Surf Forecasts:
Rat Beach surf forecast from 13 Sep 2026:
- Best quality surf: Monday 14 Sep, 2AM (local time) - 4.5ft (1.3m), 8s period, W swell with offshore winds.
- Most powerful swell: Saturday 19 Sep, 2PM (local time) - 2ft (0.6m), 18s period, SW swell with 252 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 5AM (local time) - 1.5ft (0.5m), 14s 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 Sunday (Sep 13) at 5AM. The primary swell is predicted to be 0.5m and 14s period with a secondary swell of 0.9m and 6s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Rat Beach in the next 16 days are 0.6m 18s and forecast to arrive on Saturday (Sep 19) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 17s period and expected on Wednesday (Sep 16) at 11AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sun 13th Sep) | 1.5ft (0.5m) 14s |
| Best Surf | 2AM (Mon 14th Sep) | 4.5ft (1.3m) 8s |
| Most Powerful | 2PM (Sat 19th Sep) | 2ft (0.6m) 18s |
Table - best surf conditions forecast for Rat Beach over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break down what Rat Beach is looking like for the next couple weeks. It’s a slow start, so don’t rush.
From Sunday the 13th through Saturday the 19th of September, it’s mostly small and weak. The combined swell energy stays weak to moderate (38 to 284), and wave heights are tiny, peaking around 2ft. The only half-decent window is Monday morning the 14th, with clean 2ft west swell under a moderate offshore breeze, but that’s still small for this reef. Water temp is nothing special, about average.
The real standout pops up on Sunday the 20th of September. That Sunday morning looks clean, with 2ft of south-west swell and light offshore wind. Energy hits 313 (moderate). But the absolute best is Monday the 21st of September, morning. You get a 2ft south-west groundswell with a 17-second period—proper long period, so it’ll have shape and punch. Clean offshore breeze, combined energy 337 (moderate). This is the session. Rat Beach is a reef, so that long-period swell will work well. It can be inconsistent and you might have company, but it’s worth it.
From Tuesday the 22nd onward, it’s a long, flat fade. Combined energy drops (18 to 194), winds turn cross-shore, and waves shrink. Saturday the 26th is especially dead, with 1ft and energy at just 12 (weak). Not much to say after that.
Bottom line: first week is a bust. Monday morning the 21st of September is your best shot. After that, it’s time to find something else to do.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sun afternoon, min 20°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Fri afternoon, min 19°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 19 | W 7 | W 8 | SW 18 | SW 18 | SW 17 | SW 16 | W 9 | SW 16 | WSW 6 | SW 15 | SW 14 | SW 21 | SW 14 | W 5 | SW 19 | SW 19 | SW 19 |
Wave Graph  | |||||||||||||||||||
 kJ | 96 | 63 | 21 | 212 | 51 | 108 | 106 | 90 | 39 | 39 | 10 | 37 | 33 | 71 | 32 | 13 | 184 | 184 | 131 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-on | off | off | cross-off | off | off | cross-off | off | cross-off | cross-on | cross | cross | cross-on | cross | cross | cross-on | glassy |
High Tide | 10:56PM1.86m | 11:06AM2.08m | 11:41PM1.67m | 11:34AM2.05m | 00:31AM1.48m | 12:04PM1.98m | 1:39AM1.31m | 12:38PM1.89m | 4:30AM1.23m | 1:26PM1.80m | 2:47PM1.73m | ||||||||
Low Tide | 4:50AM0.63m | 5:38PM0.51m | 5:14AM0.81m | 6:26PM0.56m | 5:34AM0.98m | 7:22PM0.64m | 5:47AM1.12m | 8:36PM0.71m | 10:17PM0.72m | 11:43PM0.65m | |||||||||
 |  | | | | |  |  | | | | | | | | | | | | |
 | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — |
 | — | — | 7:01 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:54 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 23 | 22 | 22 | 22 | 21 | 21 | 21 | 20 | 20 | 21 | 20 | 20 | 20 | 20 | 21 | 22 | 22 |
Feels °C | 22 | 23 | 23 | 22 | 21 | 22 | 23 | 21 | 20 | 21 | 21 | 21 | 20 | 21 | 19 | 20 | 22 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | W 6 | W 6 | W 7 | W 8 | W 7 | W 7 | W 6 | W 6 | W 9 | W 6 | SSW 17 | SSW 17 | S 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | W 6 |
| kJ | 47 | 37 | 21 | 212 | 51 | 32 | 20 | 18 | 39 | 11 | 200 | 101 | 132 | 144 | 74 | 121 | 184 | 184 | 47 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 13 | SW 13 | W 10 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | WSW 6 | SW 15 | SW 14 | SW 21 | S 12 | W 5 | W 5 | SSW 14 | SSW 13 |
| kJ | 96 | 63 | 45 | 44 | 31 | 108 | 106 | 90 | 64 | 39 | 10 | 37 | 33 | 71 | 44 | 13 | 14 | 61 | 59 |
Swell 3 Height (m) Direction Period (s) | WSW 12 | SW 19 | W 10 | SW 19 | SW 18 | W 10 | W 9 | W 9 | SSW 20 | SSW 19 | S 9 | WSW 5 | W 5 | S 12 | SW 14 | SW 21 | SSW 14 | S 11 | SW 19 |
| kJ | 15 | 58 | 17 | 57 | 48 | 29 | 14 | 15 | 75 | 35 | 7 | 6 | 5 | 26 | 32 | 110 | 69 | 9 | 131 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SE 2 | — | — | SE 3 | — | — | — | — | — | — | W 2 | — | — | W 6 | — |
| kJ | — | — | — | — | 1 | — | — | 1 | — | — | — | — | — | — | 2 | — | — | 21 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 63 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 118 | 13 | 166 | 63 | 6 | 149 | 118 | 0 |
Best forecast wave conditions in Los Angeles County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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