
Surf Forecasts:
Sixtynine surf forecast from 3 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 2AM (local time) - 7ft (2.2m), 14s period, WSW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 5AM (local time) - 8ft (2.5m), 14s period, WSW swell with 2,618 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 5AM (local time) - 4ft (1.2m), 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 1.2m 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 2.5m 14s and forecast to arrive on Tuesday (Sep 08) 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 13s period and expected on Sunday (Sep 06) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 7th Sep) | 4ft (1.2m) 12s |
| Best Surf | 2AM (Tue 8th Sep) | 7ft (2.2m) 14s |
| Most Powerful | 5AM (Tue 8th Sep) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s be straight with you about the next couple of weeks—this is looking like a tough stretch for surf at Sixtynine. We’ve got a long quiet patch to start, then a pulse of swell that’s more about size than quality.
The first real surf worth paddling for shows up on the morning of the 7th of September—Monday. Before that, there’s a five-day gap with nothing rideable: tiny bumps, crossed-up wind, and glassy flat spells. On Monday the 7th, a south-west groundswell (13 seconds) pushes in, producing 4 ft faces. The combined energy hits 493—moderate. The crowd potential here is “coffee” (not huge). Wind is WNW offshore, but the look is cross-on, so the surface won’t be perfect. Water temp sits at 82°, about normal for this time of year—no surprises there.
Monday afternoon sees the swell pick up to 5 ft, still from the SW, period holding at 13 seconds. Light WSW wind, cross-on again, so messy, but the energy jumps to 701. Not clean enough to get excited about. Tuesday the 8th of September brings the biggest swell of the window: 8 ft from the WSW, period dropping to 11 seconds. The combined energy rockets to 2469—strong. That’s expert territory for the size alone. The wind though, WSW still cross-on and a bit of chop. Only hard-core chargers should look at that. By Tuesday afternoon the swell backs to 8 ft, energy at 1261, with light cross-onshore wind. Still not glassy.
After the 8th, it’s back to fluky little pulses and mostly flat or marginal conditions. The 7th and 8th of September are the only real standouts, and even then, they’re more about size than clean lines. The south-west direction (WNW optimum swell for Sixtynine) isn’t far off, but the wind never truly gets glass until it’s too small. For the rest of the outlook—nothing worth chasing.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Thu morning, min 24°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sun afternoon. Warm (max 31°C on Tue morning, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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 10 | W 10 | NNE 7 | W 9 | NE 6 | NE 6 | N 8 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 | SW 13 | SW 12 | SW 13 | SW 13 | WSW 14 | WSW 13 | WSW 11 | W 10 |
Wave Graph | ||||||||||||||||||||
8 | 8 | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 473 | 701 | 2025 | 2469 | 1261 | 313 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross-off | cross-on | glassy | glassy | on | glassy | glassy | on | cross-on | glassy | cross-on | cross-on | glassy |
High Tide | 6:59PM0.30m | 9:20AM0.63m | 7:55PM0.22m | 10:42AM0.65m | 10:08PM0.17m | 11:57AM0.69m | 00:08AM0.19m | 12:59PM0.72m | 1:17AM0.24m | 1:49PM0.75m | 2:08AM0.31m | 2:32PM0.75m | 2:51AM0.39m | |||||||
Low Tide | 2:57PM0.22m | 1:24AM0.00m | 5:16PM0.20m | 2:19AM0.02m | 7:06PM0.15m | 3:40AM0.04m | 7:52PM0.09m | 5:12AM0.03m | 8:26PM0.06m | 6:29AM0.01m | 8:55PM0.03m | 7:32AM-0.01m | 9:22PM0.01m | |||||||
— | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | |
6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 | — | — | — | 1 |
Temp °C | 28 | 26 | 29 | 29 | 25 | 27 | 29 | 26 | 28 | 28 | 27 | 29 | 28 | 27 | 28 | 29 | 28 | 31 | 30 | 28 |
Feels °C | 30 | 26 | 29 | 29 | 24 | 27 | 30 | 27 | 30 | 30 | 31 | 32 | 31 | 31 | 31 | 33 | 32 | 33 | 32 | 33 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 8 | NNE 7 | NE 7 | S 13 | NE 6 | SSW 12 | NNE 6 | NNE 6 | NNE 6 | SSW 12 | SW 12 | SW 13 | SW 12 | SW 13 | SW 13 | WSW 14 | NE 10 | WSW 11 | W 10 |
107 | 82 | 64 | 85 | 31 | 54 | 48 | 30 | 52 | 49 | 231 | 268 | 451 | 430 | 473 | 701 | 2025 | 94 | 1261 | 313 | |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 15 | NE 5 | S 14 | ENE 8 | SSW 13 | E 14 | SSW 12 | SSW 12 | SSW 12 | NNE 7 | NNE 7 | NNE 6 | NNE 6 | ENE 12 | NE 6 | NE 11 | SSW 15 | NE 9 | SW 9 |
45 | 42 | 6 | 16 | 6 | 33 | 16 | 75 | 106 | 156 | 34 | 37 | 33 | 30 | 167 | 43 | 171 | 43 | 67 | 132 | |
Swell 3 Height (m) Direction Period (s) | W 10 | W 10 | S 14 | W 9 | E 14 | S 11 | N 8 | ENE 14 | ENE 14 | ENE 13 | E 13 | ENE 12 | ENE 12 | ENE 12 | SSW 17 | ENE 12 | SSW 16 | E 14 | SSW 14 | NNE 8 |
8 | 8 | 16 | 2 | 4 | 21 | 1 | 66 | 66 | 60 | 87 | 82 | 83 | 115 | 96 | 121 | 81 | 15 | 70 | 46 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NE 6 | — | NE 6 | — | — | — | — | — | — | — | NNE 6 | — | — | WSW 13 | — | — |
— | — | — | — | 34 | — | 73 | — | — | — | — | — | — | — | 20 | — | — | 2469 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 88 | 41 | 97 | 29 | 41 | 97 | 105 | 5 | 88 | 3 | 3 | 5 | 3 | 3 | 8 | 5 | 0 | 28 | 28 | 0 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










