Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Kua Bay Surf Forecast and Surf Report

Issued: 1 pm 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kua Bay sea temperature is
27.4° 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 6 Aug 2026:

  • Most powerful swell: Saturday 8 Aug, 8PM (local time) - 3.5ft (1.0m), 6s period, NE swell with 66 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 1.0m 6s and forecast to arrive on Saturday (Aug 08) at 8PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 7s period and expected on Sunday (Aug 09) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Sat 8th Aug)3.5ft (1.0m) 6s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s cookin' for Kua Bay over the next couple weeks.

Honestly, this is a tough one. We are looking at a long, long stretch of tiny, crummy surf. The models are showing a whole lot of nothing for days on end. That first recommendation to paddle out doesn’t roll around until the 16th of August. Before that, we’re looking at an 11-day gap with almost no energy in the water and persistent poor conditions. It’s a dry spell, for sure.

The first real glimmer of hope shows up on Sunday afternoon, the 16th of August. The wave energy is starting to build, with a combined swell energy of (100) - that's moderate juice. We’ve got a 2ft swell rolling in from the W, with a period of 14 seconds. That’s a long-period groundswell, which will bring in some clean, well-shaped lines but you’ll have to wait for the sets. It won’t be perfect, but the wind is forecast to go glassy out of the SW. That’s the key here. Glassy conditions at Kua Bay are a treat, and it’ll turn that small wave into something clean and fun.

Then on Monday afternoon, the 17th of August, it gets a bit more interesting. The swell is still 2ft from the W, but the combined energy jumps to (112) - a solid moderate push. The period is a juicy 13 seconds. Again, the wind is the story: glassy conditions from the NNE. This is likely the best session of the whole window. Smooth, clean, and surprisingly fun for a spot that’s been flat.

The water temp is sitting at 81°, which is about 2° warmer than normal for this time of year. That’s a nice treat – feels like bathwater, but in a good way.

A couple things to note: Kua Bay is best on a WNW swell direction, and these swells are coming from the W and WNW, which is a good match. The spot is an exposed beach break, so with that long-period swell (over 11 seconds), the waves will be peeling nicely but could be a bit straight at times. It’s a spot that’s *fairly consistent* but the crowds are *sometimes* an issue, so expect a few others out there on the glassy days.

The longer-range window does show a few more small pulses, but nothing that will shake the world. The 15th of August morning has a touch more energy (109), but the wind is cross-onshore, messing it up. The real winner is that 17th afternoon.

Alright, that’s the skinny. It’s been a slow patch, but there’s a couple of windows to wet a line. Stay patient.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

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

Wed
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
W
12
0.3
N
5
0.2
W
12
0.2
W
12
0.2
W
12
0.2
W
12
0.2
W
12
0.2
W
13
0.2
SSW
18
0.8
NNE
6
0.9
NE
6
0.3
W
13
0.3
W
12
0.3
W
12
0.3
W
11
0.3
W
11
0.3
W
10
0.2
W
10
0.3
W
10
0.3
W
10
Wave Graph
Metric surfscale
Energy kJ
11
5
11
12
13
11
11
13
0
39
0
28
25
23
21
21
18
8
19
19
Wind (km/h)
15
SSW
5
WNW
5
W
15
SSW
5
NW
5
NNW
15
SW
5
W
10
W
5
NW
0
W
10
WSW
5
W
0
SE
5
W
10
WSW
5
SE
10
W
10
WSW
0
SW
Wind State
cross-off
glassy
cross-on
cross-off
glassy
on
cross
glassy
cross-on
on
glassy
cross-on
cross-on
glassy
cross-on
cross
glassy
cross-on
cross-on
glassy
High Tide
7:38PM0.40m
10:50AM0.68m
8:46PM0.32m
12:04PM0.74m
11:08PM0.28m
1:05PM0.81m
00:47AM0.29m
1:56PM0.86m
1:52AM0.32m
2:42PM0.90m
2:44AM0.37m
3:22PM0.91m
3:31AM0.43m
Low Tide
4:10PM0.36m
2:41AM0.10m
6:56PM0.32m
3:45AM0.09m
8:07PM0.25m
5:01AM0.08m
8:44PM0.19m
6:14AM0.06m
9:17PM0.14m
7:17AM0.03m
9:48PM0.11m
8:12AM0.02m
10:18PM0.09m
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
rain showers
part cloud
clear
thunderstorm
thunderstorm
part cloud
thunderstorm
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:01
6:01
6:01
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:58
6:57
6:57
6:55
6:54
6:54
 mm
1
1
3
1
Temp °C
27
26
27
28
26
28
27
26
27
28
27
28
28
28
28
28
27
27
27
27
Feels °C
29
29
30
30
30
30
29
29
29
31
31
31
30
32
31
30
30
30
29
30
  • 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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