Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Issued: 7 am 03 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 3 Jul 2026:

  • Most powerful swell: Friday 10 Jul, 11AM (local time) - 1.5ft (0.4m), 14s period, W swell with 65 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 0.4m 14s and forecast to arrive on Friday (Jul 10) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Tuesday (Jul 07) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Fri 10th Jul)1.5ft (0.4m) 14s

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. Gotta be straight with you—this outlook for Kua Bay is a bit of a slow burn. We’ve got a long dry spell ahead before any proper waves show up, so don’t rush to wax your board just yet.

The first week is pretty much a write-off. From Friday 3 July right through to the end of Sunday 12 July, the surf is flat to tiny, with swell heights barely scraping 1 ft and combined energy values down in the weak range (0 to 76). The water temperature is sitting at 81°, which is a touch warmer than normal for this time of year—nice for a dip but not for riding. Winds are mostly light and variable, with a few glassy moments on Saturday 4 July afternoon and Monday 6 July afternoon, but there’s just no push in the water. That Friday 10 July afternoon offers the only glimmer: a 1 ft West swell (14 sec period) with glassy conditions and combined energy of 76—surfable but very ordinary. It’s not worth a dedicated trip.

Then, after more tiny days, we finally see a shift around Monday 13 July. The swell picks up to 2 ft from the West (15 sec period) and combined energy jumps to 121—moderate energy now. Winds are light cross-onshore in the morning, but the afternoon turns clean with a cross-off breeze. Still, the conditions are poor and the score is low.

The real standout finally arrives on Thursday 16 July. The afternoon session at Kua Bay (Hawaii) is the best on offer across the whole 16-day window. Swell comes from the West at 3 ft, with a period of 15 seconds—that’s a proper groundswell with good shape and energy. Combined energy is 275, moderate but solid. Winds are cross-off from the SSW at 9 mph, keeping the surface clean. The guidance says Kua Bay is fairly consistent, exposed to the WNW swell direction, and works best with WNW swell—so this West swell is a good match. Crowds here are sometimes an issue, so expect a few others out. This is recommended for intermediate surfers; the size is well within comfort range, but that long period means the sets will have some punch and longer lulls, so paddle outs should be easier.

Wednesday 15 July afternoon is almost as good, with a 3 ft WNW swell (16 sec period, combined energy 416) and clean cross-off wind, but the score is a touch lower, so Thursday 16 July afternoon gets the nod.

After that, surf fades quickly. Friday 17 July drops back to 2 ft and 2 ft, and by Saturday 18 July we’re back to 2 ft with weak energy. The run from 19 July onward has no data, but it’s likely a gap of several days with no recommendations.

Takeaway: the best window is Thursday 16 July afternoon. Go then for clean, waist-high groundswell with decent energy. Everything else is small and forgettable.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sat night. Warm (max 28°C on Sun morning, min 25°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Wed afternoon. Warm (max 28°C on Mon afternoon, min 25°C on Mon morning). Wind will be generally light.

Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
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)
0.8
NNE
8
0.6
NNE
8
0.2
WNW
12
0.3
SW
16
0.3
SSW
20
0.8
NNE
8
0.8
NNE
8
0.9
NNE
7
0.1
SW
13
0.1
W
10
0.1
W
10
0.1
W
10
0.9
NNE
8
1.1
NE
7
0.1
SW
13
0.9
NE
7
0.1
W
18
0.1
W
17
0.2
W
17
0.7
NNE
7
0.3
W
14
Wave Graph
Metric surfscale
Energy kJ
0
0
15
38
0
0
0
0
7
2
2
2
0
0
7
0
6
6
22
0
37
Wind (km/h)
5
NW
15
SW
5
NE
5
W
5
NNW
5
NNW
5
NW
5
WNW
5
ENE
10
NNW
0
NE
5
NE
10
W
10
NNE
5
N
5
WSW
5
WSW
5
N
5
WSW
5
WSW
5
N
Wind State
on
cross
cross
cross-on
glassy
glassy
on
glassy
glassy
cross-on
glassy
cross
cross-on
cross
glassy
cross
glassy
glassy
cross-on
cross-on
glassy
High Tide
6:16PM0.76m
6:52AM0.39m
6:46PM0.71m
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
Low Tide
11:07AM0.14m
1:24AM0.14m
11:51AM0.20m
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
clear
part cloud
part cloud
clear
part cloud
rain showers
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
rain showers
part cloud
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:48
5:48
5:50
5:50
5:50
5:50
<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
 mm
1
1
Temp °C
27
27
26
27
27
26
28
27
26
27
28
26
26
27
26
27
26
26
27
27
27
Feels °C
29
30
29
30
29
29
29
29
27
28
28
27
28
29
28
30
28
29
28
29
30
Swell 1
Height (m)
Direction
Period (s)
0.8
NNE
8
0.6
NNE
8
0.9
NNE
8
0.9
NNE
8
0.7
NNE
8
0.8
NNE
8
0.8
NNE
8
0.9
NNE
7
0.3
SSW
16
0.4
SSW
16
1
NNE
7
0.3
SSW
15
0.9
NNE
8
1.1
NE
7
0.9
NNE
7
0.9
NE
7
1
NE
7
0.8
NNE
7
0.9
NE
7
0.7
NNE
7
0.8
NNE
7
Energy kJ
76
40
117
106
56
78
74
93
51
82
114
42
98
122
96
75
85
61
73
47
64
Swell 2
Height (m)
Direction
Period (s)
0.2
SSW
14
0.6
NNE
5
0.2
WNW
12
0.3
SW
16
0.6
NNE
5
0.3
SSW
18
0.3
SSW
18
0.3
SSW
17
0.1
SW
13
0.1
W
10
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
SSW
14
0.2
SSW
13
0.2
SSW
13
0.6
NE
7
0.3
W
14
Energy kJ
19
17
15
38
15
65
61
58
7
2
74
2
41
40
41
38
37
17
16
43
37
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
17
0.2
SSW
13
0.2
SSW
21
0.3
SSW
21
0.3
SSW
20
0.2
SSW
15
0.2
SSW
14
0.2
SSW
14
0.1
NW
11
0.1
W
10
0.1
SW
13
0.1
W
18
0.1
W
17
0.2
W
17
0.2
SSW
13
0.2
SSW
12
Energy kJ
28
16
45
85
75
21
20
20
5
2
7
6
6
22
16
15
Wind waves
Height (m)
Direction
Period (s)
1
NNE
7
0.9
NNE
7
0.9
NNE
7
Energy kJ
114
96
96
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
2
1
1
3
1
1
2
1
1
2
2
1
1
1
2
1
1
1
Distance (km)
100
100
4
100
4
4
14
4
4
100
4
4
100
19
4
100
4
20
100
4
4
Best forecast wave conditions in Big Island
Rating
(10 max)
1
3
1
3
1
3
1
3
2
2
2
2
2
2
1
2
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
3
2
3
2
3
3
3
2
3
2
2
4
2
2
4
3
2
4
1
2
3
Header Global
Rating
(10 max)
7
5
6
5
9
7
5
6
8
7
4
5
9
8
9
6
5
5
8
5
8
  • 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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