Surf Forecasts:
Kua Bay surf forecast from 6 Sep 2026:
- Best quality surf: Monday 7 Sep, 8PM (local time) - 5.5ft (1.7m), 14s period, WSW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 6ft (1.9m), 13s period, WSW swell with 1,245 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 11PM (local time) - 3.5ft (1.0m), 12s 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 Sunday (Sep 06) at 11PM. The primary swell is predicted to be 1.0m and 12s 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 1.9m 13s and forecast to arrive on Tuesday (Sep 08) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 11s period and expected on Sunday (Sep 06) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 6th Sep) | 3.5ft (1.0m) 12s |
| Best Surf | 8PM (Mon 7th Sep) | 5.5ft (1.7m) 14s |
| Most Powerful | 2AM (Tue 8th Sep) | 6ft (1.9m) 13s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Alright folks, this is Rusty. Let's have a look at what Kua Bay is cooking up for us.
First up, the water temp’s sitting at a warm 82°. That’s a touch warmer than average for this time of year, by about 2°. Feels nice.
Look, I’m gonna be straight with you – for the first week or so, it’s a bit of a snoozer. Sunday the 6th is totally flat with poor conditions, so don't even bother. Monday the 7th shows a tiny bump of swell, but it’s only about 3ft at best and the wind is messy cross-onshore. The wave energy is moderate (466), but the surf forecast is marginal. Not worth paddling out for.
Now, Tuesday the 8th is the one bright spot in this entire outlook. Tuesday morning is where it’s at. We’re looking at a clean 5ft swell from the WSW with an 11-second period. That’s a solid groundswell with decent shape. The winds are light and cross-offshore, leaving the surface clean. Wave energy is moderate to strong (531). This is the kind of window you’d want to be a little early for because the crowds can show up *sometimes*. This is easily the standout of the whole forecast. After that morning, the swell drops fast and the winds get sloppy again.
From Wednesday the 9th all the way through to Friday the 18th, it’s pretty dire. We're talking flat spells, weak energy readings, and lots of cross-on or glassy but tiny surf. There's a very small, weak bump on the 18th from the NNE, but with a period of only 6 seconds, it’s just windslop. That’s over a week of nothing worth mentioning. Expect a long gap with no surf.
If you can only paddle out once, make it Tuesday the 8th, early. The rest of this run looks like it’s better for a snorkel than a surf.
- Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Sun afternoon. Warm (max 29°C on Tue morning, min 26°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Wed night. Warm (max 28°C on Wed morning, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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) | SW 11 | SW 12 | SW 13 | SW 14 | SW 14 | WSW 13 | WSW 11 | W 11 | W 10 | WNW 9 | W 7 | NE 7 | SW 16 | SW 18 | SW 10 | SW 9 | SW 9 | SW 15 | W 12 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 444 | 276 | 765 | 1245 | 531 | 595 | 235 | 61 | 23 | 0 | 42 | 49 | 15 | 13 | 12 | 0 | 11 | 29 | 29 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-on | cross-on | cross-off | cross-off | cross | glassy | cross-on | cross-off | glassy | on | cross | glassy | cross | cross-off | glassy | cross-on | glassy | glassy |
High Tide | 12:47PM0.78m | 1:07AM0.33m | 1:36PM0.81m | 1:57AM0.40m | 2:18PM0.82m | 2:40AM0.48m | 2:55PM0.80m | 3:19AM0.56m | 3:28PM0.76m | 3:57AM0.62m | 4:00PM0.70m | 4:35AM0.67m | 4:29PM0.63m | ||||||||
Low Tide | 8:14PM0.15m | 6:18AM0.11m | 8:41PM0.12m | 7:21AM0.09m | 9:06PM0.09m | 8:14AM0.08m | 9:31PM0.07m | 9:04AM0.09m | 9:55PM0.06m | 9:51AM0.11m | 10:19PM0.05m | 10:36AM0.14m | 10:41PM0.06m | ||||||||
 |  |  | | |  |  | | | | |  | |  | | | |  | | | | |
 | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | 6:34 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — |
mm | — | 2 | 1 | — | — | — | — | — | — | — | — | 2 | — | 1 | 1 | — | — | — | — | — | — |
Temp °C | 28 | 28 | 27 | 28 | 28 | 28 | 29 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 26 | 26 | 26 | 27 | 27 | 26 |
Feels °C | 31 | 31 | 31 | 31 | 30 | 32 | 31 | 30 | 32 | 31 | 31 | 32 | 31 | 32 | 31 | 29 | 29 | 30 | 29 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 12 | SW 13 | SW 12 | SW 14 | WSW 13 | WSW 11 | W 11 | W 10 | WNW 9 | NE 6 | NE 7 | SW 16 | SW 18 | NNE 7 | NNE 8 | SW 15 | NNE 7 | SW 15 | SW 14 | NNE 8 |
| kJ | 182 | 244 | 444 | 190 | 765 | 1245 | 531 | 595 | 235 | 61 | 68 | 55 | 42 | 49 | 37 | 58 | 57 | 48 | 60 | 29 | 100 |
Swell 2 Height (m) Direction Period (s) | NE 6 | NE 6 | NE 7 | SW 14 | NE 7 | NE 11 | NE 11 | NE 10 | NE 8 | NE 8 | W 7 | SW 8 | SW 8 | SSW 8 | SW 16 | SW 16 | ENE 11 | SW 15 | ENE 10 | ENE 10 | SW 14 |
| kJ | 39 | 58 | 46 | 276 | 46 | 147 | 168 | 115 | 57 | 48 | 23 | 14 | 9 | 6 | 68 | 65 | 24 | 57 | 10 | 10 | 29 |
Swell 3 Height (m) Direction Period (s) | E 12 | ENE 12 | ENE 12 | NE 7 | ENE 12 | SSW 15 | SSW 15 | SSW 14 | SW 8 | SW 8 | SW 8 | SSW 13 | SSW 13 | SSW 13 | SW 10 | SW 9 | SW 9 | ENE 11 | W 12 | W 12 | ENE 10 |
| kJ | 73 | 47 | 81 | 52 | 78 | 93 | 84 | 81 | 33 | 15 | 14 | 33 | 16 | 16 | 15 | 13 | 12 | 23 | 11 | 11 | 9 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | NE 7 | NNE 4 | — | — | NNE 7 | — | NNE 8 | NNE 8 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 57 | 25 | — | — | 70 | — | 74 | 98 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 28 | 30 | 0 | 30 | 4 | 0 | 0 | 32 | 0 | 30 | 26 | 20 | 30 | 4 | 30 | 30 | 30 | 14 | 30 | 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