Surf Forecasts:
Sixtynine surf forecast from 25 Jul 2026:
- Most powerful swell: Thursday 30 Jul, 2PM (local time) - 1ft (0.3m), 18s period, SW swell with 49 kJ wave energy.
Best Forecast Surf Conditions for Sixtynine this week:
The most powerful waves expected at Sixtynine in the next 16 days are 0.3m 18s and forecast to arrive on Thursday (Jul 30) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 10s period and expected on Wednesday (Jul 29) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Thu 30th Jul) | 1ft (0.3m) 18s |
Table - best surf conditions forecast for Sixtynine over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's be straight with you – this is a tough stretch for Sixtynine. We're looking at a long, dry spell right through the end of July and into the first week of August. Don't expect to get wet until we get into the second week of August.
Right now, from July 25th all the way through August 3rd, it's a flat, blank canvas. Not a single wave worth paddling for. The water temp is sitting at a warm 80°, which is about 1° warmer than usual for this time of year, but you won't be feeling it without a surfable wave. It's a hard go.
The first hint of life finally shows up on Thursday, July 30th. We get a tiny pulse of 1 ft swell out of the southwest, with a long period of 18 seconds – classic groundswell energy. The combined energy is weak (49). It’s small, but the wind is light cross-shore that morning, so it might be just about rideable for a log on the glassy patches.
The action picks up a bit from August 8th into the 9th. Saturday the 8th sees the swell start to build, with 2 ft to 2 ft of west swell. The period drops to 13-14 seconds, but the combined energy jumps into the moderate range (130 on Saturday afternoon). The winds stay light and variable, tending cross-shore.
But the real standout in this otherwise bleak window is Sunday, August 9th. We’ve got 2 ft of west swell, but what gets me excited is the 14-second period and the combined energy hitting a solid 181 – that's a proper pulse of energy for this spot. The wind is a gentle cross-off breeze in the afternoon, which will clean those lines right up. For a break that's fairly exposed to WNW swells, this west direction is a good match. It could be a fun session for the intermediate crew.
That swell on August 9th is your best bet. It won't be huge, but it'll have some push and the conditions are looking clean. Crowds are "sometimes" a problem here, so you might have a few mates out, but on that Sunday afternoon with clean conditions, it'll be worth the paddle. Just be aware, after that, the forecast gets hazy again.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sat morning, min 24°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 29°C on Tue afternoon, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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) | NNE 8 | NNE 8 | SW 14 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 9 | ENE 13 | ENE 13 | NE 10 | NNE 9 | NE 9 | SW 19 | NE 7 | SW 18 | SW 16 | SW 16 | N 8 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 0 | 49 | 42 | 40 | 13 | 34 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | glassy | cross-off | cross | cross | cross | cross | cross | cross-on | on | on | glassy | on | cross | cross-off | cross | cross | cross-off |
High Tide | 2:14PM0.70m | 1:52AM0.20m | 2:52PM0.72m | 2:37AM0.22m | 3:27PM0.74m | 3:16AM0.24m | 3:59PM0.76m | 3:54AM0.27m | 4:30PM0.76m | 4:33AM0.31m | 4:59PM0.74m | 5:14AM0.34m | 5:28PM0.71m | ||||||||
Low Tide | 9:52PM0.11m | 7:09AM0.01m | 10:16PM0.09m | 7:56AM-0.01m | 10:41PM0.08m | 8:38AM-0.02m | 11:05PM0.06m | 9:17AM-0.02m | 11:30PM0.05m | 9:55AM-0.00m | 11:55PM0.04m | 10:35AM0.03m | 00:20AM0.03m | ||||||||
 | |  | | | | |  |  | | | | |  | | | | | | | | |
 | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 7:02 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 26 | 27 | 28 | 25 | 28 | 28 | 26 | 28 | 29 | 28 | 28 | 28 | 27 | 27 | 28 | 26 | 28 | 28 | 26 |
Feels °C | 30 | 30 | 27 | 28 | 30 | 27 | 29 | 28 | 27 | 29 | 30 | 32 | 31 | 32 | 31 | 31 | 31 | 28 | 30 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NE 10 | NNE 9 | ENE 13 | ENE 13 | NE 10 | NNE 9 | N 7 | NE 8 | NE 7 | NE 7 | NE 6 | NE 6 | SW 15 | NE 8 |
| kJ | 123 | 162 | 126 | 123 | 120 | 91 | 93 | 27 | 124 | 187 | 317 | 420 | 162 | 37 | 94 | 71 | 112 | 68 | 62 | 60 | 17 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | ENE 13 | ENE 13 | SSW 14 | SSW 14 | SSW 14 | NE 10 | NE 9 | SSW 13 | SSW 18 | SW 18 | SW 16 | SW 16 | N 8 | SW 15 |
| kJ | 51 | 102 | 60 | 86 | 84 | 48 | 42 | 34 | 60 | 37 | 39 | 37 | 46 | 38 | 31 | 31 | 49 | 42 | 40 | 13 | 34 |
Swell 3 Height (m) Direction Period (s) | SSW 20 | S 11 | SW 14 | E 14 | E 15 | E 14 | E 13 | SSW 14 | SSW 14 | — | — | — | SSW 14 | SSW 13 | SW 19 | SSW 12 | SSW 12 | SSW 12 | N 9 | S 12 | NNE 6 |
| kJ | 37 | 10 | 8 | 16 | 17 | 16 | 30 | 41 | 41 | — | — | — | 36 | 33 | 15 | 14 | 14 | 15 | 14 | 11 | 8 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNE 8 | — | NNE 7 | NNE 8 | — | — | — | — | — | — | — | — | NE 6 | NE 5 |
| kJ | — | — | — | — | — | — | — | 93 | — | 86 | 131 | — | — | — | — | — | — | — | — | 80 | 27 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 29 | 29 | 29 | 94 | 94 | 29 | 41 | 41 | 38 | 42 | 41 | 28 | 31 | 31 | 57 | 84 | 57 | 29 | 94 | 29 | 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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