Surf Forecasts:
Hakalau surf forecast from 16 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 5AM (local time) - 4.5ft (1.3m), 8s period, ENE swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 11PM (local time) - 10ft (3.0m), 9s period, ESE swell with 1,461 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 5AM (local time) - 4.5ft (1.3m), 8s period with ENE 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 Wednesday (Aug 19) at 5AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.4m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hakalau in the next 16 days are 3.0m 9s and forecast to arrive on Saturday (Aug 15) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 18s period and expected on Saturday (Aug 15) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 19th Aug) | 4.5ft (1.3m) 8s |
| Best Surf | 5AM (Wed 19th Aug) | 4.5ft (1.3m) 8s |
| Most Powerful | 11PM (Sat 15th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Hakalau over the next 16 days.
The Lowdown
Alright, Rusty here, and I'm looking at Hakalau, and honestly, the next couple of weeks have a tough look about them. The region is starting with very poor surf conditions and it’s going to take a while for things to come together.
Right now, Saturday the 15th, there’s a big, messy 15 ft swell from the ESE but it's being ripped up by a strong 30 mph cross-shore wind. That’s just ugly. You can forget about it for a paddle, maybe more of a kite setup if you have the gear. The water is a warm 81°, which is pretty normal for this time of year, so the only thing that’s hot is the surface temp.
Sunday the 16th keeps the theme going – 8 ft dropping to 7 ft, but it's still cross-on and lumpy. No good.
We get a break from the strong wind Monday the 17th morning with 5 ft and clean onshore wind from the east. The swell period is short, 8 seconds, so it’s going to be weak and poorly shaped. There's enough energy on Tuesday the 18th to get a marginal call – 3 ft to 4 ft – but the combined swell energy is low (216 to 285), so not much there. It's light wind stuff, but the surf quality comment says “questionable tide conditions.”
That pretty much sums up the entire run through to Friday the 28th of August. Day after day of small surf, light winds, and a lot of "poor surf conditions" or "marginal" ratings. The swell heights bounce between 2 ft and 6 ft, but the energy is weak, usually under 418, and wind is always on or cross-on. Nothing to get excited about.
Now, there is a flicker of a standout happening on the edge of the forecast. Saturday the 29th of August rolls in and we see a serious spike: 6 ft swell from the east, but the period jumps to 15 seconds and the energy hits a meaty 1731. That is proper groundswell energy. The wind is a light cross-on, which is a major positive for getting it clean, especially since Hakalau is a river break. Long period swells like that (over 15 seconds) love river mouths and point breaks – they should wrap and not break too straight. The Sunday the 30th then holds at 7 ft with a 13-second period, still clean with light onshore wind. That’s the best looking window in the whole forecast, but it’s a long way out and certainty is lower. For a surfer, this late run is the only real target, but you'll be waiting almost two weeks for it. It’s a quiet period for the area, so don’t be surprised if it remains flat; forecasts can change, but as it stands, you’ve got a drought before a possible little pulse of life.
Rusty.
Short Range ForecastHeavy rain (total 106mm), heaviest during Sat afternoon. Warm (max 27°C on Sun morning, min 24°C on Sat afternoon). Winds decreasing (near gales from the ESE on Sat afternoon, light winds from the E by Mon night). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Thu morning. Warm (max 27°C on Fri morning, min 25°C on Tue afternoon). Wind will be generally light. | |||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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 | E 9 | E 8 | E 8 | E 8 | E 8 | ENE 8 | E 8 | E 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | SE 9 | SE 9 | SE 8 | E 9 | ESE 8 |
Wave Graph | ||||||||||||||||||||
4176 | 678 | 682 | 527 | 332 | 265 | 226 | 122 | 148 | 202 | 223 | 223 | 178 | 117 | 86 | 52 | 47 | 58 | 54 | 103 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | cross-on | on | glassy | on | on | glassy | cross-on | cross-on | cross |
High Tide | 4:41PM0.88m | 5:23AM0.75m | 5:02PM0.78m | 6:12AM0.74m | 5:17PM0.70m | 7:10AM0.72m | 5:22PM0.62m | 8:33AM0.70m | 4:21PM0.56m | 10:31AM0.72m | 11:55AM0.77m | |||||||||
Low Tide | 11:10PM0.17m | 11:06AM0.32m | 11:36PM0.17m | 11:50AM0.42m | 00:03AM0.19m | 12:47PM0.51m | 00:34AM0.22m | 3:12PM0.56m | 1:17AM0.24m | 2:34AM0.27m | 4:18AM0.26m | |||||||||
— | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | |
mm | 67 | 32 | 2 | — | 3 | 2 | — | — | — | — | — | — | — | — | 1 | 2 | — | — | — | 1 |
Temp °C | 26 | 26 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 |
Feels °C | 22 | 25 | 26 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | S 12 | E 9 | S 16 | SE 11 | SE 11 | E 8 | ENE 8 | E 8 | E 9 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | NNE 6 | NE 6 | NNE 6 | E 9 | ESE 8 |
280 | 678 | 46 | 31 | 30 | 265 | 226 | 122 | 148 | 202 | 160 | 223 | 178 | 117 | 86 | 35 | 42 | 28 | 54 | 103 | |
Swell 2 Height (m) Direction Period (s) | S 18 | S 15 | N 9 | S 16 | S 15 | SE 11 | SE 11 | NE 8 | NE 7 | SE 10 | NE 7 | SE 9 | SE 9 | N 6 | NNE 6 | SE 9 | SE 9 | SE 8 | NNE 7 | NE 6 |
56 | 17 | 2 | 20 | 17 | 29 | 29 | 49 | 44 | 24 | 41 | 22 | 30 | 20 | 31 | 52 | 47 | 58 | 29 | 34 | |
Swell 3 Height (m) Direction Period (s) | — | N 8 | W 13 | S 10 | S 10 | S 14 | S 13 | SE 10 | SE 10 | NNE 8 | SE 10 | N 7 | NNE 7 | SE 9 | SE 9 | ENE 7 | E 8 | E 8 | SE 8 | S 14 |
— | 1 | 3 | 7 | 8 | 16 | 14 | 23 | 24 | 6 | 23 | 4 | 9 | 29 | 54 | 27 | 35 | 32 | 24 | 14 | |
Wind waves Height (m) Direction Period (s) | ESE 10 | SSE 8 | E 8 | E 8 | E 8 | — | — | — | — | NE 7 | ENE 8 | — | — | — | — | — | — | — | — | — |
4176 | 343 | 682 | 527 | 332 | — | — | — | — | 53 | 223 | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 521 | 18 | 158 | 158 | 18 | 20 | 20 | 158 | 158 | 20 | 14 | 20 | 20 | 0 | 74 | 74 | 0 | 20 | 20 | 16 |
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.











