Surf Forecasts:
Kua Bay surf forecast from 1 Aug 2026:
- Most powerful swell: Saturday 1 Aug, 8AM (local time) - 1ft (0.3m), 14s period, SW swell with 33 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 0.3m 14s and forecast to arrive on Saturday (Aug 01) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Saturday (Aug 01) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Sat 1st Aug) | 1ft (0.3m) 14s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Right off the bat, I gotta be straight with you – the next 16 days are looking pretty flat for Kua Bay. We’ve got a long stretch of hardly any swell, so don’t be in a rush to grab your board.
Looking at the whole period, there’s a massive gap of nothing worth paddling out for. From now until almost the middle of the month, the waves are tiny, and the energy is practically non-existent. The water temp is sitting at about 81°, which is pretty much what you’d expect for this time of year, no real surprises there.
The first real hint of something happening doesn’t show up until the 9th of August. On the Sunday afternoon, we finally see a bit of pulse, with a 2ft swell rolling in from the west. The period is a decent 14 seconds, giving it a bit of shape, and the combined energy (103) is just enough to get your attention. The wind is glassy, which is a massive positive – it’ll be clean as a whistle. But honestly, it’s still tiny, so don’t expect much.
The standout, if you can call it that, comes on Thursday the 13th of August. The morning looks best with a 3ft west swell and a 13-second period. The energy jumps up to a moderate 365, making it the most powerful we’ll see. The wind is light cross-onshore, so it won’t be perfect, but it’s manageable. By the afternoon, it drops a bit to 3ft from the WNW with a 13-second period, still a moderate energy (290). This is the best we’ve got on offer, but it’s still marginal.
The 14th of August has a bit of a pulse in the afternoon, with 2ft of west swell and a clean cross-offshore wind, but the energy is low. The 15th of August morning sees a 3ft west swell, but the wind is a bit stronger, creating some chop.
Kua Bay is an exposed spot, and it’s fairly consistent on the whole, but this is just a dead run. The swell direction is from the west and north-west, which is what the spot likes, but there’s just not enough size or power. For a beach break like this, with such small, weak swell, it’s barely worth a look. If you’re desperate for a splash, the Thursday the 13th morning is your best bet, but keep your expectations on the floor. Long-range, this is all still a bit of a gamble.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sat afternoon, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Thu morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | |||||||||||||||
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) | N 8 | SW 14 | SW 14 | N 10 | N 7 | N 9 | W 11 | N 7 | W 12 | N 6 | W 11 | W 13 | W 13 | W 12 | W 12 | W 13 | W 12 | W 12 | W 13 | W 13 | NE 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 29 | 29 | 16 | 31 | 6 | 10 | 4 | 11 | 7 | 10 | 13 | 12 | 11 | 11 | 13 | 12 | 11 | 14 | 30 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | cross-on | glassy | glassy | cross-on | cross | glassy | cross-on | cross-on | cross-off | cross-on | cross | glassy | cross-on | cross-on | glassy | on | glassy | glassy |
High Tide | 5:39PM0.72m | 6:24AM0.51m | 6:05PM0.65m | 7:15AM0.55m | 6:33PM0.57m | 8:16AM0.59m | 7:03PM0.49m | 9:30AM0.63m | 7:38PM0.40m | 10:50AM0.68m | 8:46PM0.32m | 12:04PM0.74m | 11:08PM0.28m | ||||||||
Low Tide | 11:05AM0.16m | 00:23AM0.10m | 11:52AM0.22m | 00:48AM0.09m | 12:48PM0.28m | 1:18AM0.09m | 2:06PM0.34m | 1:54AM0.09m | 4:10PM0.36m | 2:41AM0.10m | 6:56PM0.32m | 3:45AM0.09m | 8:07PM0.25m | ||||||||
 |  |  | | | | | |  | | | | | | | | | | | | | |
 | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — |
 | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:59 | — | — | 6:58 | — | — | 6:58 | — | — | 6:57 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 28 | 27 | 27 | 28 | 28 | 27 |
Feels °C | 29 | 30 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 31 | 28 | 31 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 8 | NNE 8 | NNE 6 | NE 8 | NNE 6 | NNE 6 | NNE 5 | NNE 6 | ENE 11 | NNE 6 | ENE 10 | NE 9 | NE 9 | NNE 5 | NE 8 | NE 5 | NE 5 | NE 5 | NE 6 | NE 5 |
| kJ | 77 | 128 | 103 | 44 | 50 | 31 | 25 | 17 | 31 | 47 | 12 | 39 | 53 | 40 | 8 | 10 | 30 | 14 | 20 | 60 | 23 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | NE 8 | N 7 | NE 8 | NE 8 | NE 8 | ENE 11 | NE 6 | ENE 11 | NNE 4 | W 13 | NNE 5 | NE 8 | W 13 | NE 8 | NE 7 | W 13 | W 13 | NE 7 |
| kJ | 49 | 29 | 29 | 35 | 31 | 31 | 30 | 16 | 51 | 11 | 45 | 7 | 12 | 3 | 18 | 13 | 9 | 8 | 14 | 30 | 14 |
Swell 3 Height (m) Direction Period (s) | N 8 | E 14 | N 11 | N 10 | NE 5 | N 9 | W 11 | N 7 | W 12 | N 6 | W 11 | W 13 | NNE 9 | W 12 | W 12 | SSW 14 | W 12 | W 12 | SSW 14 | SSW 13 | SSW 13 |
| kJ | 5 | 4 | 9 | 16 | 16 | 6 | 10 | 4 | 11 | 7 | 10 | 13 | 8 | 11 | 11 | 19 | 12 | 11 | 18 | 18 | 17 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 5 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 12 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 14 | 4 | 100 | 4 | 4 | 98 | 101 | 14 | 97 | 97 | 26 | 97 | 19 | 19 | 100 | 100 | 14 | 100 | 21 | 14 |
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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