
Surf Forecasts:
Kua Bay surf forecast from 20 Jul 2026:
- Most powerful swell: Friday 24 Jul, 5AM (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 Friday (Jul 24) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Friday (Jul 24) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Fri 24th Jul) | 3ft (0.9m) 6s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Right on, folks, Rusty here. Let's take a look at what's on offer for the Kua Bay area over the next couple of weeks.
Alright, straight up, we’ve got a flat spell coming in. The first suggestion of any surf shows up on the 19th, but it's tiny—just 1ft of swell from the WNW. The water temp is sitting at 80°, which is pretty much normal for this time of year. The combined energy is a measly 29, so we're talking weak sauce. Winds are cross and bumpy, and the wave comment says it all: "poor surf conditions." Not worth paddling out for.
That little blip fades fast, and from the 20th of July right through to the end of the month, we're looking at a long stretch of nothing. Day after day of zeros. It's a solid gap of about a week and a half with no surf on offer. The conditions are often glassy or clean, but with no waves to ride, that doesn't mean a thing.
Finally, on the 30th of July, we see a faint pulse. A 1ft SSW groundswell with a very long period of 18 seconds shows up in the afternoon. The combined energy is only 49, so it's still weak. The 18-second period is a proper groundswell, but at that size, it's barely going to stand up, even with the wind going light and variable. It's a tease, not a session.
Then, into the first week of August, we get a couple of small, short-period swells. On the 2nd of August, there's 1ft from the SW at a short 9 seconds, energy around 31. Again, light winds, but the period is too short and the size too small for any real quality. The 3rd of August offers a 1ft W swell with a better 13-second period, but the energy is still low (32), and the winds are cross.
Honestly, there's no standout session here. The whole 16-day window is a bust for surfing. The best we get is tiny, weak swells that won't peel. It's a dry spell, plain and simple. For a spot like Kua Bay, a blank run like this is pretty normal during the summer lull. Keep the board in the car, but don't hold your breath.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 27°C on Mon morning, min 25°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 27°C on Thu morning, min 24°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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) | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | W 11 | NE 7 | SSW 26 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | NE 6 | NE 7 | NE 8 | NNE 8 | NNE 8 | NNE 8 |
Wave Graph | ||||||||||||||||||||
29 | 29 | 27 | 13 | 13 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | glassy | cross-on | cross | glassy | cross-on | cross-off | glassy | cross-on | cross-off | cross-off | glassy | glassy | glassy | on | cross | cross |
High Tide | 7:20PM0.57m | 9:19AM0.56m | 7:48PM0.48m | 10:31AM0.59m | 8:18PM0.40m | 11:39AM0.63m | 9:15PM0.33m | 12:37PM0.67m | 11:22PM0.29m | 1:25PM0.71m | 00:50AM0.29m | 2:06PM0.75m | 1:45AM0.30m | |||||||
Low Tide | 2:14AM0.11m | 2:59PM0.36m | 2:49AM0.12m | 5:16PM0.38m | 3:30AM0.14m | 7:54PM0.33m | 4:20AM0.14m | 8:43PM0.28m | 5:20AM0.14m | 9:10PM0.23m | 6:17AM0.12m | 9:35PM0.20m | ||||||||
— | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | |
7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — | |
mm | — | — | — | — | — | — | — | 2 | — | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 27 | 27 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 27 | 27 | 27 | 26 |
Feels °C | 28 | 29 | 28 | 29 | 29 | 29 | 29 | 31 | 30 | 28 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 28 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | NNE 5 | NNE 8 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NE 7 | NNE 5 | NE 6 | NNE 5 | NE 6 | NE 6 | SSW 18 | NE 6 | SSW 17 | NE 8 | SSW 16 | NNE 8 | NNE 8 |
15 | 55 | 48 | 35 | 42 | 36 | 52 | 49 | 16 | 42 | 19 | 51 | 54 | 66 | 61 | 59 | 82 | 51 | 123 | 109 | |
Swell 2 Height (m) Direction Period (s) | NNE 7 | WNW 12 | WNW 12 | NE 5 | WNW 12 | SSW 12 | SSW 12 | SSW 12 | NE 7 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 17 | SSW 18 | SSW 21 | SSW 20 | SSW 20 | SSW 18 | SSW 18 |
29 | 29 | 27 | 10 | 13 | 13 | 14 | 13 | 8 | 106 | 91 | 78 | 75 | 30 | 61 | 45 | 38 | 37 | 102 | 60 | |
Swell 3 Height (m) Direction Period (s) | WNW 12 | ENE 7 | ENE 7 | WNW 12 | SSW 13 | W 11 | SSW 16 | SSW 26 | SSW 24 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | ENE 11 | S 13 | S 12 | SSW 16 | S 12 | S 11 | E 16 |
29 | 5 | 5 | 13 | 17 | 9 | 26 | 65 | 55 | 30 | 28 | 25 | 25 | 11 | 13 | 11 | 25 | 3 | 2 | 20 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 7 | — | NE 7 | — | NNE 8 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | 46 | — | 103 | — | 103 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 112 | 14 | 98 | 100 | 14 | 100 | 19 | 14 | 100 | 39 | 14 | 100 | 26 | 14 | 100 | 4 | 4 | 14 | 100 | 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)
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.










