Surf Forecasts:
Hapuna surf forecast from 15 Aug 2026:
- Best quality surf: Sunday 16 Aug, 2AM (local time) - 3ft (0.9m), 10s period, SSW swell with glassy winds.
- Most powerful swell: Sunday 16 Aug, 2AM (local time) - 3ft (0.9m), 10s period, SSW swell with 151 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 2AM (local time) - 3ft (0.9m), 10s period with SSW swell.
Best Forecast Surf Conditions for Hapuna this week:
The surf forecast for Hapuna over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 16) at 2AM. The primary swell is predicted to be 0.9m and 10s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hapuna in the next 16 days are 0.9m 10s and forecast to arrive on Sunday (Aug 16) at 2AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 8s period and expected on Saturday (Aug 15) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 16th Aug) | 3ft (0.9m) 10s |
| Best Surf | 2AM (Sun 16th Aug) | 3ft (0.9m) 10s |
| Most Powerful | 2AM (Sun 16th Aug) | 3ft (0.9m) 10s |
Table - best surf conditions forecast for Hapuna over the next 16 days.
The Lowdown
Hey folks, Rusty with a reality check for Hapuna. I’ve been staring at the charts, and I’m not gonna lie, it’s bleak out there for the next couple of weeks. There’s a whole lot of nothing on offer – a proper flat spell that’s pretty typical for this area when the swell windows just don't align. If you’re looking to get wet, you’ll be waiting a while.
The next several days are a total loss. We’re talking tiny ankle-biters, 0.3m at best, with WNW swell and short, weak periods. The winds are either howling or just making ripples, and even when it goes glassy, there’s no push behind it. The combined energy is weak, only registering in the 20s and 30s. It’s a write-off for the first week.
We get a little tease around the 19th and 20th. The swell direction swings to the southwest and the period stretches out to a nice 16-18 seconds, which is classic groundswell. But here’s the kicker—the height is still a pathetic 0.3m. All that long-period energy with almost no height means it’s just going to be super straight and gutless. Trust me, not worth the paddle.
There’s a very brief window on the 23rd with a glassy afternoon and a 0.4m southwest swell at 15 seconds. Still tiny, but it’s the closest we get to anything that might have a little shape to it. But it’s still a no-go for a proper surf.
After that, the plug gets pulled. After the 26th, the swell readings flatline to zero. The ocean just goes dead. The water temp is about normal for the season, nothing to report there. So there you have it, no good waves in sight for the next 16 days. It’s a real bummer, but that’s the life. Keep your board in the car if you must, but honestly, you’re better off finding something else to do. Forecasts can change, but as it stands, we’re in a flat spell. This is Rusty, signing off.
Short Range ForecastHeavy rain (total 72mm), heaviest during Sat afternoon. Warm (max 29°C on Sat morning, min 26°C on Sat afternoon). Mainly stormy winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Thu afternoon. Warm (max 28°C on Tue morning, min 25°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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 12 | W 14 | W 14 | SSW 10 | SSW 7 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 13 | WNW 13 | WNW 12 | SW 16 | SW 16 | SW 18 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 12 | 16 | 16 | 151 | 32 | 29 | 27 | 25 | 25 | 25 | 25 | 58 | 33 | 48 | 42 | 41 | 49 | 47 | 69 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | glassy | cross-on | glassy | glassy | glassy | cross-off | off | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | cross-off | glassy |
High Tide | 6:01AM0.48m | 5:56PM0.60m | 6:49AM0.51m | 6:24PM0.51m | 7:40AM0.53m | 6:51PM0.41m | 8:37AM0.54m | 7:15PM0.33m | 9:44AM0.55m | 7:33PM0.25m | 10:59AM0.57m | ||||||||
Low Tide | 00:02AM-0.01m | 11:41AM0.09m | 00:29AM0.00m | 12:35PM0.16m | 00:54AM0.02m | 1:40PM0.21m | 1:21AM0.04m | 3:09PM0.25m | 1:51AM0.05m | 5:41PM0.25m | 2:31AM0.07m | 3:32AM0.09m | |||||||
 |  |  |  |  |  | | | |  | | | | | | | | | | |
 | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | 6:52 | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — |
mm | 16 | 3 | 22 | 26 | — | 3 | 1 | — | 1 | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 27 | 29 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 27 | 26 | 27 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 24 | 24 | 22 | 30 | 31 | 32 | 32 | 33 | 33 | 31 | 32 | 31 | 30 | 31 | 32 | 31 | 31 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 13 | NE 8 | NE 8 | NE 8 | NE 7 | NE 6 | NE 6 | NNE 5 | NNE 5 | NNE 5 | NNE 5 | NE 5 | WNW 12 | NNE 6 | NNE 6 | NNE 6 | NNE 7 |
| kJ | 36 | 35 | 35 | 151 | 80 | 77 | 65 | 46 | 51 | 18 | 15 | 17 | 9 | 12 | 28 | 26 | 27 | 16 | 33 |
Swell 2 Height (m) Direction Period (s) | W 12 | W 11 | W 11 | SSW 10 | SSW 7 | SW 6 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 13 | WNW 13 | WNW 12 | SW 16 | WNW 11 | SW 18 | SW 17 | SW 16 |
| kJ | 11 | 9 | 10 | 151 | 30 | 13 | 27 | 25 | 25 | 25 | 25 | 58 | 33 | 48 | 42 | 25 | 49 | 47 | 69 |
Swell 3 Height (m) Direction Period (s) | SW 17 | W 14 | W 14 | ENE 9 | WNW 13 | WNW 12 | SW 5 | S 12 | S 14 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | SSW 16 | NNE 7 | SW 16 | WNW 11 | WNW 11 | W 11 |
| kJ | 12 | 16 | 16 | 47 | 32 | 29 | 4 | 11 | 16 | 6 | 6 | 6 | 5 | 26 | 9 | 41 | 24 | 12 | 9 |
Wind waves Height (m) Direction Period (s) | NE 7 | NE 8 | NE 8 | — | — | — | — | — | — | — | — | — | — | — | NE 5 | — | — | NNE 4 | — |
| kJ | 322 | 532 | 2016 | — | — | — | — | — | — | — | — | — | — | — | 20 | — | — | 12 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 32 | 32 | 45 | 0 | 27 | 29 | 46 | 87 | 87 | 93 | 93 | 87 | 81 | 3 | 3 | 6 | 6 | 91 | 3 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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Information about the Hapuna Surf forecast
The above surf forecast table for Hapuna provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Hapuna can be found by selecting the local surf guide option on the grey menu. Our Hapuna 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 (Hapuna) 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 Hapuna 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.
Hapuna 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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