
Surf Forecasts:
Kua Bay surf forecast from 19 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 5AM (local time) - 1.5ft (0.4m), 13s period, WNW swell with 56 kJ wave energy.
Best Forecast Surf Conditions for Kua Bay this week:
The most powerful waves expected at Kua Bay in the next 16 days are 0.4m 13s and forecast to arrive on Sunday (Jul 19) at 5AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 7s period and expected on Friday (Jul 24) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Sun 19th Jul) | 1.5ft (0.4m) 13s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s cookin’.
To be straight with you, this outlook’s a quiet one. Right now we’re looking at a long stretch with really nothing worth paddling out for at Kua Bay. You’ve got over a week of flat to tiny waves and the kind of energy that just won’t get you excited. It’s not until the very end of July and into early August that we start to see a little pulse. But let’s not get ahead of ourselves.
For now, the first few days, starting Sunday the 19th of July, the swell’s barely a whisper at 1ft to 2ft out of the WNW with a 12-second period. That’s a groundswell, but the energy’s weak at only 55 (combined swell energy) and it’s not enough to break properly. Winds are mostly cross or cross-onshore, so the surface will be messy. Not a single session worth chasing here.
That flat spell drags on right through to about Sunday the 26th of July. Late that afternoon, a tiny 2ft pulse shows up from the NNE, but with a short, weak 5-second period and only 21 energy. It’s clean, but it’s a beach break blip – not really surfable.
Then we get another gap until Wednesday the 29th of July afternoon, when a 3ft NE swell rolls in with a 6-second period and 44 energy. Winds turn clean, cross-off, so it’ll look tidy – but the size and period just aren’t there. Still a no-go for proper surfing.
The most interesting blip comes on Thursday the 30th of July afternoon, with a tiny 1ft SW groundswell but a very long 18-second period. That’s an old, long-range energy pulse, and with glassy conditions it could show a few pretty lines at a point or reef setup. But at that height, it’s really just a novelty – not something you’d actually ride.
After that, into the first few days of August, it’s more of the same. A little WNW swell on the 2nd of August at 1ft with a 14-second period and energy hitting 62, but it’s cross-onshore or onshore. Not worth the drive.
Honestly, Kua Bay is a total blank for this whole 16-day window. There’s no standout day, no session I’d recommend. If you’re desperate, keep an eye on that 30th of July afternoon for a glassy, super-long-period tiny wave – but that’s for the diehards only. For everyone else, maybe this is the time to check the kite gear.
Stay tuned, forecasts can shift.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Sat night. Warm (max 27°C on Sun morning, min 25°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Warm (max 27°C on Wed morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||
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) | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | W 11 | NE 7 | SW 15 | SSW 16 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | NE 7 | NE 7 | NE 7 |
Wave Graph | |||||||||||||||||||
57 | 50 | 29 | 29 | 27 | 13 | 13 | 9 | 0 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross | glassy | cross | cross-off | glassy | cross | cross-on | glassy | cross-on | cross-off | glassy | on | cross | glassy | on | glassy | cross |
High Tide | 8:11AM0.52m | 7:20PM0.57m | 9:19AM0.56m | 7:48PM0.48m | 10:31AM0.59m | 8:18PM0.40m | 11:39AM0.63m | 9:15PM0.33m | 12:37PM0.67m | 11:22PM0.29m | 1:25PM0.71m | 00:50AM0.29m | |||||||
Low Tide | 1:43AM0.10m | 1:31PM0.30m | 2:14AM0.11m | 2:59PM0.36m | 2:49AM0.12m | 5:16PM0.38m | 3:30AM0.14m | 7:54PM0.33m | 4:20AM0.14m | 8:43PM0.28m | 5:20AM0.14m | 9:10PM0.23m | |||||||
— | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | |
7:05 | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — | |
mm | 2 | — | — | 2 | — | — | 1 | — | — | — | — | — | 2 | — | — | — | — | — | — |
Temp °C | 26 | 27 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 29 | 30 | 28 | 30 | 28 | 28 | 29 | 28 | 29 | 29 | 29 | 28 | 30 | 29 | 29 | 29 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NE 7 | NNE 5 | NE 8 | NNE 7 | NNE 7 | NE 7 | NE 7 | NE 7 | SSW 12 | NNE 7 | NE 6 | NE 7 | NE 6 | NE 6 | NNE 6 | SSW 18 | NE 7 | SSW 20 |
59 | 53 | 15 | 57 | 48 | 66 | 49 | 37 | 36 | 13 | 19 | 40 | 35 | 39 | 66 | 29 | 61 | 85 | 76 | |
Swell 2 Height (m) Direction Period (s) | WNW 13 | WNW 12 | NNE 7 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | SSW 12 | SSW 12 | SSW 26 | NE 4 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | S 14 | SSW 17 | SSW 16 |
57 | 50 | 32 | 29 | 27 | 13 | 13 | 13 | 14 | 65 | 7 | 106 | 91 | 78 | 75 | 66 | 16 | 59 | 25 | |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SW 11 | WNW 12 | SSW 12 | SSW 11 | SSW 10 | SSW 16 | W 11 | SSW 16 | SW 15 | SSW 16 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 17 | NE 10 | SSW 21 | SSW 17 |
14 | 5 | 29 | 13 | 11 | 11 | 26 | 9 | 26 | 9 | 50 | 30 | 29 | 25 | 25 | 30 | 4 | 45 | 27 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NE 7 | — | — | — | — | — | — | NE 7 | — | NE 7 |
— | — | — | — | — | — | — | — | — | 50 | — | — | — | — | — | — | 54 | — | 79 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 100 | 100 | 14 | 98 | 26 | 14 | 98 | 100 | 14 | 100 | 39 | 14 | 100 | 112 | 14 | 100 | 4 | 14 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Kua Bay Surf forecast
The above surf forecast table for Kua Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kua Bay can be found by selecting the local surf guide option on the grey menu. Our Kua Bay 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 (Kua Bay) 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 Kua Bay 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.
Kua Bay is 97 km (60 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.










