Ranches Surf Break

Lat Long: 21.50° N 158.23° W

Ranches Surf Forecast and Surf Report

Issued: 7 pm 15 Sep 2026 (local time)

Forecast update in  hr  min

Today's Ranches sea temperature is
27.1°C
0.1° 

Ranches surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Ranches surf forecast from 16 Sep 2026:

  • Best quality surf: Wednesday 16 Sep, 2AM (local time) - 3ft (0.9m), 19s period, SW swell with offshore winds.
  • Most powerful swell: Wednesday 16 Sep, 2AM (local time) - 3ft (0.9m), 19s period, SW swell with 535 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 16 Sep, 2AM (local time) - 3ft (0.9m), 19s period with SW swell.

Best Forecast Surf Conditions for Ranches this week:

The surf forecast for Ranches over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 16) at 2AM. The primary swell is predicted to be 0.9m and 19s period with a secondary swell of 0.7m and 7s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Ranches in the next 16 days are 0.9m 19s and forecast to arrive on Wednesday (Sep 16) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Sunday (Sep 20) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 16th Sep)3ft (0.9m) 19s
Best Surf 2AM (Wed 16th Sep)3ft (0.9m) 19s
Most Powerful 2AM (Wed 16th Sep)3ft (0.9m) 19s

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


The Lowdown

Right now, the surf at Ranches is pretty gutless. We’ve got a run of weak, short-period swells coming in from the northeast, and honestly, it’s looking pretty ordinary for the next week or so. The wave energy is mostly sitting in the weak range, with readings like 34 to 178, so there’s just not much push out there. The wind is offshore a lot of the time, which is nice and clean, but small surf and short periods mean it’s not going to be doing much.

On Wednesday the 16th, we’ve got a small 0.7m NE swell with a 7-second period. It’s clean early, but you’ll be fighting for scraps. The afternoon bumps up to 0.9m but the wind backs off into a cross-off and it’s still pretty weak. Thursday the 17th looks slightly better with 1.3m on the morning, but that’s about as good as it gets for a while. The swell holds around a metre through the rest of the week, but with periods of just 6-7 seconds, it’s going to be a bit lumpy and disorganized.

There’s a big gap early on Sunday the 20th with no swell at all – a flat spell – but a very long-period 15-second swell from the southwest shows up in the afternoon, pushing just 0.5m. That’s a tease more than anything. The following week starts with more weak north-northeast windswell, but the energy is still unimpressive.

Then things start to shift around the 26th and 27th. Saturday the 26th brings a bit more size – 1.2m – but it’s riddled with cross-off winds and moderate energy. The standout window is Sunday the 27th into Monday the 28th. Sunday morning is cross-shore and sketchy with a risk of thunderstorms, but the afternoon cleans up with a light offshore and 1.4m from the northeast at 8 seconds. That’s when you want to be out there.

The real gem is Monday the 28th afternoon. We’ve got a 1.1m northwest swell bumping into the 581 energy reading – that’s the strongest energy of the whole 16-day stretch – with a 14-second period and a gentle offshore breeze. That’s going to be the best session on offer, no doubt. It’s still only a couple of feet, but the quality and the push should make it fun on the reef.

There’s also a brief uptick on the 29th with some decent-energy northwest groundswell, but it’s a step down from Monday. Beyond that, the 30th and into the 1st of October, the swell direction swings back to the northeast with moderate energy, but by then we’re back to a metre or so of short-period slop.

Water temp is about average for this time of year, so nothing crazy there. Just don’t expect any magic for a while – but that stretch on Sunday the 27th afternoon through Monday the 28th is your best bet.

Rusty

Short Range Forecast

Mostly dry. Warm (max 29°C on Wed morning, min 26°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the NE by Wed afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 29°C on Sat morning, min 25°C on Sun night). Wind will be generally light.

Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
1
0
1
1
1
1
1
1
1
0
1
1
0
1
0
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SW
19
0.7
NE
7
0.9
NE
7
1.1
NE
6
1.3
NNE
7
1.2
NE
7
1.1
NE
7
0.9
NNE
7
1.1
NE
7
0.9
NE
7
0.7
NNE
6
0.9
NE
7
0.8
NE
6
0.8
SSW
16
0.5
SW
15
0.3
SW
15
1
NE
6
1
NE
6
0.2
W
13
Wave Graph
Metric surfscale
Energy kJ
535
47
65
104
160
151
112
78
99
77
34
77
47
0
104
33
75
74
13
Wind (km/h)
10
ENE
15
NE
30
NE
20
NE
25
NE
20
ENE
15
ENE
15
ENE
20
ENE
10
E
10
ENE
20
ENE
10
ENE
15
ENE
20
ENE
20
E
15
ENE
20
ENE
15
ENE
Wind State
off
off
cross-off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
High Tide
8:19AM0.54m
6:52PM0.22m
9:30AM0.53m
7:45PM0.18m
10:47AM0.54m
11:21PM0.18m
11:54AM0.55m
00:39AM0.20m
12:46PM0.58m
1:19AM0.24m
1:26PM0.59m
1:52AM0.29m
Low Tide
00:25AM0.11m
4:24PM0.24m
00:56AM0.13m
7:32PM0.21m
1:44AM0.16m
7:41PM0.18m
3:14AM0.18m
8:01PM0.16m
8:19PM0.15m
6:05AM0.16m
8:35PM0.13m
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:20
6:20
6:20
6:20
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:36
6:35
6:34
6:32
6:31
6:30
6:30
 mm
Temp °C
27
29
29
26
27
28
26
29
29
26
29
29
26
29
29
26
28
29
27
Feels °C
31
31
29
26
28
28
27
30
29
27
30
29
27
29
28
27
29
28
29
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  • 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 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 16 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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