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Surf Forecasts:

Ranches surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 pm Thursday 18 Sep 2025 HST
Forecast update in hr  min  s Forecast update imminent
Ranches surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ranches sea temperature is
26.8° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Ranches this week:

The surf forecast for Ranches over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 8PM. The primary swell is predicted to be 1.0m and 7s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Ranches in the next 12 days are 1.1m 10s and forecast to arrive on Friday (Sep 19) at 8PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Sunday (Sep 21) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Thu 18th Sep)3.5ft (1.0m) 7s
Best Surf 8PM (Fri 19th Sep)3.5ft (1.1m) 10s
Most Powerful 8PM (Fri 19th Sep)3.5ft (1.1m) 10s

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

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

Short Range Forecast Mostly dry. Warm (max 29°C on Thu afternoon, min 25°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Tue afternoon. Warm (max 29°C on Sun afternoon, min 25°C on Sun night). Mainly fresh winds.

Thu
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
1
1
1
1
1
1
2
1
1
1
0
1
1
0
1
0
1
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
N
0.9
NNE
1
NNE
1.1
NNE
1
NE
1.1
NE
1.1
NE
1.1
NE
1.1
NE
1
NE
0.9
NE
0.8
NE
0.8
NE
0.8
NE
0.7
NE
0.8
NE
0.8
NE
0.4
NW
0.8
NE
0.8
NE
0.6
N
Period(s) (?)7791077778888888879669
Wave
Graph
(?)Metric surfscale
Energy kJ (?)39751642148810511811216512011297979564907721565660
Wind
(km/h)
20
ENE
15
ENE
15
NE
25
NE
25
ENE
15
NE
20
NE
15
ENE
10
NE
15
ENE
10
ENE
10
NE
25
NE
10
ENE
20
NE
30
NE
15
ENE
20
NE
25
ENE
15
ENE
5
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffoffoffoffoffoffoffoffoffoffoffoffoffoffoffoffoffoffoff
High Tide
/ height (m)
2:33PM
0.64
3:03AM
0.36
3:06PM
0.61
3:36AM
0.41
3:36PM
0.56
4:08AM
0.46
4:04PM
0.51
4:40AM
0.50
4:31PM
0.46
5:13AM
0.53
4:57PM
0.40
5:48AM
0.55
5:23PM
0.34
6:28AM
0.55
Low Tide
/ height (m)
9:24PM
0.08
8:27AM
0.10
9:44PM
0.07
9:12AM
0.11
10:02PM
0.07
9:56AM
0.12
10:21PM
0.07
10:39AM
0.14
10:39PM
0.07
11:25AM
0.16
10:58PM
0.08
12:15PM
0.19
11:17PM
0.09
1:15PM
0.21
Thu
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Sunrise--6:20--6:20--6:20--6:20--6:20--6:22--6:22
Sunset6:32--6:31--6:30--6:30--6:29--6:28--6:27--
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
thunderstorm
clear
clear
clear
clear
part cloud
Rain (mm)
---------------2-----
Temp. °C292628292628282628292628292627282627282627
Feels °C (?)282728282629272729292729292726292627262729
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for HAW - Oahu

  1. weather stationWind Update The wind is still offshore at Ranches (light winds from the E at Kalaeloa Airport 27 km from Ranches). 0.3m 10s swell from the W to make surfable waves.

    1 hour 50 minutes ago Ranches
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27 km away, 1 h 50 min ago

19 km/h
E
0.0
26.8
Air / Water (°C)
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ranches 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 Ranches at:
surf-forecast.com

Information about the Ranches Surf forecast

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

Ranches is 22 km (14 miles) from Wahiawa. If you plan a vacation in Oahu, look for hotels and other accommodation in Wahiawa. Wahiawa has rooms for a wide range of budgets as well as car hire and transport links.

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