Surf Forecasts:
Kua Bay surf forecast from 13 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 11PM (local time) - 1.5ft (0.4m), 13s period, WNW swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 11PM (local time) - 5ft (1.5m), 6s period, NE swell with 143 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 11PM (local time) - 1.5ft (0.4m), 13s 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 Tuesday (Aug 18) at 11PM. The primary swell is predicted to be 0.4m and 13s period with a secondary swell of 0.5m and 5s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kua Bay in the next 16 days are 1.5m 6s and forecast to arrive on Friday (Aug 14) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 7s period and expected on Saturday (Aug 15) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 18th Aug) | 1.5ft (0.4m) 13s |
| Best Surf | 11PM (Tue 18th Aug) | 1.5ft (0.4m) 13s |
| Most Powerful | 11PM (Fri 14th Aug) | 5ft (1.5m) 6s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat morning. Warm (max 29°C on Thu morning, min 25°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Sun afternoon. Warm (max 28°C on Sun night, min 25°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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) | WNW 12 | NNE 6 | NNE 6 | NNE 6 | W 12 | W 12 | NE 8 | NE 7 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | W 13 | WNW 13 | WNW 12 | WNW 12 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 28 | 57 | 40 | 49 | 24 | 11 | 0 | 0 | 34 | 31 | 49 | 27 | 25 | 24 | 25 | 24 | 31 | 55 | 48 | 48 | 41 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | glassy | cross-off | cross-off | cross-off | cross-on | cross-on | glassy | cross-on | glassy | cross-off | cross-on | cross-off | cross-off | cross | cross-off | glassy |
High Tide | 4:34PM0.83m | 5:00AM0.54m | 5:06PM0.76m | 5:44AM0.58m | 5:36PM0.67m | 6:30AM0.60m | 6:02PM0.58m | 7:19AM0.61m | 6:25PM0.49m | 8:16AM0.61m | 6:42PM0.41m | 9:26AM0.61m | |||||||||
Low Tide | 9:51AM0.05m | 11:15PM0.07m | 10:38AM0.10m | 11:41PM0.07m | 11:27AM0.17m | 00:06AM0.08m | 12:18PM0.24m | 00:32AM0.09m | 1:18PM0.30m | 00:58AM0.11m | 2:41PM0.35m | 1:28AM0.14m | 2:09AM0.16m | ||||||||
 |  |  | | |  |  | | |  |  |  | | |  | | | | | | | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — |
mm | — | — | — | — | — | — | 4 | — | — | — | 1 | 1 | — | 2 | 2 | 2 | 1 | — | — | — | 2 |
Temp °C | 29 | 28 | 27 | 28 | 28 | 28 | 26 | 28 | 28 | 26 | 27 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 29 | 30 | 30 | 31 | 28 | 31 | 32 | 28 | 30 | 32 | 31 | 31 | 32 | 30 | 30 | 30 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 15 | SSW 14 | NE 8 | SSW 14 | SSW 14 | NE 8 | NE 7 | NE 8 | NE 8 | NE 8 | NE 7 | NE 6 | NE 5 | NNE 5 | NNE 4 | NNE 5 | WNW 13 | WNW 12 | WNW 12 | NE 7 |
| kJ | 48 | 44 | 70 | 15 | 40 | 36 | 178 | 156 | 233 | 95 | 125 | 84 | 45 | 29 | 15 | 7 | 15 | 55 | 48 | 48 | 46 |
Swell 2 Height (m) Direction Period (s) | WNW 12 | W 12 | ENE 8 | SSW 14 | W 12 | W 12 | ENE 9 | ENE 9 | WNW 13 | SSW 7 | SW 6 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | ENE 7 | NNE 8 | NNE 7 | WNW 11 |
| kJ | 28 | 25 | 6 | 41 | 24 | 11 | 29 | 62 | 34 | 21 | 11 | 27 | 25 | 24 | 25 | 24 | 24 | 5 | 6 | 11 | 25 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SSW 12 | W 12 | W 11 | SW 17 | E 10 | SSW 13 | SSW 13 | S 13 | WNW 13 | WNW 12 | SW 5 | S 12 | NE 8 | NE 8 | NE 8 | W 13 | S 13 | SSW 16 | SW 16 | SW 16 |
| kJ | 28 | 28 | 11 | 10 | 12 | 8 | 35 | 35 | 14 | 31 | 49 | 5 | 11 | 15 | 10 | 9 | 31 | 3 | 25 | 42 | 41 |
Wind waves Height (m) Direction Period (s) | NE 5 | NNE 6 | NNE 6 | NNE 6 | NE 6 | NE 7 | — | — | — | — | — | — | — | — | — | — | — | NNE 5 | NNE 6 | NNE 4 | — |
| kJ | 25 | 57 | 40 | 49 | 85 | 163 | — | — | — | — | — | — | — | — | — | — | — | 9 | 12 | 10 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 19 | 4 | 100 | 14 | 4 | 14 | 26 | 14 | 20 | 20 | 14 | 100 | 4 | 19 | 100 | 100 | 4 | 30 | 0 | 4 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.
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