Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Kua Bay Surf Forecast and Surf Report

Issued: 1 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kua Bay sea temperature is
27.7° C
1.1° 

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 21 Aug 2026:

  • Best quality surf: Sunday 23 Aug, 8AM (local time) - 1.5ft (0.5m), 12s period, WNW swell with glassy winds.
  • Most powerful swell: Sunday 23 Aug, 8AM (local time) - 1.5ft (0.5m), 12s period, WNW swell with 79 kJ wave energy.
  • Next surfable swell (1★+): Sunday 23 Aug, 8AM (local time) - 1.5ft (0.5m), 12s period with WNW 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 Sunday (Aug 23) at 8AM. The primary swell is predicted to be 0.5m and 12s 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 0.5m 12s and forecast to arrive on Sunday (Aug 23) at 8AM. 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 6s period and expected on Saturday (Aug 22) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sun 23rd Aug)1.5ft (0.5m) 12s
Best Surf 8AM (Sun 23rd Aug)1.5ft (0.5m) 12s
Most Powerful 8AM (Sun 23rd Aug)1.5ft (0.5m) 12s

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


The Lowdown

G’day, Rusty here. Looks like the surf gods are taking a holiday for the next couple of weeks. We’ve got a long, dry stretch ahead with nothing really worth paddling out for, so let’s be straight up about it.

The first possible surf shows up on Friday 21 August, but it’s a bit of a tease. Kua Bay has a tiny 2ft west swell pushing through with a period of 10 seconds, and the combined energy is weak (52). The wind is a light cross-onshore, so it’s messy and small. The water temp is 82°, which is a touch warmer than normal for this time of year, so at least it’ll be a nice dip, but you’re not gonna be riding much. Friday afternoon stays small at 2ft, same west swell, but the wind goes cross-shore and it’s a bit choppy. Still a dud.

Saturday 22 August morning is even smaller at 1.0ft with a long 15-second period out of the southwest, but it’s cross-shore wind and the energy is only 70. The afternoon cleans up with glassy conditions and 2ft west swell, but the energy is still weak (57). It’s pretty, but pretty flat.

Sunday 23 August morning bumps up to 111 combined energy – that’s moderate – with a 2ft west-northwest swell and a 12-second period, but the wind is cross-onshore and it’s poor. The afternoon goes glassy again with a tiny 1ft, weak energy (45). Not worth the drive.

Then from Monday 24 August through to Saturday 5 September, we’re looking at a whole lot of nothing. There are days with zero swell, days with tiny 0.7ft or 1.0ft slop, and most of the time the wind is either cross-onshore or just messy. The 31st of August has a 1.0ft southwest swell with a 15-second period, but it’s cross-onshore and choppy. The 2nd of September has a 1.0ft west swell with a 13-second period, but again, cross-shore chop. The 4th of September has a 1.0ft west-northwest swell with a 14-second period, and the afternoon goes clean with a cross-offshore breeze, but the energy is only 35 and the swell is tiny. The 5th of September has a 2ft west swell with 12-second period and 75 energy, but it’s cross-shore or cross-onshore.

Honestly, there’s no standout. Nothing even comes close to being good. The whole 16-day window is a write-off for surf. The break is inconsistent, and this kind of blank run isn’t unusual for the area. The forecasts can change, but right now, you’re better off checking the kite forecast if you’re desperate to get on the water, because the wind is often stronger than the swell.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Sun afternoon. Warm (max 28°C on Fri morning, min 26°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 18mm), heaviest on Mon night. Warm (max 28°C on Mon morning, min 25°C on Wed night). Wind will be generally light.

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
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)
0.5
W
10
0.5
W
11
0.5
W
10
0.3
SW
15
0.5
W
11
0.5
WNW
10
0.5
WNW
12
0.4
WNW
11
0.3
WNW
10
0.2
WNW
11
0.2
WNW
12
0.2
WNW
11
0.8
NE
6
0.9
NE
6
0.7
NNE
5
0.7
NE
5
0.7
NE
5
0.2
SSW
16
0.2
N
5
0.8
NE
6
0.3
SSW
15
Wave Graph
Metric surfscale
Energy kJ
52
59
50
37
57
58
77
45
18
13
13
12
0
0
0
0
0
0
2
0
0
Wind (km/h)
10
WSW
15
SW
0
NNW
10
WSW
5
SW
10
SSW
5
WNW
5
WSW
5
SSW
10
WSW
15
SW
5
SW
5
WSW
5
S
5
NNE
5
NNW
5
SSW
0
SSW
5
WNW
5
SW
5
NE
Wind State
cross-on
cross
glassy
cross
glassy
cross-off
cross-on
glassy
glassy
cross-on
cross
cross
cross
glassy
cross
on
cross-off
glassy
on
glassy
glassy
High Tide
12:03PM0.64m
11:29PM0.26m
12:58PM0.68m
00:53AM0.29m
1:40PM0.72m
1:39AM0.32m
2:15PM0.76m
2:16AM0.36m
2:46PM0.78m
2:51AM0.41m
3:15PM0.79m
3:25AM0.47m
3:42PM0.78m
4:00AM0.52m
Low Tide
8:38PM0.25m
8:45PM0.21m
5:58AM0.15m
9:01PM0.18m
6:54AM0.12m
9:20PM0.16m
7:39AM0.10m
9:39PM0.14m
8:20AM0.08m
9:58PM0.11m
9:00AM0.08m
10:18PM0.10m
clear
part cloud
part cloud
clear
part cloud
clear
part cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
rain showers
part cloud
clear
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:05
6:05
6:05
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:47
6:46
6:45
6:45
6:45
6:44
6:43
 mm
2
2
2
6
3
4
2
1
2
Temp °C
28
28
27
28
27
27
28
28
27
28
28
27
27
28
27
28
27
26
27
27
26
Feels °C
31
31
32
31
30
32
32
32
31
31
31
31
32
32
30
30
30
29
29
30
30
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Kua Bay:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Kua Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest