Surf Forecasts:
Cape Mendocino surf forecast from 28 Aug 2026:
- Best quality surf: Thursday 3 Sep, 11PM (local time) - 10ft (3.0m), 12s period, NW swell with cross-offshore winds.
- Most powerful swell: Thursday 3 Sep, 11PM (local time) - 10ft (3.0m), 12s period, NW swell with 2,185 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 2AM (local time) - 2.5ft (0.8m), 14s period with SSW swell.
Best Forecast Surf Conditions for Cape Mendocino this week:
The surf forecast for Cape Mendocino over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 01) at 2AM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 1.1m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cape Mendocino in the next 16 days are 3.0m 12s and forecast to arrive on Thursday (Sep 03) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Sunday (Aug 30) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 1st Sep) | 2.5ft (0.8m) 14s |
| Best Surf | 11PM (Thu 3rd Sep) | 10ft (3.0m) 12s |
| Most Powerful | 11PM (Thu 3rd Sep) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Cape Mendocino over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what Cape Mendocino has in store for us over the next couple of weeks.
Honestly, the start of this outlook is a bit of a slow grind. There’s a pretty big gap of days with nothing really worth paddling out for. We’re looking at from Friday the 28th of August all the way through until the end of the month, and even into the first few days of September, it’s mainly cross-shore winds and messy conditions. The swell is small, mostly around 2ft to 4ft, and the energy is weak to moderate, with combined energy readings mostly in the 500-900 range. The wind is relentless, and the water is sitting at 55° – a bit colder than normal for this time of year, so you’ll be wanting that extra rubber.
We get a little flicker of something on Monday the 31st of August with a light breeze and a 3ft cross-on swell, but it’s still marginal. Tuesday the 1st of September is similar. It’s not until Wednesday the 2nd that things feel a bit off again, with small swell and poor conditions.
Now, here’s where it gets interesting. The real standout, and the only one worth getting excited about, is Thursday the 3rd of September. We’ve got a solid pulse of swell coming in from the NW, pushing 7ft in the morning and bumping up to 8ft in the afternoon. This is backed by strong energy – the combined energy reading jumps to 1793 in the morning and a whopping 2482 in the afternoon. That’s moderate to strong wave energy. The period is 11 to 12 seconds, so it’s a proper groundswell. This is big, powerful stuff. For a spot like Cape Mendocino, which is an exposed break, this will be handling the full force. But heads up – with waves over 8ft, this is strictly for experienced surfers only. The wind is cross-shore from the N at 12 mph, which will keep it from being glassy, but it’s not trashed. The swell direction is NW, which is close to the optimum SW direction the spot likes, so it should wrap in reasonably well.
Friday the 4th of September still has some size, with 8ft to 7ft swells from the NW, but the wind is cross-on and the energy is dropping. It’s a solid option, but not the standout.
After that, we drop back down into the 3ft range over the weekend of the 5th and 6th of September, with cross-shore winds and marginal conditions. The energy is moderate. The rest of the second week, from the 7th of September onward, is a real letdown. The swell drops to 2ft-3ft, the wind picks up again, and the energy stays weak. There’s just nothing to get excited about.
So, to wrap it up: the first week is a write-off until Thursday the 3rd of September. That’s your one and only true standout – a big, powerful NW groundswell for the experts. The rest of the period is pretty lackluster. If you’re a beginner, you’re better off waiting for a different window.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Fri afternoon, min 12°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Wed morning, min 13°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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) | SSW 16 | SW 17 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | NW 10 | NW 10 | SSW 13 | SW 18 | WNW 9 | WNW 9 | NW 11 | NW 12 | NW 12 |
Wave Graph | |||||||||||||||||||||
339 | 281 | 315 | 759 | 751 | 627 | 733 | 546 | 405 | 400 | 325 | 210 | 322 | 262 | 159 | 249 | 132 | 497 | 1213 | 1878 | 1977 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross-on | cross | cross-off | cross-on | cross-on | cross-off | cross | cross | glassy | cross | cross | cross-off |
High Tide | 12:34PM1.58m | 00:03AM1.74m | 12:58PM1.65m | 00:47AM1.65m | 1:25PM1.71m | 1:37AM1.53m | 1:55PM1.76m | 2:34AM1.40m | 2:29PM1.80m | 3:43AM1.27m | 3:11PM1.82m | 5:11AM1.18m | 4:03PM1.83m | ||||||||
Low Tide | 6:22PM0.59m | 6:43AM0.11m | 7:01PM0.47m | 7:13AM0.23m | 7:44PM0.37m | 7:46AM0.37m | 8:32PM0.27m | 8:22AM0.55m | 9:27PM0.20m | 9:03AM0.72m | 10:30PM0.14m | 9:54AM0.88m | 11:43PM0.09m | ||||||||
6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | |
— | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — | — | 7:47 | — | — | 7:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 14 | 15 | 16 | 14 | 15 | 16 | 13 | 16 | 16 | 14 | 16 | 17 | 16 | 18 | 18 | 16 | 16 | 16 | 14 |
Feels °C | 12 | 12 | 10 | 11 | 11 | 10 | 10 | 11 | 9 | 15 | 14 | 12 | 15 | 16 | 16 | 16 | 16 | 15 | 13 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SW 17 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | NW 7 | SSW 14 | NW 7 | NW 10 | NW 10 | NW 9 | NW 9 | WNW 9 | WNW 9 | NW 11 | NW 12 | NW 12 |
339 | 281 | 315 | 759 | 751 | 627 | 733 | 546 | 405 | 289 | 325 | 111 | 322 | 262 | 159 | 129 | 132 | 497 | 1213 | 1878 | 1977 | |
Swell 2 Height (m) Direction Period (s) | S 12 | S 11 | SW 13 | SSE 10 | W 10 | S 10 | W 11 | W 11 | S 9 | SSW 14 | W 10 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SW 16 | S 12 | SSW 19 | SSW 19 | SSW 18 |
99 | 88 | 88 | 32 | 18 | 7 | 9 | 10 | 2 | 400 | 18 | 210 | 154 | 154 | 151 | 249 | 130 | 103 | 450 | 470 | 553 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | SW 13 | S 10 | W 11 | S 9 | W 12 | S 10 | S 10 | SW 21 | W 10 | SW 19 | NW 11 | SSE 13 | SSE 12 | S 12 | SSW 13 | SSW 12 | SSW 16 | S 12 | S 12 | S 13 |
62 | 87 | 54 | 21 | 15 | 12 | 8 | 7 | 17 | 17 | 14 | 33 | 60 | 50 | 70 | 90 | 58 | 177 | 130 | 132 | 219 | |
Wind waves Height (m) Direction Period (s) | NW 8 | NW 8 | NW 7 | NNW 6 | NW 6 | NNW 7 | NNW 8 | NW 8 | NNW 8 | — | NW 7 | — | — | — | — | SSE 3 | SSE 3 | SE 2 | SSE 3 | S 3 | — |
169 | 208 | 151 | 112 | 152 | 412 | 452 | 530 | 464 | — | 194 | — | — | — | — | 5 | 3 | 1 | 6 | 2 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 151 | 316 | 54 | 151 | 438 | 40 | 244 | 316 | 40 | 294 | 151 | 0 | 234 | 68 | 0 | 127 | 21 | 0 | 151 | 722 | 0 |
Best forecast wave conditions in Humboldt County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Cape Mendocino Surf forecast
The above surf forecast table for Cape Mendocino provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cape Mendocino can be found by selecting the local surf guide option on the grey menu. Our Cape Mendocino 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 (Cape Mendocino) 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 Cape Mendocino 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.
Cape Mendocino is 47 km (29 miles) from Eureka. If you plan a vacation in Humboldt County, look for hotels and other accommodation in Eureka. Eureka has rooms for a wide range of budgets as well as car hire and transport links.











