Kua Bay Surf Break

Lat Long: 19.81° N 156.01° W

Kua Bay Surf Forecast and Surf Report

Issued: 1 am 09 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 9 Sep 2026:

  • Best quality surf: Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s period, SW swell with glassy winds.
  • Most powerful swell: Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s period, SW swell with 71 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 15 Sep, 5AM (local time) - 1ft (0.3m), 21s 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 Tuesday (Sep 15) at 5AM. The primary swell is predicted to be 0.3m and 21s period with a secondary swell of 0.4m and 5s. 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 0.3m 21s and forecast to arrive on Tuesday (Sep 15) at 5AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 7s period and expected on Thursday (Sep 10) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 15th Sep)1ft (0.3m) 21s
Best Surf 5AM (Tue 15th Sep)1ft (0.3m) 21s
Most Powerful 5AM (Tue 15th Sep)1ft (0.3m) 21s

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


The Lowdown

G’day, Rusty here. Let’s be straight with you—this stretch ahead is about as flat as a pond. We’re looking at a long, boring run of tiny, weak surf that’s going to test your patience. For the next couple of weeks, there’s just nothing doing at Kua Bay. The swell is barely a ripple, the energy is almost non-existent, and you’d be better off finding another hobby for a while.

Things start off pretty sad. Wednesday and Thursday have a few bits of knee-high slop, but the winds are cross and it’s just messy. Friday is a touch cleaner with a light cross-off, but the swell is still nothing to write home about. Honestly, through the weekend and into the start of next week, we're talking about flat spells and waves that are barely breaking. There’s a brief glassy moment on Monday afternoon with a tiny 1.6ft bump, but it’s from the wrong direction and has no push.

The real kicker is the cold water. When we finally do get a wave, the water temp is sitting at 82°, which is about 1.8° warmer than usual for this time of year. It’s noticeable, but not crazy.

Now, I’m not going to lie to you—this blank run is pretty normal for the area. It does tend not to stay this poor for long, and forecasts can change. We do see a little more life starting to show around the 23rd and 24th, but it’s still small and weak. The energy finally starts to climb from a weak (22) to a moderate (113) by the 23rd, but the waves are only 1.6ft. The promising bit is late on Thursday the 24th, when we get a slightly better 2.3ft swell from the west, with a clean cross-off breeze. It’s not a standout, but it’s the best we’ll see in this whole run. That’s your window, but keep your expectations low. That’s all there is, folks. Stay patient.

Short Range Forecast

Heavy rain (total 23mm), heaviest during Thu afternoon. Warm (max 29°C on Wed morning, min 25°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Sat night. Warm (max 27°C on Sat morning, min 25°C on Sat night). Wind will be generally light.

Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
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
7
0.4
W
6
0.6
NE
7
0.3
SW
16
0.3
SW
18
0.3
SW
10
0.4
SW
10
0.4
SW
9
0.4
SW
15
0.2
WSW
8
0.3
SW
14
0.3
SW
14
0.7
NNE
9
0.2
W
11
0.2
W
11
0.2
W
10
0.5
NNE
4
0.2
SSW
21
0.2
WSW
9
0.2
WSW
9
0.2
WNW
11
Wave Graph
Metric surfscale
Energy kJ
22
11
0
42
49
16
23
21
0
7
29
29
0
9
9
8
10
0
8
7
11
Wind (km/h)
10
WNW
10
WNW
10
S
15
SSW
10
WSW
5
ESE
10
SW
15
SSW
10
SW
10
WNW
10
WSW
5
S
5
WSW
0
WSW
5
NNE
5
WNW
5
W
5
SSW
10
W
10
SW
0
WSW
Wind State
cross-on
cross-on
cross-off
cross-off
cross-on
glassy
cross
cross-off
cross
cross-on
cross-on
cross-off
cross-on
glassy
glassy
cross-on
glassy
glassy
cross-on
cross
glassy
High Tide
2:55PM0.80m
3:19AM0.56m
3:28PM0.76m
3:57AM0.62m
4:00PM0.70m
4:35AM0.67m
4:29PM0.63m
5:12AM0.70m
4:56PM0.55m
5:50AM0.70m
5:21PM0.47m
6:31AM0.69m
5:43PM0.41m
Low Tide
8:14AM0.08m
9:31PM0.07m
9:04AM0.09m
9:55PM0.06m
9:51AM0.11m
10:19PM0.05m
10:36AM0.14m
10:41PM0.06m
11:23AM0.19m
11:04PM0.07m
12:12PM0.23m
11:26PM0.09m
1:09PM0.27m
11:50PM0.11m
part cloud
rain showers
rain showers
rain showers
thunderstorm
thunderstorm
part cloud
clear
rain showers
part cloud
part cloud
rain showers
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:09
6:09
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:31
6:30
6:30
6:29
6:28
6:27
6:25
 mm
1
4
2
6
8
2
1
Temp °C
29
28
28
28
27
26
27
27
26
27
26
26
26
26
26
27
27
26
28
28
27
Feels °C
33
31
33
31
29
29
30
30
28
30
29
30
30
30
30
30
30
30
31
31
29
  • 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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