Surf Forecast Surf Report

Kahuku Ranch surfForecast / HAW – Big Island / USA

information circle12 Day Weather and Surf, issued 1 am Thursday 13 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
25.1° C
(Which is slightly warmer than usual)


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 Friday (Mar 14) at 11PM. The primary swell is predicted to be 1.1m and 16s period with a secondary swell of 0.2m and 16s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Kahuku Ranch in the next 12 days are 1.1m 16s and forecast to arrive on Friday (Mar 14) 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 2.5m 8s period and expected on Thursday (Mar 13) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Fri 14th Mar)3.5ft (1.1m) 16s
Best Surf 2AM (Sat 15th Mar)3.5ft (1.0m) 16s
Most Powerful11PM (Fri 14th Mar)3.5ft (1.1m) 16s

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

Updates in  hr  min  s Forecast update imminent
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
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
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
NW
0.4
NW
0.4
NW
0.8
WNW
0.9
NW
1
NW
1
NW
0.9
NW
0.9
NW
0.6
NW
0.6
WNW
0.5
NW
0.3
SSW
0.4
NW
0.3
SSW
0.3
SSW
0.4
SSW
0.4
NW
0.6
NW
0.6
NW
0.8
NW
0.6
NW
0.6
NW
0.6
NW
0.6
NW
0.6
NW
0.7
NW
0.7
NW
0.8
NW
0.6
NW
0.6
NW
0.6
NW
0.6
NW
0.8
NW
1
NW
1
NW
Period(s) (?)141421181816151413131212181116161818161514131313201816161513131316151414
Wave
Graph
(?)Metric surfscale
Energy (?)747111141344449641828825313294676129505010280208178248144140104239260260236255144138136163262401395
Wind
(km/h)
45
E
40
E
35
ENE
35
E
25
ENE
20
ENE
20
E
20
E
20
ENE
30
E
30
E
25
ENE
30
E
25
E
25
ENE
35
E
30
ENE
30
ENE
35
E
35
E
25
ENE
40
E
35
E
35
ENE
35
E
40
E
30
ENE
40
E
30
E
30
ENE
25
E
30
E
20
NE
40
E
30
E
30
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
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
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
cross-
off
High Tide
/ height (m)
3:42PM
0.73
3:50AM
0.84
4:12PM
0.78
4:14AM
0.79
4:42PM
0.81
4:38AM
0.73
5:12PM
0.82
5:00AM
0.66
5:45PM
0.81
5:21AM
0.59
6:22PM
0.79
5:39AM
0.53
7:07PM
0.75
5:55AM
0.47
8:10PM
0.72
5:50AM
0.41
9:44PM
0.71
11:17PM
0.75
11:40AM
0.36
12:19AM
0.81
12:47PM
0.44
1:05AM
0.87
Low Tide
/ height (m)
9:46AM
0.11
9:36PM
0.12
10:06AM
0.10
10:12PM
0.14
10:26AM
0.09
10:47PM
0.18
10:45AM
0.09
11:23PM
0.22
11:06AM
0.11
12:01AM
0.27
11:27AM
0.12
12:46AM
0.33
11:50AM
0.15
1:48AM
0.38
12:19PM
0.18
4:07AM
0.40
1:01PM
0.22
2:28PM
0.25
7:24AM
0.29
4:33PM
0.25
7:39AM
0.23
5:59PM
0.21
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Sunrise6:31--6:31--6:31--6:30--6:28--6:28--6:26--6:26--6:26--6:24--6:24--6:22--
Sunset-6:30--6:31--6:31--6:31--6:32--6:32--6:32--6:32--6:34--6:34--6:34--6:34-
clearclearclearclearclearclearclearclearclearclearclearclearclearpart cloudpart cloudpart cloudcloudpart cloudpart cloudpart cloudpart cloudclearclearclearclearpart cloudclearclearclearclearclearclearclearclearclearclear
Rain (mm)
------------------------------------
Temp. °C242423242523242523252523242523252423252523252523252523242523252624252623
Feels °C (?)181818182020232522222220212221222220212120192118212018192220232421202220

Short Range Forecast: Mostly dry. Warm (max 25°C on Fri afternoon, min 22°C on Thu night). Winds decreasing (strong winds from the E on Thu morning, light winds from the ENE by Fri night).

Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Sun morning, min 22°C on Sun night). Mainly fresh winds.

Days 6-9 Weather Summary Mostly dry. Warm (max 25°C on Wed morning, min 22°C on Fri night). Mainly strong winds.

Long Range Forecast: Mostly dry. Warm (max 26°C on Sun afternoon, min 22°C on Sat 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)
<span class="translation_missing" title="translation missing: en.leaflet.map_placeholder_alt">Map Placeholder Alt</span>
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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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