Surf Forecasts:
Kua Bay surf forecast from 15 Sep 2026:
- Best quality surf: Friday 18 Sep, 8AM (local time) - 1.5ft (0.4m), 18s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 2PM (local time) - 1.5ft (0.4m), 18s period, SW swell with 109 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 8AM (local time) - 1.5ft (0.4m), 18s 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 Friday (Sep 18) at 8AM. The primary swell is predicted to be 0.4m and 18s 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 0.4m 18s and forecast to arrive on Wednesday (Sep 16) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 8s period and expected on Thursday (Sep 17) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Fri 18th Sep) | 1.5ft (0.4m) 18s |
| Best Surf | 8AM (Fri 18th Sep) | 1.5ft (0.4m) 18s |
| Most Powerful | 2PM (Wed 16th Sep) | 1.5ft (0.4m) 18s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
Short Range ForecastMostly dry. Warm (max 29°C on Wed morning, min 26°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Fri afternoon. Warm (max 28°C on Thu afternoon, min 26°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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) | SSW 22 | NNE 8 | SW 20 | NE 5 | WSW 8 | NNE 4 | NNE 5 | NNE 5 | NNE 8 | NE 8 | WSW 9 | SW 18 | WSW 9 | SW 16 | SW 16 | SW 16 | NE 6 | SSW 15 | SW 15 | SW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 0 | 0 | 21 | 7 | 13 | 27 | 13 | 0 | 0 | 7 | 0 | 8 | 0 | 0 | 0 | 32 | 0 | 33 | 33 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-on | cross | glassy | on | glassy | cross-on | cross | on | glassy | cross | cross-on | glassy | on | cross-off | cross | cross-on | glassy | glassy |
High Tide | 5:21PM0.47m | 6:31AM0.69m | 5:43PM0.41m | 7:20AM0.66m | 5:58PM0.35m | 8:22AM0.62m | 9:47AM0.61m | 11:11AM0.62m | 11:51PM0.27m | 12:12PM0.65m | 00:49AM0.32m | |||||||||
Low Tide | 11:26PM0.09m | 1:09PM0.27m | 11:50PM0.11m | 2:29PM0.31m | 00:17AM0.14m | 00:53AM0.18m | 2:02AM0.21m | 7:43PM0.22m | 4:05AM0.22m | 7:52PM0.19m | ||||||||||
 |  | | | | | | | | |  | |  | |  |  |  | | | | |
 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — |
mm | — | — | — | — | — | — | — | — | — | — | 4 | — | 4 | 3 | — | 1 | — | — | — | — |
Temp °C | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 28 | 29 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 |
Feels °C | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 33 | 31 | 31 | 32 | 30 | 30 | 31 | 30 | 31 | 31 | 30 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | SW 18 | SW 18 | NNE 8 | NNE 8 | NE 8 | NE 8 | NE 5 | NE 7 | NE 6 | NE 5 | NE 6 | SW 16 | NNE 6 | NNE 6 | ENE 8 |
| kJ | 26 | 42 | 41 | 24 | 50 | 79 | 152 | 26 | 85 | 160 | 84 | 23 | 77 | 31 | 22 | 54 | 62 | 27 | 40 | 13 |
Swell 2 Height (m) Direction Period (s) | NNE 4 | SSW 21 | SW 20 | SW 19 | SW 19 | NE 7 | NNE 7 | SW 17 | ENE 10 | SW 16 | SW 17 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | ENE 8 | ENE 8 | ENE 8 | SSW 14 |
| kJ | 6 | 45 | 98 | 96 | 94 | 14 | 10 | 75 | 38 | 64 | 148 | 78 | 145 | 127 | 64 | 64 | 13 | 13 | 12 | 37 |
Swell 3 Height (m) Direction Period (s) | SSW 22 | SSW 13 | NNE 10 | SW 12 | WSW 8 | SW 8 | NNE 9 | ENE 10 | SW 16 | SSW 18 | WSW 9 | NNE 7 | WSW 9 | NNE 7 | ENE 8 | SSW 16 | S 16 | SSW 15 | SW 15 | SW 14 |
| kJ | 46 | 17 | 9 | 6 | 7 | 3 | 8 | 10 | 65 | 33 | 7 | 16 | 8 | 9 | 13 | 49 | 21 | 42 | 33 | 33 |
Wind waves Height (m) Direction Period (s) | — | — | — | NE 5 | — | NNE 4 | NNE 5 | NNE 5 | — | — | — | — | — | — | — | — | NE 6 | — | — | NNE 5 |
| kJ | — | — | — | 21 | — | 13 | 27 | 13 | — | — | — | — | — | — | — | — | 32 | — | — | 23 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 98 | 98 | 14 | 30 | 4 | 20 | 30 | 4 | 19 | 97 | 30 | 4 | 26 | 28 | 4 | 100 | 39 | 4 | 100 | 26 |
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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