Surf Forecasts:
Kua Bay surf forecast from 28 Jul 2026:
- Most powerful swell: Friday 31 Jul, 11PM (local time) - 3.5ft (1.1m), 5s period, NE swell with 53 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 1.1m 5s and forecast to arrive on Friday (Jul 31) 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 12s period and expected on Tuesday (Jul 28) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Fri 31st Jul) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Alright groms, Rusty here, giving you the straight talk on the waves.
The first week and a half is a total bust. From Tuesday, the 28th of July, we're looking at a whole lot of nothing. The swell energy is flat, barely ticking over in the single digits. It's a proper drought, and you're not missing a thing.
Things start to breathe a little at the end of the first week of August. We get a tiny pulse on Friday, the 7th of August. The afternoon brings a 2ft west swell with a long 15-second period. The combined energy hits 107, and it's glassy. It's a groundswell, so it'll have some shape, but it's still pretty small.
The real standout is the morning of Saturday, the 8th of August. We're looking at a 2ft west swell, still with a solid 13-second period. The combined energy is up to 134 (moderate), and the wind is glassy. For a spot that's been dead flat, this is a gem. The west swell is right in the Kua Bay sweet spot. The water temp is about average for the season, so no shock there.
So, short story: a long, flat spell, then a tiny window of clean, small waves. The best shot is the glassy morning on the 8th of August. It's not going to be huge, but it'll be the best we've got for a while.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Tue morning, min 26°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Fri morning, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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) | NNE 8 | ENE 13 | ENE 12 | NE 10 | NNE 8 | NNE 8 | SW 19 | NE 7 | SW 18 | SW 16 | SW 16 | N 9 | NE 5 | N 8 | SW 14 | SW 14 | N 10 | N 9 | N 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 0 | 49 | 41 | 40 | 13 | 38 | 5 | 29 | 29 | 7 | 6 | 12 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | glassy | cross-off | cross | on | cross-off | on | cross-off | glassy | cross | glassy | cross | cross | cross-off | cross | cross-on | glassy | cross |
High Tide | 3:05AM0.34m | 3:48PM0.82m | 3:41AM0.37m | 4:17PM0.82m | 4:18AM0.40m | 4:45PM0.81m | 4:57AM0.44m | 5:12PM0.77m | 5:39AM0.48m | 5:39PM0.72m | 6:24AM0.51m | 6:05PM0.65m | |||||||
Low Tide | 10:24PM0.16m | 8:31AM0.06m | 10:48PM0.14m | 9:09AM0.06m | 11:12PM0.13m | 9:46AM0.07m | 11:35PM0.12m | 10:24AM0.11m | 11:59PM0.11m | 11:05AM0.16m | 00:23AM0.10m | 11:52AM0.22m | 00:48AM0.09m | ||||||
 |  |  | | | | | | | | | | | | | | | | | |
 | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — |
 | 7:01 | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 29 | 27 | 27 | 27 | 27 | 26 | 27 | 28 | 27 | 28 | 27 | 27 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 30 | 31 | 31 | 31 | 31 | 31 | 29 | 29 | 31 | 30 | 30 | 30 | 31 | 30 | 30 | 29 | 30 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | E 13 | ENE 13 | ENE 12 | NNE 9 | NNE 8 | NNE 8 | NE 7 | NE 7 | SW 18 | NE 6 | NE 6 | NE 6 | SW 15 | ENE 8 | NE 7 | NE 7 | NE 8 | NNE 7 | NNE 6 |
| kJ | 90 | 242 | 304 | 119 | 119 | 63 | 79 | 41 | 49 | 47 | 54 | 64 | 55 | 24 | 136 | 104 | 125 | 96 | 33 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 14 | NNE 7 | NE 10 | ENE 9 | ENE 8 | SSW 13 | SSW 18 | SSW 12 | SW 16 | SW 16 | SW 15 | ENE 8 | SW 14 | SW 14 | SW 14 | SSW 13 | NE 5 | NE 8 |
| kJ | 41 | 37 | 70 | 151 | 32 | 14 | 31 | 31 | 14 | 41 | 40 | 60 | 13 | 48 | 29 | 29 | 18 | 7 | 33 |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SW 19 | SSW 12 | N 10 | SSW 12 | N 9 | N 9 | N 8 | N 8 | E 14 | E 15 | N 10 | N 9 | N 8 |
| kJ | — | — | 39 | 37 | 36 | 34 | 15 | 14 | 8 | 15 | 14 | 13 | 5 | 5 | 16 | 17 | 7 | 6 | 12 |
Wind waves Height (m) Direction Period (s) | NNE 8 | NNE 7 | — | — | — | — | — | — | NE 7 | — | — | — | NE 5 | NNE 6 | — | — | — | — | — |
| kJ | 116 | 104 | — | — | — | — | — | — | 65 | — | — | — | 38 | 49 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 98 | 4 | 4 | 97 | 100 | 4 | 97 | 24 | 20 | 100 | 4 | 4 | 101 | 4 | 4 | 100 | 4 | 20 |
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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