Surf Forecasts:
Sixtynine surf forecast from 9 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 5AM (local time) - 2.5ft (0.8m), 8s period, W swell with glassy winds.
- Most powerful swell: Wednesday 9 Sep, 5AM (local time) - 2.5ft (0.8m), 8s period, W swell with 72 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 5AM (local time) - 2.5ft (0.8m), 8s period with W 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 Wednesday (Sep 09) at 5AM. The primary swell is predicted to be 0.8m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Sixtynine in the next 16 days are 0.8m 8s and forecast to arrive on Wednesday (Sep 09) at 5AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 7s period and expected on Thursday (Sep 10) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 9th Sep) | 2.5ft (0.8m) 8s |
| Best Surf | 5AM (Wed 9th Sep) | 2.5ft (0.8m) 8s |
| Most Powerful | 5AM (Wed 9th Sep) | 2.5ft (0.8m) 8s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
Alright, let’s get this straight. It’s flat. Proper flat. We’re looking at a long stretch of nothing for the next two and a half weeks, so if you’ve got a board that needs dusting off, it’s going to keep collecting dust for a while. There isn’t a single decent wave on the menu. We’re talking about a serious dry spell.
The window starts now, and it runs all the way through to Thursday the 24th, and honestly, that’s a whole lot of nothing. The swell just doesn’t get going. We’ve got these tiny slivers of energy, ankle-biters at best. On the morning of the 10th, that combo of a 1ft SW groundswell with an 16-second period looks promising on paper, but the guidance has it marked as poor, and barely any energy behind it (42). It’s a tease. And that’s the best it gets.
The 18th shows a little bump — 1.3ft of SW swell with a 17-second period — and the combined energy jumps to (101), which is at least moderate, but the wind is cross and it’s still just not enough to push through. By the 20th, we've got some clean glassy conditions, but the swell is still a piddly 1ft. It’s not gonna happen. The 23rd has a similar story: some long-period SW groundswell (17 seconds), but no size behind it and a cross-shore wind to mess it up.
Bottom line: if you’re a kite surfer, maybe you can find some fun on the 22nd or 23rd when the NE wind picks up to 12-13 mph, and it’s cross-off. But for a paddle surfer, this is a ghost town. There is no standout, there is nothing to get excited about. The breaks are consistent, sure, they are always there, but with no swell, it doesn’t matter. It’s one of those stretches where you just wait it out.
Short Range ForecastModerate rain (total 13mm), heaviest on Wed afternoon. Warm (max 29°C on Wed morning, min 25°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Mon afternoon. Warm (max 28°C on Sun afternoon, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | WNW 8 | W 7 | W 6 | W 6 | SW 16 | SW 18 | SW 16 | SW 10 | SW 9 | SW 9 | WSW 8 | SW 14 | SW 14 | NNE 9 | W 11 | W 11 | W 10 | SSW 22 | NNE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 85 | 22 | 12 | 5 | 42 | 49 | 0 | 23 | 21 | 12 | 7 | 29 | 29 | 0 | 9 | 9 | 8 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | glassy | glassy | cross | cross-off | glassy | glassy | glassy | on | glassy | glassy | on | glassy | glassy | on | glassy | glassy |
High Tide | 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 | 6:08AM0.62m | 5:43PM0.39m | |||||||
Low Tide | 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 | 12:31PM0.14m | 11:45PM0.02m | ||||||
 |  |  |  | |  |  | | | | | | |  | | | | | | |
 | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:31 | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:28 | — | — | 6:27 | — |
mm | — | — | 3 | 4 | — | 4 | — | — | 2 | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 28 | 29 | 28 | 27 | 29 | 28 | 27 | 27 | 26 | 26 | 27 | 27 | 26 | 27 | 28 | 26 | 28 | 28 | 27 |
Feels °C | 34 | 33 | 32 | 31 | 33 | 33 | 30 | 30 | 29 | 30 | 30 | 31 | 30 | 29 | 31 | 29 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | NNE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NNE 4 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NE 8 | NNE 9 | NNE 8 | NNE 9 | NNE 8 | NE 8 | NNE 8 |
| kJ | 85 | 44 | 35 | 44 | 48 | 47 | 8 | 37 | 39 | 37 | 43 | 61 | 74 | 68 | 48 | 65 | 62 | 34 | 43 |
Swell 2 Height (m) Direction Period (s) | NE 9 | W 7 | W 6 | W 6 | SW 16 | SW 18 | NNE 8 | SW 10 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | NE 5 | NE 5 | SSW 14 | W 10 | NNE 4 | SSW 21 |
| kJ | 64 | 22 | 12 | 5 | 42 | 49 | 13 | 23 | 57 | 57 | 49 | 29 | 29 | 7 | 10 | 20 | 8 | 10 | 45 |
Swell 3 Height (m) Direction Period (s) | WSW 8 | SW 7 | SW 7 | SSW 13 | SSW 13 | SSW 13 | SW 16 | ENE 11 | SW 9 | SW 9 | WSW 8 | ENE 5 | WSW 8 | SSW 12 | W 11 | W 11 | SW 14 | SSW 22 | SSW 13 |
| kJ | 33 | 14 | 13 | 33 | 16 | 16 | 67 | 24 | 21 | 12 | 7 | 5 | 6 | 15 | 9 | 9 | 8 | 46 | 17 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 31 | 84 | 42 | 88 | 29 | 5 | 57 | 5 | 5 | 88 | 92 | 57 | 88 | 38 | 38 | 88 | 42 | 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.
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