
Surf Forecasts:
Sixtynine surf forecast from 7 Sep 2026:
- Best quality surf: Monday 7 Sep, 11PM (local time) - 5.5ft (1.7m), 14s period, WSW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 6ft (1.9m), 13s period, WSW swell with 1,235 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 5AM (local time) - 3.5ft (1.1m), 12s period with SW 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 Monday (Sep 07) at 5AM. The primary swell is predicted to be 1.1m and 12s 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 1.9m 13s and forecast to arrive on Tuesday (Sep 08) at 2AM. 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 6s period and expected on Monday (Sep 07) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 7th Sep) | 3.5ft (1.1m) 12s |
| Best Surf | 11PM (Mon 7th Sep) | 5.5ft (1.7m) 14s |
| Most Powerful | 2AM (Tue 8th Sep) | 6ft (1.9m) 13s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
Well, roll up, roll up – let’s be honest with you straight off the bat: the next couple of weeks are looking pretty flat and pretty grim for Sixtynine. I’ve been staring at the charts and there’s just nothing to get excited about for a long while. We’re looking at a serious drought of surf, so if you’ve got other plans, make ’em. There’s a long gap of nothingness ahead, so don’t hold your breath for this week or the next.
The only real pulse of energy I can see is a very brief window on Monday afternoon, the 7th of September. It’s not gonna be pretty, but it’s the best we’ve got. The swell is coming up from the southwest at about 4ft with a long 14-second period. Combine that with a light westerly wind, and you might get a few clean-ish lines. The energy readings are moderate at best (507), so it’s not a bomb, but it’s something. The waves will be breaking at the break (Sixtynine), and with the swell coming from the SW, it’s not ideal for the WNW-optimal direction of the spot, but beggars can’t be choosers. Just don’t expect much; the forecast is marginal and the tide might mess with it. It’s a “maybe” day, not a “go” day.
After that, it’s a desert. Tuesday the 8th sees a bump in size – 6ft in the morning – but it’s got a shorter period (11 seconds) and a cross-onshore wind that’s going to chop it all up. It’s more of a mess than a surf. The energy is moderate (638), but that’s all it is. Forget it.
Then we’re in for the long haul. From Wednesday the 9th through to the 15th, it’s flat-out nothing. We’re talking knees-to-waist dribble at best, most of it under 2ft, with long periods and no power. The energy readings are weak – under 100 most of the time – and the wind is just messing with the surface, either cross-shore or just glassy with no waves to speak of. This is a proper flat spell. If you’re a beginner, you might find something to splash around on, but for anyone looking for a real wave, it’s a no-go.
There’s a faint glimmer on Wednesday afternoon, the 16th of September. The swell is still tiny at 1ft, but the period jumps up to 18 seconds. The wind is forecast to be glassy. The energy is moderate (109), but with that kind of period and that size, it might just wall up enough for a clean little ripple. It’s surfable, but only just. It’s a “grab the longboard and have a paddle” kind of day, not a “call in sick” day. The rest of that week and into the next is more of the same – tiny, weak, and nothing to write home about.
Honestly, the whole 16-day window is a poor run. There are no standout days. Nothing looks consistent, and it’s not a surprise for a spot like this. The one thing I’ll say is that when it’s been this flat for this long, it often doesn’t stay that way. The forecasts can change. But as it stands right now, I’d plan for a lot of beach walks and maybe a few flat-day paddle sessions. Keep the hope alive, but don’t get your hopes up.
Alright, that’s the grim news. I’ll keep an eye on it, but for now, the board’s staying in the car.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Sun night. Warm (max 30°C on Tue morning, min 25°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Fri night. Warm (max 28°C on Thu afternoon, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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 13 | SW 11 | SW 14 | WSW 13 | WSW 11 | W 10 | W 10 | WNW 8 | W 6 | W 6 | SW 16 | SW 18 | SW 16 | SW 10 | SW 10 | SW 15 | SW 15 | SW 14 | SW 14 |
Wave Graph | |||||||||||||||||||
437 | 205 | 507 | 1235 | 638 | 530 | 188 | 50 | 21 | 6 | 43 | 50 | 42 | 35 | 24 | 0 | 0 | 29 | 29 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-on | cross-on | glassy | on | cross-on | glassy | cross | cross | cross-off | cross-on | glassy | glassy | on | glassy | glassy |
High Tide | 1:17AM0.24m | 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 | |||||||
Low Tide | 8:26PM0.06m | 6:29AM0.01m | 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 | ||||||
— | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
6:34 | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | |
mm | 4 | — | — | — | — | — | 1 | — | 2 | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 27 | 28 | 29 | 28 | 30 | 29 | 27 | 28 | 28 | 27 | 27 | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 32 | 32 | 33 | 33 | 33 | 31 | 32 | 31 | 32 | 32 | 29 | 31 | 29 | 29 | 30 | 30 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 11 | SW 14 | WSW 13 | WSW 11 | W 10 | W 10 | NE 8 | NE 7 | NE 7 | NE 7 | NNE 7 | NE 8 | NNE 8 | NNE 8 | NNE 7 | NNE 8 | NE 6 | NNE 8 |
437 | 205 | 507 | 1235 | 638 | 530 | 188 | 53 | 54 | 62 | 57 | 19 | 50 | 39 | 40 | 37 | 45 | 31 | 62 | |
Swell 2 Height (m) Direction Period (s) | NNE 6 | NE 6 | NE 7 | NE 12 | NE 11 | NE 10 | NE 9 | WNW 8 | W 6 | SSW 13 | SW 16 | SW 18 | SW 11 | SW 10 | SW 10 | SW 15 | SW 15 | NNE 8 | SW 14 |
26 | 70 | 55 | 161 | 174 | 120 | 79 | 50 | 21 | 33 | 43 | 50 | 40 | 35 | 24 | 57 | 60 | 27 | 29 | |
Swell 3 Height (m) Direction Period (s) | ENE 12 | ENE 12 | ENE 12 | SSW 15 | SSW 15 | SSW 14 | SW 8 | SW 7 | SW 7 | W 6 | SSW 12 | SW 11 | SW 16 | SW 16 | ENE 11 | ENE 10 | ENE 10 | SW 14 | WSW 8 |
81 | 79 | 79 | 78 | 84 | 81 | 40 | 14 | 13 | 6 | 15 | 20 | 42 | 65 | 23 | 21 | 19 | 29 | 7 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NNE 5 | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | 24 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 5 | 5 | 5 | 3 | 31 | 28 | 0 | 82 | 84 | 38 | 88 | 5 | 0 | 5 | 57 | 29 | 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.










