
Surf Forecasts:
Hakalau surf forecast from 20 Jul 2026:
- Best quality surf: Saturday 25 Jul, 5AM (local time) - 5.5ft (1.7m), 8s period, ENE swell with glassy winds.
- Most powerful swell: Sunday 26 Jul, 8PM (local time) - 7ft (2.1m), 16s period, E swell with 2,136 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 5AM (local time) - 4ft (1.2m), 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 Monday (Jul 20) at 5AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.8m 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 2.1m 16s and forecast to arrive on Sunday (Jul 26) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 15s period and expected on Monday (Jul 20) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 20th Jul) | 4ft (1.2m) 8s |
| Best Surf | 5AM (Sat 25th Jul) | 5.5ft (1.7m) 8s |
| Most Powerful | 8PM (Sun 26th Jul) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Hakalau over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on offer for Hakalau over the next couple of weeks.
Right off the bat, I gotta be straight with you – the first week is a bit of a write-off. We're looking at a solid block of nothing special from Monday, July 20th right through to the end of that week. The wind is mostly cross-onshore, chopping things up, and the swell is weak and short period. The energy is low, barely cracking 200 or 300 (weak energy), so it's not worth getting wet for. You'll be fighting a bumpy, crumbly mess.
We get a slight flicker of hope on Wednesday, July 22nd, where the period jumps to 12 seconds and the wind goes onshore, but the forecast still calls it marginal. The energy picks up a bit (moderate wave energy at 422), but it's still not clean. The whole first week is a right-off for any decent waves.
Now, the end of July and start of August is where it gets interesting. The standout window is from Saturday, July 25th through to Tuesday, July 28th. We see a real pulse of long-period groundswell rolling in. Saturday afternoon the period hits a whopping 17 seconds with energy soaring to 1402 (strong wave energy), and on Sunday, July 26th, it's even bigger with 16-second swell and energy over 2000. That's powerful stuff.
The main break here is Hakalau (river mouth). This is a river break, which is a key point. With these long-period swells (over 15 seconds), a river mouth or a point break is your best bet. These long-period swells can be tricky at straight beach breaks, but a river mouth often focuses the energy into a decent peak. The swell direction is out of the E and ENE, which is the optimum direction for this spot. The wind is forecast to be light and onshore, which is a major positive – it'll be clean. The swell height will be around 5 ft to 6 ft, so it's a solid size but not too crazy for an intermediate surfer.
The water temperature is about average for the time of year, so no shock to the system there.
The only thing to watch for is that this spot is listed as "sometimes" crowded, so expect a few other souls out there for this pulse. The consistency is "fairly consistent," which is good.
After that main pulse, things settle down again. The end of July and beginning of August sees the swell drop back to the 2 ft range with short periods again, and the wind goes back to cross-onshore. It's a long gap of poor conditions from around July 30th right through to the end of the forecast on August 4th. So, that Saturday and Sunday, July 25th and 26th, are the clear standouts. The early part of the following week, July 28th, still has some decent energy, but the magic fades.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Tue night. Warm (max 27°C on Mon afternoon, min 24°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Wed night. Warm (max 25°C on Wed night, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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 7 | E 7 | ENE 7 | E 7 | E 7 | E 12 | E 12 | E 12 | E 11 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | NE 8 | E 17 | E 16 |
Wave Graph | |||||||||||||||||||
163 | 131 | 88 | 178 | 135 | 143 | 132 | 387 | 477 | 482 | 225 | 192 | 262 | 254 | 368 | 355 | 264 | 1059 | 1487 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | on | cross-on | on | on | cross-on | on | on | on |
High Tide | 8:11AM0.65m | 6:42PM0.68m | 9:44AM0.68m | 6:51PM0.60m | 11:15AM0.74m | 12:18PM0.79m | 1:02PM0.85m | 11:21PM0.45m | 1:39PM0.90m | 00:29AM0.47m | |||||||||
Low Tide | 1:22AM0.22m | 1:16PM0.49m | 2:01AM0.22m | 3:17PM0.56m | 2:48AM0.23m | 3:47AM0.22m | 4:51AM0.21m | 8:36PM0.42m | 5:48AM0.17m | 8:48PM0.39m | |||||||||
— | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | |
7:01 | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | |
mm | — | — | — | — | — | 2 | 8 | 1 | — | 3 | 1 | — | 3 | — | — | — | — | — | 5 |
Temp °C | 25 | 26 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 |
Feels °C | 28 | 27 | 28 | 27 | 27 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 27 | 25 | 26 | 26 | 26 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 7 | E 7 | ENE 7 | NE 7 | E 7 | E 7 | E 12 | E 12 | NE 7 | ENE 7 | E 7 | ENE 7 | ENE 10 | ENE 8 | ENE 8 | NE 8 | E 17 | E 16 |
163 | 131 | 88 | 178 | 51 | 143 | 121 | 387 | 477 | 46 | 225 | 135 | 262 | 54 | 368 | 355 | 264 | 1059 | 1487 | |
Swell 2 Height (m) Direction Period (s) | NNE 8 | NNE 7 | NNE 8 | S 15 | E 11 | NE 7 | NE 7 | NNE 7 | NNE 7 | S 13 | SE 14 | NNE 6 | ENE 10 | SE 13 | E 17 | E 16 | ESE 8 | NE 8 | NE 8 |
50 | 62 | 50 | 67 | 61 | 47 | 46 | 35 | 32 | 28 | 33 | 34 | 34 | 27 | 93 | 234 | 102 | 241 | 275 | |
Swell 3 Height (m) Direction Period (s) | S 16 | S 16 | S 15 | E 12 | S 14 | E 11 | E 12 | S 13 | S 13 | SE 15 | S 13 | E 10 | SE 13 | E 18 | ENE 9 | ENE 9 | E 14 | ESE 8 | E 8 |
48 | 80 | 71 | 25 | 64 | 58 | 132 | 30 | 30 | 34 | 30 | 56 | 28 | 26 | 17 | 8 | 264 | 102 | 127 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 7 | — | — | — | — | E 11 | — | ENE 7 | — | ENE 7 | — | — | — | — | — |
— | — | — | — | 135 | — | — | — | — | 482 | — | 192 | — | 254 | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 156 | 95 | 16 | 20 | 158 | 74 | 158 | 95 | 14 | 158 | 20 | 16 | 20 | 20 | 14 | 20 | 96 | 95 |
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.










