Surf Forecasts:
Kua Bay surf forecast from 10 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 2AM (local time) - 2.5ft (0.7m), 17s 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★+): Friday 10 Jul, 11PM (local time) - 1.5ft (0.4m), 15s period with W 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 Friday (Jul 10) at 11PM. The primary swell is predicted to be 0.4m and 15s period with a secondary swell of 0.8m and 6s. 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 cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 7s period and expected on Saturday (Jul 11) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 10th Jul) | 1.5ft (0.4m) 15s |
| Best Surf | 2AM (Wed 15th Jul) | 2.5ft (0.7m) 17s |
| 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. Let’s talk about what’s happening at Kua Bay on the Big Island.
The next 16 days are a real mixed bag. Honestly, if you're looking to paddle out, you've got to be patient. There’s nothing worth jumping in for until mid-week next week. The first several days are flat and poor – we're talking tiny, weak waves with no push, and the wind is mostly cross or cross-onshore. It’s a bit of a frustrating start.
Friday the 10th and Saturday the 11th are barely ripples at 1 ft to 1 ft, with a WNW swell. The energy is super weak, like 31 to 112 in the brackets, so don't even bother. Sunday the 12th through Tuesday the 15th are pretty much dead or just marginal. Wednesday the 15th morning is the first flicker of something real. The swell picks up to 3 ft from the west, period at 16 seconds, and the combined energy jumps to 310. The wind is a light cross-offshore, so the surface will be clean. That’s your best window in the whole stretch – Wednesday morning is the standout. It’s a long-period groundswell, so the waves will have shape and some punch for the size, and the sets will be a bit more spaced out, making it easier to get out back.
After that, Thursday the 16th and Friday the 17th morning are still rideable with the same 2 ft to 3 ft west swell, but the wind gets more cross or cross-onshore later. Friday the 17th morning is glassy though, with 2 ft and 203 energy – worth a look if you missed Wednesday.
The second week looks pretty grim again. Saturday the 18th onward the swell drops right off, and by Monday the 20th through the end of the window, it’s mostly flat or tiny little wind slop. There’s a brief 2 ft blip on the 22nd afternoon, but it’s from the NNE with a pitiful 5-second period and only 19 energy – basically just chop. Not worth the drive.
Water temp is sitting at 81°, which is a touch warmer than usual for this time of year, so you can leave the thick suit at home.
Overall, circle Wednesday July 15th morning on the calendar. That’s the one. Everything else is a long wait or a skunk.
- Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Fri morning, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Mon night. Warm (max 27°C on Mon afternoon, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | |||||||||||||||
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 13 | W 14 | W 13 | W 14 | W 14 | W 13 | W 13 | W 13 | W 12 | W 12 | W 12 | W 18 | W 19 | W 16 | W 17 | W 16 | W 15 | W 15 | W 15 | W 15 | W 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 31 | 37 | 29 | 61 | 64 | 55 | 30 | 28 | 26 | 26 | 26 | 162 | 251 | 198 | 270 | 310 | 302 | 291 | 275 | 272 | 206 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | glassy | cross-on | glassy | glassy | on | glassy | cross | glassy | glassy | glassy | cross-on | cross | glassy | cross-off | cross-on | cross-off | cross-on | cross | glassy |
High Tide | 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 | 5:19AM0.41m | 5:42PM0.85m | ||||||||
Low Tide | 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 | 10:42AM0.06m | 00:39AM0.08m | ||||||||
 |  |  | | | | | | | | |  | |  | | | | | | | | |
 | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — | — | 7:06 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | — | 1 | 2 | — | 1 | 2 | — | — | — |
Temp °C | 27 | 27 | 27 | 27 | 27 | 26 | 27 | 27 | 26 | 26 | 27 | 26 | 27 | 26 | 25 | 26 | 26 | 25 | 27 | 27 | 26 |
Feels °C | 30 | 30 | 31 | 30 | 30 | 30 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 27 | 28 | 27 | 27 | 28 | 30 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | NNE 6 | NNE 6 | W 13 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | SW 16 | NNE 8 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | W 15 | NNE 7 | NE 6 | NNE 7 |
| kJ | 67 | 65 | 29 | 75 | 116 | 56 | 111 | 64 | 116 | 104 | 99 | 53 | 78 | 114 | 70 | 64 | 73 | 291 | 90 | 47 | 83 |
Swell 2 Height (m) Direction Period (s) | W 13 | W 14 | NNE 8 | W 14 | W 14 | SW 17 | SW 16 | W 13 | SW 16 | SW 15 | SW 14 | W 18 | W 19 | W 16 | W 17 | W 16 | W 15 | NNE 7 | W 15 | W 15 | W 14 |
| kJ | 31 | 37 | 11 | 61 | 64 | 77 | 66 | 28 | 62 | 57 | 54 | 162 | 251 | 198 | 270 | 310 | 302 | 57 | 275 | 272 | 206 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SSW 12 | W 16 | SW 18 | SW 18 | W 13 | W 13 | S 10 | W 12 | W 12 | W 12 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 14 | SW 16 | SW 13 | NNE 7 | SW 15 |
| kJ | 14 | 14 | 19 | 51 | 79 | 55 | 30 | 2 | 26 | 26 | 26 | 51 | 47 | 46 | 44 | 42 | 50 | 64 | 27 | 31 | 34 |
Wind waves Height (m) Direction Period (s) | — | — | NNE 6 | — | — | — | — | NNE 8 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 47 | — | — | — | — | 150 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 4 | 4 | 30 | 4 | 4 | 4 | 4 | 0 | 4 | 21 | 0 | 0 | 21 | 0 | 30 | 17 | 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.
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