
Surf Forecasts:
Cape Mendocino surf forecast from 14 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 7ft (2.1m), 8s period, NW swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 5AM (local time) - 7ft (2.1m), 8s period, NW swell with 585 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 11PM (local time) - 2.5ft (0.7m), 18s 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 Wednesday (Sep 16) at 11PM. The primary swell is predicted to be 0.7m and 18s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cape Mendocino in the next 16 days are 2.1m 8s and forecast to arrive on Thursday (Sep 17) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 8s period and expected on Wednesday (Sep 16) at 5AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 16th Sep) | 2.5ft (0.7m) 18s |
| Best Surf | 5AM (Thu 17th Sep) | 7ft (2.1m) 8s |
| Most Powerful | 5AM (Thu 17th Sep) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Cape Mendocino over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a hard look at what’s on offer down at the Cape.
Honestly, for the next two weeks, we’re looking at a pretty grim stretch. There are long gaps where there’s just nothing rideable, and when swell does show up, the wind is usually tearing it apart. For the most part, the coast is going to be a choppy, cross-shore mess – staying out of the water is the smarter call most days. The standout window, if you can call it that, is a brief window later on the 24th, but it comes with a massive caveat.
Right now, from Sunday the 13th straight through until Wednesday the 16th, it’s a write-off. We’ve got moderate to fresh cross-shore winds daily, with swell heights either too small or badly wind-affected. The combined wave energy is moderate at best, hitting around 676 on Sunday but with a messy 9-second period and a 15 mph cross-breeze, it’s just a lumpy line of whitewater. No point even suiting up.
We get a tiny glimmer on Thursday the 17th morning. Cape Mendocino will see a 6 ft NW swell, period only 8 seconds, energy at 725, so it's a moderate push. Wind is a gentle cross-shore from the south at 9 mph, which cleans it up a bit, but it’s still just marginal. By the afternoon the wind swings light WSW, making it a cross-onshore, and the quality drops again. Not the day to call in sick for.
From Friday the 18th through Tuesday the 22nd, it’s back to the doldrums with weak, long-period leftovers in the 1 ft to 3 ft range, but again, cross-shore winds just ruin any chance of a micro-session. The energy stays mostly moderate, nothing to get excited about.
Now, the best chance, and it’s a serious maybe, lands on Wednesday the 23rd morning. Cape Mendocino picks up a solid 8 ft swell from the NW with a 9-second period, combined energy surging to a strong 1200. The wind is light from the south at 9 mph, making it a cross-shore – that could clean it up nicely. But here’s the problem: at 8 ft, this is expert territory. Too big for anyone but the crew who know what they’re doing on a ledge. It’s a short-period swell, so it’s going to dump hard and fast.
But the real standout? I’m eyeing up Thursday the 24th afternoon. That’s the one. We see a 10 ft NW swell, 9-second period, energy hitting a very strong 1380. The wind is moderate cross-shore from the south at 15 mph. Normally that wind is trouble, but for this size, and with the right tide, it might just hold shape. The forecast even calls it "wind and tide favorable, but the swell is predicted to be too big for this break." That’s the warning. This is a beast of a day – expert only. If you’re not on a gun and confident in heavy water, stay on the beach. For the brave few, it could be the session of the month. Friday the 25th still has a solid 8 ft NW swell and lighter WNW cross-onshore wind, promising some big, walled-up waves, but you’re fighting the wind angle.
After that, Saturday the 26th and into the following week, the wind gets up again with fresh northerlies, the swell drops, and we’re back to watching the horizon. A few pulses in the 3 ft to 4 ft range show up but with 22 mph cross-shore winds, it’s just a messy, lumpy ocean. Not worth the paddle.
So to wrap it up: the next two weeks are pretty bleak overall, with a ton of no-go days. Your only window worth looking at is that Wednesday the 23rd morning for the brave, and Thursday the 24th afternoon for the truly experienced crew. If you're a beginner, give Cape Mendocino a miss until the winds calm down and the swell drops below 5 ft. Otherwise, sit this one out.
Stay safe, Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Mon afternoon, min 12°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Fri afternoon, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | NW 9 | NW 8 | NW 7 | SW 17 | SW 17 | SW 16 | SW 16 | S 19 | SW 16 | SSW 18 | NW 8 | NW 8 | NW 8 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 |
Wave Graph | |||||||||||||||||||
513 | 395 | 429 | 147 | 177 | 122 | 87 | 118 | 121 | 104 | 418 | 355 | 304 | 303 | 303 | 303 | 258 | 375 | 375 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross-off | cross | cross-on | cross-off | cross | cross | cross | cross | cross | cross |
High Tide | 1:56AM1.48m | 1:43PM1.76m | 2:54AM1.35m | 2:16PM1.72m | 4:02AM1.24m | 2:53PM1.66m | 5:28AM1.19m | 3:40PM1.60m | 7:07AM1.20m | 4:38PM1.55m | 8:20AM1.26m | 5:46PM1.53m | |||||||
Low Tide | 7:46AM0.56m | 8:37PM0.16m | 8:24AM0.74m | 9:27PM0.17m | 9:07AM0.90m | 10:23PM0.21m | 10:03AM1.02m | 11:28PM0.24m | 11:25AM1.09m | 00:39AM0.24m | 12:52PM1.09m | 1:44AM0.22m | |||||||
— | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | |
— | — | 7:28 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:21 | — | — | 7:20 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 16 | 13 | 16 | 16 | 14 | 15 | 16 | 14 | 16 | 16 | 14 | 16 | 17 | 13 | 17 | 17 | 14 |
Feels °C | 11 | 10 | 11 | 9 | 12 | 11 | 11 | 11 | 12 | 12 | 14 | 15 | 13 | 13 | 13 | 10 | 15 | 14 | 11 |
Swell 1 Height (m) Direction Period (s) | NW 9 | SW 13 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | NW 8 | NW 8 | NW 8 | NW 8 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 |
336 | 84 | 188 | 147 | 177 | 122 | 87 | 87 | 121 | 497 | 418 | 355 | 304 | 303 | 303 | 303 | 258 | 375 | 375 | |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SW 17 | SW 13 | SW 12 | WNW 13 | NW 13 | NW 12 | NW 12 | S 19 | SSW 18 | S 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | S 13 | S 13 | SSW 13 |
116 | 107 | 83 | 53 | 69 | 42 | 37 | 36 | 110 | 104 | 147 | 198 | 137 | 167 | 120 | 110 | 92 | 88 | 58 | |
Swell 3 Height (m) Direction Period (s) | SW 19 | WSW 9 | WNW 15 | WNW 13 | SW 12 | SW 12 | S 20 | S 19 | NW 11 | SW 14 | SW 21 | SW 21 | SW 21 | SSE 10 | SSE 10 | SSE 9 | NW 10 | SW 13 | S 10 |
127 | 8 | 84 | 17 | 37 | 23 | 67 | 118 | 32 | 71 | 160 | 162 | 160 | 10 | 10 | 8 | 26 | 26 | 18 | |
Wind waves Height (m) Direction Period (s) | NW 9 | NW 8 | NW 7 | NNW 8 | NW 8 | NNW 8 | NNW 8 | NNW 8 | NW 8 | — | — | — | — | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 |
513 | 395 | 429 | 590 | 558 | 480 | 770 | 605 | 450 | — | — | — | — | 267 | 261 | 202 | 271 | 302 | 256 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 40 | 294 | 436 | 40 | 100 | 100 | 40 | 151 | 54 | 0 | 152 | 51 | 0 | 151 | 52 | 21 | 151 | 51 | 21 |
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.










