Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Kua Bay Surf Forecast and Surf Report

Issued: 1 am 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kua Bay sea temperature is
27.5° C
0.9° 

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 16 Aug 2026:

  • Most powerful swell: Tuesday 18 Aug, 11PM (local time) - 1.5ft (0.4m), 13s period, WNW swell with 57 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 13s and forecast to arrive on Tuesday (Aug 18) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Saturday (Aug 22) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Tue 18th Aug)1.5ft (0.4m) 13s

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


The Lowdown

Alright, folks, Rusty here. Let's be real about this one. We're looking at a stretch that's going to be a proper test of patience. Right now, the surf is tiny and the conditions are messy. The wave energy is very weak (32), and it's not going to get much better for a long while.

The first solid week is a write-off. We're talking day after day of knee-high dribble. The swell is coming from the WNW, which is the right direction for Kua Bay, but it's just got no power. The wind is mostly light cross-onshore, which is not doing us any favours. To be honest, from Sunday the 16th right through the week, everything is scoring a zero. You'll see a few glassy moments on Monday the 17th afternoon and Tuesday the 18th afternoon, but with waves only 1.0ft, there's nothing to ride. It's a frustrating stretch.

We've got a gap of about 9 days with no real hope. The energy stays low, barely cracking double digits, and the wind is all over the shop. Don't waste your time staring at the ocean.

There is a tiny glimmer on the horizon. By the time we get to Wednesday the 26th of August, the swell picks up a bit. We're looking at 2ft from the WNW, and the combined energy climbs to 111 (moderate). That's the first time we see some real push. The wind is very light, almost glassy, so it could be clean. This is still a very small wave, but it's the best we've got.

Then, the real standout finally appears on Monday, the 31st of August. I'm talking about the very last session in the forecast. Kua Bay is going to see a 1ft swell from the WNW with a long period of 15 seconds. The combined energy gets up to 123 (moderate). The wind is a light cross-offshore from the SSW, which is the cleanest wind we've seen in the whole run. That's the one to circle. It's a long way out, so don't get too attached, but it's the only time this forecast looks like it's worth a paddle.

The water temp is about average for this time of year, so no surprises there.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Sun morning. Warm (max 28°C on Sun morning, min 26°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

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

Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
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
WNW
13
0.4
WNW
12
0.3
WNW
12
0.3
WNW
11
0.3
WNW
11
0.3
WNW
11
0.3
WNW
11
0.3
WNW
11
0.3
WNW
13
0.4
WNW
12
0.3
WNW
12
0.3
SW
16
0.3
SW
18
0.3
SW
17
0.3
W
11
0.2
W
11
0.3
SW
16
0.3
W
10
0.3
SW
15
0.3
WNW
10
0.3
SW
15
Wave Graph
Metric surfscale
Energy kJ
32
49
27
25
25
25
25
25
33
48
28
41
49
47
21
9
39
18
37
20
36
Wind (km/h)
10
WNW
15
NNW
10
S
5
WNW
0
SW
10
SSW
10
W
5
WSW
5
S
5
WNW
5
W
5
SSW
10
WNW
5
NW
5
SSW
10
WNW
10
W
5
SSW
10
W
10
SW
5
SSE
Wind State
cross-on
cross-on
cross-off
cross-on
glassy
cross-off
cross-on
glassy
cross-off
cross-on
cross-on
glassy
cross-on
on
cross-off
on
cross-on
cross-off
cross-on
cross
glassy
High Tide
6:02PM0.58m
7:19AM0.61m
6:25PM0.49m
8:16AM0.61m
6:42PM0.41m
9:26AM0.61m
10:49AM0.62m
12:03PM0.64m
11:29PM0.26m
12:58PM0.68m
00:53AM0.29m
Low Tide
12:18PM0.24m
00:32AM0.09m
1:18PM0.30m
00:58AM0.11m
2:41PM0.35m
1:28AM0.14m
2:09AM0.16m
3:15AM0.18m
8:38PM0.25m
8:45PM0.21m
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
thunderstorm
rain showers
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:03
6:05
6:05
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:51
6:51
6:50
6:49
6:49
6:47
6:46
 mm
1
1
1
1
1
Temp °C
28
28
28
28
27
27
26
27
26
27
28
27
27
27
26
27
28
27
28
28
27
Feels °C
32
32
32
33
32
32
31
31
30
30
30
31
30
30
30
30
31
30
31
30
31
  • 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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