
Surf Forecasts:
Hakalau surf forecast from 14 Sep 2026:
- Best quality surf: Monday 14 Sep, 8PM (local time) - 3.5ft (1.0m), 8s period, NE swell with glassy winds.
- Most powerful swell: Thursday 17 Sep, 2AM (local time) - 7ft (2.2m), 10s period, ENE swell with 869 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 2AM (local time) - 3.5ft (1.0m), 8s period with NE swell.
Best Forecast Surf Conditions for Hakalau this week:
The surf forecast for Hakalau over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 14) at 2AM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.5m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hakalau in the next 16 days are 2.2m 10s and forecast to arrive on Thursday (Sep 17) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 14s period and expected on Friday (Sep 18) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 14th Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 8PM (Mon 14th Sep) | 3.5ft (1.0m) 8s |
| Most Powerful | 2AM (Thu 17th Sep) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Hakalau over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s cut straight to it. We’ve got a 16-day look at Hakalau, and I gotta be honest with you – it’s a tough stretch. We’re looking at a solid block of poor surf conditions for a good week and a half. The first real chance to even think about paddling out doesn't show up until late in the window, so patience is the name of the game here.
Right out of the gate, Sunday the 13th, it’s a no-go. Lousy cross-on wind and small, weak swell. That ugly pattern sticks around, day after day. For the entire first week and into the second, we’re looking at persistent cross-onshore winds from the ESE, keeping that surface all chopped up. There’s some moderate energy in the water on the 16th and 17th (453 and 647), but it’s messy and onshore – honestly, that energy is better suited for a kite than a surfboard. This long stretch of junk runs right through the 22nd of September. A real bummer.
Now, things *finally* look like they might turn a corner on Wednesday the 23rd. We get a solid pulse of swell from the east pushing up to 10 ft. That’s a lot of water moving, with the energy meter absolutely cranking at (1821). For a river mouth like Hakalau, a swell this size pushing in from the east is proper expert territory – way too much for anyone but the experienced crew. The wind goes light and variable, even turning onshore from the ENE, which could keep it from being totally unmanageable. It’s surfable, but it’s a beast. That’s your best shot in the whole outlook.
After that big day, things settle back down through the 25th and 26th with smaller, cleaner windows but weaker swell. The water temp is hanging around 81°, which is dead normal for this time of year, so at least you won’t be freezing while you wait for a set.
So, here’s the bottom line: The one true standout is the morning of the 23rd of September. It’s big, it’s powerful, and it’s the least windy day in the whole forecast. If you’re an expert and you want a serious slab, that’s your window. Everyone else, save your energy. This area tends not to stay poor forever, and forecasts can change, but right now, the 23rd is the only light in the tunnel.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Mon afternoon. Warm (max 27°C on Tue morning, min 25°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 25mm), heaviest during Thu afternoon. Warm (max 27°C on Thu morning, min 26°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | NE 8 | NE 8 | NE 8 | NNE 8 | E 11 | E 11 | E 10 | ENE 10 | E 10 | ENE 10 | ENE 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 |
Wave Graph | |||||||||||||||||||
138 | 115 | 145 | 78 | 89 | 84 | 247 | 402 | 325 | 869 | 662 | 647 | 500 | 477 | 489 | 505 | 512 | 512 | 509 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | on | cross | cross-on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on |
High Tide | 4:51AM0.86m | 4:11PM0.69m | 5:32AM0.83m | 4:23PM0.62m | 6:19AM0.78m | 4:21PM0.56m | 7:27AM0.73m | 9:21AM0.71m | 11:04AM0.75m | 9:50PM0.38m | |||||||||
Low Tide | 10:11PM0.11m | 10:54AM0.36m | 10:33PM0.13m | 11:37AM0.43m | 10:56PM0.16m | 12:34PM0.50m | 11:23PM0.20m | 11:57PM0.25m | 1:07AM0.29m | 8:43PM0.38m | |||||||||
— | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
6:24 | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — | |
mm | — | — | 1 | 2 | — | — | 2 | 2 | 2 | 7 | 4 | 7 | 4 | 1 | — | — | 2 | — | 5 |
Temp °C | 25 | 26 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 28 | 30 | 29 | 30 | 29 | 29 | 29 | 31 | 31 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | NE 8 | NE 8 | NE 8 | NNE 8 | E 6 | E 6 | E 10 | ENE 10 | E 10 | ENE 9 | ENE 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 |
138 | 115 | 145 | 78 | 58 | 46 | 247 | 402 | 325 | 616 | 662 | 647 | 500 | 477 | 489 | 505 | 512 | 512 | 509 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | E 6 | E 11 | E 11 | NNE 7 | NNE 8 | NNE 7 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | — | S 14 | S 20 | S 14 | SSE 8 | S 17 |
32 | 22 | 21 | 19 | 89 | 84 | 43 | 23 | 9 | 11 | 10 | 10 | 9 | — | 4 | 8 | 4 | 7 | 5 | |
Swell 3 Height (m) Direction Period (s) | NW 13 | ESE 6 | E 14 | E 12 | NNE 8 | N 8 | SE 8 | SE 8 | NNE 9 | S 13 | S 14 | S 12 | S 14 | — | — | N 10 | S 18 | S 18 | N 10 |
7 | 6 | 33 | 73 | 41 | 33 | 11 | 11 | 16 | 3 | 4 | 3 | 4 | — | — | 2 | 7 | 6 | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NNE 6 | ENE 10 | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | 46 | 869 | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 20 | 20 | 14 | 74 | 74 | 14 | 76 | 76 | 14 | 18 | 18 | 18 | 18 | 18 | 14 | 96 | 96 | 20 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Hakalau Surf forecast
The above surf forecast table for Hakalau provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Hakalau can be found by selecting the local surf guide option on the grey menu. Our Hakalau 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 (Hakalau) 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 Hakalau 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.
Hakalau is 21 km (13 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.










