
Surf Forecasts:
Hakalau surf forecast from 13 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 11PM (local time) - 2.5ft (0.7m), 10s period, E swell with glassy winds.
- Most powerful swell: Thursday 17 Sep, 11AM (local time) - 7.5ft (2.3m), 9s period, ENE swell with 845 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 2.3m 9s and forecast to arrive on Thursday (Sep 17) at 11AM. 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 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 14th Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 11PM (Tue 15th Sep) | 2.5ft (0.7m) 10s |
| Most Powerful | 11AM (Thu 17th Sep) | 7.5ft (2.3m) 9s |
Table - best surf conditions forecast for Hakalau over the next 16 days.
The Lowdown
Alright folks, Rusty here. Honestly, looking ahead for Hakalau, it's a tough run. The entire 16-day window is a real mixed bag, but if we're being straight, the best we can say is maybe keep an eye on the end of the forecast period. The early days are pretty much a write-off for anything decent.
The water temp is sitting at about 81°, which is average for this time of year, so no surprises there.
Let's talk about the standout, because there really is only one window that has a pulse. Tuesday, September 22nd. The morning shows a solid 7ft swell from the East with a period of 10 seconds, pushing a strong to very strong wave energy (855). It's still a marginal call, but by the afternoon things look a touch better. The swell bumps up to 8ft from the East, the period holds at 10 seconds, and the energy jumps even higher (1050). The wind goes light from the East, which at an exposed river mouth like Hakalau is about as good as we can hope for. That afternoon session on the 22nd is our best shot. That said, it's still a "questionable tide" and a "marginal" score. We're not talking epic barrels here.
Now, a word of caution. On Thursday, September 17th, the swell pushes up to 8ft from the ENE, but it's messy. The wind is a moderate cross-onshore at 12 mph, and the energy is high (855) but the conditions are just poor. That kind of size with that wind makes it a messy, choppy mess. If you're a beginner, that's a hard pass. For the rest of the window, the wind is mostly cross-onshore or onshore, and the wave quality is consistently listed as "poor" or "marginal." The swell direction is often from the ENE or E, which isn't the ideal direction (ENE) for this spot, so it's never really setting up cleanly.
For the first week, from September 13th through the 21st, the surf is either tiny, poor, or both. You'll see some small 3ft to 4ft swells, but the wind and quality just aren't there. The biggest pulse of the period after the 22nd peaks around 8ft on September 23rd, but again, it's cross-onshore and choppy. It's more of a kiteboarding setup than a day for paddling.
So here's the bottom line: If you're itching for a surf, your only realistic window is the afternoon of September 22nd and maybe the morning of the 23rd at Hakalau. It's not going to be pristine, but on paper, it's the best the 16 days have to offer. Everything else is a gamble you're likely to lose.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon afternoon. Warm (max 27°C on Tue morning, min 25°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 46mm), heaviest during Wed night. Warm (max 27°C on Wed morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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 9 | NNE 9 | NE 8 | NNE 8 | NE 8 | NE 8 | E 11 | E 11 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 |
Wave Graph | |||||||||||||||||||||
119 | 121 | 138 | 88 | 165 | 99 | 89 | 84 | 249 | 339 | 394 | 644 | 845 | 724 | 668 | 501 | 493 | 505 | 512 | 512 | 459 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | on | on | glassy | cross-on | on | glassy | on | on | on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross-on |
High Tide | 3:53PM0.76m | 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 | 10:14AM0.28m | 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 | — | — | 6:07 | — | — | |
— | 6:24 | — | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — | |
mm | — | — | — | — | 1 | 2 | — | — | 1 | 2 | 3 | 16 | 6 | 6 | 11 | 1 | 1 | — | — | — | 3 |
Temp °C | 25 | 25 | 25 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 |
Feels °C | 27 | 27 | 28 | 29 | 29 | 30 | 29 | 29 | 31 | 30 | 30 | 29 | 30 | 29 | 27 | 27 | 28 | 27 | 27 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | NNE 9 | NNE 9 | NE 8 | NNE 8 | NE 8 | NE 8 | NNE 8 | E 6 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | SSE 10 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 |
119 | 121 | 138 | 88 | 165 | 99 | 54 | 51 | 249 | 339 | 394 | 644 | 845 | 724 | 9 | 501 | 493 | 505 | 512 | 512 | 459 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | SE 8 | SE 8 | E 6 | SE 8 | E 12 | E 11 | E 11 | NNE 8 | NNE 8 | NNE 7 | NNE 9 | SSE 10 | SSE 10 | SSE 10 | — | S 14 | S 20 | S 19 | S 18 | S 17 |
43 | 41 | 32 | 23 | 21 | 73 | 89 | 84 | 50 | 22 | 10 | 15 | 10 | 10 | 9 | — | 4 | 8 | 7 | 7 | 6 | |
Swell 3 Height (m) Direction Period (s) | SE 8 | ENE 8 | NW 13 | SE 8 | E 14 | SE 8 | SE 8 | N 8 | SE 8 | SE 8 | NNE 9 | SSE 11 | S 14 | S 15 | S 12 | — | N 12 | N 10 | S 14 | NW 9 | NW 9 |
43 | 39 | 7 | 22 | 33 | 14 | 15 | 33 | 11 | 16 | 16 | 11 | 4 | 4 | 3 | — | 3 | 2 | 4 | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | E 6 | — | — | — | — | — | — | — | E 9 | — | — | — | — | — | — |
— | — | — | — | — | — | 26 | — | — | — | — | — | — | — | 668 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 20 | 72 | 0 | 120 | 20 | 0 | 20 | 74 | 0 | 20 | 74 | 72 | 18 | 18 | 16 | 18 | 18 | 14 | 18 | 158 | 20 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










