Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Issued: 7 pm 04 Jul 2026 (local time)

Forecast update in  hr  min

Today's Kua Bay sea temperature is
27.5° C

1.7°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 5 Jul 2026:

  • Best quality surf: Friday 10 Jul, 8PM (local time) - 1.5ft (0.4m), 14s period, W swell with glassy winds.
  • Most powerful swell: Friday 10 Jul, 11PM (local time) - 1.5ft (0.4m), 15s period, W swell with 67 kJ wave energy.
  • Next surfable swell (1★+): Friday 10 Jul, 8PM (local time) - 1.5ft (0.4m), 14s 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 Friday (Jul 10) at 8PM. The primary swell is predicted to be 0.4m and 14s 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 0.4m 15s and forecast to arrive on Friday (Jul 10) 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 7s period and expected on Tuesday (Jul 07) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Fri 10th Jul)1.5ft (0.4m) 14s
Best Surf 8PM (Fri 10th Jul)1.5ft (0.4m) 14s
Most Powerful11PM (Fri 10th Jul)1.5ft (0.4m) 15s

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


Updates in  hr  min  s Forecast update imminent

G’day, Rusty here. Let’s talk Kua Bay for the next couple of weeks. It’s a slow start – we’re looking at a long stretch of tiny or flat surf right at the beginning. The water temp is about normal for the season, no surprises there.

The first real chance to get wet comes on Monday 13 July. Morning is still small with light wind, but the afternoon brings a little bump – 0.6m west swell, 15-second period, and the wind turns cross-offshore, leaving the surface glassy. The combined energy is 157 (moderate), so there’s some life. It’s small, but it’s the first proper session in the lineup.

Tuesday 14 July picks up a little more. Swell hits 0.7m to 0.8m from the west, with a very long 19-second period on the morning. That’s proper groundswell – waves with shape and push, though at Kua Bay it might break a bit straight. Energy jumps to 350 (strong) that morning. The wind’s cross-shore, a little bumpy, but still rideable. Wednesday 15 July is the highlight: 0.8m west swell, 16-second period, and a clean cross-offshore wind in the afternoon. Combined energy at 326 (strong). Not a big wave, but the cleanest conditions of the whole run.

After Thursday 16 July, the swell drops away fast. By Friday the energy’s down to double digits, waves shrink to 0.3m to 0.6m, and it’s back to poor surf. There’s a clean cross-offshore breeze on Saturday 18 July afternoon, but only 0.4m – not worth rushing for.

So, the real window is Monday 13 July through Thursday 16 July. Wednesday afternoon is the standout. The rest is a waiting game. Keep it on your radar.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Tue night. Warm (max 28°C on Fri morning, min 25°C on Tue night). Wind will be generally light.

Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Sat
11
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
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
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
NNE
8
0.8
NNE
8
0.9
NNE
7
0.1
NW
11
0.1
W
10
0.1
W
10
0.1
W
10
0.9
NNE
8
1
NNE
8
0.1
SW
13
0.9
NNE
7
0.1
W
16
0.7
NNE
6
0.2
W
15
0.2
W
14
0.2
W
16
0.3
W
13
0.3
W
14
0.3
W
13
0.4
W
14
0.4
W
14
Wave Graph
Metric surfscale
Energy kJ
0
0
0
5
2
2
2
0
0
7
0
5
0
17
16
20
31
37
32
60
63
Wind (km/h)
10
NE
5
WNW
5
NNW
10
NNE
5
NW
5
N
10
NE
5
NNW
5
SW
5
N
10
WNW
5
SW
5
NNE
5
W
5
NW
5
NNE
10
WSW
10
WSW
0
SSW
5
NW
5
N
Wind State
cross
cross-on
cross-on
cross
on
glassy
cross
glassy
glassy
glassy
cross-on
glassy
glassy
cross-on
glassy
glassy
cross-on
cross
glassy
on
glassy
High Tide
7:53AM0.43m
7:17PM0.64m
9:01AM0.49m
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
Low Tide
1:54AM0.13m
12:46PM0.27m
2:25AM0.12m
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
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
rain showers
clear
part cloud
rain showers
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:50
5:50
5:50
5:50
5:50
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
7:07
7:07
7:06
 mm
1
3
2
Temp °C
26
27
27
26
27
27
26
27
27
26
26
26
26
27
27
27
28
27
26
27
27
Feels °C
29
28
29
27
29
30
29
29
29
29
28
28
29
29
29
31
30
28
29
30
31
Swell 1
Height (m)
Direction
Period (s)
0.8
NNE
8
0.8
NNE
8
0.9
NNE
7
0.4
SSW
16
1
NNE
7
1
NNE
7
0.3
SSW
15
0.9
NNE
8
1
NNE
8
0.9
NE
7
0.3
SSW
14
1
NE
7
0.7
NNE
6
0.8
NNE
7
0.2
SSW
13
0.8
NNE
7
0.9
NE
7
1
NE
7
0.9
NNE
7
0.9
NNE
7
1.1
NE
7
Energy kJ
78
76
93
102
108
114
42
101
117
79
38
91
37
66
16
59
69
99
93
79
106
Swell 2
Height (m)
Direction
Period (s)
0.3
SSW
18
0.3
SSW
18
0.3
SSW
17
0.1
NW
11
0.4
SSW
16
0.4
SSW
15
0.1
W
10
0.3
SSW
14
0.3
SSW
14
0.3
SSW
14
0.3
SSW
14
0.3
ENE
8
0.2
SSW
13
0.2
W
14
0.2
SSW
12
0.3
W
13
0.3
W
14
0.3
W
13
0.4
W
14
0.4
W
14
Energy kJ
65
61
58
5
82
74
2
41
40
40
37
11
16
16
15
31
37
32
60
63
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
15
0.2
SSW
14
0.2
SSW
14
0.1
S
13
0.1
W
10
0.1
W
10
0.1
SW
13
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
S
12
0.2
SSW
19
0.3
SW
18
0.4
SW
18
Energy kJ
21
20
20
3
2
2
7
5
34
17
6
20
14
11
37
51
79
Wind waves
Height (m)
Direction
Period (s)
0.9
NNE
7
1.1
NE
7
0.9
NNE
7
0.9
NNE
7
Energy kJ
90
126
93
83
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
Distance (km)
4
4
100
14
4
4
4
4
4
4
100
4
20
100
4
4
100
100
4
4
4
Best forecast wave conditions in Big Island
Rating
(10 max)
3
1
3
1
2
2
2
1
2
2
2
1
1
1
1
2
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
3
2
2
3
2
2
3
2
2
4
3
2
4
1
1
4
4
3
3
2
2
Header Global
Rating
(10 max)
9
7
5
6
8
7
5
5
9
8
9
9
5
6
6
5
8
7
4
9
9
  • 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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