Surf Forecasts:
Kua Bay surf forecast from 30 Aug 2026:
- Most powerful swell: Friday 4 Sep, 11AM (local time) - 3ft (0.9m), 6s period, NE swell with 52 kJ wave energy.
Best Forecast Surf Conditions for Kua Bay this week:
The most powerful waves expected at Kua Bay in the next 16 days are 0.9m 6s and forecast to arrive on Friday (Sep 04) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 7s period and expected on Saturday (Sep 05) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Fri 4th Sep) | 3ft (0.9m) 6s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's cookin' for Kua Bay over this stretch.
Right off the bat, it's a quiet spell. We're looking at a long, flat start. Nothing worth paddling out for from Sunday the 30th of August right through the first week and into the start of the second. Lots of glassy mornings and light winds, but with no swell to push around, it's just a lake out there. That's a solid stretch of flat days.
The first real whisper of energy shows up on Thursday the 10th of September. We've got a tiny pulse of about 1 ft from the SW with a very long period of 17 seconds, but the combined energy is weak. The wind is light cross-onshore, so it's not going to be clean, and the swell is too small to do much. It's a tease at best.
The best conditions of the whole outlook actually show up on Saturday the 13th of September. The morning has glassy conditions with a 1 ft swell from the west at 11 seconds. The combined energy is very weak, so it's not going to have any power. It's a small, clean dribbler. The afternoon holds a similar 1 ft from the WNW at 12 seconds with light cross-onshore wind. The energy is still very weak. It's small, it's clean, and for a longboard or a foiler, you might have a fun little session, but there's no push or power behind it.
Honestly, there are no standouts here. The whole 16-day window is dominated by flat spells and barely-rideable dribbles. With mostly poor surf conditions and no real quality on offer, this is a grim run for Kua Bay. The water temps are about average for the time of year, but that's small comfort.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sun morning, min 25°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Wed night. Warm (max 29°C on Thu afternoon, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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 17 | NNE 7 | NNE 7 | SW 15 | SW 15 | NNE 8 | W 12 | NNE 7 | NNE 6 | W 11 | NE 8 | W 10 | NNE 8 | W 9 | W 9 | W 9 | NE 6 | SW 13 | NE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 44 | 0 | 0 | 36 | 33 | 0 | 12 | 0 | 0 | 10 | 0 | 8 | 0 | 2 | 2 | 2 | 52 | 7 | 0 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross | glassy | cross-on | cross | glassy | on | glassy | glassy | on | cross | glassy | cross-on | cross-on | glassy | cross-on | cross-on | cross-off |
High Tide | 5:14AM0.62m | 5:03PM0.63m | 5:56AM0.66m | 5:30PM0.55m | 6:44AM0.67m | 5:58PM0.47m | 7:43AM0.68m | 6:27PM0.39m | 8:58AM0.68m | 6:59PM0.32m | 10:26AM0.70m | 9:25PM0.26m | |||||||
Low Tide | 11:01PM0.07m | 11:07AM0.17m | 11:24PM0.06m | 11:58AM0.22m | 11:50PM0.07m | 1:00PM0.27m | 00:21AM0.07m | 2:28PM0.32m | 00:59AM0.09m | 5:04PM0.31m | 1:54AM0.12m | 7:14PM0.25m | 3:19AM0.14m | ||||||
 |  |  | | | | | | |  | | |  | | | | | | | |
 | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — |
 | 6:40 | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 27 | 28 | 28 | 27 | 28 | 27 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 27 | 27 | 27 | 28 |
Feels °C | 30 | 30 | 30 | 31 | 31 | 29 | 29 | 30 | 31 | 31 | 30 | 31 | 31 | 30 | 29 | 28 | 30 | 28 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 8 | SSW 14 | NNE 7 | NNE 6 | NNE 8 | NE 8 | NE 7 | NNE 8 | SSW 14 | NE 8 | SSW 13 | ENE 8 | S 13 | N 6 |
| kJ | 70 | 62 | 81 | 56 | 98 | 98 | 20 | 74 | 53 | 106 | 50 | 107 | 50 | 40 | 15 | 17 | 12 | 13 | 31 |
Swell 2 Height (m) Direction Period (s) | SW 17 | SSW 16 | SSW 15 | SW 15 | SW 15 | NE 8 | W 12 | ENE 8 | ENE 8 | SSW 16 | N 7 | SSW 15 | NE 5 | W 9 | SSW 14 | W 9 | S 13 | E 14 | E 14 |
| kJ | 44 | 25 | 22 | 36 | 33 | 29 | 12 | 25 | 26 | 51 | 24 | 45 | 9 | 2 | 19 | 2 | 14 | 4 | 14 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | S 12 | S 12 | W 11 | W 11 | SSW 14 | S 20 | SSW 18 | NE 8 | W 11 | SSW 16 | W 10 | SSW 15 | E 12 | W 9 | E 14 | E 13 | SW 13 | S 13 |
| kJ | 14 | 11 | 11 | 9 | 2 | 20 | 7 | 31 | 14 | 10 | 50 | 8 | 42 | 3 | 2 | 4 | 14 | 7 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NE 8 | — | — | — | — | — | — | NNE 7 | NNE 6 | NNE 6 | NE 6 | NE 6 | NE 7 |
| kJ | — | — | — | — | — | — | 113 | — | — | — | — | — | — | 93 | 42 | 67 | 52 | 78 | 55 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 100 | 100 | 4 | 4 | 103 | 4 | 98 | 4 | 4 | 100 | 39 | 39 | 100 | 14 | 101 | 14 | 14 | 4 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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.
Nearest