Surf Forecasts:
Sixtynine surf forecast from 19 Jul 2026:
- Best quality surf: Saturday 18 Jul, 8PM (local time) - 1.5ft (0.5m), 13s period, W swell with cross-offshore winds.
- Most powerful swell: Saturday 18 Jul, 5PM (local time) - 1.5ft (0.5m), 13s period, W swell with 87 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 8PM (local time) - 1.5ft (0.5m), 13s 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 Saturday (Jul 18) at 8PM. The primary swell is predicted to be 0.5m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sixtynine in the next 16 days are 0.5m 13s and forecast to arrive on Saturday (Jul 18) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Saturday (Jul 25) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 18th Jul) | 1.5ft (0.5m) 13s |
| Best Surf | 8PM (Sat 18th Jul) | 1.5ft (0.5m) 13s |
| Most Powerful | 5PM (Sat 18th Jul) | 1.5ft (0.5m) 13s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down the next couple of weeks.
It’s a slow start, no doubt. The first real surf doesn’t show up until Sunday, August 2nd, and even then, it’s the afternoon that delivers. From Saturday, July 18th, all the way through the end of July, it’s mostly flat. The water temperature is 27°, which is normal for the season.
The only break worth mentioning is Sixtynine. It’s a fairly exposed spot that likes a WNW swell, and it’s consistent for intermediates when there’s something to ride.
Saturday, July 18th – Forget it. A tiny 2ft swell from the W with a 13-second period, but the energy is weak (89). Wind is a cross-shore from the NNE at 6 mph. Poor surf.
Sunday, July 19th – Smaller. Morning brings 1ft from the WNW, energy drops to 55. The afternoon goes glassy with a light NW wind at 3 mph, but the swell is only 1ft. Pretty, but weak.
Monday, July 20th through Thursday, July 31st – A dead zone. Almost two weeks of nothing. A few days have a tiny 0.7ft or 0.3ft blip, but energy is in the single digits. Often glassy, but no swell means no surf.
Saturday, August 1st – A little pulse. Afternoon shows a 2ft swell from the W with a 14-second period, energy hits 99. Wind is a moderate cross-shore at 9 mph, so it’s choppy.
Sunday, August 2nd – This is the one. Morning shows a 2ft swell from the W with a very long 16-second period. Energy jumps to 231. Wind is a light cross-shore from the NNE at 6 mph, which is clean enough. But the afternoon… that’s the magic window. The swell holds at 2ft from the W, period drops to 14 seconds, but energy climbs to 322. The wind goes glassy, offshore from the N at just 3 mph. The comment says “expect good surf conditions.” This is the standout. The swell direction (W) matches the optimum (WNW) well. With that long period, it’s a proper groundswell. Keep in mind, a 16-second period can make a beach break a bit too straight, so it’ll be better if there’s a point or reef. The energy is moderate, so it’s not huge, but it’s the best we’ve got after a long wait.
Bottom line: You’ve got a long wait until Sunday, August 2nd. The afternoon is your best shot. Clean, glassy conditions with a 2ft groundswell from the W at Sixtynine. It’s not big, but it’s a real wave after two weeks of nothing.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Sat afternoon, min 24°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Wed morning, min 24°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sat 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||
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 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | NNE 5 | W 11 | SSW 26 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SW 17 | SW 15 | SSW 18 | NNE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 87 | 57 | 50 | 29 | 29 | 27 | 13 | 13 | 0 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 47 | 8 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | glassy | cross-off | on | glassy | cross-off | on | glassy | cross-off | cross-on | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 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 | 1:32PM0.66m | 00:54AM0.19m | |||||||
Low Tide | 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 | 5:23AM0.04m | 9:26PM0.14m | ||||||||
 |  |  | | | | | | | |  | | | | | | | | | | |
 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — |
 | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 27 | 26 | 28 | 28 | 25 | 27 | 27 | 25 | 27 | 27 | 25 |
Feels °C | 31 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 30 | 30 | 29 | 30 | 30 | 27 | 28 | 28 | 26 | 27 | 28 | 25 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NE 7 | NNE 6 | NE 8 | NNE 8 | NNE 7 | NE 7 | NNE 5 | SSW 12 | NE 7 | NNE 7 | NE 6 | NNE 5 | NE 6 | NE 6 | NE 7 | SSW 18 | NNE 6 | NNE 7 |
| kJ | 76 | 59 | 54 | 51 | 57 | 50 | 64 | 49 | 15 | 14 | 50 | 33 | 83 | 19 | 39 | 66 | 46 | 61 | 47 | 78 |
Swell 2 Height (m) Direction Period (s) | W 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | NE 7 | SSW 16 | SSW 12 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | SSW 13 | ENE 7 | SSW 20 |
| kJ | 87 | 57 | 50 | 29 | 29 | 27 | 13 | 13 | 16 | 26 | 13 | 55 | 106 | 91 | 78 | 75 | 66 | 17 | 19 | 38 |
Swell 3 Height (m) Direction Period (s) | NE 8 | SSW 12 | SW 11 | SW 11 | SSW 12 | ENE 7 | SSW 10 | SSW 16 | SSW 12 | W 11 | SSW 26 | SSW 16 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SW 17 | SW 15 | SSW 18 | ENE 8 |
| kJ | 15 | 14 | 5 | 4 | 13 | 5 | 11 | 26 | 13 | 9 | 65 | 25 | 30 | 58 | 25 | 25 | 47 | 8 | 61 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NE 7 | — | — | — | — | — | — | — | NE 7 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 54 | — | — | — | — | — | — | — | 75 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 5 | 3 | 29 | 94 | 94 | 38 | 92 | 94 | 38 | 97 | 88 | 5 | 5 | 105 | 38 | 88 | 88 | 43 | 88 | 88 |
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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