Surf Forecasts:
Kua Bay surf forecast from 24 Jul 2026:
- Most powerful swell: Thursday 30 Jul, 2PM (local time) - 1ft (0.3m), 18s period, SW 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 0.3m 18s and forecast to arrive on Thursday (Jul 30) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 8s period and expected on Saturday (Jul 25) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Thu 30th Jul) | 1ft (0.3m) 18s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what’s coming our way for Kua Bay. I gotta be straight with you – we’ve got a long wait ahead. The first sixteen days are looking pretty grim, with a big fat zero for surf for the first week and a bit. We’re talking a solid stretch from the start of the period all the way through to the end of July with absolutely nothing to ride. It’s a real bummer, but it happens.
The first whisper of something happens on Wednesday, July 29th, but it’s barely a whisper. We’re talking a tiny 0.3ft swell from the SW, with the combined energy of all swells directed here at a weak (3). It’s clean in the morning with a light cross-offshore wind, but it’s so small it’s more of a paddle than a surf. Not worth getting excited about.
Things stay flat and poor through the end of the month and into the first week of August. We do get a bit of a spike on Saturday, August 1st, with a 3ft swell from the NNE, but the period is a short 6 seconds and the combined energy is still weak (97). The wind is clean and cross-offshore, but that short period means the waves will be crumbly and weak. It’s surfable, but only just.
It’s not until the second week of August that we finally see something with a bit of life. The real standout is Thursday, August 6th. The morning session sees a 2ft swell from the W with a very long period of 16 seconds pushing the combined energy to a moderate (183). The wind is clean and cross-offshore, which is a major plus. This is a proper groundswell, and that long period means it’ll have some punch, though at a beach break like Kua Bay, it might break a bit straight. Still, it’s the best we’ve seen.
Then, the absolute best of the whole outlook is Friday, August 7th. The afternoon is looking golden. We’ve got a 2ft swell from the W, still with a very long 15-second period, and the combined energy is a solid (218). The wind goes glassy. That’s the magic word. This is the one to circle on the calendar. Clean, glassy conditions with a decent, long-period groundswell. It’s a small window, but it’s the real deal.
So, to sum it up: a long, painful flat spell, then a tease at the end of July, before a couple of days in early August that finally offer something. The pick of the bunch is definitely the afternoon of Friday, August 7th.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sat morning, min 25°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Tue afternoon, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
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) | SSW 20 | SSW 20 | SSW 18 | SSW 18 | NE 7 | NE 7 | NNE 8 | NNE 8 | SW 14 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 7 | NNE 10 | NNE 9 | NNE 8 | ENE 11 | SW 9 | SW 5 | SW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 15 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross-on | glassy | glassy | on | glassy | glassy | cross-on | on | glassy | on | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 12:37PM0.67m | 11:22PM0.29m | 1:25PM0.71m | 00:50AM0.29m | 2:06PM0.75m | 1:45AM0.30m | 2:43PM0.78m | 2:27AM0.32m | 3:16PM0.81m | 3:05AM0.34m | 3:48PM0.82m | 3:41AM0.37m | 4:17PM0.82m | 4:18AM0.40m | |||||||
Low Tide | 8:43PM0.28m | 5:20AM0.14m | 9:10PM0.23m | 6:17AM0.12m | 9:35PM0.20m | 7:07AM0.10m | 9:59PM0.18m | 7:51AM0.07m | 10:24PM0.16m | 8:31AM0.06m | 10:48PM0.14m | 9:09AM0.06m | 11:12PM0.13m | ||||||||
 |  |  | | | | | |  | | | | | | | | | | |  | | |
 | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — |
Temp °C | 27 | 27 | 26 | 27 | 27 | 26 | 28 | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 28 | 29 | 27 | 27 | 27 | 27 |
Feels °C | 29 | 29 | 30 | 29 | 29 | 28 | 29 | 30 | 29 | 29 | 29 | 30 | 28 | 29 | 30 | 28 | 29 | 28 | 28 | 29 | 31 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 6 | NE 6 | NE 7 | NE 7 | NE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NE 10 | NNE 10 | NNE 9 | E 12 | NNE 9 | NE 9 | NE 8 | NE 7 |
| kJ | 47 | 58 | 34 | 47 | 91 | 79 | 103 | 162 | 98 | 103 | 120 | 123 | 91 | 27 | 132 | 141 | 75 | 108 | 194 | 84 | 91 |
Swell 2 Height (m) Direction Period (s) | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SW 17 | SSW 20 | SSW 16 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | ENE 13 | ENE 12 | SSW 14 | ENE 11 | SSW 14 | SSW 13 | SSW 13 |
| kJ | 78 | 75 | 66 | 61 | 76 | 76 | 51 | 102 | 102 | 86 | 84 | 48 | 42 | 41 | 32 | 30 | 39 | 154 | 36 | 33 | 31 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 17 | SSW 13 | SSW 21 | SSW 16 | SSW 20 | S 11 | SW 14 | E 14 | E 14 | E 14 | E 13 | E 13 | SSW 14 | SSW 14 | — | SSW 14 | SW 9 | SW 5 | SW 19 |
| kJ | 25 | 25 | 30 | 17 | 45 | 25 | 37 | 2 | 8 | 16 | 16 | 15 | 14 | 30 | 41 | 37 | — | 37 | 3 | 3 | 15 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 7 | — | — | NNE 8 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 96 | — | — | 134 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 100 | 291 | 14 | 100 | 4 | 14 | 100 | 4 | 4 | 100 | 100 | 4 | 98 | 100 | 20 | 98 | 18 | 26 | 51 | 100 | 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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