Surf Forecasts:
Sixtynine surf forecast from 26 Aug 2026:
- Most powerful swell: Sunday 30 Aug, 2AM (local time) - 1ft (0.3m), 17s period, SW swell with 44 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 17s and forecast to arrive on Sunday (Aug 30) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Friday (Aug 28) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 30th Aug) | 1ft (0.3m) 17s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
Alright, I’m looking at the forecast for the next couple of weeks, and honestly, it’s a pretty grim picture for Sixtynine. We’re staring down the barrel of a long, flat spell with barely a ripple to get excited about.
From Wednesday the 26th of August right through until about the 10th of September, it’s almost all “poor surf conditions” across the board. The combined swell energy is next to nothing, with the highest reading we see being a measly 55 (weak energy) on the 8th of September. That’s not going to push anything rideable. For the first week, from the 26th through to the 2nd of September, we’ve got continual flatness with swell heights barely scraping 1 foot, and periods that are often short. The wind is mostly light cross-shore, which would be nice if there was any swell, but there isn’t.
Come Wednesday the 3rd of September, it’s still tiny, with a 2-foot, 5-second swell showing up, but that’s a weak, short-period windswell that won't offer any shape. The energy is still minimal at 19. The rest of that week stays flat, with a few clean cross-offshore winds on the 4th and 5th, but again, no swell to use them. On the 6th of September, a tiny 1-foot, 12-second groundswell from the west-northwest appears, but it’s still too small to surf. The combined energy only reaches 50.
The real kicker is that every single wave comment in the data says “poor surf conditions.” There’s no standout day, no hidden gem. The break is fairly consistent in the sense that it’s consistently flat. For a spot that’s fairly exposed to a west-northwest swell, this is just a dud run. The water temp is about average for this time of year, so that’s nothing to write home about either.
If you’re desperate, Wednesday the 3rd of September morning has a tiny bump, but it’s a 5-second period with a gentle cross-shore, so you’d be lucky to get a knee-high closeout. Honestly, this setup looks more interesting for a kite surfer than a paddle surfer if anything picks up.
So, bottom line: there’s nothing on the table for the next 16 days. Stay home, wax the board for the next run, and hope the forecasts change.
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Wed afternoon, min 24°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Mon afternoon, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | W 11 | NNE 5 | S 16 | W 10 | N 8 | N 7 | SSW 14 | W 10 | W 10 | SW 18 | NNE 6 | SW 17 | NE 7 | SW 15 | SW 15 | SW 15 | W 12 | W 12 | NNE 7 | NNE 7 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 9 | 0 | 0 | 8 | 5 | 4 | 0 | 8 | 8 | 12 | 0 | 44 | 0 | 36 | 36 | 33 | 11 | 11 | 0 | 0 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross | cross-off | cross-on | cross | cross-off | cross | glassy | cross-off | cross-on | cross-off | cross-off | cross | glassy | cross-off | on | on | glassy |
High Tide | 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 | 7:06AM0.60m | 6:23PM0.39m | ||||||||
Low Tide | 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 | 1:23PM0.19m | 00:44AM-0.01m | |||||||
 | |  | |  |  | | | | | | | | | | | | | | | | |
 | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 6:43 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 29 | 26 | 29 | 28 | 27 |
Feels °C | 27 | 29 | 27 | 28 | 29 | 30 | 29 | 30 | 29 | 29 | 30 | 29 | 30 | 31 | 28 | 29 | 30 | 29 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | NNE 5 | SSW 13 | SSW 16 | NE 5 | SSW 15 | NNE 5 | NE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NE 7 | NE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 7 | NE 5 | NNE 8 |
| kJ | 21 | 34 | 17 | 24 | 29 | 42 | 13 | 47 | 27 | 33 | 63 | 29 | 44 | 34 | 41 | 66 | 81 | 78 | 47 | 23 | 80 |
Swell 2 Height (m) Direction Period (s) | W 11 | SSW 17 | S 16 | SSW 12 | SSW 15 | N 7 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | NE 7 | SSW 16 | NNE 7 | SW 15 | SW 15 | SSW 14 | SSW 14 | NE 8 | NNE 7 | SSW 16 |
| kJ | 9 | 27 | 21 | 15 | 44 | 4 | 39 | 18 | 34 | 16 | 15 | 8 | 25 | 43 | 36 | 33 | 20 | 20 | 44 | 43 | 51 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | SSW 14 | ENE 7 | W 10 | N 8 | W 9 | NNE 7 | W 10 | W 10 | SW 18 | SSW 17 | SW 17 | S 12 | SW 15 | W 11 | W 11 | W 12 | W 12 | SSW 18 | NE 8 | SW 14 |
| kJ | 12 | 18 | 5 | 8 | 5 | 2 | 9 | 8 | 8 | 12 | 28 | 44 | 11 | 36 | 9 | 9 | 11 | 11 | 31 | 34 | 8 |
Wind waves Height (m) Direction Period (s) | NNE 5 | — | NNE 5 | NNE 5 | — | NE 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 22 | — | 15 | 21 | — | 22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 94 | 29 | 38 | 38 | 94 | 42 | 94 | 94 | 41 | 94 | 88 | 29 | 88 | 29 | 38 | 29 | 57 | 41 | 88 | 88 | 41 |
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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