
Surf Forecasts:
Kua Bay surf forecast from 9 Jul 2026:
- Best quality surf: Tuesday 14 Jul, 8PM (local time) - 2.5ft (0.7m), 16s period, W swell with glassy 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★+): Saturday 11 Jul, 8AM (local time) - 1ft (0.3m), 19s period with SW 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 Saturday (Jul 11) at 8AM. The primary swell is predicted to be 0.3m and 19s period with a secondary swell of 0.4m and 13s. 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 Thursday (Jul 09) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sat 11th Jul) | 1ft (0.3m) 19s |
| Best Surf | 8PM (Tue 14th Jul) | 2.5ft (0.7m) 16s |
| 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, this is Rusty, and I’m looking at the next 16 days for Kua Bay. Honestly, we’ve got a long quiet stretch ahead. The surf is going to be tiny for the first week, and the real action, such as it is, doesn’t show up until the middle of the second week. The water temperature is sitting about 81°, which is a touch warmer than normal for this time of year, so it’ll feel like bathwater.
We start off with almost nothing. From Thursday the 9th right through to the end of the following week, we’re looking at mostly flat, weak conditions. The waves are barely there, with swell heights hovering around 0.7ft to 1ft, and the combined energy is mostly in the teens or low sixties (17–64). It’s poor surf, pure and simple. You’ll get some glassy mornings here and there, like Friday afternoon the 10th and Saturday morning the 11th, but the swell is too small to do anything with. The wind is light, sometimes offshore, but the ocean is just not cooperating.
Then, around Tuesday the 14th, we finally see a little pulse. The swell lifts to 2ft from the west, with a 19-second period – that’s proper long-period groundswell, which for Kua Bay means better shape but long waits between sets. The combined energy jumps to 251 (moderate), but conditions are still marginal. The wind morning is cross-onshore, and the afternoon brings rain showers and a 9 mph cross-shore wind. It’s not great, but it’s the first sign of life.
The best we’re going to see in this whole outlook is on Wednesday the 15th of July. The morning is still marginal with a 3ft west swell, 16-second period, and 310 combined energy. But the afternoon is the standout: same 3ft swell, same period, with glassy conditions and a light southwest wind. The water will be clean, the waves will have some push, and that long period means they’ll wrap in nicely. It’s not a big day, but for Kua Bay it’s the best on offer. The crowd is sometimes a factor here, so you might have a few others out, but with the glassy wind it’ll be worth it.
The rest of the week after that fades again. Thursday the 16th and Friday the 17th still have around 2ft to 3ft swell, but the wind is cross-onshore, making it messy. By Saturday the 18th, it’s dropping back to 2ft to 2ft, and by Sunday the 19th, we’re back to tiny 1ft to 1ft junk. The last few days, from the 21st to the 24th, are mostly flat or blown out. So, if you’re keen, your window is the afternoon of the 15th.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 28°C on Thu morning, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sun afternoon. Warm (max 27°C on Sun morning, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 15 | W 14 | N 7 | W 13 | W 14 | W 13 | W 14 | W 14 | W 13 | W 13 | SW 16 | SW 16 | SW 15 | W 12 | W 18 | W 19 | W 16 | W 17 | W 16 | W 16 | W 15 |
Wave Graph | |||||||||||||||||||||
17 | 16 | 21 | 31 | 37 | 29 | 61 | 64 | 55 | 30 | 89 | 86 | 78 | 26 | 162 | 251 | 198 | 273 | 310 | 306 | 291 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | glassy | cross-on | glassy | cross-on | glassy | cross-on | cross-on | cross-on | cross | cross-on | cross | glassy | on | cross-on | cross | glassy | cross | glassy | glassy |
High Tide | 12:22PM0.73m | 11:07PM0.34m | 1:17PM0.81m | 00:33AM0.31m | 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 | ||||||||
Low Tide | 7:43PM0.29m | 5:25AM0.05m | 8:45PM0.22m | 6:22AM0.02m | 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 | ||||||||
5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | |
— | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | |
mm | — | — | — | — | — | — | — | — | 1 | — | 2 | 1 | — | 1 | — | — | 1 | 2 | — | — | — |
Temp °C | 28 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 27 | 27 | 25 | 26 | 26 | 26 |
Feels °C | 31 | 30 | 30 | 30 | 31 | 30 | 30 | 29 | 29 | 30 | 30 | 29 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 29 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | NE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 7 | NE 7 | NE 7 |
104 | 112 | 29 | 67 | 67 | 65 | 73 | 96 | 75 | 104 | 138 | 119 | 117 | 90 | 59 | 59 | 83 | 64 | 93 | 93 | 69 | |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | N 7 | W 13 | W 14 | W 13 | NE 7 | W 14 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | W 18 | W 19 | W 16 | W 17 | W 16 | W 16 | W 15 |
16 | 16 | 21 | 31 | 37 | 29 | 23 | 64 | 77 | 66 | 89 | 86 | 78 | 54 | 162 | 251 | 198 | 273 | 310 | 306 | 291 | |
Swell 3 Height (m) Direction Period (s) | W 15 | W 14 | NE 7 | SSW 12 | SSW 12 | W 16 | W 14 | SW 18 | W 13 | W 13 | W 13 | W 12 | W 12 | W 12 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 14 | SW 16 |
17 | 16 | 14 | 14 | 14 | 19 | 61 | 79 | 55 | 30 | 28 | 26 | 26 | 26 | 51 | 47 | 46 | 44 | 43 | 50 | 64 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 100 | 4 | 100 | 19 | 14 | 4 | 14 | 30 | 30 | 4 | 14 | 10 | 4 | 10 | 28 | 17 | 0 | 30 | 0 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.










