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-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 11s period and expected on Wednesday (Jul 29) at 2AM.
| 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, let’s break down the next couple of weeks for Kua Bay.
It’s going to be a real slow starter. For the first 12 or 13 days, there’s pretty much nothing on offer. The water temp is 80°, which is 0.9° warmer than usual for this time of year, so just a touch on the warm side, nothing crazy.
From now through the 5th of August, you’re dealing with flat, clean conditions. Light winds and some glassy afternoons, but zero swell to work with. On the 29th of July, there’s a tiny 1ft pulse from the SW, but it’s weak, with a combined energy of just (2). Not worth paddling out for.
Things finally start to move on the 6th of August. Thursday morning and afternoon show a 2ft west swell with a long 14-second period, pushing the combined energy to a moderate (107). The wind stays glassy, so it’ll be clean. The swell direction is west, and Kua Bay prefers it from the WNW, so it’s a little off, but after all that flatness, it’s the first real chance for a surf. It’s a fairly consistent break for intermediates.
Friday the 7th gets a little messy. The swell is 1ft from the WNW with energy at (133), but the wind swings onshore from the NNE at 9 mph, making it choppy. Not ideal.
The best of the run lands on Saturday the 8th of August. The morning looks cleanest: a 2ft west swell, still holding that nice 14-second period, and the combined energy is a strong (153). Winds will be glassy from the south at 3 mph. It won’t be huge, but it’ll be clean and fun on a longboard. The crowds are only sometimes an issue, so you could grab some waves solo if you’re out early. This is the standout session for the whole forecast.
So, no rush. The first real window is the 6th, but the 8th of August is your best bet for a smooth, glassy morning with some decent little waves.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Fri morning, min 25°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 29°C on Tue afternoon, min 26°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | |||||||||||||||
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) | NE 7 | NE 7 | NNE 8 | NNE 8 | NNE 8 | SW 14 | NNE 8 | NE 8 | NNE 8 | NNE 8 | NNE 7 | NNE 10 | NNE 8 | ENE 12 | NE 11 | SW 3 | SW 3 | SW 4 | NE 7 | SW 18 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 1 | 0 | 49 | 42 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | glassy | on | glassy | glassy | on | cross-off | glassy | on | cross-on | glassy | cross-on | cross-on | cross-off | cross | on | glassy | cross | cross-on | glassy |
High Tide | 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 | 4:45PM0.81m | 4:57AM0.44m | |||||||
Low Tide | 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 | 9:46AM0.07m | 11:35PM0.12m | ||||||||
 | |  | |  | | | | | | | | | | | |  | | | | | |
 | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — |
Temp °C | 27 | 27 | 27 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 28 | 27 | 28 | 29 | 27 | 27 | 28 | 26 | 27 | 27 | 27 |
Feels °C | 29 | 29 | 29 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 30 | 31 | 28 | 29 | 31 | 30 | 30 | 28 | 30 | 29 | 31 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NE 8 | NNE 8 | NNE 8 | NNE 5 | NNE 10 | ENE 13 | ENE 12 | NE 11 | NNE 9 | N 8 | NE 8 | NE 7 | NE 7 | NE 7 |
| kJ | 69 | 103 | 72 | 106 | 126 | 126 | 113 | 129 | 91 | 93 | 21 | 132 | 137 | 297 | 453 | 213 | 82 | 73 | 64 | 86 | 52 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SW 17 | SSW 20 | SSW 16 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | NNE 7 | ENE 13 | SSW 14 | SSW 14 | SSW 14 | NE 12 | NE 9 | SSW 13 | SSW 18 | SW 18 | SW 16 |
| kJ | 61 | 76 | 76 | 51 | 102 | 60 | 86 | 84 | 48 | 42 | 36 | 57 | 37 | 39 | 37 | 71 | 39 | 32 | 31 | 49 | 42 |
Swell 3 Height (m) Direction Period (s) | S 13 | SSW 21 | SSW 16 | SSW 20 | S 11 | SW 14 | E 14 | E 15 | E 14 | E 13 | NNE 10 | SSW 14 | — | — | — | SSW 14 | SSW 13 | SW 4 | SSW 12 | SSW 12 | N 10 |
| kJ | 13 | 45 | 25 | 37 | 2 | 8 | 16 | 17 | 16 | 31 | 36 | 41 | — | — | — | 36 | 33 | 1 | 14 | 14 | 7 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | NNE 8 | NNE 9 | — | SW 3 | SW 3 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 113 | 181 | — | 2 | 2 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 101 | 4 | 14 | 100 | 4 | 4 | 100 | 39 | 4 | 18 | 18 | 4 | 20 | 18 | 26 | 51 | 100 | 14 | 97 | 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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