
Surf Forecasts:
Sixtynine surf forecast from 3 Aug 2026:
- Most powerful swell: Monday 10 Aug, 2AM (local time) - 1.5ft (0.4m), 12s period, W swell with 44 kJ wave energy.
Best Forecast Surf Conditions for Sixtynine this week:
The most powerful waves expected at Sixtynine in the next 16 days are 0.4m 12s and forecast to arrive on Monday (Aug 10) at 2AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Sunday (Aug 09) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Mon 10th Aug) | 1.5ft (0.4m) 12s |
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 cooking at Sixtynine.
Well, I gotta be straight with you – the next week and a half is looking pretty grim. The swell is tiny, and for the first several days, it's all showing as poor surf conditions. We're looking at a real flat spell from now until at least the 8th of August. The wave heights are struggling to get past 1.0ft, with periods mostly under 13 seconds. The combined swell energy is in the weak zone, barely registering (15). You'd be lucky to find a ripple. The water temp is sitting at 81°, which is pretty normal for this time of year, so at least a dip will be warm.
Now, there's a glimmer of hope, but you've got to be patient. From around Monday the 10th of August, we start to see a pulse of energy. The swell height bumps up to 2ft, with a period of 13 seconds from the west, and the combined energy climbs to a moderate 79. It's still only surfable in very ordinary conditions, but it's something.
The real standout, the only session worth circling on the calendar, looks to be Tuesday the 11th of August. We've got a glimmer of glassy conditions in the afternoon, with a 2ft swell from the west, a period stretching to 15 seconds – that's a proper groundswell. The combined energy hits 155 (moderate). The offshore wind direction is WNW, which is close to the optimum of WNW for this spot. It's a consistent break, so it should be working. That's your best wave this whole forecast. Don't expect a classic, but it's the only one.
The middle of the month (14th–17th) keeps the swell around 2ft, with periods of 14–15 seconds. The energy stays in the moderate range (195–296). The issue is the wind. It's mostly cross or cross-off from the NNE, which is a bit messy. The morning of Saturday the 15th has a moderate cross-chop that'll make it ugly. The afternoons look cleaner, but still small. This is not a run of waves that's going to set the world on fire – it's small, inconsistent energy, and the best days are still a week and a half away.
For a beginner, anything under 5ft is fine, but the poor quality and lack of power means it's not a great learning day either. For the experienced surfer, you're waiting for that 11th, and maybe a sneaky session on the 14th if the wind plays nice.
Honestly, for the next week, I'd be checking the wind for a kite session. The waves just aren't there for a paddle.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 24°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Thu morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | ||||||||||||||
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) | N 9 | W 11 | W 12 | W 12 | W 11 | W 11 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | SSW 14 | W 12 | W 12 | NE 8 | SSW 18 | NE 6 | NE 7 |
Wave Graph | |||||||||||||||||||
6 | 10 | 10 | 11 | 9 | 10 | 13 | 28 | 11 | 11 | 11 | 12 | 0 | 11 | 11 | 0 | 0 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | glassy | glassy | on | cross-on | glassy | on | glassy | cross-off | cross | glassy | cross-off | cross-on | cross | glassy | cross | cross-off | glassy |
High Tide | 7:40AM0.47m | 6:56PM0.51m | 8:43AM0.52m | 7:30PM0.41m | 9:54AM0.57m | 8:12PM0.32m | 11:08AM0.63m | 9:29PM0.23m | 12:16PM0.69m | 11:28PM0.19m | 1:16PM0.76m | 1:00AM0.19m | |||||||
Low Tide | 1:13AM0.01m | 1:09PM0.20m | 1:44AM-0.00m | 2:34PM0.25m | 2:20AM-0.00m | 4:37PM0.27m | 3:05AM-0.01m | 6:57PM0.22m | 4:04AM-0.01m | 8:13PM0.15m | 5:14AM-0.02m | 8:57PM0.09m | |||||||
— | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | |
6:59 | — | 6:59 | — | — | 6:58 | — | — | 6:58 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 29 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 27 |
Feels °C | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 31 | 30 | 30 | 31 | 30 | 30 | 30 | 28 | 29 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | NNE 6 | N 6 | NNE 6 | N 6 | ENE 11 | NNE 6 | NNE 5 | NE 9 | NE 9 | NNE 4 | NE 5 | NE 5 | NNE 4 | NE 4 | NE 6 | NNE 5 | NE 6 | NE 9 | NE 7 |
35 | 20 | 18 | 18 | 47 | 12 | 9 | 22 | 21 | 8 | 11 | 22 | 7 | 10 | 60 | 19 | 26 | 12 | 54 | |
Swell 2 Height (m) Direction Period (s) | NE 8 | NE 8 | NE 8 | ENE 11 | NNE 6 | ENE 11 | ENE 10 | NNE 5 | W 12 | NE 8 | NE 8 | NE 8 | NE 7 | NE 9 | W 12 | NE 8 | NE 10 | SSW 18 | SSW 18 |
31 | 30 | 17 | 48 | 11 | 46 | 38 | 5 | 11 | 18 | 10 | 9 | 9 | 14 | 11 | 16 | 15 | 31 | 30 | |
Swell 3 Height (m) Direction Period (s) | N 9 | W 11 | W 12 | W 12 | W 11 | W 11 | W 13 | W 13 | NNE 9 | W 12 | W 12 | W 12 | SSW 14 | W 12 | SSW 13 | SSW 13 | SSW 18 | SSW 13 | SSW 13 |
6 | 10 | 10 | 11 | 9 | 10 | 13 | 28 | 8 | 11 | 11 | 12 | 20 | 11 | 18 | 17 | 32 | 17 | 17 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NE 4 | — | — | — | — | — | — | — | — | NE 6 | — |
— | — | — | — | — | — | — | — | 9 | — | — | — | — | — | — | — | — | 47 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 38 | 88 | 88 | 31 | 31 | 88 | 31 | 88 | 88 | 42 | 46 | 88 | 38 | 88 | 88 | 84 | 88 | 38 | 38 |
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)
Latest Updates
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.











