Surf Forecast Surf Report

Kahuku Ranch surfForecast / HAW – Big Island / USA

information circle12 Day Weather and Surf, issued 7 pm Sunday 30 Mar 2025 HST
Forecast update in hr  min  s Forecast update imminent
Kahuku Ranch surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kahuku Ranch sea temperature is
25.4° C
(Which is 1.0°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Kahuku Ranch this week:

The surf forecast for Kahuku Ranch over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Mar 31) at 2AM. The primary swell is predicted to be 0.4m and 16s period with a secondary swell of 0.4m and 11s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Kahuku Ranch in the next 12 days are 0.5m 18s and forecast to arrive on Sunday (Apr 06) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 9s period and expected on Tuesday (Apr 01) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Mon 31st Mar)1.5ft (0.4m) 16s
Best Surf 2AM (Mon 31st Mar)1.5ft (0.4m) 16s
Most Powerful11PM (Sun 6th Apr)1.5ft (0.5m) 18s

Table - best surf conditions forecast for Kahuku Ranch over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Monday
31
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Fri
11
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
SW
0.4
SSW
0.3
SSW
0.3
SSW
0.3
SSW
0.4
SW
0.4
WNW
0.6
WNW
0.4
SW
0.6
WNW
0.6
WNW
0.6
WNW
0.6
WNW
0.6
WNW
0.3
SW
0.4
NW
0.3
SSW
0.3
SSW
0.3
SSW
0.3
SSW
0.3
S
0.5
S
0.5
S
0.6
S
0.7
SSW
0.6
S
0.6
S
0.6
S
0.6
S
0.5
S
0.4
S
0.4
S
0.5
S
0.5
S
0.5
S
0.5
S
Period(s) (?)161515141318101116101010991391414131919181816161615151414181616151514
Wave
Graph
(?)Metric surfscale
Energy (?)617142403580407668716564565431194141347366160160198269183159155148969785125110104100
Wind
(km/h)
20
NE
30
ESE
30
ESE
25
ENE
25
E
30
E
30
E
30
E
10
E
20
ENE
25
E
10
ESE
15
ENE
15
E
10
E
20
ENE
25
E
20
ENE
20
ENE
30
E
20
ENE
25
ENE
25
E
25
E
20
ENE
30
E
20
E
25
ENE
35
E
30
ENE
35
ENE
40
E
30
E
25
ENE
35
E
30
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
High Tide
/ height (m)
4:42AM
0.69
5:36PM
0.99
5:18AM
0.59
6:25PM
0.96
5:55AM
0.50
7:23PM
0.90
6:40AM
0.42
8:36PM
0.83
8:08AM
0.35
10:06PM
0.79
11:00AM
0.36
11:28PM
0.79
12:30PM
0.44
12:28AM
0.79
1:17PM
0.52
1:12AM
0.80
1:52PM
0.61
1:47AM
0.79
2:22PM
0.70
2:17AM
0.77
2:51PM
0.77
2:45AM
0.74
3:19PM
0.83
Low Tide
/ height (m)
11:12PM
0.15
10:45AM
-0.01
12:07AM
0.21
11:18AM
0.02
1:11AM
0.27
11:54AM
0.08
2:38AM
0.32
12:37PM
0.15
4:46AM
0.32
1:41PM
0.22
6:20AM
0.27
3:35PM
0.28
7:03AM
0.23
5:25PM
0.28
7:31AM
0.19
6:37PM
0.25
7:55AM
0.16
7:29PM
0.22
8:16AM
0.13
8:13PM
0.20
8:35AM
0.11
8:52PM
0.19
8:55AM
0.09
Monday
31
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Fri
11
Sunrise-6:16--6:16--6:16--6:15--6:13--6:13--6:11--6:11--6:11--6:09--6:09--6:07-
Sunset--6:36--6:36--6:36--6:37--6:37--6:37--6:37--6:37--6:37--6:37--6:37--6:38
clearclearclearclearclearclearpart cloudclearpart cloudpart cloudclearpart cloudclearclearpart cloudclearclearpart cloudpart cloudclearpart cloudpart cloudclearpart cloudclearclearrain showersrain showersclearrain showersclearclearpart cloudpart cloudclearclear
Rain (mm)
--------------------------21-1------
Temp. °C252626242526232526242525242626242626242626242525242525242524232525232525
Feels °C (?)242323222224202125242323242425242324222223222323222223212122192022192021

Short Range Forecast: Mostly dry. Warm (max 26°C on Mon morning, min 22°C on Tue night). Winds decreasing (fresh winds from the ESE on Mon afternoon, light winds from the E by Wed afternoon).

Days 3-6 Weather Summary Mostly dry. Warm (max 26°C on Fri morning, min 23°C on Wed night). Mainly fresh winds.

Days 6-9 Weather Summary Light rain (total 2mm), mostly falling on Tue afternoon. Warm (max 26°C on Sun morning, min 23°C on Sun night). Mainly fresh winds.

Long Range Forecast: Light rain (total 2mm), mostly falling on Tue night. Warm (max 25°C on Wed morning, min 23°C on Tue night). Mainly strong winds.

  • 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 Kahuku Ranch Surf forecast

The above surf forecast table for Kahuku Ranch provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Kahuku Ranch can be found by selecting the local surf guide option on the grey menu. Our Kahuku Ranch 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 (Kahuku Ranch) 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 Kahuku Ranch 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.

Kahuku Ranch is 107 km (66 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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