Surf Forecasts:
Sixtynine surf forecast from 21 Jul 2026:
- Most powerful swell: Monday 20 Jul, 11PM (local time) - 0.5ft (0.2m), 12s period, WNW swell with 13 kJ wave energy.
Best Forecast Surf Conditions for Sixtynine this week:
The most powerful waves expected at Sixtynine in the next 16 days are 0.2m 12s and forecast to arrive on Monday (Jul 20) at 11PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 8s period and expected on Saturday (Jul 25) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Mon 20th Jul) | 0.5ft (0.2m) 12s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
Alright, let me level with you. Looking at this whole 16-day window... it is going to be a tough stretch for a proper surf around here.
The first glimmer of anything rideable comes on Monday afternoon, July 20th. Even then, it's only a tiny 0.7ft swell out of the WNW, with a 12-second period. The combined energy is weak (13). The water's sitting at a warm 80°, which is pretty much bang on average for this time of year.
Sixtynine – that's the only break we've got to work with. It's a fairly exposed spot, suited for intermediate surfers, and it's consistent. But honest to god, looking at the whole run, there's nothing that really gets me excited. We are looking at a massive dry spell.
From Tuesday July 21st right through to the end of the month, it's just flat. Wednesday morning the 22nd is glassy as a mirror, but there's no swell to ride. Cross-shore winds, some glassy patches, but zero waves. It's heartbreaking. That run of nothing stretches for over a week.
We finally see a pulse again on Monday July 27th, but it's a measly 0.3ft from the SW, with period dropping from 10 seconds to just 7. The combined energy is a pathetic 2 to 4. That's not surf; that's a lake ripple.
Things get a little more interesting right at the tail end. On Monday morning August 3rd, we get a swell of 1.0ft out of the WNW with an 11-second period, energy hitting 40 (weak but the best we see). The wind is light offshore from the NW, a bit unknown, but the afternoon glass-off looks promising again. That same WNW swell sticks around into Tuesday August 4th with similar small conditions.
Look, if you're desperate for a splash on a foamie, maybe that first Monday afternoon (July 20th) or the very end of the window (August 3rd and 4th) might give you a few knee-high wobblers. But there is no standout session here. The consistency is high, but the swell just isn't showing up. It's a blank run, plain and simple.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Warm (max 28°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Thu afternoon, min 24°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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 | W 11 | NE 7 | SSW 26 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | NNE 7 | NE 8 | NNE 8 | NNE 8 | SSW 18 | NNE 8 | NNE 8 | NNE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 13 | 13 | 9 | 0 | 0 | 0 | 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 | glassy | glassy | on | glassy | cross-off | cross | glassy | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross-on | cross | cross-off | cross | cross | cross-off |
High Tide | 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 | 2:52PM0.72m | 2:37AM0.22m | |||||||
Low Tide | 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 | 7:09AM0.01m | 10:16PM0.09m | |||||||
 |  | |  |  |  | | | | | | | | | | | | | | | |
 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — |
 | 7:04 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — | — | 7:01 | — |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 28 | 27 | 26 | 28 | 28 | 25 | 28 | 28 | 25 | 27 | 28 | 26 | 28 | 28 | 25 | 27 | 27 | 25 |
Feels °C | 30 | 29 | 30 | 30 | 30 | 30 | 30 | 27 | 28 | 30 | 27 | 27 | 27 | 27 | 28 | 28 | 26 | 27 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NE 7 | NE 5 | NNE 7 | NE 6 | NE 6 | NE 6 | NE 7 | NNE 7 | SSW 20 | NNE 8 | SSW 18 | NNE 8 | SSW 16 | NNE 8 | NNE 8 |
| kJ | 66 | 42 | 31 | 54 | 38 | 12 | 42 | 18 | 33 | 64 | 43 | 49 | 78 | 76 | 106 | 102 | 100 | 86 | 119 | 95 |
Swell 2 Height (m) Direction Period (s) | WNW 12 | WNW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 24 | SSW 23 | NE 5 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | S 11 | SSW 18 | E 16 | SSW 16 | ENE 16 |
| kJ | 13 | 13 | 14 | 14 | 13 | 55 | 106 | 7 | 78 | 75 | 66 | 61 | 59 | 25 | 51 | 10 | 102 | 46 | 84 | 80 |
Swell 3 Height (m) Direction Period (s) | SSW 10 | SSW 13 | W 11 | SSW 16 | SSW 26 | SSW 16 | SSW 18 | SSW 22 | SSW 16 | SSW 16 | SSW 17 | SSW 13 | SSW 21 | SSW 17 | SSW 20 | E 17 | E 17 | S 10 | E 16 | SSW 16 |
| kJ | 11 | 17 | 9 | 26 | 65 | 25 | 30 | 91 | 25 | 25 | 30 | 16 | 45 | 27 | 37 | 23 | 22 | 2 | 45 | 48 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNE 5 | — | — | — | — | — | — | — | NE 8 | — | NNE 8 | — | NNE 8 | — | — |
| kJ | — | — | — | — | — | 15 | — | — | — | — | — | — | — | 84 | — | 136 | — | 126 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 94 | 38 | 92 | 97 | 5 | 5 | 94 | 82 | 94 | 88 | 38 | 88 | 88 | 29 | 88 | 46 | 42 | 38 | 29 | 38 |
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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