Ranches Surf Break

Lat Long: 21.50° N 158.23° W

Ranches Surf Forecast and Surf Report

Issued: 1 pm 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Ranches sea temperature is
27.0° C
0.4° 

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


Ranches surf forecast from 11 Aug 2026:

  • Best quality surf: Monday 10 Aug, 8PM (local time) - 2ft (0.6m), 7s period, NE swell with offshore winds.
  • Most powerful swell: Sunday 16 Aug, 5PM (local time) - 15ft (4.5m), 9s period, NE swell with 3,361 kJ wave energy.
  • Next surfable swell (1★+): Monday 10 Aug, 8PM (local time) - 2ft (0.6m), 7s 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 Monday (Aug 10) at 8PM. The primary swell is predicted to be 0.6m and 7s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Ranches in the next 16 days are 4.5m 9s and forecast to arrive on Sunday (Aug 16) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Monday (Aug 17) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Mon 10th Aug)2ft (0.6m) 7s
Best Surf 8PM (Mon 10th Aug)2ft (0.6m) 7s
Most Powerful 5PM (Sun 16th Aug)15ft (4.5m) 9s

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's on the cards for the next couple of weeks.

We're starting off with a bit of a slow one, to be honest. The first decent surfable day is Monday, August 10th, at Ranches (reef). It's a pretty mellow start with a small 2ft NE swell and a short period of 7 seconds. The good news is the wind is light offshore from the ENE, so it should be clean even if it's not pumping. The combined energy is weak at (66), so don't expect much push. Water temperature is 81°, which is bang on average for this time of year.

After that, we hit a real flat spell. Tuesday the 11th through Thursday the 13th is pretty much a write-off for any worthwhile waves - you're looking at zeros across the board for surfable conditions.

Things start to look a little more interesting from Friday, August 14th, onwards. We see a consistent NE swell settling in, around 4ft to 4ft on Friday and Saturday, but the wind gets up, too. Friday morning and afternoon have moderate- to fresh-offshore NE winds, keeping things clean. The swell period is a bit short at 7 seconds, so it won't be the most powerful. The combined energy on Friday afternoon is a moderate (113), and by Saturday morning it climbs to (158). It's not a standout, but it’s better than nothing.

Saturday afternoon, August 15th, the wind shifts cross-off and picks up to 22 mph, which takes the shine off a bit. Still, that 5ft NE swell offers the best chance of a wave that weekend.

Now, for the brave souls, hold on to your hats. Sunday, August 16th, a serious pulse arrives from the NNE. We're talking 10ft of swell on Sunday morning, combined energy of (1261)! That’s a lot of water moving. But, and it's a big but, the wind will be howling from the SE at 43 mph, making it a gale-force cross-off. This is expert-only territory, and at that size and wind, you might be better off looking at it from the beach or bringing a kite. By Sunday afternoon, it gets even bigger with 15ft NE swell and energy at (3388), but with strong cross-shore winds and messy cross-chop, it's going to be a washing machine. Only experts should even consider this spot on August 16th.

Things settle down after that wild Sunday. Monday the 17th drops back to under 3ft, and the wind stays onshore, so it won't be pretty.

As we get into the second week, from about Wednesday, August 19th, things get more consistent but smaller. We see some clean, offshore conditions with small 2ft SW swells rolling in. The period on that Wednesday is a long 16 seconds, which is a proper groundswell. That long period will make it more powerful than the height suggests, with combined energy of (162) on Wednesday afternoon. For a reef break like Ranches, that combination of tiny size and long period can sometimes produce a surprisingly fun, tidy little wave if you're on the right board.

Thursday the 20th through to the end of the forecast on Tuesday the 25th stays in the 1ft to 2ft range. The best days in that run look to be Friday the 21st through Sunday the 23rd, with a clean NW swell and glassy to light-offshore winds. It’s small, but it'll be consistent and clean. The overall standout for the whole period? Honestly, if you want a proper wave and not just a clean bump, your best bet is Friday, August 14th through Saturday, August 15th—it won't be perfect, but it will be the biggest surfable swell with clean offshore winds. The Sunday 16th monster is just too dangerous with the wind.

Keep your expectations in check, and pick your days.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Heavy rain (total 36mm), heaviest during Sat night. Warm (max 28°C on Thu afternoon, min 25°C on Thu night). Winds increasing (light winds from the ENE on Thu night, gales from the SE by Sun morning).

Mon
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
PM
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
0
0
0
0
1
0
0
1
1
0
1
0
0
0
0
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)
0.6
NE
7
0.7
SSW
15
0.7
SSW
15
0.8
SSW
14
0.7
S
20
0.9
S
18
0.6
N
12
0.8
NE
6
0.3
W
12
0.2
W
12
1
NE
6
1.1
NE
7
1.1
NE
7
1.1
NE
7
1.3
NE
7
1.4
NE
7
1.9
NNE
7
3
NNE
8
4.5
NE
9
0.9
NNE
8
Wave Graph
Metric surfscale
Energy kJ
42
0
0
0
0
0
102
45
25
11
75
97
102
113
144
183
362
1261
3361
92
Wind (km/h)
15
ENE
15
ENE
0
NNW
15
NE
15
ENE
10
ENE
25
NE
10
ENE
20
NE
25
NE
20
ENE
25
NE
25
NE
20
NE
30
NE
35
NE
50
N
70
SE
40
SSE
20
SE
Wind State
off
off
glassy
cross-off
off
off
off
off
off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross
cross-off
High Tide
3:14PM0.77m
3:15AM0.23m
3:55PM0.76m
4:03AM0.28m
4:33PM0.72m
4:50AM0.33m
5:08PM0.66m
5:37AM0.37m
5:42PM0.59m
6:26AM0.41m
6:14PM0.50m
7:17AM0.44m
6:44PM0.42m
Low Tide
10:28PM0.06m
8:33AM-0.02m
10:58PM0.05m
9:26AM-0.00m
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
part cloud
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
heavy rain
thunderstorm
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:09
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:06
7:05
7:04
7:04
7:02
7:01
 mm
24
12
34
Temp °C
29
26
28
29
26
27
28
26
28
28
26
27
28
25
27
27
26
27
27
26
Feels °C
30
27
31
30
26
29
27
26
27
26
27
25
27
24
25
25
24
27
25
26
  • 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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