Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Kua Bay Surf Forecast and Surf Report

Issued: 7 pm 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kua Bay sea temperature is
27.8°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 5 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 2AM (local time) - 6ft (1.8m), 13s period, WSW swell with glassy winds.
  • Most powerful swell: Monday 7 Sep, 11PM (local time) - 6ft (1.8m), 14s period, WSW swell with 1,230 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 8PM (local time) - 3.5ft (1.0m), 13s period with SW 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 (Sep 06) at 8PM. The primary swell is predicted to be 1.0m and 13s 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 1.8m 14s and forecast to arrive on Monday (Sep 07) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 12s period and expected on Saturday (Sep 05) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sun 6th Sep)3.5ft (1.0m) 13s
Best Surf 2AM (Tue 8th Sep)6ft (1.8m) 13s
Most Powerful11PM (Mon 7th Sep)6ft (1.8m) 14s

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


The Lowdown

Alright folks, Rusty here. Let’s get straight into it. Things are looking pretty quiet around Kua Bay for the next couple of weeks. There’s a bit of a slow start, but we do get a small window of rideable surf around the 7th and 8th of September before it fades out again.

The surf kicks off with a whimper on Sunday the 6th. You’ll see a small 3ft swell from the SW creeping in during the afternoon, but it’s got a cross-onshore wind messing it up, so don’t expect much. The combined energy is moderate at 250, but the conditions are marginal.

Monday the 7th is the pick of the bunch, and it’s not a world-beater, but it’s the best we’ve got. Morning sees a 4ft swell from the SW, period at 13 seconds – that’s a nice groundswell, giving the waves some shape and push. The combined energy jumps to 569 (moderate), and the wind is light cross-onshore, so it’ll be a bit bumpy but surfable. The afternoon improves slightly: the swell bumps to 5ft, direction shifts to WSW, and the period stretches to a very long 14 seconds, with energy hitting 857. The wind turns offshore from the NW at just 5 km/h. That’s glassy and clean, making for the best shape of the whole outlook. That afternoon session on Monday 7th is the standout. Just know that with a 5ft swell, it’s pushing into the intermediate zone, and it’s not a beginner wave. This is a point break setup, so that long-period groundswell will wrap in nicely, and the offshore wind will keep the faces clean. Crowds are possible here, so get out there early.

Tuesday the 8th holds on a bit. Morning swell is 5ft from the WSW, period 11 seconds, energy 637 (moderate), but it’s onshore wind from the WNW. Afternoon drops to 5ft, and the wind is still onshore, so it’s not as clean as Monday. Still surfable for the keen.

After that, it’s a long drop-off. Wednesday the 9th morning drops to a tiny 2ft, though the wind goes glassy. That’s pretty, but there’s no power. The combined energy is a weak 80. From Wednesday afternoon onward, it’s all poor surf conditions with tiny swells or flat spells, with the combined energy rarely getting above 50. There’s a long gap of no real surf from the 9th through to the end of the outlook. A few days see less than 2ft, and many days show zero swell. The water temperature is about average for this time of year, nothing unusual there.

So, bottom line: if you’re free on Monday afternoon the 7th of September, get in the water at Kua Bay. That’s your one true shot. After that, the ocean goes to sleep.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Sun afternoon. Warm (max 29°C on Mon afternoon, min 25°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Wed afternoon. Warm (max 28°C on Mon night, min 26°C on Tue night). Wind will be generally light.

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
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
1
2
2
2
4
1
2
2
1
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)
0.6
SSW
12
0.8
SSW
12
0.8
SSW
12
0.9
SW
11
0.9
SW
12
1
SW
11
1.1
SW
12
1.3
SW
13
1.5
WSW
14
1.8
WSW
13
1.6
WSW
11
1.5
W
11
1
W
10
0.6
WNW
9
0.4
WNW
7
0.3
SW
7
0.3
SW
16
0.3
SW
18
0.8
NE
8
Wave Graph
Metric surfscale
Energy kJ
0
0
0
0
0
250
330
569
857
1155
637
533
204
61
16
8
42
49
0
Wind (km/h)
0
NNW
15
SW
10
WSW
5
N
10
W
10
WSW
5
W
10
WSW
5
NW
5
N
10
WNW
10
WNW
10
SSW
5
WSW
10
S
10
NE
10
SSW
10
W
5
ENE
Wind State
glassy
cross
cross
cross-on
cross-on
cross-on
glassy
cross-on
on
glassy
on
on
cross-off
glassy
cross-off
cross
cross-off
cross-on
glassy
High Tide
9:25PM0.26m
11:46AM0.74m
11:54PM0.28m
12:47PM0.78m
1:07AM0.33m
1:36PM0.81m
1:57AM0.40m
2:18PM0.82m
2:40AM0.48m
2:55PM0.80m
3:19AM0.56m
3:28PM0.76m
3:57AM0.62m
Low Tide
3:19AM0.14m
7:46PM0.20m
4:58AM0.14m
8:14PM0.15m
6:18AM0.11m
8:41PM0.12m
7:21AM0.09m
9:06PM0.09m
8:14AM0.08m
9:31PM0.07m
9:04AM0.09m
9:55PM0.06m
clear
clear
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
rain showers
rain showers
rain showers
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:36
6:35
6:34
6:34
6:32
6:31
6:30
 mm
2
1
1
1
1
2
Temp °C
28
27
28
26
28
27
27
28
29
28
28
28
27
28
28
27
27
26
26
Feels °C
32
29
31
29
31
29
31
31
33
32
31
31
32
33
32
31
29
27
29
  • Map Icons:
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  • 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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