Rat Beach Surf Break

Lat Long: 33.81° N 118.40° W

Rat Beach Surf Forecast and Surf Report

Issued: 4 am 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Rat Beach sea temperature is
21.9° C
3.1° 

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


Rat Beach surf forecast from 12 Aug 2026:

  • Best quality surf: Thursday 13 Aug, 2AM (local time) - 1.5ft (0.5m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 13 Aug, 8PM (local time) - 2ft (0.6m), 16s period, SW swell with 193 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 2AM (local time) - 1.5ft (0.5m), 16s period with SW swell.

Best Forecast Surf Conditions for Rat Beach this week:

The surf forecast for Rat Beach 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 0.5m and 16s period with a secondary swell of 0.3m and 11s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Rat Beach in the next 16 days are 0.6m 16s and forecast to arrive on Thursday (Aug 13) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 17s period and expected on Saturday (Aug 15) at 5AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Thu 13th Aug)1.5ft (0.5m) 16s
Best Surf 2AM (Thu 13th Aug)1.5ft (0.5m) 16s
Most Powerful 8PM (Thu 13th Aug)2ft (0.6m) 16s

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


The Lowdown

Alright, Rusty here. Let's get into it.

Well, well, well. Lookin' at the next 16 days, I gotta be straight with you – it's a lean stretch for Rat Beach. There's no real swell pulse to get excited about. The best we've got are a few mornings that clean up nicely, but the waves themselves are just tiny. The first few days are a write-off with poor conditions and choppy onshores. We do have a bit of a gap in the middle where the wind turns offshore, and the last couple of days of the 16-day window show a tiny bit more energy, but it's nothing to write home about. The wait is on for something better.

The water is sitting at a balmy 71°, which is a whopping 6° warmer than usual for this time of year. That's very unusual, so you'll be in boardies for sure.

For the first week, it's a grind. Wednesday morning the 12th has a 2 ft SW swell, but with a messy cross-shore wind, it's a no-go. Thursday morning the 13th is the first to show a bit of promise: a 2 ft SW swell with a cross-off light breeze, making for clean, tiny waves. The combined energy is weak (130). It's surfable but very ordinary. Saturday morning the 15th and Sunday the 16th are similar – clean with a 2 ft wind swell from the W, but again, it's just knee-high dribble.

The real standout, such as it is, lands on Thursday morning, the 20th of August. The swell bumps up to 4 ft from the west, with a 9 mph offshore wind from the southeast. That's a clean, lined-up wave. The combined energy jumps to a moderate 209, so there's a bit more push. The trouble is, the period is a short 6 seconds, so it's a bit of a sloppy wind swell, not a proper groundswell. Still, with offshore winds, it's the best on offer.

Then we get a few more clean mornings, but the swell drops right back. Saturday the 22nd and Sunday the 23rd are clean again but with barely a ripple. A long-period 18-second swell rolls in on the 21st, but it's only 1.0 ft – more of a long period cross-up than a rideable wave. Finally, the last morning of the forecast, Thursday the 27th of August, shows a 2 ft SW swell with a 14-second period and a clean cross-off breeze. The combined energy is a solid 319 (moderate), which is the highest in the entire 16-day run. This is the other standout. It's a long-period groundswell that will wrap in nicely, but at 2 ft, it's still small. For a reef setup like Rat Beach, the long period will make it wall up nicely, but the sets will be very spaced out. It's a promising but uncertain call for that far out.

Given the tiny size and the constant onshore chop in the afternoons for most of the period, the setup looks more interesting for kite surfing than paddle surfing on most days.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Wed afternoon, min 19°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Mon night, min 19°C on Sat morning). Wind will be generally light.

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
SW
17
0.5
SW
16
0.5
SW
16
0.5
SW
16
0.5
SW
16
0.6
SW
15
0.5
SW
15
0.4
W
3
0.6
W
4
0.5
W
5
0.6
W
5
0.8
W
6
0.5
W
5
0.6
W
5
0.8
W
5
0.7
W
6
1
W
5
1.2
W
6
0.8
W
6
0.7
W
6
0.8
W
6
Wave Graph
Metric surfscale
Energy kJ
143
127
125
124
121
188
104
2
14
11
17
38
13
16
35
29
45
115
48
31
48
Wind (km/h)
10
SW
15
WSW
10
SSW
10
SSW
15
WSW
5
SSW
10
SW
20
WSW
10
WSW
10
SSW
20
WSW
10
SW
10
SSW
20
WSW
15
WSW
10
WSW
25
W
10
W
10
WSW
25
W
10
SE
Wind State
cross
cross-on
cross-off
cross-off
cross
cross-off
cross
cross-on
cross-on
cross-off
cross-on
cross
cross-off
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
off
High Tide
10:23AM1.78m
9:39PM2.43m
10:56AM1.85m
10:24PM2.29m
11:29AM1.91m
11:09PM2.08m
12:03PM1.95m
11:55PM1.84m
12:36PM1.95m
00:45AM1.59m
1:12PM1.93m
1:49AM1.36m
1:53PM1.88m
3:42AM1.21m
Low Tide
3:30PM0.84m
4:34AM0.03m
4:20PM0.77m
5:07AM0.17m
5:09PM0.73m
5:39AM0.36m
6:01PM0.73m
6:08AM0.57m
6:58PM0.76m
6:35AM0.78m
8:04PM0.79m
6:57AM0.97m
9:30PM0.80m
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:15
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:43
7:42
7:40
7:38
7:37
7:37
7:36
 mm
Temp °C
20
21
20
19
20
19
20
20
19
20
21
20
20
21
20
21
22
23
22
23
24
Feels °C
22
20
20
20
19
19
20
19
18
21
20
19
20
20
18
21
20
20
22
22
23
  • 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 Rat Beach Surf forecast

The above surf forecast table for Rat Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rat Beach can be found by selecting the local surf guide option on the grey menu. Our Rat Beach 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 (Rat Beach) 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 Rat Beach 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.

Rat Shit is 5 km (3 miles) from Redondo Beach. If you plan a vacation in Los Angeles County, look for hotels and other accommodation in Redondo Beach. Redondo Beach has rooms for a wide range of budgets as well as car hire and transport links.

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