Surf Forecasts:
Hakalau surf forecast from 2 Sep 2026:
- Best quality surf: Friday 4 Sep, 8PM (local time) - 6ft (1.9m), 13s period, E swell with glassy winds.
- Most powerful swell: Friday 4 Sep, 11AM (local time) - 7ft (2.1m), 14s period, E swell with 1,779 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 8PM (local time) - 6ft (1.9m), 13s period with E 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 Friday (Sep 04) at 8PM. The primary swell is predicted to be 1.9m and 13s period with a secondary swell of 0.4m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hakalau in the next 16 days are 2.1m 14s and forecast to arrive on Friday (Sep 04) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 11s period and expected on Friday (Sep 04) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Fri 4th Sep) | 6ft (1.9m) 13s |
| Best Surf | 8PM (Fri 4th Sep) | 6ft (1.9m) 13s |
| Most Powerful | 11AM (Fri 4th Sep) | 7ft (2.1m) 14s |
Table - best surf conditions forecast for Hakalau over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down what we've got for the next couple of weeks.
Alright, it's a bit of a slow start, but there's a window of opportunity opening up. The main show is at Hakalau, a river mouth break that's fairly consistent when it gets the right swell. The water is sitting at 81°, which is about average for this time of year, so no surprises there.
The surf really starts to pick up around Friday, September 4th. We're looking at a solid 7ft swell from the east, with a long period of 14 seconds (that's groundswell, folks). The combined energy is strong at 1779, and it's wrapping in with a light onshore breeze. It's a bit of a mixed bag though, with the forecast calling it marginal. The size is there, but conditions might be a little tricky.
The real standout window hits on Sunday, September 6th. The swell holds at 7ft from the ENE, period of 12 seconds, and the combined energy is still strong at 1129. The magic is the wind: glassy. Dead flat. That's the best you're going to get, and it's perfect for experienced surfers who can handle a 7ft wave at a river mouth. It's a river break, so that long-period groundswell will have some shape to it. Watch out for the crowds, though, as it's "sometimes" busy. This is your pick.
After that, the wind goes onshore and choppy for a few days, with a strong 19 mph SE breeze on the 7th and 8th making a mess of things. The swell drops right off mid-week, and we're in a dry spell.
There's a flicker of hope on Sunday, September 13th in the afternoon. The swell is small at 4ft, but the wind goes glassy again. The combined energy is low at 308, but it's clean. Worth a look if you're desperate for a glide.
The final few days of the forecast see the swell trying to build again on Thursday, September 17th, with 7ft to 8ft from the east and ENE, but the wind is cross-on and choppy, so it's a messy one. The run-up to that is pretty quiet with small, weak swell.
So, to sum it up: the best bet is Sunday, September 6th at Hakalau when it's glassy. The Friday and Saturday before that have the size, but the conditions are just okay. The rest of the period is mostly a write-off until that last windy pulse on the 17th.
Rusty, signing off.
Short Range ForecastLight rain (total 8mm), mostly falling on Wed morning. Warm (max 26°C on Wed morning, min 24°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Sat night. Warm (max 27°C on Mon morning, min 25°C on Sat morning). Winds increasing (calm on Sat night, fresh winds from the SE by Mon afternoon). | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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) | ESE 10 | SE 10 | ENE 8 | E 7 | E 14 | E 14 | E 14 | E 13 | ENE 14 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | NE 10 | SE 6 | E 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 457 | 396 | 327 | 315 | 390 | 452 | 1779 | 1283 | 1470 | 1474 | 1616 | 1661 | 1200 | 1072 | 1268 | 1261 | 980 | 638 | 322 | 264 | 276 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | on | on | cross-off | on | on | glassy | on | glassy | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on |
High Tide | 5:04PM0.62m | 8:05AM0.79m | 4:48PM0.54m | 9:58AM0.81m | 11:26AM0.87m | 10:20PM0.42m | 12:22PM0.94m | 11:59PM0.48m | 1:05PM0.99m | 00:55AM0.57m | 1:41PM1.01m | 1:40AM0.65m | |||||||||
Low Tide | 12:38PM0.49m | 00:07AM0.15m | 3:14PM0.54m | 1:05AM0.18m | 2:41AM0.20m | 7:30PM0.39m | 4:27AM0.19m | 7:35PM0.33m | 5:44AM0.15m | 7:54PM0.28m | 6:41AM0.11m | 8:17PM0.23m | |||||||||
 |  |  | | | | |  |  | | | | | | | | |  | |  |  | |
 | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — |
mm | 4 | — | 2 | — | — | 2 | — | — | — | — | 1 | 4 | — | 2 | 2 | — | — | — | — | 1 | 3 |
Temp °C | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 26 | 26 | 25 | 26 | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 27 |
Feels °C | 28 | 27 | 26 | 26 | 25 | 26 | 27 | 26 | 26 | 28 | 29 | 28 | 29 | 30 | 30 | 27 | 26 | 27 | 28 | 27 | 29 |
Swell 1 Height (m) Direction Period (s) | NE 8 | NE 8 | ENE 8 | E 7 | E 7 | E 14 | E 14 | E 13 | ENE 14 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | NE 10 | NE 10 | E 13 |
| kJ | 418 | 262 | 327 | 315 | 320 | 452 | 1779 | 1283 | 1470 | 1474 | 1616 | 1661 | 1200 | 1072 | 1268 | 1261 | 980 | 638 | 322 | 177 | 276 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | SE 10 | SSE 10 | E 12 | E 14 | S 11 | S 14 | SSE 9 | SSE 10 | SSE 10 | SSE 10 | N 9 | N 11 | N 8 | SSE 10 | E 15 | E 14 | E 14 | E 14 | E 13 | NE 9 |
| kJ | 457 | 396 | 267 | 248 | 390 | 55 | 14 | 27 | 56 | 56 | 38 | 41 | 85 | 33 | 36 | 109 | 150 | 261 | 239 | 225 | 112 |
Swell 3 Height (m) Direction Period (s) | E 14 | E 9 | E 13 | SSE 10 | S 11 | N 9 | S 16 | N 8 | N 12 | NNE 11 | NNE 10 | SSE 10 | SSE 10 | SE 10 | N 10 | SSE 9 | SSE 9 | SSE 10 | NNW 12 | NNW 12 | NNW 11 |
| kJ | 102 | 95 | 215 | 149 | 125 | 2 | 5 | 5 | 11 | 39 | 34 | 38 | 37 | 24 | 30 | 33 | 33 | 36 | 14 | 14 | 12 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | E 8 | — | — | — | — | — | — | — | — | — | — | ESE 3 | SSE 4 | SE 5 | SE 6 | ESE 6 |
| kJ | — | — | — | — | — | 292 | — | — | — | — | — | — | — | — | — | — | 9 | 6 | 135 | 264 | 132 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 166 | 20 | 14 | 160 | 20 | 14 | 158 | 158 | 0 | 20 | 20 | 0 | 20 | 0 | 14 | 20 | 74 | 18 | 53 | 76 | 18 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.
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