Surf Forecasts:
Sixtynine surf forecast from 19 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 5AM (local time) - 1.5ft (0.4m), 13s period, WNW swell with 56 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 13s and forecast to arrive on Sunday (Jul 19) 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 1.0m 8s period and expected on Sunday (Jul 26) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Sun 19th Jul) | 1.5ft (0.4m) 13s |
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 on the cards for the coming weeks. It’s a bit of a slow burner, so bear with me.
The overall picture is pretty flat for a long stretch. We’ve got a tiny bit of swell right at the start, but honestly, it’s not worth paddling out for. The wave energy is bottomed out, and the conditions are just poor. We’re looking at a solid gap from Sunday the 19th of July all the way through to the end of the month with virtually nothing rideable. A few glassy moments here and there, but the ocean is flat. It’s one of those quiet spells.
The only real flicker of hope comes right at the tail end of the forecast. The first day of August, Saturday afternoon, we finally see a pulse. The water temp is sitting right around average for this time of year at 80°, so no surprises there.
The standout, and I mean the only real standout, is Sixtynine on Saturday afternoon, the 1st of August. The swell is tiny, only 1 ft coming from the W, but the period stretches out to 16 seconds. That’s a proper groundswell, so there’s more energy in each wave than the height suggests. The combined wave energy is moderate at 77 – not huge, but it’s something. The big ticket here is the wind. It’s glassy with a WNW breeze at just 3 mph. That’s about as clean as it gets. For a wave that’s been dead for two weeks, this is a real treat. The break is consistently exposed to the WNW swell direction, which is a good match. The waves will be small, clean, and lined up, best for a longboard. It’s a solid intermediate wave at this size. The crowd factor is listed as "sometimes", so you might have a few others with the same idea, but it won’t be a circus.
The following morning, Sunday the 2nd of August, the swell drops off again into the poor category, so make the most of that Saturday afternoon window.
Keep your eyes on the forecast; things can change. But for now, that Saturday afternoon is your best bet.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sun morning, min 25°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Wed afternoon, min 23°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | |||||||||||||||
AM | 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) | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | W 11 | NE 7 | SSW 26 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | NE 7 | NE 6 | NNE 8 | NE 8 | SSW 18 | NNE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 50 | 29 | 29 | 27 | 13 | 13 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross-off | cross-on | glassy | cross-off | cross-on | glassy | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross-off | cross-off | cross | glassy | cross-off |
High Tide | 8:35AM0.44m | 7:42PM0.51m | 9:42AM0.48m | 8:14PM0.41m | 10:49AM0.54m | 8:47PM0.32m | 11:51AM0.59m | 9:44PM0.25m | 12:45PM0.63m | 11:28PM0.20m | 1:32PM0.66m | 00:54AM0.19m | 2:14PM0.70m | 1:52AM0.20m | |||||||
Low Tide | 1:51PM0.22m | 2:39AM0.02m | 3:21PM0.28m | 3:12AM0.03m | 5:30PM0.29m | 3:48AM0.04m | 7:48PM0.24m | 4:32AM0.04m | 8:54PM0.19m | 5:23AM0.04m | 9:26PM0.14m | 6:18AM0.02m | 9:52PM0.11m | ||||||||
 |  |  | | | | | |  | | | | | | | | | | | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — |
 | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 27 | 26 | 27 | 28 | 26 | 27 | 28 | 25 | 28 | 27 | 25 | 27 | 28 | 25 |
Feels °C | 29 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 27 | 30 | 25 | 27 | 27 | 25 | 26 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | WNW 12 | NNE 6 | NE 8 | NNE 8 | NNE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NNE 6 | NE 7 | NE 6 | NNE 8 | NE 8 | NNE 8 | NNE 8 |
| kJ | 50 | 41 | 57 | 50 | 68 | 49 | 54 | 52 | 50 | 12 | 31 | 24 | 24 | 58 | 23 | 54 | 54 | 72 | 84 | 101 | 95 |
Swell 2 Height (m) Direction Period (s) | SW 11 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 20 | SSW 16 | SSW 18 | SSW 18 |
| kJ | 5 | 29 | 29 | 27 | 13 | 13 | 13 | 14 | 13 | 55 | 106 | 91 | 78 | 75 | 66 | 61 | 59 | 76 | 51 | 102 | 60 |
Swell 3 Height (m) Direction Period (s) | SW 20 | NE 5 | SSW 12 | ENE 7 | SSW 10 | SSW 16 | W 11 | SSW 16 | SSW 26 | SSW 16 | NNE 7 | SSW 17 | SSW 16 | SSW 16 | SSW 17 | SSW 14 | SSW 21 | SSW 16 | SSW 20 | S 9 | E 15 |
| kJ | 16 | 6 | 13 | 5 | 11 | 26 | 9 | 26 | 65 | 25 | 5 | 29 | 25 | 25 | 30 | 19 | 45 | 25 | 37 | 7 | 18 |
Wind waves Height (m) Direction Period (s) | NNE 7 | — | — | — | — | — | — | — | — | NNE 5 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 66 | — | — | — | — | — | — | — | — | 16 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 94 | 38 | 92 | 94 | 38 | 88 | 88 | 5 | 5 | 46 | 42 | 88 | 88 | 38 | 88 | 29 | 38 | 38 | 97 | 29 |
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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