Kua Bay surf break

Kua Bay surfForecast / HAW – Big Island / USA

information circle12 Day Weather and Surf, issued 7 am Friday 12 Dec 2025 HST
Forecast update in hr  min  s Forecast update imminent
Kua Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kua Bay sea temperature is
26.1° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Kua Bay this week:

The surf forecast for Kua Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Dec 12) at 5PM. The primary swell is predicted to be 0.4m and 12s period with a secondary swell of 0.4m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Kua Bay in the next 12 days are 1.2m 15s and forecast to arrive on Monday (Dec 15) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 13s period and expected on Wednesday (Dec 17) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Fri 12th Dec)1.5ft (0.4m) 12s
Best Surf 8AM (Mon 15th Dec)3.5ft (1.0m) 14s
Most Powerful 2PM (Mon 15th Dec)4ft (1.2m) 15s

Table - best surf conditions forecast for Kua Bay over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 26°C on Sat morning, min 23°C on Fri morning). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Mon afternoon. Warm (max 26°C on Tue morning, min 23°C on Wed night). Wind will be generally light.

Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
1
1
0
0
0
0
0
1
2
2
3
1
0
0
1
0
2
1
1
2
Swell
Height Map
Wave Height (m) & direction (?)
0.3
NW
0.4
NNW
0.6
N
0.6
N
0.7
N
0.6
N
0.5
N
0.4
NW
0.7
NW
1.1
N
1.2
N
1.2
N
1
N
1
N
1
N
1
N
0.5
WNW
1.1
WNW
0.8
N
0.8
N
0.8
N
Period(s) (?)111211121111101514161413131212131412131213
Wave
Graph
(?)Metric surfscale
Energy kJ (?)234685101116794755191577585507331301287326110344199196215
Wind
(km/h)
10
WSW
10
SSW
15
S
20
SSW
25
SSW
20
S
10
SW
10
SW
10
NNE
10
WNW
10
NE
5
N
25
SSW
15
NNE
15
NNE
10
WNW
15
NNW
5
SSW
5
WNW
10
NW
10
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrosscrossoncrossglasscross-
off
cross-
on
cross-
on
cross-
on
cross-
on
glassononcross-
off
High Tide
/ height (m)
9:35AM
0.53
12:09AM
0.56
10:30AM
0.46
12:52AM
0.63
11:30AM
0.41
1:28AM
0.70
12:29PM
0.37
2:02AM
0.75
1:22PM
0.34
2:35AM
0.79
2:07PM
0.33
3:09AM
0.82
2:47PM
0.32
3:44AM
0.83
Low Tide
/ height (m)
4:50PM
0.12
5:56AM
0.37
5:23PM
0.12
7:27AM
0.33
5:56PM
0.11
8:27AM
0.28
6:29PM
0.10
9:12AM
0.24
7:04PM
0.08
9:49AM
0.20
7:39PM
0.07
10:24AM
0.18
8:14PM
0.05
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Sunrise6:48--6:48--6:50--6:50--6:50--6:50--6:52--
Sunset-5:45--5:45--5:46--5:46--5:46--5:47--5:47-
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
thunderstorm
part cloud
part cloud
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
Rain (mm)
----------1----------
Temp. °C252524262624252524252525262524252524252524
Feels °C (?)272726252524272727282629262625272726282726
  • 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 12 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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