Surf Forecasts:
Kua Bay surf forecast from 11 Jul 2026:
- Best quality surf: Tuesday 14 Jul, 11AM (local time) - 2ft (0.6m), 19s period, W swell with cross-offshore winds.
- Most powerful swell: Wednesday 15 Jul, 8AM (local time) - 2.5ft (0.8m), 16s period, W swell with 314 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 8PM (local time) - 1.5ft (0.4m), 19s period with WNW swell.
Best Forecast Surf Conditions for Kua Bay this week:
The surf forecast for Kua Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jul 13) at 8PM. The primary swell is predicted to be 0.4m and 19s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kua Bay in the next 16 days are 0.8m 16s and forecast to arrive on Wednesday (Jul 15) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Saturday (Jul 11) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 13th Jul) | 1.5ft (0.4m) 19s |
| Best Surf | 11AM (Tue 14th Jul) | 2ft (0.6m) 19s |
| Most Powerful | 8AM (Wed 15th Jul) | 2.5ft (0.8m) 16s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
Alright folks, Rusty here with a look at what’s coming up for Kua Bay. It’s a bit of a slow period ahead, so let’s get into it.
We’ve got a small window of clean, rideable surf kicking off around Tuesday morning, July 14th. That’s the standout for the whole outlook. A nice little WNW groundswell is building, pushing through at about 2 ft and swinging from the west. The real beauty here is the wind: light cross-offshore breezes are keeping things clean, and we’re seeing moderate wave energy building up (251 to 267). Kua Bay is an exposed spot, so it’ll be catching that energy nicely. Water temp is sitting at a balmy 81°, which is a touch warmer than normal for this time of year.
That carries into Wednesday morning, July 15th, with the swell peaking around 3 ft and energy climbing to 310. It’s still clean under a gentle cross-offshore wind. But by Wednesday afternoon, the wind shifts a bit onshore and the quality starts to slide into marginal territory. Thursday and Friday, July 16th and 17th, are still seeing some waist-high swell, but the wind is messing with the surface, so it’s not going to be as good.
After that, things get quiet. From Saturday, July 18th, the swell drops right off, and we’ve got a long stretch of flat or near-flat conditions. For a few days straight, from the 19th through to the end of the period, there’s next to nothing on offer. Just tiny dribbles of energy that won't get you excited. It’s a genuine lull for the area.
So, to sum it up: your best bet is to target Tuesday and Wednesday mornings (July 14th and 15th) for the cleanest conditions and the most push. The rest of the outlook is a write-off for any decent waves.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 28°C on Sat afternoon, min 24°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Tue night. Warm (max 27°C on Thu morning, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
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 14 | W 14 | W 13 | W 13 | W 13 | W 12 | W 12 | W 19 | W 18 | W 19 | W 16 | W 17 | W 16 | W 15 | W 15 | W 15 | W 15 | W 14 | W 14 | W 14 | W 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 61 | 64 | 55 | 30 | 28 | 26 | 26 | 29 | 162 | 251 | 267 | 270 | 310 | 302 | 291 | 275 | 272 | 206 | 203 | 146 | 140 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | cross-on | glassy | glassy | glassy | cross-off | glassy | cross-off | cross-off | glassy | cross-off | cross | cross-on | cross-on | cross | glassy | cross-on | cross | cross-on |
High Tide | 2:08PM0.88m | 1:44AM0.30m | 2:56PM0.93m | 2:43AM0.32m | 3:41PM0.96m | 3:37AM0.34m | 4:24PM0.95m | 4:28AM0.37m | 5:04PM0.91m | 5:19AM0.41m | 5:42PM0.85m | 6:13AM0.45m | 6:17PM0.77m | ||||||||
Low Tide | 9:33PM0.17m | 7:18AM-0.00m | 10:14PM0.13m | 8:12AM-0.02m | 10:53PM0.10m | 9:03AM-0.02m | 11:30PM0.09m | 9:53AM0.01m | 00:05AM0.08m | 10:42AM0.06m | 00:39AM0.08m | 11:32AM0.14m | 1:11AM0.09m | ||||||||
 | |  | | |  | | | | |  | | | | |  | | | | | | |
 | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — |
 | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | 2 | 5 | 1 | 1 | 2 | — | — | — | — | — | — |
Temp °C | 27 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 27 | 27 | 26 | 27 | 27 | 27 |
Feels °C | 31 | 32 | 31 | 29 | 30 | 29 | 29 | 28 | 29 | 28 | 27 | 27 | 27 | 27 | 28 | 30 | 29 | 29 | 31 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | SW 16 | NNE 7 | SW 14 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | W 16 | W 15 | W 15 | W 15 | NNE 7 | NNE 7 | NNE 7 | NNE 6 | NNE 7 |
| kJ | 99 | 103 | 61 | 111 | 114 | 62 | 99 | 54 | 53 | 66 | 83 | 64 | 310 | 302 | 291 | 275 | 61 | 59 | 59 | 60 | 54 |
Swell 2 Height (m) Direction Period (s) | W 14 | W 14 | SW 17 | SW 16 | SW 16 | W 12 | SW 15 | W 12 | W 18 | W 19 | W 16 | W 17 | NNE 7 | NE 7 | NNE 7 | NE 7 | W 15 | W 14 | W 14 | W 14 | W 14 |
| kJ | 61 | 64 | 77 | 66 | 64 | 26 | 57 | 26 | 162 | 251 | 267 | 270 | 47 | 54 | 61 | 56 | 272 | 206 | 203 | 146 | 140 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 18 | W 13 | W 13 | W 13 | ENE 8 | W 12 | W 19 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | NNE 8 | SW 16 | SW 13 | SW 13 | SW 15 | SSW 16 | SSW 11 | SSW 10 |
| kJ | 51 | 79 | 55 | 30 | 28 | 6 | 26 | 29 | 51 | 47 | 46 | 44 | 44 | 19 | 64 | 42 | 26 | 56 | 25 | 12 | 10 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNE 8 | — | NNE 7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 107 | — | 75 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 4 | 20 | 30 | 4 | 30 | 4 | 30 | 0 | 0 | 0 | 0 | 0 | 30 | 10 | 30 | 17 | 0 | 28 | 10 | 14 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.
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