Surf Forecasts:
Kua Bay surf forecast from 8 Aug 2026:
- Most powerful swell: Friday 14 Aug, 2AM (local time) - 3ft (0.9m), 6s period, NNE swell with 63 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 0.9m 6s and forecast to arrive on Friday (Aug 14) at 2AM. 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 6s period and expected on Monday (Aug 10) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Fri 14th Aug) | 3ft (0.9m) 6s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what’s in store for the next couple of weeks.
First off, it’s a dead start. Kua Bay is the only break on the radar, and for a long stretch, there’s nothing doing. The water is a warm 82°, which is a touch warmer than normal for this time of year, so you can leave the wetsuit at home.
The first real chance of a paddle doesn’t come until Sunday, August 16th. That afternoon, we’ve got a tiny 0.5ft swell from the west with a 12-second period. The energy is still weak, and the call is "surfable but very ordinary." It’s glassy, so it’ll be clean, but the size is just a ripple. You’d need a longboard or a soft top to get any kind of ride.
The only other day that shows a flicker is Tuesday, August 18th. The morning brings a similar 0.5ft west swell, 13-second period, and the energy is still weak. The afternoon turns glassy again, giving you that same tiny, clean wave. It’s knee-high at best.
There’s no standout here. The swell is too small and weak across the whole 16 days. Every day is marked as "poor surf conditions" except for a couple of "very ordinary" ones. If you’re desperate, the glassy windows on the 16th and 18th afternoons are your only options, but don’t expect much. For beginners, it’s safe because it’s tiny, but for anyone else, it’s a waiting game.
Stay patient, keep an eye on the horizon, and remember – it never stays flat forever.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun afternoon. Warm (max 28°C on Fri morning, min 26°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 28°C on Mon morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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) | W 12 | W 12 | NE 5 | NNE 5 | NE 5 | NNE 6 | W 13 | W 12 | W 12 | W 11 | W 11 | W 10 | W 10 | W 10 | W 13 | W 11 | W 13 | SSW 16 | W 12 | W 12 | NNE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 11 | 11 | 21 | 0 | 32 | 0 | 28 | 25 | 23 | 21 | 21 | 19 | 8 | 8 | 29 | 22 | 30 | 0 | 25 | 25 | 63 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | glassy | on | glassy | glassy | cross-on | cross | glassy | cross-on | cross | glassy | cross-on | cross | glassy | on | glassy | glassy | cross-on | glassy | glassy |
High Tide | 12:04PM0.74m | 11:08PM0.28m | 1:05PM0.81m | 00:47AM0.29m | 1:56PM0.86m | 1:52AM0.32m | 2:42PM0.90m | 2:44AM0.37m | 3:22PM0.91m | 3:31AM0.43m | 4:00PM0.88m | 4:16AM0.49m | 4:34PM0.83m | 5:00AM0.54m | |||||||
Low Tide | 8:07PM0.25m | 5:01AM0.08m | 8:44PM0.19m | 6:14AM0.06m | 9:17PM0.14m | 7:17AM0.03m | 9:48PM0.11m | 8:12AM0.02m | 10:18PM0.09m | 9:03AM0.02m | 10:47PM0.07m | 9:51AM0.05m | 11:15PM0.07m | ||||||||
 |  |  | | | | |  |  | | | | | | | | | | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | 1 | 1 | — | 1 | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 28 | 27 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 |
Feels °C | 31 | 29 | 29 | 30 | 30 | 30 | 31 | 31 | 30 | 31 | 30 | 32 | 30 | 31 | 31 | 30 | 31 | 31 | 29 | 29 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 4 | NE 5 | NE 11 | NNE 5 | NE 10 | NNE 6 | NE 6 | NE 6 | NE 5 | NE 7 | SSW 15 | NNE 5 | NE 6 | NE 6 | NNE 5 | NE 5 | NE 6 | NE 6 | NE 6 | NNE 6 | SSW 15 |
| kJ | 7 | 20 | 18 | 16 | 15 | 27 | 42 | 54 | 30 | 54 | 47 | 23 | 52 | 52 | 23 | 27 | 46 | 34 | 51 | 65 | 71 |
Swell 2 Height (m) Direction Period (s) | W 12 | W 12 | SSW 13 | ENE 7 | SSW 18 | NE 7 | NE 9 | W 12 | NE 8 | W 11 | W 11 | W 10 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 16 | SSW 15 | W 12 |
| kJ | 11 | 11 | 17 | 5 | 31 | 19 | 13 | 25 | 10 | 21 | 21 | 19 | 41 | 40 | 35 | 32 | 32 | 51 | 48 | 44 | 11 |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 19 | NE 10 | SSW 13 | SSW 18 | W 13 | SSW 12 | W 12 | SSW 12 | N 9 | SSW 15 | W 10 | W 10 | W 13 | W 11 | W 13 | SSW 13 | W 12 | W 12 | S 18 |
| kJ | 18 | 18 | 37 | 16 | 17 | 30 | 28 | 15 | 23 | 14 | 6 | 23 | 8 | 8 | 29 | 22 | 30 | 32 | 25 | 25 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | NE 5 | — | NE 5 | — | — | — | — | — | NE 6 | — | — | — | — | — | — | — | — | — | NNE 6 |
| kJ | — | — | 21 | — | 32 | — | — | — | — | — | 83 | — | — | — | — | — | — | — | — | — | 63 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 98 | 39 | 14 | 112 | 21 | 4 | 97 | 39 | 96 | 98 | 18 | 14 | 101 | 26 | 14 | 100 | 39 | 96 | 103 | 4 | 4 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Kua Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest