Surf Forecasts:
Hapuna surf forecast from 5 Sep 2026:
- Best quality surf: Monday 7 Sep, 8PM (local time) - 6ft (1.9m), 14s period, WSW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 8PM (local time) - 6ft (1.9m), 14s period, WSW swell with 1,484 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 8PM (local time) - 2.5ft (0.7m), 12s period with SW 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 Saturday (Sep 05) at 8PM. The primary swell is predicted to be 0.7m and 12s 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 1.9m 14s and forecast to arrive on Monday (Sep 07) at 8PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Saturday (Sep 05) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 5th Sep) | 2.5ft (0.7m) 12s |
| Best Surf | 8PM (Mon 7th Sep) | 6ft (1.9m) 14s |
| Most Powerful | 8PM (Mon 7th Sep) | 6ft (1.9m) 14s |
Table - best surf conditions forecast for Hapuna over the next 16 days.
The Lowdown
Alright folks, Rusty here. We’re looking at the next 16 days, and I’ve gotta be straight with you – this is a tough stretch. We’re kicking off on Friday the 4th of September, but there’s really nothing to get excited about for a long while. The first few days are a write-off with no real swell to speak of. The whole first week is a massive gap of flat to tiny, messy conditions. You’ll be waiting until almost the second week before anything even registers.
Let’s get into the only spot on the menu, Hapuna (sandbar).
The water is sitting at 82°F right now, which is about 1°F warmer than usual for this time of year. Nothing too crazy, just a touch on the warm side.
The first real pulse of energy we see comes in on Monday the 7th of September. The morning is still marginal, but by the afternoon, we get a solid 6ft swell coming in from the WSW with a period of 14 seconds. That’s a proper groundswell, and the combined energy hits 1111 (moderate to strong). The problem? The wind is blowing straight onshore from the west at 10 km/h. That’s gonna chop it up and make it a real battle. The size is also pushing past 5ft, so this is getting into intermediate territory, and beginners might find it a handful.
Tuesday the 8th of September hangs in there with a 5ft swell from the W, but again, the wind is cross-onshore or cross, so it’s never going to be clean. The energy is still moderate (667–666), but the quality is just not there. This is hard work for a couple of average waves.
After that, the swell drops off a cliff. From Wednesday the 9th of September all the way through to the end of the forecast, we’re looking at tiny, weak swell. The period gets long – up to 23 seconds on the 14th – but the height is only 0.3ft to 2ft. The combined energy rarely even hits triple digits. There are some glassy, clean conditions in there, like on the afternoon of the 16th of September, but with only 2ft of swell, it’s just flat.
Honestly, the only window that even comes close to being worth a look is the Monday afternoon of the 7th of September, but with that onshore wind, it’s a real gamble. For the rest of it, you’re better off waiting for the next system. The surf is just not cooperating.
This is Rusty, signing off.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun afternoon. Warm (max 28°C on Sat morning, min 24°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Tue afternoon. Warm (max 30°C on Wed afternoon, min 24°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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) | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 11 | SW 11 | SW 11 | SW 12 | SW 14 | WSW 14 | WSW 13 | WSW 11 | W 11 | WNW 9 | SW 8 | SW 8 | SW 8 | SW 16 | SW 18 | SW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 0 | 180 | 177 | 126 | 147 | 174 | 281 | 586 | 1111 | 1152 | 582 | 584 | 144 | 29 | 15 | 15 | 42 | 49 | 67 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross | cross-on | off | cross-on | glassy | glassy | cross-on | on | glassy | cross-on | cross | glassy | cross | cross-off | cross-off | cross-off | glassy | off |
High Tide | 10:08PM0.17m | 11:57AM0.69m | 00:08AM0.19m | 12:59PM0.72m | 1:17AM0.24m | 1:49PM0.75m | 2:08AM0.31m | 2:32PM0.75m | 2:51AM0.39m | 3:10PM0.73m | 3:32AM0.46m | 3:45PM0.69m | 4:11AM0.53m | |||||||
Low Tide | 7:06PM0.15m | 3:40AM0.04m | 7:52PM0.09m | 5:12AM0.03m | 8:26PM0.06m | 6:29AM0.01m | 8:55PM0.03m | 7:32AM-0.01m | 9:22PM0.01m | 8:26AM-0.02m | 9:48PM-0.01m | 9:15AM-0.00m | 10:13PM-0.02m | |||||||
 |  |  | |  | |  |  | | | | | |  | | | | | | | |
 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — |
mm | — | — | — | — | — | — | 1 | 3 | — | — | — | — | 1 | 2 | — | — | — | — | — | — |
Temp °C | 27 | 26 | 28 | 28 | 26 | 28 | 28 | 27 | 28 | 29 | 28 | 29 | 29 | 27 | 29 | 30 | 27 | 28 | 28 | 25 |
Feels °C | 29 | 26 | 30 | 30 | 30 | 31 | 32 | 32 | 31 | 33 | 32 | 33 | 32 | 32 | 31 | 33 | 31 | 28 | 30 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | NNE 5 | SSW 12 | NNE 6 | SW 11 | SW 11 | SW 11 | SW 12 | SW 14 | WSW 14 | WSW 13 | WSW 11 | W 11 | WNW 9 | NE 8 | NE 6 | NE 7 | NE 7 | NE 6 | NNE 7 |
| kJ | 115 | 24 | 180 | 47 | 126 | 147 | 174 | 281 | 586 | 1111 | 1152 | 582 | 584 | 144 | 29 | 66 | 62 | 71 | 31 | 29 |
Swell 2 Height (m) Direction Period (s) | E 14 | SSW 12 | NNE 6 | SSW 12 | NNE 6 | NNE 6 | NE 6 | ENE 12 | ENE 12 | ENE 12 | NE 12 | NE 10 | NE 9 | NE 8 | SW 8 | SW 8 | SW 8 | SW 16 | NE 7 | NE 8 |
| kJ | 16 | 111 | 37 | 177 | 33 | 32 | 25 | 113 | 133 | 167 | 224 | 184 | 101 | 55 | 29 | 15 | 15 | 42 | 18 | 16 |
Swell 3 Height (m) Direction Period (s) | N 8 | ENE 14 | ENE 13 | ENE 14 | E 13 | E 12 | E 12 | NNE 6 | NNE 6 | NNE 6 | SSW 15 | SSW 15 | SSW 14 | SW 8 | WNW 8 | SSW 13 | SSW 13 | SSW 8 | SW 18 | SW 16 |
| kJ | 1 | 63 | 57 | 61 | 86 | 75 | 75 | 15 | 23 | 26 | 89 | 85 | 82 | 38 | 28 | 34 | 33 | 6 | 49 | 67 |
Wind waves Height (m) Direction Period (s) | NE 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 52 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 41 | 45 | 3 | 3 | 3 | 3 | 0 | 0 | 3 | 6 | 0 | 26 | 6 | 0 | 87 | 49 | 45 | 93 | 87 | 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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