Surf Forecasts:
Sixtynine surf forecast from 17 Jul 2026:
- Best quality surf: Friday 17 Jul, 5PM (local time) - 2ft (0.6m), 14s period, W swell with glassy winds.
- Most powerful swell: Friday 17 Jul, 2PM (local time) - 2ft (0.6m), 14s period, W swell with 148 kJ wave energy.
- Next surfable swell (1★+): Friday 17 Jul, 5PM (local time) - 2ft (0.6m), 14s period with W 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 Friday (Jul 17) at 5PM. The primary swell is predicted to be 0.6m and 14s 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 0.6m 14s and forecast to arrive on Friday (Jul 17) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 7s period and expected on Saturday (Jul 18) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Fri 17th Jul) | 2ft (0.6m) 14s |
| Best Surf | 5PM (Fri 17th Jul) | 2ft (0.6m) 14s |
| Most Powerful | 2PM (Fri 17th Jul) | 2ft (0.6m) 14s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s on the menu for Sixtynine. I’ll be honest, it’s a bit of a lean spell, so temper your expectations.
We start on Friday 17th July with a tiny pulse. A 2ft W swell, with a 14-second period. That’s a long-period groundswell, which means it’ll have some punch, but the size is barely a ripple. The wave energy is moderate (203). Friday morning has a light cross-on N wind, not ideal, but Friday afternoon goes glassy. The water is a warm 80°, which is about normal for the time of year. It’s rideable, but nothing to write home about.
Saturday 18th July drops to a 2ft W swell, with weak energy (89). The wind is messy. Sunday is even smaller, with a 1ft WNW swell (50). It’s basically a flat spell.
Then we hit a real dead zone. From Monday 21st July through Thursday 30th July, there is absolutely no swell. Ten days of nothing. The wind is light, but without waves, it doesn’t matter.
The first sign of life comes on Friday 31st July. A 1ft WNW swell appears in the morning, with a very long 16-second period. The energy is still weak (83). The wind is light cross-on. By Friday afternoon, it picks up to 2ft from the W with a 14-second period, and the energy bumps to moderate (103). The wind goes glassy, so the surface will be perfect. It’s still very ordinary surf.
The best of a bad lot is Saturday 1st August afternoon. A 2ft W swell (14-second period, 134 energy) with glassy WNW wind. That could give you a few fun, clean little waves. The crowd is only “sometimes” at Sixtynine, so it won’t be busy.
This is not a standout period. The two best windows are Friday 31st July afternoon and Saturday 1st August afternoon, due to the glassy conditions and the slightly bigger swell. But even then, you’re looking at waist-high waves at best. Beginners will be fine, but experts will be bored. For a spot that’s fairly exposed to that WNW direction, it’s a frustrating wait.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Fri morning, min 24°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 28°C on Mon morning, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||
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) | W 14 | W 14 | W 14 | W 13 | W 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | W 11 | NNE 7 | SSW 26 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 203 | 146 | 138 | 89 | 87 | 57 | 50 | 29 | 29 | 27 | 13 | 13 | 9 | 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 | glassy | cross-off | cross | cross-off | cross-off | cross | glassy | glassy | on | glassy | cross-off | cross-on | glassy | glassy | cross | glassy | cross-off | cross | cross | cross-off |
High Tide | 6:36PM0.70m | 7:32AM0.39m | 7:10PM0.61m | 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 | ||||||||
Low Tide | 11:47AM0.06m | 1:35AM0.00m | 12:43PM0.14m | 2:07AM0.01m | 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 | ||||||||
 | |  |  | | | | | | | | | | |  | | |  | | | | |
 | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — |
 | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 29 | 29 | 27 | 28 | 28 | 25 | 28 | 28 | 25 | 28 | 27 | 26 | 28 | 28 | 26 | 27 | 27 | 25 | 27 | 27 | 25 |
Feels °C | 31 | 32 | 30 | 30 | 29 | 26 | 30 | 30 | 28 | 30 | 29 | 29 | 30 | 30 | 30 | 28 | 30 | 28 | 29 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NNE 7 | NNE 6 | NNE 5 | NNE 8 | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NE 6 | NNE 5 | NNE 5 | NE 6 | NE 7 |
| kJ | 47 | 76 | 57 | 51 | 93 | 61 | 34 | 15 | 54 | 56 | 54 | 42 | 31 | 30 | 37 | 38 | 32 | 15 | 15 | 68 | 36 |
Swell 2 Height (m) Direction Period (s) | W 14 | W 14 | W 14 | W 13 | W 13 | WNW 13 | WNW 12 | NNE 6 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | SSW 12 | ENE 5 | SSW 12 | SSW 24 | NE 7 | SSW 22 | SSW 20 | SSW 20 | SSW 18 |
| kJ | 203 | 146 | 138 | 89 | 87 | 57 | 50 | 26 | 29 | 27 | 13 | 13 | 14 | 2 | 13 | 55 | 7 | 91 | 78 | 75 | 66 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SW 12 | SSW 15 | NNE 8 | S 12 | SSW 12 | ENE 8 | WNW 12 | ENE 7 | SSW 11 | SSW 10 | SSW 13 | W 11 | SSW 12 | SSW 26 | SSW 16 | SSW 23 | SSW 17 | SSW 16 | SSW 16 | SW 17 |
| kJ | 25 | 21 | 21 | 21 | 3 | 14 | 6 | 29 | 5 | 11 | 11 | 17 | 9 | 14 | 65 | 24 | 106 | 58 | 50 | 25 | 77 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 0 | 0 | 5 | 0 | 5 | 94 | 94 | 38 | 88 | 57 | 38 | 92 | 46 | 5 | 5 | 94 | 38 | 94 | 43 | 5 |
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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