
Surf Forecasts:
Japs Cove surf forecast from 15 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 1.5ft (0.5m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Monday 21 Sep, 11AM (local time) - 2.5ft (0.8m), 17s period, SW swell with 338 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 5AM (local time) - 1.5ft (0.5m), 16s period with SSW swell.
Best Forecast Surf Conditions for Japs Cove this week:
The surf forecast for Japs Cove over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 17) at 5AM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.4m and 14s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Japs Cove in the next 16 days are 0.8m 17s and forecast to arrive on Monday (Sep 21) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 17th Sep) | 1.5ft (0.5m) 16s |
| Best Surf | 5AM (Thu 17th Sep) | 1.5ft (0.5m) 16s |
| Most Powerful | 11AM (Mon 21st Sep) | 2.5ft (0.8m) 17s |
Table - best surf conditions forecast for Japs Cove over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what we've got on the cards for the next couple of weeks. To be honest, it's a pretty quiet run ahead, so we need to be realistic about what's on offer.
The first window with anything rideable doesn't arrive until Saturday the 19th, so we're looking at a solid 4-day gap with just flat, poor conditions. That Saturday morning is the one tiny glimmer we get. Japs Cove wakes up with a clean 2ft SW groundswell. The period is a chunky 18 seconds, which is proper long-period ground energy, and gives it some real push for such a small height. The water is sitting at 73°, which is much warmer than normal for this time of year – a solid 7° anomaly, so you can leave the thick wetsuit at home. The absolute standout on Saturday morning is the wind. It’s glassy. Dead flat, offshore breeze from the SSW at just 3 mph. For a sheltered reef like Japs Cove, that’s as good as it gets. The combined energy is moderate (280), but with those conditions, each set will have a clean little shape. It's small, sure, but with that period, it'll be lined up and worth a paddle.
Now, the rest of the outlook stays stubborn. From Saturday afternoon right through to the end of the month on September 30th, it's a constant battle with onshore and cross-onshore winds. Most of the time it's a moderate breeze from the W or WSW at 9 to 12 mph, but it picks up to 16 and even 19 mph later in the second week. That breeze is ruining the structure of the swell. The waves themselves hover around 1ft to 3ft from the SW, with periods dropping from the nice 18 seconds down to a less exciting 12–14 seconds by the end. The combined energy figures creep up into the (300–400) range on some days, showing there’s actually a bit of water moving, but the wind keeps it a chop-fest. There's nothing to get excited about here. It's just poor surf conditions day after day.
To be clear, the only morning that has my attention is Saturday September 19th at Japs Cove. It's a reef break best for advanced surfers, and it is *inconsistent*, so don't expect non-stop action, but when a set comes through on that glassy morning with the 18-second groundswell, it'll be the best wave we see in this whole 16-day stretch. After that, it's a waiting game. Rig up something else for the rest of the time.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Tue afternoon, min 19°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun afternoon, min 19°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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) | SW 16 | SW 16 | SW 16 | SSW 17 | SSW 17 | S 16 | SSW 16 | SW 21 | SSW 15 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 16 |
Wave Graph | |||||||||||||||||||||
90 | 88 | 39 | 200 | 59 | 132 | 144 | 74 | 167 | 184 | 184 | 131 | 199 | 252 | 199 | 252 | 252 | 241 | 338 | 334 | 318 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross-on | on | on | cross-on | glassy | on | cross-on | glassy | glassy | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 12:02PM1.98m | 1:37AM1.31m | 12:37PM1.89m | 4:36AM1.23m | 1:24PM1.80m | 2:45PM1.73m | 8:20AM1.44m | 4:28PM1.73m | 8:02AM1.50m | 5:41PM1.80m | 8:09AM1.56m | 6:32PM1.89m | |||||||||
Low Tide | 7:20PM0.64m | 5:45AM1.12m | 8:35PM0.71m | 10:16PM0.72m | 11:43PM0.65m | 10:15AM1.43m | 00:36AM0.56m | 11:58AM1.34m | 1:13AM0.48m | 12:46PM1.23m | 1:42AM0.42m | ||||||||||
6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:39 | — | — | 6:39 | — | — | |
— | 7:00 | — | — | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:53 | — | — | 6:52 | — | — | 6:51 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 21 | 19 | 19 | 20 | 19 | 19 | 20 | 20 | 20 | 21 | 20 | 20 | 21 | 21 | 21 | 22 | 21 | 20 | 21 | 20 |
Feels °C | 20 | 21 | 19 | 19 | 19 | 19 | 20 | 19 | 20 | 21 | 20 | 19 | 21 | 21 | 21 | 22 | 22 | 21 | 20 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | W 6 | WSW 6 | W 8 | SSW 17 | SSW 17 | S 16 | SSW 16 | SSW 15 | SSW 15 | W 5 | SW 19 | W 6 | W 6 | SW 18 | W 6 | W 6 | W 6 | W 6 | SW 17 | SW 17 | SW 16 |
18 | 11 | 20 | 200 | 59 | 132 | 144 | 74 | 167 | 14 | 184 | 31 | 23 | 252 | 63 | 50 | 38 | 67 | 338 | 334 | 318 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | WSW 5 | SW 15 | SW 14 | SW 21 | SW 14 | W 5 | SW 19 | SSW 14 | SSW 13 | SW 18 | SSW 13 | SW 18 | SW 18 | SW 18 | SW 17 | W 6 | W 6 | WSW 5 |
90 | 88 | 39 | 6 | 37 | 33 | 71 | 32 | 13 | 184 | 61 | 59 | 199 | 33 | 199 | 252 | 252 | 241 | 36 | 17 | 9 | |
Swell 3 Height (m) Direction Period (s) | W 9 | SSW 20 | SSW 19 | S 9 | W 5 | W 5 | WSW 14 | SW 21 | SW 21 | SSW 14 | S 11 | SW 19 | SSW 13 | SW 21 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 |
6 | 75 | 35 | 7 | 5 | 4 | 20 | 72 | 110 | 69 | 9 | 131 | 58 | 18 | 29 | 28 | 29 | 30 | 28 | 27 | 26 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 2 | — | — | W 5 | — | — | W 6 | — | — | W 7 | — | — | — | — |
— | — | — | — | — | — | — | 1 | — | — | 13 | — | — | 23 | — | — | 89 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 11 | 202 | 11 | 11 | 156 | 11 | 11 | 51 | 0 | 11 | 51 | 0 | 0 | 51 | 11 | 10 | 64 | 11 | 9 | 77 | 11 |
Best forecast wave conditions in Los Angeles County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Japs Cove Surf forecast
The above surf forecast table for Japs Cove provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Japs Cove can be found by selecting the local surf guide option on the grey menu. Our Japs Cove 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 (Japs Cove) 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 Japs Cove 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.
Japs Cove is 5 km (3 miles) from Rancho Palos Verdes. If you plan a vacation in Los Angeles County, look for hotels and other accommodation in Rancho Palos Verdes. Rancho Palos Verdes has rooms for a wide range of budgets as well as car hire and transport links.










