itching for a surf, the morning session on the 9th is your best bet. It’s the only one that’s close to being a highlight.
Apart from that, the charts are bare. The other days are just too small or have no swell at all. It’s a lean run, but that’s how it goes sometimes.
Stay patient, and check back in with me.
Rusty
Short Range ForecastMostly dry. Warm (max 29°C on Tue afternoon, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Sun morning, min 25°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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) | NE 6 | W 11 | W 11 | W 10 | W 10 | SSW 16 | N 7 | N 7 | N 7 | NNE 5 | W 10 | SW 18 | NNE 6 | NE 6 | NNE 7 | NNE 7 | SW 15 | SW 15 | W 12 | W 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 10 | 9 | 8 | 8 | 0 | 4 | 9 | 4 | 0 | 8 | 12 | 0 | 0 | 0 | 0 | 36 | 33 | 11 | 11 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-off | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross-on | glassy | cross-off | cross-on | cross | cross-off |
High Tide | 2:59PM0.71m | 3:00AM0.33m | 3:28PM0.72m | 3:36AM0.38m | 3:56PM0.71m | 4:12AM0.43m | 4:24PM0.68m | 4:50AM0.48m | 4:52PM0.63m | 5:31AM0.53m | 5:21PM0.56m | 6:15AM0.57m | 5:51PM0.48m | |||||||
Low Tide | 9:53PM0.07m | 8:30AM0.00m | 10:13PM0.05m | 9:11AM0.01m | 10:35PM0.03m | 9:51AM0.02m | 10:57PM0.01m | 10:34AM0.05m | 11:20PM-0.01m | 11:21AM0.09m | 11:45PM-0.02m | 12:16PM0.14m | 00:12AM-0.02m | |||||||
 |  |  | |  | | | | | | | | | | | | | | | | |
 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:44 | — | — | 6:43 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 26 | 27 | 28 | 25 | 27 | 27 | 26 | 27 | 28 | 26 | 28 | 28 | 26 | 29 | 29 | 26 | 28 | 28 | 26 |
Feels °C | 31 | 28 | 27 | 29 | 26 | 28 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 29 | 31 | 32 | 29 | 30 | 30 | 27 |
Swell 1 Height (m) Direction Period (s) | NE 6 | SSW 14 | SSW 15 | SSW 17 | SSW 13 | NNE 5 | NE 6 | NNE 5 | NE 5 | NNE 5 | SSW 13 | NE 6 | NNE 6 | NE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 8 |
| kJ | 47 | 21 | 21 | 27 | 17 | 17 | 44 | 17 | 21 | 22 | 34 | 34 | 47 | 40 | 40 | 76 | 59 | 77 | 90 | 120 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | ENE 7 | SSW 14 | S 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | NNE 6 | W 10 | SSW 13 | SSW 12 | SSW 17 | SSW 16 | SSW 15 | SW 15 | SW 15 | SSW 14 | SSW 14 |
| kJ | 14 | 14 | 4 | 18 | 21 | 24 | 44 | 42 | 39 | 8 | 8 | 16 | 15 | 27 | 25 | 22 | 36 | 33 | 20 | 20 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | W 11 | W 11 | W 10 | W 10 | SSW 12 | N 7 | N 7 | N 7 | SSW 13 | E 14 | SW 18 | SSW 17 | SSW 12 | S 12 | S 12 | W 11 | W 11 | W 12 | W 12 |
| kJ | 24 | 10 | 9 | 8 | 8 | 15 | 4 | 9 | 4 | 18 | 4 | 12 | 28 | 14 | 11 | 11 | 9 | 9 | 11 | 11 |
Wind waves Height (m) Direction Period (s) | — | NNE 5 | NNE 5 | NE 5 | NNE 5 | — | — | — | — | — | NNE 6 | — | — | — | — | — | — | — | — | — |
| kJ | — | 17 | 16 | 28 | 16 | — | — | — | — | — | 31 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 97 | 38 | 88 | 57 | 38 | 92 | 88 | 38 | 94 | 45 | 82 | 88 | 88 | 29 | 88 | 46 | 29 | 94 | 94 | 29 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Sixtynine Surf forecast
The above surf forecast table for Sixtynine provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sixtynine can be found by selecting the local surf guide option on the grey menu. Our Sixtynine 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 (Sixtynine) 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 Sixtynine 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.
Sixtynine is 84 km (52 miles) from Hilo. If you plan a vacation in Big Island, look for hotels and other accommodation in Hilo. Hilo has rooms for a wide range of budgets as well as car hire and transport links.
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