Surf Forecasts:
Hakalau surf forecast from 10 Aug 2026:
- Best quality surf: Sunday 16 Aug, 8AM (local time) - 10ft (3.0m), 11s period, NE swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 8PM (local time) - 15ft (4.5m), 13s period, ENE swell with 7,436 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 2AM (local time) - 4.5ft (1.3m), 8s 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 Wednesday (Aug 12) at 2AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.2m 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 4.5m 13s and forecast to arrive on Saturday (Aug 15) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Sunday (Aug 16) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 12th Aug) | 4.5ft (1.3m) 8s |
| Best Surf | 8AM (Sun 16th Aug) | 10ft (3.0m) 11s |
| Most Powerful | 8PM (Sat 15th Aug) | 15ft (4.5m) 13s |
Table - best surf conditions forecast for Hakalau over the next 16 days.
The Lowdown
Alright, Rusty here again, with the same story in feet and miles.
So, Hakalau is looking pretty grim to start. There’s a dry spell of nearly a full week where you can leave the board in the garage. From Sunday the 9th through Thursday the 13th, it’s just poor surf with cross-onshore winds and weak wave energy. The east swell is short-period, around 7-8 seconds - total mush. Water temp is about average for the time of year at 80°F, but that doesn’t fix the wind.
We finally get a pulse on Friday afternoon, August 14th. The energy jumps to 1654, with an 8-foot easterly swell stretching out to a 12-second period - that’s real groundswell. But the wind is still cross-onshore, so it’s only marginal.
The real standout is Saturday, August 15th. Saturday morning brings a 13-foot east-northeast swell with a 13-second period and energy at 5233, and by the afternoon it’s peaking at a massive 15 feet (ENE) with energy at 7337. The wind goes cross-shore, making it more rideable. That’s expert territory only - way too big for anyone not locked in. The afternoon session is the one to watch for the brave.
If you want clean lines, Sunday morning, August 16th, is your window. Glassy flat calm, zero wind. Swell is still a solid 7 feet from the north, with a 9-second period and 1563 energy. It’ll be smooth and clean, but that north direction and shorter period can make the waves close out a bit at the beach. Still, glassy is glassy.
After that, it’s back to junk. Weak, choppy, onshore conditions all through the next week. There’s a bigger swell showing up Sunday, August 23rd - an 8-foot easterly with an 11-second period and energy at 1665 - but it’s all marginal and the wind is on. Way too far out to bank on.
Best bet is Saturday for the big dogs, and Sunday morning for the glassy trade-off. Crowds are possible here, so you won’t be alone.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Sun afternoon. Warm (max 27°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 26°C on Wed afternoon, min 25°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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) | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | E 8 | E 9 | E 10 | E 12 | ENE 12 | ENE 13 | ENE 13 | NE 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 464 | 364 | 310 | 302 | 294 | 220 | 263 | 208 | 203 | 233 | 273 | 217 | 351 | 263 | 490 | 1616 | 2547 | 5186 | 7242 | 6747 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | on | on | glassy | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross-off |
High Tide | 00:41AM0.50m | 2:07PM1.08m | 1:36AM0.56m | 2:44PM1.09m | 2:25AM0.62m | 3:18PM1.08m | 3:10AM0.67m | 3:49PM1.03m | 3:54AM0.71m | 4:17PM0.96m | 4:38AM0.74m | 4:41PM0.88m | ||||||||
Low Tide | 8:27PM0.34m | 6:42AM0.04m | 8:55PM0.29m | 7:33AM0.01m | 9:23PM0.25m | 8:19AM0.02m | 9:51PM0.21m | 9:03AM0.06m | 10:18PM0.19m | 9:44AM0.13m | 10:44PM0.17m | 10:25AM0.22m | 11:10PM0.17m | |||||||
 |  |  | | |  | |  | | | | | | | | | |  | |  | |
 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — |
 | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:49 | — |
mm | 3 | 3 | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | — |
Temp °C | 26 | 26 | 27 | 27 | 26 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 27 | 26 |
Feels °C | 27 | 28 | 28 | 28 | 28 | 26 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 26 | 27 | 27 | 28 | 28 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | E 8 | E 9 | E 10 | E 12 | ENE 12 | ENE 13 | ENE 13 | NE 12 |
| kJ | 464 | 364 | 310 | 302 | 294 | 220 | 263 | 208 | 203 | 233 | 273 | 217 | 351 | 263 | 490 | 1616 | 2547 | 5186 | 7242 | 6747 |
Swell 2 Height (m) Direction Period (s) | NE 9 | NE 9 | NNW 10 | NNW 9 | NNW 9 | ESE 9 | NNW 8 | NNW 8 | S 18 | S 18 | S 16 | NE 7 | S 15 | NE 7 | NE 8 | SE 11 | SE 12 | SE 12 | SSE 12 | SE 12 |
| kJ | 28 | 12 | 19 | 16 | 15 | 54 | 6 | 6 | 57 | 54 | 46 | 86 | 40 | 131 | 198 | 33 | 36 | 39 | 58 | 34 |
Swell 3 Height (m) Direction Period (s) | N 12 | NNW 11 | NE 9 | SSE 9 | SE 12 | NNW 8 | S 16 | S 20 | NNW 7 | NNW 7 | NW 7 | S 16 | N 7 | ESE 12 | E 14 | S 14 | S 14 | S 13 | SE 12 | S 18 |
| kJ | 3 | 23 | 12 | 9 | 6 | 13 | 5 | 30 | 5 | 5 | 2 | 43 | 1 | 56 | 187 | 16 | 14 | 13 | 37 | 24 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 7 | — | NNW 9 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | — | 8 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 95 | 14 | 158 | 158 | 16 | 20 | 95 | 0 | 158 | 158 | 14 | 98 | 95 | 14 | 98 | 95 | 72 | 72 | 72 | 72 |
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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