Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Issued: 1 pm 06 Jul 2026 (local time)

Forecast update in  hr  min

Today's Kua Bay sea temperature is
27.3° C

1.5°C warmer than normal for this time of year

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 7 Jul 2026:

  • Best quality surf: Saturday 11 Jul, 8AM (local time) - 1ft (0.3m), 19s period, SW swell with glassy winds.
  • Most powerful swell: Sunday 12 Jul, 5PM (local time) - 1.5ft (0.4m), 16s period, SW swell with 89 kJ wave energy.
  • Next surfable swell (1★+): Saturday 11 Jul, 8AM (local time) - 1ft (0.3m), 19s period with SW 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 11) at 8AM. The primary swell is predicted to be 0.3m and 19s period with a secondary swell of 0.4m and 13s. 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 0.4m 16s and forecast to arrive on Sunday (Jul 12) at 5PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 7s period and expected on Monday (Jul 06) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sat 11th Jul)1ft (0.3m) 19s
Best Surf 8AM (Sat 11th Jul)1ft (0.3m) 19s
Most Powerful 5PM (Sun 12th Jul)1.5ft (0.4m) 16s

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


Updates in  hr  min  s Forecast update imminent

Alright folks, Rusty here. Let's take a good, hard look at what we've got for Kua Bay over the next couple of weeks. I gotta be straight with you – it's a bit of a slow dance, but there might just be a couple of moments where it all comes together.

Right now and for the next several days, the surf is barely a whisper. We're looking at tiny, weak energy (2) with flat spells. The water temp is sitting at 81°, feeling a touch warmer than normal for this time of year, which is nice for a paddle but not much else. There are long gaps where it's just not worth getting your board wet.

Things start to get a little interesting around the morning of Saturday, July 11th. We see the energy finally bump up into three-digit territory, hitting a moderate 112. The swell is from the west at 1 ft, but it's a long period of 14 seconds. The wind, however, is onshore from the WNW, so the quality won't be there. It’s a tease.

The first real standout, and honestly the best bet in the whole outlook, is Wednesday, July 15th afternoon. The stars align briefly. The combined swell energy is strong at 239, with 2 ft of west swell. The period is a solid 16 seconds – a proper groundswell. And the kicker? The wind goes glassy from the SSE. That's as clean as it gets. This is the one to circle on your calendar if you can. The only downer here is that you might have some company; crowds are sometimes an issue here.

Thursday, July 16th afternoon holds up, too. The energy is even stronger at 253, still with 2 ft west swell and a 15-second period. The wind turns cross-offshore from the SSW, keeping things nice and clean. Another solid session, but the glassy conditions on the 15th are really the pick.

After that, the energy fades back into the low to moderate range, and the wind gets wonky. By Tuesday, July 20th into the 21st, we're back to small waves with mostly weak energy, though a few mornings might see some cross-offshore winds for a clean look at small, weak swell (1.0 ft). Honestly, unless you're desperate for a splash, the second week looks pretty average.

So, to sum it up: it’s a slow start, a strong middle, and a weak finish. Your best chance for something memorable is that glassy session on the afternoon of Wednesday, July 15th at Kua Bay. Don't sleep on it.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

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

Mon
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
W
10
0.1
W
10
1
NNE
8
1
NNE
8
0.1
SW
13
0.3
SSW
14
0.1
W
16
0.8
NNE
7
0.2
W
15
0.2
W
14
0.2
W
16
0.3
W
13
0.3
W
14
0.3
W
14
0.4
W
14
0.4
W
14
0.4
W
13
0.3
W
13
0.4
SW
16
0.4
SW
16
0.4
SW
15
Wave Graph
Metric surfscale
Energy kJ
2
2
0
0
7
0
5
0
17
16
20
31
37
32
61
64
55
30
89
86
78
Wind (km/h)
5
N
5
E
10
NNW
0
NW
5
ENE
10
NW
10
WSW
5
E
10
NNW
10
SW
5
N
10
W
5
WSW
5
NNW
5
WNW
5
N
5
NNW
15
SW
5
NW
10
NNW
5
W
Wind State
cross-on
glassy
cross-on
glassy
glassy
on
cross
glassy
on
cross-off
glassy
cross-on
cross
cross-on
on
cross-on
glassy
cross
glassy
cross-on
glassy
High Tide
7:52PM0.57m
10:13AM0.56m
8:37PM0.48m
11:22AM0.64m
9:39PM0.40m
12:22PM0.73m
11:07PM0.34m
1:17PM0.81m
00:33AM0.31m
2:08PM0.88m
1:44AM0.30m
2:56PM0.93m
2:43AM0.32m
Low Tide
2:03PM0.33m
3:00AM0.10m
3:53PM0.37m
3:41AM0.09m
6:03PM0.35m
4:30AM0.07m
7:43PM0.29m
5:25AM0.05m
8:45PM0.22m
6:22AM0.02m
9:33PM0.17m
7:18AM-0.00m
10:14PM0.13m
8:12AM-0.02m
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
rain showers
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:50
5:50
5:52
5:52
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:07
7:07
7:07
7:07
7:06
7:06
7:06
 mm
2
Temp °C
27
26
27
27
26
27
27
26
27
28
26
27
27
26
27
27
26
27
27
26
27
Feels °C
30
26
28
30
27
28
29
28
28
30
29
29
29
29
30
30
29
29
30
29
30
Swell 1
Height (m)
Direction
Period (s)
0.4
SSW
15
0.3
SSW
15
1
NNE
8
1
NNE
8
0.8
NNE
7
0.7
NNE
6
1.1
NE
7
0.8
NNE
7
0.9
NE
7
0.2
SSW
13
0.8
NNE
7
0.9
NNE
7
1.1
NE
7
0.9
NNE
7
0.4
W
14
1.1
NNE
7
0.9
NNE
7
1
NNE
8
1.1
NNE
8
0.9
NNE
8
1
NNE
7
Energy kJ
74
42
120
117
68
34
116
53
71
16
59
86
118
75
61
120
84
113
142
88
108
Swell 2
Height (m)
Direction
Period (s)
0.1
W
10
0.1
W
10
0.3
SSW
14
0.3
SSW
14
0.3
SSW
14
0.4
NE
7
0.3
SSW
14
0.5
NE
8
0.2
SSW
13
0.2
W
14
0.2
SSW
12
0.3
W
13
0.3
W
14
0.3
W
14
0.3
SW
18
0.4
W
14
0.4
SW
17
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
15
Energy kJ
2
2
41
40
41
19
37
28
16
16
15
31
37
32
51
64
77
66
89
86
78
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
13
0.3
SSW
14
0.1
W
16
0.3
SSW
13
0.2
W
15
0.1
W
18
0.2
W
16
0.2
SSW
12
0.2
SSW
13
0.2
SSW
19
0.1
S
12
0.4
SW
18
0.4
W
13
0.3
W
13
0.3
W
13
0.3
W
12
0.3
W
12
Energy kJ
7
38
5
35
17
6
20
14
16
37
3
79
55
30
28
26
26
Wind waves
Height (m)
Direction
Period (s)
1
NNE
8
1.2
NNE
7
1
NE
7
1
NNE
7
Energy kJ
117
142
91
102
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
2
1
Distance (km)
4
4
14
4
4
100
101
4
100
100
4
100
100
20
32
14
30
32
0
20
0
Best forecast wave conditions in Big Island
Rating
(10 max)
1
3
2
1
2
1
2
1
2
2
2
2
2
1
1
2
2
1
1
2
1
Best forecast wave conditions in United States
Rating
(10 max)
2
4
2
2
4
2
3
4
3
3
2
3
3
3
3
2
3
3
3
3
3
Header Global
Rating
(10 max)
7
5
7
9
8
9
7
7
6
7
5
5
5
5
5
5
9
9
7
5
6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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