Surf Forecasts:
Rat Beach surf forecast from 16 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 2AM (local time) - 3ft (0.9m), 6s period, W swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 8AM (local time) - 1.5ft (0.4m), 19s period, SW swell with 131 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 2AM (local time) - 3ft (0.9m), 6s period with W 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 Tuesday (Aug 18) at 2AM. The primary swell is predicted to be 0.9m and 6s period. 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 0.4m 19s and forecast to arrive on Sunday (Aug 23) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 15s period and expected on Sunday (Aug 16) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 18th Aug) | 3ft (0.9m) 6s |
| Best Surf | 2AM (Tue 18th Aug) | 3ft (0.9m) 6s |
| Most Powerful | 8AM (Sun 23rd Aug) | 1.5ft (0.4m) 19s |
Table - best surf conditions forecast for Rat Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on offer in feet, miles per hour, and Fahrenheit.
Honestly, this is a tough stretch. We are looking at a long dry spell ahead. The first real chance to even think about paddling out doesn’t show up until Thursday the 20th of August, and even then, it’s barely a whisper of swell. Before that, it’s all small, weak, and choppy — not worth your time.
For Thursday the 20th of August, Rat Beach (a reef setup) might see a tiny pulse of long-period groundswell. We’re talking a 1-foot wave from the SW with a period stretching out to 19 seconds. The early morning looks best with light, clean cross-offshore winds at 5 mph. The energy is weak (71), so don’t expect much push. That crazy-long period might make it a bit fat and straight at this beach break, but the clean conditions are a silver lining.
The whole run from Friday the 21st through to Sunday the 24th of August is more of the same — tiny 1-foot waves. The mornings on the 21st, 22nd, and 24th offer clean conditions, but the swell is so minimal it’s really only going to be knee-high dribblers. The water temp on the opening morning (Sunday the 16th) was noted at 71°F, which is reported as *much warmer than normal* for this time of year — a nice change if you’re just having a dip.
Things try to build a little around the 27th of August. On Thursday the 27th morning, the swell picks up to 4 feet from the W with a short 7-second period. The combined energy hits a moderate 305, but the problem is the wind is a light cross-onshore at 10 mph. That spells choppy, bumpy faces. It might offer a few rideable walls, but don't expect any sort of quality.
The very end of the window, into Monday the 31st of August, gives us another small glimmer. The Monday morning shows 3-foot waves from the W, clean with a light cross-offshore breeze at 10 mph and moderate energy (102). Still not firing, but it’s the most surfable-looking day in a sea of flatness.
The bottom line: there’s no standout day in this 16-day window. It’s a long, quiet period for Rat Beach. The consistent inconsistency of this spot is showing its true colours here. Better luck next time.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Tue afternoon, min 18°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Fri afternoon, min 21°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
AM | PM | 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) | W 5 | W 3 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 5 | SW 19 | W 5 | W 12 | SW 18 | SW 18 | SW 17 | SW 18 | SW 18 | SW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 8 | 38 | 33 | 44 | 65 | 38 | 16 | 35 | 24 | 35 | 13 | 56 | 14 | 11 | 50 | 49 | 47 | 50 | 50 | 58 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross-off | cross-off | cross-on | glassy | cross-off | cross-on | glassy | cross-off | cross | off | cross-off | cross | glassy | cross-off | cross-on | off |
High Tide | 12:36PM1.95m | 00:45AM1.59m | 1:12PM1.93m | 1:49AM1.36m | 1:53PM1.88m | 3:42AM1.21m | 2:45PM1.83m | 3:57PM1.81m | 8:34AM1.36m | 5:14PM1.84m | 8:37AM1.43m | 6:15PM1.92m | |||||||||
Low Tide | 6:58PM0.76m | 6:35AM0.78m | 8:04PM0.79m | 6:57AM0.97m | 9:30PM0.80m | 7:13AM1.13m | 11:10PM0.74m | 00:27AM0.64m | 10:14AM1.35m | 1:18AM0.53m | 12:01PM1.32m | 1:56AM0.42m | |||||||||
 | |  | | | | | | | | | | | | | | |  | |  |  | |
 | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — |
 | — | 7:37 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 19 | 20 | 21 | 21 | 22 | 22 | 22 | 23 | 22 | 22 | 23 | 22 | 23 | 23 | 22 | 23 | 24 | 23 | 24 | 24 | 23 |
Feels °C | 20 | 19 | 19 | 22 | 21 | 21 | 23 | 23 | 22 | 23 | 23 | 23 | 24 | 24 | 23 | 24 | 24 | 24 | 25 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SW 15 | SW 14 | W 6 | SSW 14 | W 6 | W 6 | SSW 13 | W 6 | SSW 15 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | W 6 | SSW 12 | SSW 14 |
| kJ | 310 | 217 | 214 | 33 | 186 | 65 | 38 | 70 | 35 | 209 | 217 | 123 | 118 | 118 | 115 | 69 | 68 | 68 | 10 | 31 | 120 |
Swell 2 Height (m) Direction Period (s) | W 5 | S 10 | S 10 | SSW 14 | SSW 18 | SSW 14 | SSW 16 | SSW 17 | SSW 15 | W 6 | W 6 | W 5 | W 6 | SW 19 | WSW 5 | W 6 | SW 18 | W 6 | SW 13 | SSW 15 | W 10 |
| kJ | 8 | 9 | 2 | 186 | 32 | 180 | 146 | 109 | 142 | 24 | 15 | 13 | 15 | 14 | 7 | 9 | 49 | 5 | 42 | 42 | 17 |
Swell 3 Height (m) Direction Period (s) | S 10 | W 10 | W 10 | S 10 | W 10 | S 10 | SW 13 | W 8 | SW 19 | SW 20 | W 14 | SW 18 | SW 19 | W 12 | W 12 | SW 18 | S 16 | SW 17 | SW 18 | SW 18 | SW 19 |
| kJ | 9 | 2 | 2 | 2 | 2 | 2 | 42 | 12 | 15 | 16 | 4 | 13 | 56 | 3 | 11 | 50 | 21 | 47 | 50 | 50 | 58 |
Wind waves Height (m) Direction Period (s) | — | W 3 | W 6 | — | W 6 | — | — | W 6 | — | — | W 6 | — | — | W 5 | — | — | W 5 | — | — | W 5 | — |
| kJ | — | 8 | 38 | — | 44 | — | — | 16 | — | — | 35 | — | — | 13 | — | — | 5 | — | — | 5 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 166 | 118 | 6 | 63 | 118 | 0 | 0 | 41 | 0 | 1 | 55 | 0 | 0 | 63 | 0 | 0 | 55 | 0 | 0 | 55 | 0 |
Best forecast wave conditions in Los Angeles County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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