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Surf Forecasts:

Kua Bay surf break

Kua Bay surfForecast / HAW – Big Island / USA

information circle16 Day Weather and Surf, issued 7 am Wednesday 18 Mar 2026 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
25.2° 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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Mar 18) at 5PM. The primary swell is predicted to be 0.8m 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 16 days are 0.9m 13s and forecast to arrive on Wednesday (Mar 18) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 10s period and expected on Tuesday (Mar 24) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Wed 18th Mar)2.5ft (0.8m) 12s
Best Surf 5PM (Wed 18th Mar)2.5ft (0.8m) 12s
Most Powerful 2PM (Wed 18th Mar)3ft (0.9m) 13s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 15mm), heaviest on Thu afternoon. Warm (max 26°C on Wed morning, min 23°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 26mm), heaviest during Sat night. Warm (max 25°C on Sat morning, min 21°C on Sun morning). Wind will be generally light.

Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
2
1
0
1
1
1
1
0
0
0
0
1
0
1
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
N
0.8
N
0.8
N
0.8
N
0.8
N
0.8
N
0.8
N
0.7
N
0.3
SW
0.5
W
0.5
W
0.4
WNW
0.4
NW
0.4
NW
0.4
WNW
0.4
WNW
0.6
N
0.3
SW
0.2
WNW
0.2
WNW
0.1
NW
Period(s) (?)131212111111101019121212161414131014121211
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2761991841631551461311005772725461597868683314135
Wind
(km/h)
10
SSW
15
SSW
10
SSW
5
W
5
S
15
S
15
SW
20
SSW
15
S
20
S
15
SSW
10
SSE
20
SSE
15
SSW
5
WSW
15
N
15
NE
20
NE
10
NNE
5
NNW
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
on		cross-
off		cross-
off		crosscross-
off		cross-
off		cross-
off		cross-
off		offoffcross-
off		glasscross-
on		crosscrosscrossglasscross-
off
High Tide
/ height (m)
3:58PM
0.66
3:57AM
0.67
4:36PM
0.72
4:28AM
0.61
5:16PM
0.76
5:00AM
0.53
6:01PM
0.78
5:32AM
0.45
6:52PM
0.77
6:06AM
0.37
7:54PM
0.74
6:48AM
0.30
9:13PM
0.72
Low Tide
/ height (m)
9:49AM
0.05
9:56PM
0.11
10:12AM
0.03
10:44PM
0.14
10:37AM
0.02
11:36PM
0.17
11:04AM
0.03
12:35AM
0.21
11:34AM
0.04
1:49AM
0.25
12:09PM
0.07
3:39AM
0.27
12:52PM
0.11
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Sunrise6:30--6:28--6:28--6:26--6:26--6:24--6:24--
Sunset-6:34--6:34--6:35--6:35--6:35--6:35--6:36-
part cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
rain showers
part cloud
thunderstorm
thunderstorm
cloud
thunderstorm
heavy rain
mod rain
light rain
cloud
part cloud
thunderstorm
cloud
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
-31-36-11-21192--2-121
Temp. °C262624252524262625252524232323252524242524
Feels °C (?)282725272726272627242526232324252626252727
  • 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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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.

View detailed surf forecast for Kua Bay at:
surf-forecast.com

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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