
Surf Forecasts:
Cape Mendocino surf forecast from 18 Jul 2026:
- Best quality surf: Monday 20 Jul, 8PM (local time) - 3ft (0.9m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Friday 24 Jul, 2PM (local time) - 3ft (0.9m), 24s period, SW swell with 801 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 8AM (local time) - 2.5ft (0.8m), 15s period with WNW 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 Sunday (Jul 19) at 8AM. The primary swell is predicted to be 0.8m and 15s 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 0.9m 24s and forecast to arrive on Friday (Jul 24) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 9s period and expected on Friday (Jul 24) at 2PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sun 19th Jul) | 2.5ft (0.8m) 15s |
| Best Surf | 8PM (Mon 20th Jul) | 3ft (0.9m) 16s |
| Most Powerful | 2PM (Fri 24th Jul) | 3ft (0.9m) 24s |
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's on the menu for the Cape Mendocino area over the next couple of weeks.
First up, the water temperature is sitting pretty average for the time of year, so no shock to the system there. The swell energy is in the moderate range, ramping up and down, but the wind is the real story here. It's going to be a persistent cross-shore or cross-onshore flow for most of the period, which is going to mess with the surface texture. The one standout window is a brief, clean spell right in the middle of the week.
The best bet on offer is going to be Tuesday afternoon, July 21st. We've got a 3ft swell rolling in from the south-southwest with a long 15-second period, which will bring some decent energy with it. The real magic is that the wind will be glassy, completely calm. The wave energy is moderate (443), and with zero wind chop, it'll be the cleanest the place will look all outlook. It's not a huge swell, but for a quiet session on a fairly consistent spot like this, it is the obvious pick.
Wednesday morning, July 22nd, is the only other glimmer. We get a 3ft swell from the south, 12-second period, and again, glassy conditions. The energy is moderate (456). It's a hair more size than Tuesday and just as clean. This is a very close second, but the slightly longer period on Tuesday gives it a bit more shape.
For the rest of the week, it's a lot of cross-shore and cross-onshore winds lumping up the surface. The swell sticks around, with some moderate energy pushing through, but the wind is a constant problem. The size will bump up, especially around the 28th of July and into the 1st of August, with some swells hitting 6ft. But the wind is going to be cranking from the north-northwest at 19 mph, creating a lumpy, cross-chop. The energy gets high (2311 on the 28th morning), but the conditions are marginal. This is the kind of setup where the experienced crew might find something, but it's going to be a battle.
From the end of July through the first of August, the swell drops right off, and the energy fades into the weak zone. The last few days of the outlook are a total write-off with poor conditions and tiny waves. There's a solid gap of no real recommendations from the end of July.
So, keep your eyes on that Tuesday the 21st and Wednesday the 22nd. That's your window for a truly clean, if not overly big, surf.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Sat afternoon, min 11°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Wed morning, min 14°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
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) | WNW 16 | WNW 16 | SW 18 | NW 8 | NW 8 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 15 | S 14 | S 12 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 26 |
Wave Graph | |||||||||||||||||||
463 | 452 | 375 | 423 | 445 | 434 | 419 | 261 | 362 | 367 | 245 | 272 | 665 | 268 | 173 | 220 | 233 | 233 | 447 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross | cross-on | glassy | cross-off | glassy | cross | cross-off | cross | cross-on | cross |
High Tide | 2:11AM1.69m | 3:40PM1.69m | 3:10AM1.48m | 4:20PM1.72m | 4:18AM1.27m | 5:00PM1.73m | 5:43AM1.12m | 5:42PM1.73m | 7:28AM1.07m | 6:27PM1.73m | 9:03AM1.12m | 7:14PM1.74m | |||||||
Low Tide | 8:45PM0.65m | 9:05AM-0.04m | 9:49PM0.58m | 9:47AM0.18m | 10:56PM0.49m | 10:31AM0.41m | 00:05AM0.40m | 11:20AM0.62m | 1:13AM0.29m | 12:16PM0.80m | 2:16AM0.19m | 1:21PM0.93m | 3:10AM0.09m | ||||||
— | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | |
8:45 | — | 8:44 | — | — | 8:44 | — | — | 8:43 | — | — | 8:42 | — | — | 8:42 | — | — | 8:40 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 16 | 14 | 16 | 16 | 14 | 14 | 15 | 14 | 17 | 17 | 18 | 20 | 19 | 17 | 17 | 18 | 16 |
Feels °C | 10 | 12 | 12 | 10 | 14 | 14 | 12 | 14 | 14 | 13 | 16 | 16 | 18 | 20 | 18 | 17 | 17 | 18 | 15 |
Swell 1 Height (m) Direction Period (s) | WNW 16 | WNW 16 | WNW 16 | NW 8 | NW 8 | NW 8 | NNW 8 | NW 8 | NNW 8 | NW 8 | NW 8 | NNW 8 | S 14 | S 12 | NW 8 | NNW 8 | NW 9 | SSW 14 | NNW 8 |
463 | 452 | 353 | 423 | 445 | 509 | 554 | 439 | 365 | 274 | 196 | 175 | 665 | 268 | 158 | 136 | 216 | 233 | 302 | |
Swell 2 Height (m) Direction Period (s) | NW 12 | SW 17 | SW 18 | WNW 16 | WNW 15 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | S 12 | SSW 15 | NW 8 | NW 8 | S 10 | S 9 | SSW 14 | NW 10 | SSW 14 |
69 | 358 | 375 | 348 | 259 | 434 | 419 | 261 | 362 | 367 | 243 | 272 | 151 | 158 | 168 | 103 | 233 | 77 | 173 | |
Swell 3 Height (m) Direction Period (s) | SW 14 | NW 11 | WNW 10 | SW 16 | SW 16 | WNW 14 | WNW 14 | WNW 14 | S 12 | S 13 | SW 16 | S 12 | WNW 12 | SSW 15 | SSW 14 | SSW 14 | S 8 | S 8 | SSW 26 |
132 | 94 | 71 | 132 | 201 | 239 | 163 | 160 | 106 | 268 | 245 | 171 | 56 | 188 | 173 | 220 | 65 | 41 | 447 | |
Wind waves Height (m) Direction Period (s) | NNW 7 | NW 7 | NW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 8 | — |
107 | 183 | 258 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 267 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 40 | 151 | 51 | 40 | 151 | 51 | 40 | 45 | 86 | 21 | 74 | 0 | 0 | 0 | 51 | 0 | 152 | 151 | 52 |
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.










