Surf Forecasts:
Kua Bay surf forecast from 17 Jul 2026:
- Best quality surf: Friday 17 Jul, 2AM (local time) - 2.5ft (0.7m), 14s period, W swell with glassy winds.
- Most powerful swell: Friday 17 Jul, 2AM (local time) - 2.5ft (0.7m), 14s period, W swell with 206 kJ wave energy.
- Next surfable swell (1★+): Friday 17 Jul, 2AM (local time) - 2.5ft (0.7m), 14s 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 17) at 2AM. The primary swell is predicted to be 0.7m and 14s 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 0.7m 14s and forecast to arrive on Friday (Jul 17) 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 7s period and expected on Saturday (Jul 18) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 17th Jul) | 2.5ft (0.7m) 14s |
| Best Surf | 2AM (Fri 17th Jul) | 2.5ft (0.7m) 14s |
| Most Powerful | 2AM (Fri 17th Jul) | 2.5ft (0.7m) 14s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Rusty here, checkin' in on Kua Bay for the next 16 days. Honestly, it's a tough outlook – there's barely any surf worth paddling out for. Kua Bay is usually fairly consistent, but this stretch is looking mostly flat or tiny. The first bit of action comes Friday 17 July morning: a weak 2.3ft swell from the west with a 14-second period, combined energy at 203. But the wind is cross-onshore, light, so it's messy and only just surfable – marginal at best. That afternoon drops to 2.0ft and the wind goes onshore, so it's a no-go.
From Saturday 18 July through the rest of the week, the swell fades fast. Saturday morning sees 1.6ft, but cross-on wind, and by Saturday afternoon there's a tiny 1.6ft with clean cross-off wind – still only 87 combined energy, not worth the drive. Sunday through Tuesday the swell shrinks to nothing, with flat conditions and occasional light winds. Wednesday 22 July through Thursday 23 July are completely flat.
There's a faint pulse around Friday 24 July morning: 0.3ft from the southwest with a 15-second period, but combined energy is just 8, and it's cross-onshore. That afternoon goes glassy but no swell. Another tiny ripple shows up Tuesday 28 July afternoon: 0.3ft west, 13s, glassy, but only 3 energy – hardly a wave.
The best of a very poor bunch might be Friday 31 July: a 1.0ft southwest swell with a 16-second period, combining for 41 energy in the morning (cross-onshore) and then glass
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 28°C on Fri afternoon, min 25°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Mon morning. Warm (max 28°C on Tue afternoon, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||
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 14 | W 14 | W 13 | W 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | W 11 | NE 6 | SSW 26 | SSW 24 | SSW 23 | SSW 22 |
Wave Graph  | |||||||||||||||||||
 kJ | 206 | 203 | 146 | 138 | 89 | 87 | 57 | 50 | 29 | 29 | 27 | 13 | 13 | 9 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | on | cross-off | cross-on | cross-off | cross | cross | cross | cross-off | cross | cross-off | glassy | cross-on | cross-off | cross-on | cross-on | cross | glassy |
High Tide | 6:13AM0.45m | 6:17PM0.77m | 7:09AM0.48m | 6:50PM0.67m | 8:11AM0.52m | 7:20PM0.57m | 9:19AM0.56m | 7:48PM0.48m | 10:31AM0.59m | 8:18PM0.40m | 11:39AM0.63m | 9:15PM0.33m | |||||||
Low Tide | 00:39AM0.08m | 11:32AM0.14m | 1:11AM0.09m | 12:27PM0.22m | 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 | ||||||
 |  |  |  | | |  | | | |  | | | | | | | | | |
 | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — |
 | 7:06 | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | 1 | — | — | — | — | — | — | — | 2 |
Temp °C | 26 | 27 | 28 | 27 | 28 | 27 | 26 | 26 | 26 | 25 | 26 | 27 | 26 | 27 | 28 | 27 | 27 | 27 | 25 |
Feels °C | 29 | 31 | 30 | 30 | 31 | 30 | 30 | 30 | 28 | 29 | 28 | 29 | 28 | 29 | 29 | 29 | 29 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 6 | NE 8 | NNE 8 | NE 7 | NNE 7 | NNE 7 | NE 6 | NE 7 | NE 7 | NE 6 | NNE 5 |
| kJ | 59 | 59 | 76 | 59 | 77 | 96 | 61 | 66 | 47 | 57 | 37 | 42 | 42 | 31 | 32 | 38 | 37 | 52 | 16 |
Swell 2 Height (m) Direction Period (s) | W 14 | W 14 | W 14 | W 14 | W 13 | W 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | NNE 5 | WNW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 16 | SSW 23 | SSW 22 |
| kJ | 206 | 203 | 146 | 138 | 89 | 87 | 57 | 50 | 29 | 29 | 27 | 12 | 13 | 14 | 13 | 13 | 48 | 106 | 91 |
Swell 3 Height (m) Direction Period (s) | SW 12 | SSW 16 | SW 12 | SSW 15 | SW 15 | S 13 | SSW 12 | SW 11 | SW 11 | SSW 12 | SSW 11 | WNW 12 | SSW 13 | W 11 | SSW 16 | SSW 26 | SSW 24 | SSW 11 | SSW 17 |
| kJ | 22 | 25 | 21 | 21 | 8 | 3 | 14 | 5 | 5 | 13 | 11 | 13 | 17 | 9 | 26 | 65 | 55 | 11 | 28 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 4 | 14 | 0 | 30 | 0 | 4 | 100 | 100 | 96 | 98 | 100 | 14 | 98 | 26 | 20 | 100 | 103 | 14 |
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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