Surf Forecasts:
Kua Bay surf forecast from 18 Jul 2026:
- Best quality surf: Saturday 18 Jul, 8PM (local time) - 1.5ft (0.5m), 13s period, W swell with glassy winds.
- Most powerful swell: Saturday 18 Jul, 2PM (local time) - 1.5ft (0.5m), 13s period, W swell with 89 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 8PM (local time) - 1.5ft (0.5m), 13s 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 Saturday (Jul 18) at 8PM. The primary swell is predicted to be 0.5m and 13s 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 0.5m 13s and forecast to arrive on Saturday (Jul 18) 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 1.0m 7s period and expected on Saturday (Jul 18) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 18th Jul) | 1.5ft (0.5m) 13s |
| Best Surf | 8PM (Sat 18th Jul) | 1.5ft (0.5m) 13s |
| Most Powerful | 2PM (Sat 18th Jul) | 1.5ft (0.5m) 13s |
Table - best surf conditions forecast for Kua Bay over the next 16 days.
The Lowdown
Hey folks, Rusty here. Gotta be straight with you – the next 16 days are looking pretty flat for Kua Bay. There’s basically nothing to get excited about, and I mean nothing, for a long stretch. We’ve got a bit of a tease right at the start, but it’s not worth paddling out for.
The only hint of action comes this Saturday, the 18th of July. We’re looking at a tiny 2ft swell rolling in from the west, with a period of 13 seconds. That’s a long-period groundswell, which is a nice thought, but the combined energy is a measly 89 – weak. The wind is offshore from the NW at 3 mph in the morning, which would make for clean conditions, but the swell is just too small to do anything with. The water temp is sitting at 80°, which is pretty normal for this time of year.
After Saturday, the surf just fades into nothing. We’re talking days and days of zeros. From Sunday the 19th right through to Friday the 31st of July, there’s barely a ripple. You’ll see a few tiny waves pop up here and there, like on the 22nd we get a 2ft from the NE with a 5-second period – that’s just wind chop, not worth a second look. The combined energy drops to single digits most days.
Then, on Saturday the 1st of August, there’s a glimmer. The afternoon looks glassy, with a 2ft west swell and a 14-second period. The combined energy is still only 99, so it’s weak, but it’s surfable if you’re desperate. The real kicker might be Sunday the 2nd of August. The morning shows a 2ft west swell, a 16-second period, and combined energy of 231 – that’s moderate. The wind is cross-on, so it’s not perfect, but the afternoon cleans up with a cross-off breeze and a combined energy of 322. That’s the best on offer, but it’s a week and a half away, so don’t get your hopes up. The swell direction is west, which is what Kua Bay likes to see.
Honestly, for a spot that’s exposed to the west, this is a real dry spell. Kua Bay can be consistent, but it’s not happening now. The setup is so small and weak that it might be more interesting for a kite surfer than a paddle surfer on those occasional breezy days. Keep an eye on the forecast for the 2nd of August, but for now, stash the board.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sat morning, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | W 13 | W 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | W 11 | NE 6 | SSW 26 | NE 5 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | NE 7 | NE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 89 | 87 | 57 | 50 | 29 | 29 | 27 | 13 | 13 | 9 | 0 | 0 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | cross-off | cross-on | cross | glassy | cross | cross | glassy | cross | cross-on | glassy | cross-on | cross-off | cross | cross | glassy | glassy | glassy | glassy | glassy |
High Tide | 6:50PM0.67m | 8:11AM0.52m | 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 | ||||||||
Low Tide | 12:27PM0.22m | 1:43AM0.10m | 1:31PM0.30m | 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 | ||||||||
 | |  | | | | | | |  |  |  | | | | | |  | | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:04 | — |
mm | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | — | 1 | — | — | — | — | — | — |
Temp °C | 28 | 27 | 26 | 26 | 26 | 25 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 31 | 30 | 30 | 30 | 27 | 28 | 29 | 28 | 28 | 29 | 28 | 30 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 28 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NNE 6 | NNE 7 | NNE 7 | NNE 6 | NNE 8 | NNE 8 | NNE 7 | NE 7 | NE 7 | NE 6 | NE 7 | NE 7 | NE 6 | NE 5 | NE 6 | NE 6 | SSW 18 | NE 7 | NE 7 | NE 8 |
| kJ | 64 | 74 | 50 | 35 | 44 | 32 | 50 | 66 | 49 | 37 | 51 | 38 | 12 | 31 | 22 | 40 | 64 | 66 | 50 | 88 | 82 |
Swell 2 Height (m) Direction Period (s) | W 13 | W 13 | WNW 13 | WNW 12 | WNW 12 | NE 5 | WNW 12 | WNW 12 | WNW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 17 | SSW 18 | SSW 18 | SSW 20 |
| kJ | 89 | 87 | 57 | 50 | 29 | 11 | 27 | 13 | 13 | 14 | 14 | 13 | 55 | 106 | 91 | 78 | 75 | 30 | 61 | 61 | 76 |
Swell 3 Height (m) Direction Period (s) | NNE 8 | ENE 8 | ENE 8 | SW 11 | SW 11 | WNW 12 | ENE 7 | SSW 10 | SSW 16 | W 11 | SSW 16 | SSW 26 | SSW 16 | NNE 7 | SSW 17 | SSW 16 | SSW 16 | S 13 | SSW 13 | SSW 15 | SSW 16 |
| kJ | 21 | 11 | 11 | 5 | 4 | 29 | 5 | 11 | 26 | 9 | 26 | 65 | 25 | 5 | 58 | 25 | 25 | 14 | 18 | 23 | 25 |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 4 | — | — | — | — | — | — | — | — | NE 5 | — | — | — | — | NE 6 | — | — | — |
| kJ | — | — | — | 13 | — | — | — | — | — | — | — | — | 13 | — | — | — | — | 45 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 10 | 4 | 100 | 100 | 14 | 98 | 100 | 14 | 103 | 100 | 14 | 30 | 112 | 14 | 100 | 101 | 22 | 100 | 101 | 14 |
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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