Surf Forecasts:
Kua Bay surf forecast from 24 Aug 2026:
- Most powerful swell: Wednesday 26 Aug, 2PM (local time) - 3ft (0.9m), 6s period, NE swell with 49 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 Wednesday (Aug 26) at 2PM. 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 6s period and expected on Monday (Aug 24) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Wed 26th Aug) | 3ft (0.9m) 6s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Alright, I’m gonna level with you—right now at Kua Bay, it’s pretty flat. We’re looking at a long dry spell with no real surf to speak of until things maybe start to flicker toward the end of the first week of September. It’s a quiet stretch, so don’t rush to load the boards just yet.
Over the next several days, from Monday the 24th of August all the way through to Friday the 4th of September, pretty much every session is being written off with flat to tiny waves. You’ll see a few morsels here and there, like Wednesday the 26th morning offering 0.7m (about 2ft) from the NE with a period of 5 seconds and combined energy at a weak 37, but that’s still marked as poor surf conditions. The wind is often light and sometimes glassy, so it’d be a stunning day to be on the water—if there were any waves. There’s no swell to work with.
The one bright spot that might show up comes on Sunday the 6th of September in the afternoon. We’ve got a 0.3m (about 1ft) swell rolling in from the SW with a long period of 17 seconds, and combined energy hitting 47. It’s still tiny, but that long period groundswell suggests a little more shape and grunt, especially for a reef or point setup. The wind is light cross-shore, so conditions could be clean. That said, it’s not exactly a standout—just the best of a pretty lean outlook.
Kua Bay is an exposed spot, handling swell from the WNW direction best. The water temperature is sitting about average for this time of year, nothing wild to mention. Crowds here can turn up sometimes, but with this lack of surf, you’ll likely have the place to yourself.
If you’re chasing anything decent, it’s a waiting game. The early part of the window is a total bust, and even the later hints are marginal. Hang tight, and check back—forecasts can shift.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Mon night. Warm (max 29°C on Mon afternoon, min 25°C on Wed morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Thu afternoon. Warm (max 27°C on Thu afternoon, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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 10 | SW 14 | NW 11 | NW 10 | NE 6 | NE 6 | NNE 5 | NE 5 | NNE 6 | SSW 16 | NNE 5 | N 8 | NNE 5 | N 7 | NE 5 | W 10 | NNE 6 | NNE 6 | NNE 6 |
Wave Graph | |||||||||||||||||||
19 | 8 | 5 | 4 | 0 | 0 | 0 | 28 | 40 | 0 | 22 | 5 | 17 | 8 | 0 | 14 | 0 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | glassy | cross-on | glassy | cross-on | glassy | cross-off | cross | glassy | glassy | glassy | glassy | cross-on | cross | cross | on | glassy | glassy |
High Tide | 1:39AM0.32m | 2:15PM0.76m | 2:16AM0.36m | 2:46PM0.78m | 2:51AM0.41m | 3:15PM0.79m | 3:25AM0.47m | 3:42PM0.78m | 4:00AM0.52m | 4:09PM0.75m | 4:36AM0.58m | 4:36PM0.69m | |||||||
Low Tide | 9:01PM0.18m | 6:54AM0.12m | 9:20PM0.16m | 7:39AM0.10m | 9:39PM0.14m | 8:20AM0.08m | 9:58PM0.11m | 9:00AM0.08m | 10:18PM0.10m | 9:40AM0.10m | 10:39PM0.08m | 10:22AM0.13m | 11:01PM0.07m | ||||||
— | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
6:45 | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | |
mm | — | — | 1 | 2 | — | 1 | 2 | 2 | — | — | — | 1 | — | — | 1 | — | — | — | 2 |
Temp °C | 28 | 28 | 29 | 28 | 28 | 28 | 27 | 26 | 26 | 26 | 26 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 33 | 32 | 34 | 32 | 31 | 32 | 31 | 30 | 29 | 30 | 29 | 31 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | NNE 6 | NE 6 | NE 6 | NE 5 | NE 6 | NE 6 | NNE 5 | SSW 15 | SSW 17 | NNE 5 | SSW 16 | NNE 5 | SSW 15 | NNE 5 | NE 5 | SSW 13 | NNE 6 | NNE 6 | NNE 6 |
46 | 43 | 66 | 30 | 39 | 51 | 23 | 21 | 27 | 16 | 24 | 33 | 42 | 16 | 30 | 34 | 41 | 65 | 35 | |
Swell 2 Height (m) Direction Period (s) | WNW 10 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 14 | SSW 11 | SSW 14 | SSW 13 | SSW 12 | SSW 15 | N 8 | N 7 | NNE 7 | W 10 | SSW 13 | SSW 12 | SSW 17 |
19 | 18 | 35 | 32 | 30 | 14 | 21 | 12 | 18 | 17 | 15 | 44 | 5 | 8 | 9 | 7 | 16 | 15 | 27 | |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SW 14 | NW 11 | NW 10 | SSW 16 | SSW 16 | SSW 12 | W 11 | W 10 | SSW 16 | W 10 | N 8 | W 9 | SSW 14 | SSW 13 | SW 19 | ENE 7 | E 13 | E 13 |
20 | 8 | 5 | 4 | 25 | 24 | 14 | 9 | 8 | 25 | 8 | 5 | 2 | 39 | 18 | 14 | 5 | 14 | 13 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NE 5 | NNE 6 | — | NNE 5 | — | NNE 5 | — | — | NNE 6 | — | — | — |
— | — | — | — | — | — | — | 28 | 40 | — | 22 | — | 17 | — | — | 49 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 100 | 14 | 20 | 14 | 103 | 14 | 26 | 26 | 14 | 100 | 21 | 14 | 100 | 100 | 19 | 100 | 14 | 20 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
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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.











