Surf Forecasts:
Kua Bay surf forecast from 20 Sep 2026:
- Best quality surf: Friday 25 Sep, 2AM (local time) - 1ft (0.3m), 14s period, SW swell with glassy winds.
- Most powerful swell: Sunday 27 Sep, 2AM (local time) - 1.5ft (0.4m), 16s period, WNW swell with 100 kJ wave energy.
- Next surfable swell (1★+): Friday 25 Sep, 2AM (local time) - 1ft (0.3m), 14s 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 25) at 2AM. The primary swell is predicted to be 0.7m and 6s period with a secondary swell of 0.3m and 14s. 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 16s and forecast to arrive on Sunday (Sep 27) 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 1.1m 6s period and expected on Sunday (Sep 20) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 25th Sep) | 1ft (0.3m) 14s |
| Best Surf | 2AM (Fri 25th Sep) | 1ft (0.3m) 14s |
| Most Powerful | 2AM (Sun 27th Sep) | 1.5ft (0.4m) 16s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 29°C on Mon morning, min 26°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Thu night. Warm (max 28°C on Wed morning, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | ||||||||||||||
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) | SW 16 | NNE 6 | SW 15 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | N 13 | NNW 12 | NNW 11 | SW 17 | SW 16 | SW 16 | NE 6 | SW 14 | SW 14 | N 9 | N 9 | NE 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 0 | 0 | 33 | 0 | 51 | 49 | 0 | 31 | 49 | 40 | 46 | 40 | 39 | 46 | 0 | 31 | 7 | 6 | 35 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | cross-on | cross | on | cross-on | glassy | cross | glassy | glassy | cross-on | glassy | glassy | on | cross | glassy | glassy | glassy | cross |
High Tide | 11:51PM0.27m | 12:12PM0.65m | 00:49AM0.32m | 12:56PM0.68m | 1:27AM0.37m | 1:31PM0.70m | 1:59AM0.44m | 2:03PM0.71m | 2:31AM0.52m | 2:33PM0.71m | 3:03AM0.60m | 3:03PM0.68m | 3:37AM0.67m | ||||||
Low Tide | 4:05AM0.22m | 7:52PM0.19m | 5:34AM0.20m | 8:07PM0.16m | 6:35AM0.18m | 8:24PM0.14m | 7:25AM0.15m | 8:41PM0.11m | 8:10AM0.14m | 9:00PM0.08m | 8:55AM0.13m | 9:21PM0.06m | |||||||
 |  | |  |  | |  | | | | |  | | | |  |  | | | |
 | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — |
 | 6:22 | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — | — | 6:17 | — | — | 6:16 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 | 6 | 1 | — | — |
Temp °C | 27 | 28 | 28 | 27 | 29 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 27 |
Feels °C | 31 | 31 | 31 | 30 | 32 | 31 | 32 | 31 | 31 | 31 | 31 | 32 | 33 | 31 | 32 | 31 | 32 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 16 | NNE 6 | SSW 15 | NNE 6 | ENE 8 | SSW 13 | NNE 6 | NE 8 | NE 7 | NE 9 | NE 9 | NE 6 | NE 5 | SW 15 | NE 6 | SW 17 | NE 6 | NE 7 | SW 16 |
| kJ | 62 | 44 | 42 | 37 | 12 | 34 | 27 | 77 | 73 | 95 | 20 | 46 | 30 | 59 | 34 | 75 | 36 | 75 | 64 |
Swell 2 Height (m) Direction Period (s) | ENE 8 | SSW 15 | SW 15 | SSW 14 | SSW 13 | ENE 8 | NE 8 | N 13 | NNW 12 | NNW 11 | NNW 10 | NNW 11 | SW 16 | N 10 | SW 14 | SW 14 | SW 16 | SW 16 | ENE 8 |
| kJ | 13 | 42 | 33 | 38 | 35 | 7 | 16 | 31 | 49 | 40 | 22 | 22 | 39 | 8 | 52 | 29 | 63 | 62 | 11 |
Swell 3 Height (m) Direction Period (s) | S 16 | ENE 8 | W 13 | ENE 8 | SSW 14 | ENE 8 | SSW 13 | SSW 12 | SSW 12 | W 12 | SW 17 | SW 16 | N 10 | ENE 8 | ENE 8 | N 10 | N 9 | N 9 | SW 12 |
| kJ | 21 | 13 | 3 | 13 | 19 | 6 | 16 | 15 | 14 | 11 | 46 | 40 | 18 | 7 | 6 | 17 | 7 | 6 | 23 |
Wind waves Height (m) Direction Period (s) | NE 7 | — | NE 6 | — | NNE 6 | NNE 6 | — | — | — | — | NE 5 | — | — | NE 6 | — | NE 6 | — | — | NE 6 |
| kJ | 44 | — | 85 | — | 51 | 49 | — | — | — | — | 29 | — | — | 46 | — | 31 | — | — | 35 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 100 | 14 | 14 | 98 | 18 | 4 | 100 | 4 | 14 | 14 | 4 | 14 | 100 | 23 | 0 | 20 | 4 | 4 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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