Surf Forecasts:
Kua Bay surf forecast from 5 Jul 2026:
- Best quality surf: Friday 10 Jul, 8PM (local time) - 1.5ft (0.4m), 14s period, W swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 11PM (local time) - 1.5ft (0.4m), 15s period, W swell with 67 kJ wave energy.
- Next surfable swell (1★+): Friday 10 Jul, 8PM (local time) - 1.5ft (0.4m), 14s period with W 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 (Jul 10) at 8PM. The primary swell is predicted to be 0.4m and 14s 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 0.4m 15s and forecast to arrive on Friday (Jul 10) at 11PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Tuesday (Jul 07) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Fri 10th Jul) | 1.5ft (0.4m) 14s |
| Best Surf | 8PM (Fri 10th Jul) | 1.5ft (0.4m) 14s |
| Most Powerful | 11PM (Fri 10th Jul) | 1.5ft (0.4m) 15s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
Updates in hr min s Forecast update imminent
G’day, Rusty here. Let’s talk Kua Bay for the next couple of weeks. It’s a slow start – we’re looking at a long stretch of tiny or flat surf right at the beginning. The water temp is about normal for the season, no surprises there.
The first real chance to get wet comes on Monday 13 July. Morning is still small with light wind, but the afternoon brings a little bump – 0.6m west swell, 15-second period, and the wind turns cross-offshore, leaving the surface glassy. The combined energy is 157 (moderate), so there’s some life. It’s small, but it’s the first proper session in the lineup.
Tuesday 14 July picks up a little more. Swell hits 0.7m to 0.8m from the west, with a very long 19-second period on the morning. That’s proper groundswell – waves with shape and push, though at Kua Bay it might break a bit straight. Energy jumps to 350 (strong) that morning. The wind’s cross-shore, a little bumpy, but still rideable. Wednesday 15 July is the highlight: 0.8m west swell, 16-second period, and a clean cross-offshore wind in the afternoon. Combined energy at 326 (strong). Not a big wave, but the cleanest conditions of the whole run.
After Thursday 16 July, the swell drops away fast. By Friday the energy’s down to double digits, waves shrink to 0.3m to 0.6m, and it’s back to poor surf. There’s a clean cross-offshore breeze on Saturday 18 July afternoon, but only 0.4m – not worth rushing for.
So, the real window is Monday 13 July through Thursday 16 July. Wednesday afternoon is the standout. The rest is a waiting game. Keep it on your radar.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sun morning, min 25°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Warm (max 28°C on Fri morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Sat 11 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | NNE 8 | NNE 8 | NNE 7 | NW 11 | W 10 | W 10 | W 10 | NNE 8 | NNE 8 | SW 13 | NNE 7 | W 16 | NNE 6 | W 15 | W 14 | W 16 | W 13 | W 14 | W 13 | W 14 | W 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 5 | 2 | 2 | 2 | 0 | 0 | 7 | 0 | 5 | 0 | 17 | 16 | 20 | 31 | 37 | 32 | 60 | 63 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | on | glassy | cross | glassy | glassy | glassy | cross-on | glassy | glassy | cross-on | glassy | glassy | cross-on | cross | glassy | on | glassy |
High Tide | 7:53AM0.43m | 7:17PM0.64m | 9:01AM0.49m | 7:52PM0.57m | 10:13AM0.56m | 8:37PM0.48m | 11:22AM0.64m | 9:39PM0.40m | 12:22PM0.73m | 11:07PM0.34m | 1:17PM0.81m | 00:33AM0.31m | 2:08PM0.88m | ||||||||
Low Tide | 1:54AM0.13m | 12:46PM0.27m | 2:25AM0.12m | 2:03PM0.33m | 3:00AM0.10m | 3:53PM0.37m | 3:41AM0.09m | 6:03PM0.35m | 4:30AM0.07m | 7:43PM0.29m | 5:25AM0.05m | 8:45PM0.22m | 6:22AM0.02m | ||||||||
 |  |  | | | |  | | |  | | | | | | | | | | |  | |
 | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — |
 | 7:07 | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | 3 | — | — | — | — | — | — | — | 2 |
Temp °C | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 28 | 27 | 26 | 27 | 27 |
Feels °C | 29 | 28 | 29 | 27 | 29 | 30 | 29 | 29 | 29 | 29 | 28 | 28 | 29 | 29 | 29 | 31 | 30 | 28 | 29 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | NNE 8 | NNE 8 | NNE 7 | SSW 16 | NNE 7 | NNE 7 | SSW 15 | NNE 8 | NNE 8 | NE 7 | SSW 14 | NE 7 | NNE 6 | NNE 7 | SSW 13 | NNE 7 | NE 7 | NE 7 | NNE 7 | NNE 7 | NE 7 |
| kJ | 78 | 76 | 93 | 102 | 108 | 114 | 42 | 101 | 117 | 79 | 38 | 91 | 37 | 66 | 16 | 59 | 69 | 99 | 93 | 79 | 106 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SSW 18 | SSW 17 | NW 11 | SSW 16 | SSW 15 | W 10 | SSW 14 | SSW 14 | SSW 14 | — | SSW 14 | ENE 8 | SSW 13 | W 14 | SSW 12 | W 13 | W 14 | W 13 | W 14 | W 14 |
| kJ | 65 | 61 | 58 | 5 | 82 | 74 | 2 | 41 | 40 | 40 | — | 37 | 11 | 16 | 16 | 15 | 31 | 37 | 32 | 60 | 63 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 14 | S 13 | W 10 | W 10 | — | — | — | SW 13 | — | W 16 | SSW 13 | W 15 | W 18 | W 16 | SSW 12 | S 12 | SSW 19 | SW 18 | SW 18 |
| kJ | 21 | 20 | 20 | 3 | 2 | 2 | — | — | — | 7 | — | 5 | 34 | 17 | 6 | 20 | 14 | 11 | 37 | 51 | 79 |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 7 | — | — | NE 7 | — | — | — | NNE 7 | — | — | — | NNE 7 | — | — | — | — | — | — |
| kJ | — | — | — | 90 | — | — | 126 | — | — | — | 93 | — | — | — | 83 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 4 | 100 | 14 | 4 | 4 | 4 | 4 | 4 | 4 | 100 | 4 | 20 | 100 | 4 | 4 | 100 | 100 | 4 | 4 | 4 |
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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