Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Kua Bay Surf Forecast and Surf Report

Issued: 7 am 02 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kua Bay sea temperature is
27.3° C
1.0° 

Kua Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Kua Bay surf forecast from 2 Aug 2026:

  • Most powerful swell: Sunday 9 Aug, 2PM (local time) - 1ft (0.3m), 15s period, W swell with 38 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 15s and forecast to arrive on Sunday (Aug 09) 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 1.1m 6s period and expected on Saturday (Aug 08) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Sun 9th Aug)1ft (0.3m) 15s

Table - best surf conditions forecast for Kua Bay over the next 16 days.


The Lowdown

Alright, let’s talk turkey. The water’s 81°F, which is a tad warmer than normal for the season, but it’s nothing crazy.

The start of this run is a total wasteland. From now through the 5th, there’s absolutely nothing. We’re talkin’ 0.6ft mush with weak energy readings in the single digits to low teens. The wind is all over the place, light but cross-shore, so it’s bumpy. You’d be better off on a paddleboard. It’s a bummer, but it is what it is.

We stay in a flat spell for the whole first week. Even by the 9th and 10th we’re only seeing 1ft waves. There’s a little more energy starting to show (58-63), with a longer period swell of 14 seconds, but it’s still too small to do anything with. And long-period swell on a beach break like this can be a bit walled.

Then, around the 13th and 14th, things finally start to change. The energy jumps into the triple digits and by the 14th we’re hitting the 200s. The swell is still small, but it’s getting glassy and clean. It’s those small, clean, fun waves that are better than they look.

The big one is the 17th. Monday morning. The swell jumps to 3ft from the west with a 16-second period – that’s real groundswell. The energy reading is a powerful 503. Winds are light, cross-off, and clean. That’s your standout. It’s not a giant, but it’s the cleanest, most powerful swell in the entire forecast. The afternoon gets a cross-shore breeze, so it’s a morning mission.

The days leading up to it, the 15th and 16th, are still in that 2-3ft range with some lumpy cross-on wind in the mornings. The 16th afternoon cleans up, and the 17th morning is the cherry on top. It’s a long way out, so don’t book the time off yet, but mark it down as the one to watch.

Rusty

Short Range Forecast

Light rain (total 2mm), mostly falling on Mon night. Warm (max 28°C on Sun morning, min 25°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 28°C on Fri afternoon, min 25°C on Wed night). Wind will be generally light.

Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
N
10
0.3
N
9
0.3
N
9
0.2
W
11
0.2
W
12
0.2
W
12
0.2
W
11
0.2
W
11
0.2
W
13
0.3
W
13
0.2
W
12
0.2
W
12
0.2
W
12
0.2
W
12
0.2
SSW
14
0.2
W
12
0.2
W
12
0.8
NE
6
0.2
W
12
1.1
NE
6
1
NE
6
Wave Graph
Metric surfscale
Energy kJ
16
15
13
10
10
11
9
10
13
28
11
11
11
12
0
11
11
0
11
0
0
Wind (km/h)
5
WNW
10
SW
0
ENE
10
SW
10
WSW
5
W
10
WSW
5
W
5
SW
10
W
10
SW
10
NNW
10
WSW
10
SW
5
N
5
WNW
5
SW
5
W
5
NNW
0
WNW
0
W
Wind State
on
cross
glassy
cross
cross
cross-on
cross-on
cross-on
cross
cross-on
cross
cross-on
cross-on
cross
glassy
cross-on
cross
glassy
cross-on
glassy
glassy
High Tide
6:05PM0.65m
7:15AM0.55m
6:33PM0.57m
8:16AM0.59m
7:03PM0.49m
9:30AM0.63m
7:38PM0.40m
10:50AM0.68m
8:46PM0.32m
12:04PM0.74m
11:08PM0.28m
1:05PM0.81m
00:47AM0.29m
Low Tide
11:52AM0.22m
00:48AM0.09m
12:48PM0.28m
1:18AM0.09m
2:06PM0.34m
1:54AM0.09m
4:10PM0.36m
2:41AM0.10m
6:56PM0.32m
3:45AM0.09m
8:07PM0.25m
5:01AM0.08m
8:44PM0.19m
clear
clear
clear
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:00
6:00
6:00
6:01
6:01
6:01
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
6:59
6:59
6:58
6:58
6:57
6:57
 mm
2
Temp °C
28
28
26
27
26
25
27
27
27
27
27
26
27
27
26
27
28
27
27
29
27
Feels °C
30
30
29
29
28
28
30
30
30
29
29
28
30
29
30
30
31
31
30
32
31
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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