Surf Forecasts:
Kua Bay surf forecast from 14 Aug 2026:
- Best quality surf: Friday 14 Aug, 2PM (local time) - 5ft (1.5m), 6s period, NE swell with glassy winds.
- Most powerful swell: Friday 14 Aug, 2PM (local time) - 5ft (1.5m), 6s period, NE swell with 133 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 2PM (local time) - 5ft (1.5m), 6s period with NE 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 (Aug 14) at 2PM. The primary swell is predicted to be 1.5m and 6s period with a secondary swell of 0.2m and 12s. 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 1.5m 6s and forecast to arrive on Friday (Aug 14) at 2PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 8s period and expected on Saturday (Aug 15) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Fri 14th Aug) | 5ft (1.5m) 6s |
| Best Surf | 2PM (Fri 14th Aug) | 5ft (1.5m) 6s |
| Most Powerful | 2PM (Fri 14th Aug) | 5ft (1.5m) 6s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Alright, let’s talk about Kua Bay.
Honestly, the next couple of weeks are looking pretty bleak for surf. We’ve got a whole lot of flatness and tiny, weak energy headed our way. The first week through the 21st is basically a write-off, with nothing but knee-high dribble and poor conditions. It’s one of those stretches where you’re better off finding something else to do. We’re talking a solid week of no real waves.
There is a pulse of energy showing up on the 20th with a 1ft swell from the southwest, but it’s a long-period groundswell at 18 seconds and it’s crossing right into the beach. The wind will be cross-onshore in the morning, but it does go glassy that afternoon. The energy is still weak though. It’s tantalizing but just not enough.
The 22nd has a bit of similar, small SW swell, but nothing that’s going to get your heart racing. The whole setup just doesn’t want to cooperate, with the swell direction never really lining up with the bay's WNW preference.
We finally get a little bump of energy on the 27th. It’s still small, with a 3ft swell from the NE, but the period is a short 6 seconds. The combined energy is moderate, but that short period swell is just going to be messy. The wind is light cross-onshore, so it’ll be a bit bumpy. It’s still not the day to drop everything for. The rest of that final week stays small and weak.
So, look, I wouldn’t be planning any dawn patrols for a while. Kua Bay needs a proper pulse of WNW groundswell and this forecast just doesn’t have it. It’s flat, it’s small, and the few pulses of energy that do show up are weak and poorly aligned.
Rusty.
Short Range ForecastHeavy rain (total 32mm), heaviest during Sat night. Warm (max 29°C on Fri morning, min 24°C on Sat night). Winds increasing (calm on Fri afternoon, strong winds from the SSE by Sat night). | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Mon afternoon. Warm (max 28°C on Mon morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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) | NNE 5 | NE 6 | W 12 | W 11 | W 14 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 13 | WNW 12 | WNW 12 | SW 16 | SW 18 | SW 17 | W 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 90 | 122 | 12 | 21 | 16 | 34 | 32 | 49 | 27 | 25 | 24 | 25 | 25 | 25 | 33 | 48 | 28 | 41 | 49 | 47 | 21 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross | glassy | cross-on | cross-off | cross-on | cross-on | glassy | cross | cross-on | off | cross-on | cross | cross-off | cross | cross-off | glassy | on | cross-off | on |
High Tide | 5:06PM0.76m | 5:44AM0.58m | 5:36PM0.67m | 6:30AM0.60m | 6:02PM0.58m | 7:19AM0.61m | 6:25PM0.49m | 8:16AM0.61m | 6:42PM0.41m | 9:26AM0.61m | 10:49AM0.62m | ||||||||||
Low Tide | 10:38AM0.10m | 11:41PM0.07m | 11:27AM0.17m | 00:06AM0.08m | 12:18PM0.24m | 00:32AM0.09m | 1:18PM0.30m | 00:58AM0.11m | 2:41PM0.35m | 1:28AM0.14m | 2:09AM0.16m | 3:15AM0.18m | |||||||||
 | |  |  | | |  | |  | | | | | |  | | | |  | | | |
 | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:49 | — |
mm | — | — | 1 | 2 | 1 | 22 | 1 | 2 | 3 | 1 | 6 | 2 | 2 | 2 | — | — | — | 1 | — | — | 3 |
Temp °C | 29 | 29 | 27 | 29 | 29 | 29 | 28 | 29 | 27 | 28 | 27 | 27 | 26 | 26 | 26 | 27 | 28 | 26 | 28 | 28 | 27 |
Feels °C | 30 | 33 | 31 | 33 | 31 | 25 | 31 | 32 | 31 | 32 | 30 | 31 | 30 | 30 | 30 | 30 | 31 | 29 | 32 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | ENE 10 | NNE 8 | NE 8 | NE 7 | NE 6 | NE 6 | WNW 11 | NE 8 | NNE 5 | NE 5 | NE 5 | NNE 7 | NNE 6 | NE 7 | NNE 6 | NNE 7 |
| kJ | 41 | 40 | 36 | 35 | 35 | 142 | 114 | 95 | 75 | 46 | 47 | 25 | 9 | 17 | 12 | 13 | 29 | 27 | 46 | 36 | 27 |
Swell 2 Height (m) Direction Period (s) | W 11 | W 12 | W 12 | W 11 | W 11 | SSW 6 | SSW 6 | SW 6 | WNW 12 | WNW 11 | WNW 11 | NE 8 | WNW 11 | WNW 11 | WNW 13 | WNW 12 | WNW 12 | WNW 11 | SW 18 | WNW 11 | SW 16 |
| kJ | 10 | 24 | 11 | 21 | 10 | 8 | 15 | 18 | 27 | 25 | 24 | 9 | 25 | 25 | 33 | 48 | 28 | 25 | 49 | 23 | 69 |
Swell 3 Height (m) Direction Period (s) | S 18 | SW 17 | SW 17 | W 15 | W 14 | WNW 13 | WNW 13 | WNW 12 | WSW 5 | S 12 | S 14 | S 13 | SSW 17 | ENE 7 | E 8 | NNE 7 | ENE 6 | SW 16 | WNW 11 | SW 17 | W 11 |
| kJ | 6 | 12 | 12 | 4 | 16 | 34 | 32 | 49 | 2 | 11 | 16 | 14 | 28 | 5 | 1 | 5 | 4 | 41 | 24 | 47 | 21 |
Wind waves Height (m) Direction Period (s) | NNE 5 | NE 6 | NE 6 | NE 8 | NE 8 | NNE 7 | — | — | — | — | — | NNE 5 | NNE 5 | — | — | — | — | — | — | — | — |
| kJ | 90 | 122 | 153 | 329 | 479 | 142 | — | — | — | — | — | 17 | 13 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 19 | 0 | 14 | 4 | 24 | 446 | 100 | 20 | 19 | 100 | 100 | 19 | 100 | 100 | 26 | 98 | 100 | 22 | 30 | 22 | 20 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.
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