Surf Forecasts:
Sixtynine surf forecast from 1 Sep 2026:
- Best quality surf: Sunday 6 Sep, 2AM (local time) - 2.5ft (0.8m), 11s period, SW swell with glassy winds.
- Most powerful swell: Sunday 6 Sep, 11AM (local time) - 3ft (0.9m), 11s period, SW swell with 205 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 2AM (local time) - 2.5ft (0.8m), 11s 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 Sunday (Sep 06) at 2AM. The primary swell is predicted to be 0.8m and 11s 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 0.9m 11s and forecast to arrive on Sunday (Sep 06) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Wednesday (Sep 02) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 6th Sep) | 2.5ft (0.8m) 11s |
| Best Surf | 2AM (Sun 6th Sep) | 2.5ft (0.8m) 11s |
| Most Powerful | 11AM (Sun 6th Sep) | 3ft (0.9m) 11s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
Alright, let’s get this straight. I’m looking at Sixtynine, and the outlook is grim. There’s nearly nothing to get excited about for the next 16 days. The first week is a total write-off. We’re talking barely a ripple through the 1st, 2nd, 3rd, 4th, and 5th of September. The wind is all over the place – cross, cross-off, glassy at times – but the swell is just not there. It’s all flat, tiny dribbles, or a complete zero. The only real glimmer comes on the afternoon of Sunday the 6th. That’s where we see a 3ft WSW groundswell, period around 11 seconds, wrapping in with a combined energy of 205 (moderate). The wind goes glassy in the arvo, and the report says “surfable waves but very ordinary conditions.” That’s as good as it gets. For a break that’s fairly exposed to that WNW optimum, it’s a shame the direction is a bit off. The water temp is about average for the time of year, nothing weird.
Monday the 7th and Tuesday the 8th are a mess with onshore wind, but Tuesday afternoon the 8th you get a glassy window and a similar 3ft WSW swell (183 energy). Same story: ordinary, but surfable. Wednesday the 9th has a bigger 3ft WSW swell (224 energy) and clean conditions in the arvo with a solid 16 mph cross-offshore breeze from the NE. That’s the best combo of the whole run – a bit of push, clean face, but it’s still just a small wave. After that, it trails off into tiny, weak swells with periods all over the shop, including a very long 16-second period on the 11th that’s basically a 1ft nothing, and a 18-second period on the 16th with barely any energy (84). The whole middle of the second week is a flat, hopeless gap. Honestly, if you’re desperate, the afternoon of the 9th is your best bet. It’s a small, clean wave for an intermediate surfer, but don’t expect any standouts. This is a lean run.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Tue afternoon, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Sun morning, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 12 | W 12 | NNE 6 | W 11 | W 11 | W 10 | W 10 | SW 13 | W 9 | NE 6 | S 11 | NE 6 | SSW 11 | SW 11 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 12 | 11 | 0 | 10 | 9 | 8 | 8 | 7 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 168 | 205 | 205 | 176 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | glassy | glassy | on | glassy | glassy |
High Tide | 7:06AM0.60m | 6:23PM0.39m | 8:06AM0.61m | 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 | |||||||
Low Tide | 00:12AM-0.02m | 1:23PM0.19m | 00:44AM-0.01m | 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 | |||||||
 |  | | |  | | | | |  | | | | | | | | | | |
 | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:38 | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 28 | 29 | 27 | 29 | 28 | 26 | 28 | 28 | 25 | 27 | 28 | 26 | 28 | 28 | 27 | 29 | 28 | 27 |
Feels °C | 28 | 29 | 30 | 31 | 32 | 30 | 28 | 29 | 29 | 26 | 28 | 30 | 27 | 30 | 31 | 32 | 32 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | NNE 8 | ENE 8 | NNE 6 | NNE 8 | NE 8 | NE 7 | SSW 15 | S 14 | S 14 | NE 6 | NE 6 | NE 6 | NE 6 | SW 11 | NE 6 | SW 11 | SW 11 | SW 11 | SW 11 |
| kJ | 101 | 26 | 56 | 109 | 125 | 107 | 42 | 16 | 16 | 58 | 64 | 75 | 32 | 130 | 59 | 168 | 205 | 205 | 176 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 18 | NE 8 | SSW 16 | SSW 16 | SSW 15 | W 10 | W 9 | W 9 | SSW 13 | S 11 | SSW 10 | SSW 11 | NNE 6 | SW 12 | NNE 7 | NNE 8 | NNE 6 | ENE 12 |
| kJ | 21 | 31 | 30 | 51 | 50 | 45 | 8 | 2 | 2 | 57 | 66 | 62 | 105 | 35 | 158 | 41 | 51 | 35 | 111 |
Swell 3 Height (m) Direction Period (s) | W 12 | W 12 | SSW 18 | W 11 | W 11 | W 10 | SW 13 | SW 13 | E 12 | E 14 | E 13 | E 13 | ENE 13 | ENE 12 | ENE 11 | E 13 | E 12 | ENE 12 | N 6 |
| kJ | 12 | 11 | 31 | 10 | 9 | 8 | 7 | 7 | 3 | 4 | 14 | 14 | 33 | 51 | 22 | 87 | 80 | 83 | 19 |
Wind waves Height (m) Direction Period (s) | — | NNE 7 | — | — | — | — | NE 7 | NE 7 | NE 7 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 59 | — | — | — | — | 89 | 77 | 100 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 29 | 88 | 94 | 29 | 97 | 29 | 29 | 94 | 29 | 29 | 97 | 29 | 5 | 5 | 3 | 0 | 8 | 0 | 0 |
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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