Ranches Surf Break

Lat Long: 21.50° N 158.23° W

Ranches Surf Forecast and Surf Report

Issued: 7 pm 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Ranches sea temperature is
26.9° C
0.2° 

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


Ranches surf forecast from 13 Aug 2026:

  • Best quality surf: Thursday 13 Aug, 2AM (local time) - 2.5ft (0.8m), 6s period, NE swell with offshore winds.
  • Most powerful swell: Saturday 15 Aug, 5AM (local time) - 5ft (1.6m), 7s period, NE swell with 247 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 2AM (local time) - 2.5ft (0.8m), 6s period with NE 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 Thursday (Aug 13) at 2AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.3m and 12s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Ranches in the next 16 days are 1.6m 7s and forecast to arrive on Saturday (Aug 15) at 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 6s period and expected on Saturday (Aug 15) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Thu 13th Aug)2.5ft (0.8m) 6s
Best Surf 2AM (Thu 13th Aug)2.5ft (0.8m) 6s
Most Powerful 5AM (Sat 15th Aug)5ft (1.6m) 7s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what Ranches has got cookin’ for us over the next couple of weeks. Gotta be straight with you, it’s a real mixed bag, and we’re looking at a whole lot of nothing for a good stretch.

We kick things off on Wednesday the 12th of August, but don’t get your hopes up. There’s barely a pulse in the water – a tiny 1.0ft swell from the WNW with a period of 12 seconds. The energy is a weak 28, and the conditions are labelled as poor. The wind is offshore from the NE at 15 mph, but with a wave that small, it’s just a clean, flat lake. Not worth paddling out for.

Thursday the 13th is more of the same – tiny 1.0ft and 0.7ft leftovers. Nothing doing.

The Standout Window

Now, mark your calendar for Friday the 14th of August. It’s not going to blow your mind, but it’s the best we’ve got. We see a bump in swell to 4ft from the NE with a short, weak period of only 7 seconds. The combined energy is a moderate 108 to 119. The conditions are described as “surfable waves but very ordinary,” but the wind is offshore from the ENE at 12-15 mph, keeping the surface clean. It’s a beginner-to-intermediate kind of day, small and a bit weak, but you’ll get wet.

Then it falls apart again. Saturday the 15th sees the swell vanish back to 1.0ft with strong winds. Sunday the 16th afternoon brings a pulse of 5ft swell from the NE (8 second period), and the energy jumps right up to a strong 265. The forecast says “expect good surf conditions” and the wind is offshore from the E at 15 mph. This is probably the biggest, most powerful wave in the whole forecast, but it’s still not a classic Ranches day. The swell direction is from the NE, which is not the optimum NW direction that this reef really needs to fire.

Monday the 17th has a drop to 3ft from the NE with weak period (7 seconds). The rest of the week into the end of August is a total bust. We have days of 1.0ft, 2ft, and 2ft swells from various directions, but the energy is consistently low (mostly under 100). The water temp at the start is 80°, which is basically normal for this time of year, so that’s one nice thing at least.

To be honest, looking at the whole 16-day run, there's a huge gap of days with truly poor or no surf. If you’re desperate, Friday the 14th and Sunday the 16th are the only times with enough size to bother. For a spot like Ranches, which is a reef break known for needing a solid NW swell to really work, this is a quiet period.

Rusty, signing off.

Short Range Forecast

Mostly dry. Warm (max 29°C on Thu morning, min 25°C on Wed night). Winds increasing (light winds from the ENE on Wed night, fresh winds from the ENE by Sat afternoon).

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Sun night. Warm (max 28°C on Mon afternoon, min 25°C on Mon night). Winds decreasing (fresh winds from the ENE on Sun morning, light winds from the ENE by Tue afternoon).

Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
1
1
1
1
0
0
0
0
0
0
1
1
1
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
NE
6
0.3
W
12
0.2
W
12
0.9
NE
7
1.1
NE
6
1.1
NE
6
1.4
NE
7
0.3
W
11
0.3
NNW
8
1.9
ENE
8
1.2
SSE
12
1.3
ENE
8
0.3
WNW
11
1
NE
7
0.8
NE
7
0.8
NE
6
0.8
NE
6
0.7
NE
6
0.3
WNW
12
Wave Graph
Metric surfscale
Energy kJ
46
25
11
73
106
106
168
22
12
0
0
0
24
93
65
46
46
36
28
Wind (km/h)
15
ENE
20
NE
30
NE
15
ENE
20
ENE
25
NE
25
ENE
30
ENE
35
ENE
30
ENE
35
ENE
30
ENE
20
E
20
E
15
ENE
10
E
10
E
10
ENE
10
E
Wind State
off
off
off
off
off
off
off
off
off
off
off
off
cross-off
off
off
cross-off
off
off
off
High Tide
4:50AM0.33m
5:08PM0.66m
5:37AM0.37m
5:42PM0.59m
6:26AM0.41m
6:14PM0.50m
7:17AM0.44m
6:44PM0.42m
8:14AM0.46m
7:12PM0.34m
9:19AM0.48m
7:36PM0.27m
Low Tide
11:26PM0.04m
10:16AM0.03m
11:54PM0.04m
11:07AM0.08m
00:21AM0.04m
12:01PM0.14m
00:48AM0.05m
1:01PM0.20m
1:16AM0.06m
2:17PM0.25m
1:45AM0.08m
4:14PM0.27m
2:19AM0.10m
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
thunderstorm
rain showers
rain showers
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:11
6:11
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:04
7:04
7:02
7:01
7:00
7:00
 mm
5
1
2
Temp °C
26
29
28
26
28
28
26
27
28
26
26
26
26
26
28
26
26
28
26
Feels °C
26
28
26
26
27
26
26
26
26
25
25
24
24
27
30
27
28
29
27
  • Map Icons:
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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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