Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Kua Bay Surf Forecast and Surf Report

Issued: 7 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kua Bay sea temperature is
27.7°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 5 Sep 2026:

  • Best quality surf: Monday 7 Sep, 5PM (local time) - 6ft (1.9m), 14s period, WSW swell with glassy winds.
  • Most powerful swell: Monday 7 Sep, 8PM (local time) - 7ft (2.1m), 14s period, WSW swell with 1,797 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 8PM (local time) - 4.5ft (1.3m), 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 1.3m 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 2.1m 14s and forecast to arrive on Monday (Sep 07) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 12s period and expected on Sunday (Sep 06) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sun 6th Sep)4.5ft (1.3m) 13s
Best Surf 5PM (Mon 7th Sep)6ft (1.9m) 14s
Most Powerful 8PM (Mon 7th Sep)7ft (2.1m) 14s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it.

Right off the bat, we’re looking at a pretty quiet stretch for Kua Bay. The first few days are a total write-off, with no real swell showing up and poor surf conditions. Friday the 4th and Saturday the 5th are both flat and messy, with light cross-onshore winds just ruining any chance of a wave. Sunday the 6th sees a tiny pulse of 3.6ft SW swell late in the afternoon, but the period is a solid 12 seconds and the wind is light cross-on. It’s a marginal call, but it’s the first real sign of life.

The real standout window, and the only one worth getting excited about, is Monday the 7th and Tuesday the 8th. Monday afternoon brings a nice 6.2ft swell from the WSW with a 14-second period, and the wind goes glassy. That’s the sweet spot. The combined energy is up at 1504, which is solid, and the water temp is sitting at 81.9° with a normal anomaly for this time of year. This is the best on offer – clean, long-period groundswell, perfect for Kua Bay’s exposed setup. Surfers with some experience are going to have a blast. Tuesday morning follows it up with a 5.6ft WSW swell, 11 seconds, and a light offshore from the SSW. That’s clean, well-shaped, and the energy is still strong at 764. It’s not quite as good as Monday, but it’s still a very good session.

After that, the swell drops off a cliff. From Wednesday the 9th right through to the end of the 16-day run, we’re looking at tiny, weak waves – mostly under 2.3ft – with poor conditions and light onshore winds. The energy readings are all in the double digits, which is basically nothing. There’s a long gap of flat, small surf from the 9th to the 19th, with nothing worth paddling for. The water stays warm, but the ocean just isn’t cooperating.

Best bet: Monday 7th afternoon. That 6.2ft WSW swell, 14-second period, and glassy wind at Kua Bay is the clear winner. Get out there.

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

Light rain (total 5mm), mostly falling on Tue night. Warm (max 29°C on Mon afternoon, min 26°C on Tue night). Wind will be generally light.

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
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
1
2
2
4
4
3
2
1
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
S
12
0.9
NE
6
0.6
SSW
12
0.8
SSW
12
0.9
SSW
12
1
SW
12
1.1
SW
12
1.1
SW
12
1.1
SW
13
1.6
SW
14
1.9
WSW
14
2.1
WSW
13
1.7
WSW
11
1.6
W
11
0.9
WNW
10
0.5
WNW
9
0.4
W
6
0.3
SW
7
0.3
SW
16
0.3
SW
18
0.4
SW
16
Wave Graph
Metric surfscale
Energy kJ
0
52
0
0
0
0
0
392
363
934
1504
1430
764
651
173
44
13
8
42
49
0
Wind (km/h)
10
WSW
10
NNE
5
NNW
10
WSW
10
W
5
SSW
10
W
5
WSW
5
W
10
W
5
WSW
15
S
15
SSW
10
SW
5
WSW
10
WSW
10
S
15
NNE
10
SW
10
WNW
5
SE
Wind State
cross-on
cross
cross-on
cross
cross-on
glassy
cross-on
cross-on
cross-on
cross-on
glassy
cross-off
cross-off
cross
cross-on
cross-on
cross-off
cross
cross-off
on
glassy
High Tide
10:26AM0.70m
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
7:14PM0.25m
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
part cloud
clear
clear
part cloud
clear
part cloud
rain showers
rain showers
part cloud
part cloud
clear
clear
part cloud
rain showers
rain showers
part cloud
rain showers
part cloud
part cloud
clear
<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
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
2
2
1
2
Temp °C
28
28
26
28
27
26
28
28
27
28
29
28
29
28
27
26
27
26
26
26
26
Feels °C
31
31
30
30
30
29
31
31
31
31
33
31
31
30
32
30
30
29
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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