
Surf Forecasts:
Sixtynine surf forecast from 8 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 2AM (local time) - 7.5ft (2.3m), 13s period, WSW swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 11PM (local time) - 7ft (2.2m), 14s period, WSW swell with 1,906 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 2AM (local time) - 7.5ft (2.3m), 13s period with WSW swell.
Best Forecast Surf Conditions for Sixtynine this week:
The surf forecast for Sixtynine over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 08) at 2AM. The primary swell is predicted to be 2.3m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sixtynine in the next 16 days are 2.2m 14s and forecast to arrive on Monday (Sep 07) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 12s period and expected on Monday (Sep 07) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 8th Sep) | 7.5ft (2.3m) 13s |
| Best Surf | 2AM (Tue 8th Sep) | 7.5ft (2.3m) 13s |
| Most Powerful | 11PM (Mon 7th Sep) | 7ft (2.2m) 14s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the menu for Sixtynine over the next couple of weeks. I gotta be straight with you – this is shaping up to be one of those frustrating stretches where the ocean just doesn't want to play ball. We're looking at a long, drawn-out run of small, weak, and messy conditions. The water temp is sitting around 82°, which is pretty normal for this time of year, so at least you won't need a thick wetsuit to stare at the flatness.
We kick things off on Monday the 7th, and honestly, it's a rough start. There's some waist-high swell in the morning (3 ft) from the SW with a weak energy reading of 205, but it's pretty poor. By the afternoon, the swell bumps up to 4 ft and the period stretches out to a very long 15 seconds, which sounds good for the points and reefs, but the wind is cross-on and messy, making it a marginal call at best with moderate energy (695).
Tuesday the 8th sees the swell peak with 6 ft from the WSW (869 energy), but it's blown out by that cross-on wind. Not a pretty picture. Then Wednesday the 9th drops off a cliff – we're down to ankle-slappers (2 ft) with a short 7-second period and weak energy (31). From there, it's a flat spell. The next week is filled with days where the combined energy is in the single or double digits, if not zero. We get a few moments of glassy conditions on Thursday the 10th, Friday the 11th, and Saturday the 12th, but the swell is so tiny (1 ft to 1 ft) and weak (energy around 22-50) it's barely a ripple, even with that long-period groundswell.
The only faint glimmer comes on Monday the 14th of September. The morning is poor, but in the afternoon the wind goes glassy and a tiny 1 ft swell from the SW arrives with a very, very long 22-second period. The energy is still weak (73), but it's described as "surfable." You might get a clean but tiny wave if you're on a log. It's not going to be good, just not completely hopeless.
Forget the rest of the week; Tuesday the 15th, Wednesday the 16th, Thursday the 17th, and Friday the 18th are all write-offs with flat or near-flat conditions and the occasional bit of wind. The final glimmer of hope appears on Tuesday the 22nd of September. The afternoon shows a glassy surface with a 2 ft swell from the N and a 12-second period. The energy is still low (75), but it's described as "surfable." For the first time in over a week, there's a tiny window for a clean, small-wave session. It's nothing to get excited about, but it's the best we've got.
To be honest, if you're looking for a proper paddle, there isn't a standout day in this entire run. The setup is more interesting for a kite surfer than a paddle surfer if that 6 ft day on Tuesday the 8th had any consistency, but it didn't. We're in for a long, flat run. Hang in there, forecasts can change, but for now, don't hold your breath.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Wed afternoon. Warm (max 30°C on Mon afternoon, min 26°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Thu afternoon. Warm (max 28°C on Thu morning, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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) | SW 11 | SW 15 | WSW 13 | WSW 11 | W 11 | WNW 9 | WNW 7 | WNW 7 | W 6 | SW 16 | SW 18 | SW 16 | SW 10 | SW 9 | SW 15 | SW 14 | SW 14 | SW 14 | NNE 8 | NNE 8 | W 11 |
Wave Graph | |||||||||||||||||||||
205 | 695 | 1834 | 869 | 507 | 138 | 31 | 9 | 6 | 42 | 50 | 42 | 24 | 22 | 0 | 0 | 29 | 29 | 0 | 0 | 9 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | cross-on | on | glassy | on | cross-on | glassy | glassy | glassy | cross-off | cross-on | glassy | glassy | on | glassy | glassy | glassy | glassy | glassy |
High Tide | 1:49PM0.75m | 2:08AM0.31m | 2:32PM0.75m | 2:51AM0.39m | 3:10PM0.73m | 3:32AM0.46m | 3:45PM0.69m | 4:11AM0.53m | 4:16PM0.63m | 4:50AM0.58m | 4:46PM0.55m | 5:28AM0.61m | 5:15PM0.47m | ||||||||
Low Tide | 8:55PM0.03m | 7:32AM-0.01m | 9:22PM0.01m | 8:26AM-0.02m | 9:48PM-0.01m | 9:15AM-0.00m | 10:13PM-0.02m | 10:03AM0.02m | 10:37PM-0.02m | 10:50AM0.06m | 11:00PM-0.01m | 11:39AM0.10m | 11:22PM-0.00m | ||||||||
6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:28 | — | |
mm | — | — | — | — | — | — | — | 4 | 5 | — | 2 | — | — | 2 | — | — | — | — | — | — | — |
Temp °C | 28 | 30 | 28 | 30 | 30 | 28 | 28 | 28 | 27 | 28 | 28 | 26 | 27 | 26 | 26 | 27 | 27 | 26 | 28 | 28 | 27 |
Feels °C | 32 | 33 | 33 | 32 | 33 | 33 | 31 | 33 | 32 | 31 | 32 | 30 | 30 | 29 | 30 | 30 | 31 | 30 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 15 | WSW 13 | WSW 11 | W 11 | WNW 9 | NNE 8 | NE 7 | NE 7 | NE 7 | NE 7 | NNE 8 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NE 9 | NNE 8 | NNE 8 | NNE 8 |
205 | 695 | 1834 | 869 | 507 | 138 | 44 | 54 | 51 | 42 | 46 | 55 | 27 | 42 | 37 | 44 | 41 | 75 | 46 | 46 | 46 | |
Swell 2 Height (m) Direction Period (s) | NE 7 | NE 7 | NE 12 | NE 11 | SW 9 | NE 9 | WNW 7 | WNW 7 | W 6 | SW 16 | SW 18 | SW 10 | SW 10 | SW 9 | SW 15 | SW 14 | NE 5 | SW 14 | SSW 12 | NNE 4 | SSW 14 |
49 | 67 | 195 | 142 | 156 | 62 | 31 | 9 | 6 | 42 | 50 | 17 | 24 | 22 | 57 | 49 | 8 | 29 | 15 | 6 | 20 | |
Swell 3 Height (m) Direction Period (s) | ENE 12 | ENE 12 | SSW 15 | SSW 15 | NE 10 | SW 8 | SW 7 | WSW 6 | SSW 13 | SSW 13 | SSW 13 | SW 16 | SW 16 | ENE 11 | ENE 11 | ENE 10 | SW 14 | WSW 8 | SSW 15 | SSW 15 | W 11 |
79 | 79 | 78 | 85 | 124 | 28 | 14 | 7 | 34 | 16 | 16 | 42 | 65 | 23 | 22 | 10 | 29 | 7 | 22 | 21 | 9 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 41 | 0 | 29 | 28 | 0 | 84 | 84 | 42 | 88 | 29 | 29 | 8 | 88 | 82 | 88 | 88 | 29 | 29 | 46 | 38 |
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.










