
Surf Forecasts:
Sixtynine surf forecast from 29 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 1.1m 7s period and expected on Saturday (Aug 01) at 2PM.
| 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
G’day, I’m Rusty. So, here’s the deal for the next 16 days at Sixtynine – and straight up, it’s a rough run. Most of the time, there’s just not enough swell to get excited about, and when there is a little bump, it’s small and weak. There’s a long gap from the start all the way through to the end of July and into early August with nothing worth paddling out for. The first real sign of any surfable energy doesn’t show up until Thursday afternoon, 30 July.
On Thursday arvo, 30 July, a tiny 1.0ft SW groundswell rolls in with a very long period of 18 seconds, but only 51 (combined energy) – that’s weak. The wind goes glassy, so it’ll be clean, but the swell is so small and the period so long that it’ll be fat and straight-breaking at a beach break. Not really a surfer’s friend.
Friday 31 July is a write-off – a tiny 0.7ft N windswell, short 9-second period, and cross-onshore winds just make it messy.
The weekend of 1-2 August is flat or near-flat. Sunday 2 August manages a 1.0ft N swell with 10-second period, but it’s cross-shore wind and the energy is only 16. Not worth the wetsuit.
Monday 3 August back to nothing.
There’s a tiny pulse from Tuesday 4 August: a 0.7ft W swell, 11-second period, glassy morning – but the energy is just 9. Barely a ripple.
From Wednesday 5 August through the rest of the first week, the swell stays tiny, 1.0ft to 1ft, mostly from the west or WNW, with periods creeping up to 12-14 seconds. The combined energy starts to climb – 28, 32, 65, then 110 by Saturday 8 August morning. That’s moderate energy (110) with a 2ft W swell at 12 seconds. The wind is cross-shore, light, so the waves won’t be chopped, but it’s still small. This is probably the best window in the whole outlook: Saturday 8 August, with that 2ft W swell, moderate energy, and light cross-shore breeze. It’s not a standout by any stretch, but it’s the biggest and most energetic we get.
Sunday 9 August afternoon sees a 2ft W swell, 13-second period, and glassy conditions – the wave comment finally says “surfable” but rates it ordinary. The energy is 78.
Monday 10 August afternoon has a similar 2ft W swell, 12-second period, with a clean cross-offshore breeze – also rated as surfable but ordinary. The energy is 71.
The rest of the second week, from 11 August onward, fades back to tiny 1.0-1ft WNW swells with low energy, poor conditions, and mostly flat spells. Nothing to chase.
The water temperature at the start of the period is 80° – that’s about 1° warmer than normal, so nothing unusual.
Honestly, for the whole 16 days, nothing is a true standout. If you’re desperate, Saturday 8 August offers the best chance of a tiny, clean wave with moderate energy, but it’s small, cross-shore, and for beginners the 2ft is fine. There’s no real size or punch. Keep your eye on the longer-range forecasts, because it can’t stay this flat forever.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Tue afternoon, min 25°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Fri afternoon, min 24°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | ||||||||||||||
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) | ENE 12 | NE 10 | NNE 9 | NNE 8 | NNE 8 | SSW 18 | SW 18 | SW 16 | N 9 | N 9 | N 8 | NE 7 | NE 7 | N 10 | N 10 | N 9 | N 8 | NNE 6 | NNE 6 | W 12 |
Wave Graph | ||||||||||||||||||||
0 | 0 | 0 | 0 | 0 | 0 | 49 | 41 | 6 | 6 | 5 | 0 | 0 | 9 | 16 | 14 | 12 | 0 | 0 | 11 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | glassy | glassy | on | glassy | cross-off | cross-on | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross-on | on | glassy |
High Tide | 3:59PM0.76m | 3:54AM0.27m | 4:30PM0.76m | 4:33AM0.31m | 4:59PM0.74m | 5:14AM0.34m | 5:28PM0.71m | 5:58AM0.38m | 5:56PM0.66m | 6:46AM0.42m | 6:25PM0.59m | 7:40AM0.47m | 6:56PM0.51m | |||||||
Low Tide | 11:05PM0.06m | 9:17AM-0.02m | 11:30PM0.05m | 9:55AM-0.00m | 11:55PM0.04m | 10:35AM0.03m | 00:20AM0.03m | 11:18AM0.08m | 00:46AM0.02m | 12:07PM0.14m | 1:13AM0.01m | 1:09PM0.20m | 1:44AM-0.00m | |||||||
— | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | |
7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:59 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 30 | 27 | 28 | 29 | 27 | 27 | 28 | 26 | 29 | 28 | 25 | 28 | 28 | 26 | 28 | 28 | 25 | 28 | 29 | 26 |
Feels °C | 31 | 30 | 31 | 32 | 31 | 30 | 31 | 29 | 30 | 29 | 24 | 28 | 30 | 28 | 28 | 29 | 27 | 29 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | NNE 9 | NE 10 | NNE 9 | NNE 8 | NNE 8 | N 7 | SW 18 | NE 6 | NE 6 | NE 6 | SW 15 | NE 7 | NE 7 | SW 14 | NE 8 | NE 8 | NNE 6 | NNE 6 | NNE 6 | NNE 6 |
106 | 138 | 119 | 94 | 58 | 24 | 49 | 49 | 64 | 64 | 55 | 102 | 132 | 46 | 132 | 142 | 44 | 33 | 33 | 29 | |
Swell 2 Height (m) Direction Period (s) | ENE 12 | N 9 | SSW 14 | SSW 13 | ENE 7 | ENE 7 | SSW 12 | SW 16 | SW 16 | SW 15 | ENE 8 | SW 14 | SW 14 | N 10 | N 10 | NNE 7 | NE 8 | NE 8 | NE 8 | ENE 12 |
156 | 42 | 36 | 34 | 32 | 21 | 14 | 41 | 65 | 60 | 14 | 49 | 46 | 9 | 16 | 17 | 34 | 32 | 17 | 82 | |
Swell 3 Height (m) Direction Period (s) | NE 14 | SSW 14 | ENE 9 | ENE 8 | SSW 13 | SSW 18 | N 10 | SSW 12 | N 9 | N 9 | N 8 | E 14 | E 14 | E 15 | SSW 13 | N 9 | N 8 | ENE 13 | ENE 13 | W 12 |
100 | 37 | 8 | 7 | 31 | 31 | 2 | 15 | 6 | 6 | 5 | 4 | 4 | 17 | 17 | 14 | 12 | 18 | 35 | 11 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NE 7 | — | — | — | NE 6 | — | — | NE 8 | — | — | — | — | — | — |
— | — | — | — | — | — | 75 | — | — | — | 52 | — | — | 128 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 38 | 38 | 88 | 41 | 46 | 84 | 84 | 29 | 94 | 29 | 29 | 88 | 88 | 29 | 88 | 57 | 29 | 88 | 88 | 75 |
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.










