Surf Forecasts:
Sixtynine surf forecast from 25 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 1.2m 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
G'day, Rusty here. To be straight with you, lookin' at the whole 16-day window for Sixtynine, we're in a pretty flat spell. There's no real kick of surf to get excited about, just tiny dribbles of energy that won't give you a proper ride. We're looking at a long gap of poor conditions, so don't expect much.
The period kicks off on Tuesday, 25 August with absolutely nothing – zero swell. That holds through to the end of August. We finally see a whisper of life on Monday morning, 31 August, but it's a pathetic 1 ft from the SW with a long 15-second period. The combined wave energy is a weak 42, and there's a gentle cross-shore breeze. That's not enough to get wet for. The water temp is about average for this time of year, nothing special.
Tuesday afternoon, 1 September, gives you glassy conditions but only 0.7 ft from the W. It's a tease. The whole first week and into the second week is a write-off. There's a tiny pulse on Saturday, 5 September with 1 ft from the W, period hitting 14 seconds and a glassy afternoon (energy 37), but it's still too small to surf. Sunday, 6 September has the biggest swell of the outlook at 1 ft from the WNW, with a 13-second period and combined energy hitting 57 in the morning. That's the best on offer, and it's not saying much. Afternoon goes glassy, but 1 ft ain't gonna get you out of your chair.
From there, it trickles off again. By Wednesday, 9 September, it's back to 1 ft and weak. Honestly, this is a tough run for the area. When the consistency is as low as this, a blank run like this is just normal.
This is Rusty, signing off. See you when the swell remembers how to show up.
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 29°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Sat afternoon, min 24°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | ||||||||||||||
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 | NE 6 | NE 6 | NNE 5 | W 11 | NE 6 | S 16 | W 10 | NE 6 | N 7 | SSW 14 | W 10 | W 10 | NNE 6 | NNE 6 | NE 6 | NNE 6 | NNE 7 | W 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 9 | 0 | 0 | 8 | 0 | 4 | 0 | 8 | 8 | 0 | 0 | 0 | 0 | 0 | 9 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | glassy | cross-off | cross | cross | cross-off | cross | cross-off | glassy |
High Tide | 2:25AM0.28m | 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 | |||||||
Low Tide | 9:33PM0.09m | 7:49AM0.01m | 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 | ||||||
 |  | |  | |  |  | | | | | | | | | | | | | |
 | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:45 | — | 6:44 | — | — | 6:43 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 29 | 29 | 26 | 27 | 27 | 25 | 27 | 28 | 26 | 28 | 28 | 26 | 27 | 29 | 26 | 28 | 28 | 26 |
Feels °C | 32 | 31 | 30 | 27 | 27 | 28 | 26 | 28 | 31 | 28 | 30 | 31 | 28 | 28 | 31 | 29 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 6 | NE 6 | NNE 5 | NNE 5 | NE 6 | SSW 13 | SSW 16 | NE 6 | SSW 15 | NNE 5 | NNE 6 | NE 6 | NNE 6 | NNE 6 | NE 6 | NNE 6 | NNE 7 | NNE 7 |
| kJ | 38 | 31 | 47 | 16 | 22 | 31 | 17 | 48 | 38 | 42 | 15 | 42 | 39 | 34 | 65 | 39 | 37 | 76 | 61 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 12 | SSW 12 | SSW 14 | SSW 15 | SSW 17 | S 16 | ENE 7 | SSW 15 | N 7 | NNE 7 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 17 | SSW 16 | SSW 15 | SW 15 |
| kJ | 32 | 29 | 14 | 21 | 21 | 27 | 21 | 4 | 44 | 4 | 10 | 18 | 34 | 16 | 15 | 27 | 25 | 22 | 58 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 12 | W 11 | SSW 14 | ENE 7 | W 10 | SSW 12 | ENE 7 | SSW 14 | W 10 | W 10 | E 13 | SSW 17 | SSW 12 | S 12 | S 12 | W 11 |
| kJ | 26 | 25 | 24 | 14 | 9 | 18 | 5 | 8 | 14 | 4 | 39 | 8 | 8 | 14 | 28 | 14 | 11 | 11 | 9 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NNE 5 | NNE 5 | — | NNE 5 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 15 | 16 | — | 9 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 38 | 94 | 97 | 38 | 38 | 46 | 38 | 88 | 57 | 42 | 94 | 94 | 58 | 88 | 57 | 29 | 88 | 46 | 5 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sixtynine surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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