
Surf Forecasts:
Cape Mendocino surf forecast from 21 Jul 2026:
- Best quality surf: Monday 20 Jul, 8PM (local time) - 3ft (0.9m), 16s period, SW swell with glassy winds.
- Most powerful swell: Saturday 25 Jul, 11AM (local time) - 4ft (1.2m), 21s period, SSW swell with 1,221 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 8PM (local time) - 3ft (0.9m), 16s period with SW 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 Monday (Jul 20) at 8PM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 1.5m and 8s. 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 1.2m 21s and forecast to arrive on Saturday (Jul 25) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 9s period and expected on Friday (Jul 24) at 11PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 20th Jul) | 3ft (0.9m) 16s |
| Best Surf | 8PM (Mon 20th Jul) | 3ft (0.9m) 16s |
| Most Powerful | 11AM (Sat 25th Jul) | 4ft (1.2m) 21s |
Table - best surf conditions forecast for Cape Mendocino over the next 16 days.
The Lowdown
Imperial Version
Alright folks, Rusty here. Let’s have a look at what’s cooking at Cape Mendocino. The forecast is a bit of a mixed bag for the next couple of weeks, so we’ll have to pick our moments. The water is 51° right now, which is a whopping 6° colder than usual for this time of year – that’s not just a little chilly, that’s a full-on wetsuit and hood situation. Don’t be fooled by the summer dates.
We kick off the window on Monday, July 20th. The morning isn’t much to write home about – a 6ft NW windswell with a short, weak 8-second period and a moderate wave energy (792). The wind is light and onshore, so it’s gonna be a bit lumpy. However, the afternoon is where it gets interesting. The wind goes completely *glass* – dead calm. A 3ft SW groundswell rolls in with a very long 16-second period, and the energy jumps to a solid moderate level (909). That’s the standout of the whole forecast. The water is glassy, the swell is clean, and it’s a proper long-period groundswell that will wrap into the point. This is the best it’s going to get. Expect clean, lined-up waves but long waits between sets. Keep in mind this spot is for advanced surfers, and it can get crowded sometimes.
Tuesday the 21st sees the swell drop off to 2ft and 3ft with a long period, but the wind is cross or cross-on from the NW, so it’s not as clean. The energy is still moderate (611 and 441), but the quality isn’t there. Wednesday the 22nd offers a brief glimmer in the afternoon with a 3ft S swell (10 seconds) and a glassy wind again, but the energy is lower (237). It’s rideable, but nothing special.
From Thursday the 23rd right through to the end of the first week and into the second week, the pattern is dominated by fresh to strong northerly winds. Cross-shore chop becomes the norm. The swell sticks around in the 2ft to 4ft range, mostly from the SSW, with periods from 14 to 24 seconds. The energy gets very strong, peaking at 1582 on Saturday the 25th. But with a moderate to fresh north wind blowing 12-19 mph cross-shore, the surface is going to be a mess of lumpy chop. It’s a classic case of plenty of energy but terrible conditions. For a beach-and-reef setup like this, that onshore cross-chop makes it look more like a kite surfing session than a paddle surfing one.
The final week, from July 29th through August 4th, is pretty poor. The swell drops, the energy weakens down to a low 132, and the wind stays relentless from the north. It’s just a week of poor surf conditions with small, choppy waves. Not worth the drive.
So, to wrap it up: the one true standout is Monday afternoon, July 20th. A glassy, long-period groundswell at 3ft from the SW. That’s your window. Everything else requires a lot of patience and a low expectation. The long-range stuff looks promising in size but disappointing in wind.
Stay stoked, stay warm.
Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Wed afternoon, min 13°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Thu morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
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) | NW 8 | SW 16 | SW 16 | SW 16 | SSW 15 | S 12 | S 11 | S 10 | SSW 14 | SSW 14 | SSW 14 | SSE 14 | SSW 24 | SW 24 | SW 23 | SSW 21 | SW 21 | SW 20 | SSW 19 | SSW 19 | SW 18 |
Wave Graph | |||||||||||||||||||||
371 | 362 | 367 | 245 | 275 | 439 | 235 | 123 | 217 | 233 | 233 | 341 | 374 | 801 | 558 | 1221 | 898 | 872 | 1004 | 657 | 614 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | cross-on | cross-on | cross | cross-off | cross-on | glassy | glassy | cross-on | cross-on | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 5:00PM1.73m | 5:43AM1.12m | 5:42PM1.73m | 7:28AM1.07m | 6:27PM1.73m | 9:03AM1.12m | 7:14PM1.74m | 10:11AM1.21m | 8:03PM1.75m | 11:00AM1.28m | 8:50PM1.78m | 11:38AM1.33m | 9:34PM1.81m | ||||||||
Low Tide | 10:31AM0.41m | 00:05AM0.40m | 11:20AM0.62m | 1:13AM0.29m | 12:16PM0.80m | 2:16AM0.19m | 1:21PM0.93m | 3:10AM0.09m | 2:25PM1.00m | 3:58AM0.01m | 3:21PM1.02m | 4:39AM-0.05m | 4:10PM1.01m | ||||||||
6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | |
— | 8:43 | — | — | 8:42 | — | — | 8:42 | — | — | 8:40 | — | — | 8:39 | — | — | 8:38 | — | — | 8:37 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 14 | 17 | 18 | 16 | 18 | 19 | 16 | 17 | 17 | 16 | 17 | 17 | 14 | 16 | 16 | 14 | 16 | 16 | 14 |
Feels °C | 14 | 15 | 14 | 16 | 16 | 14 | 17 | 19 | 15 | 16 | 16 | 15 | 14 | 14 | 10 | 13 | 12 | 10 | 12 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | S 12 | S 11 | NNW 8 | NW 8 | SSW 14 | SSW 14 | NNW 9 | SSE 13 | SW 24 | NNW 9 | SSW 21 | SW 21 | SW 20 | SSW 19 | SSW 19 | SW 18 |
371 | 322 | 238 | 182 | 140 | 439 | 235 | 112 | 86 | 233 | 233 | 154 | 236 | 801 | 292 | 1221 | 898 | 872 | 1004 | 657 | 614 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | S 13 | S 12 | SSW 15 | NW 8 | NNW 8 | S 10 | SSW 14 | NW 8 | SSE 15 | SSE 14 | SSW 13 | SSE 13 | S 15 | S 14 | S 13 | S 12 | SSW 13 | S 12 | S 12 |
261 | 362 | 272 | 184 | 275 | 136 | 103 | 123 | 217 | 67 | 176 | 341 | 158 | 176 | 224 | 297 | 280 | 136 | 139 | 184 | 132 | |
Swell 3 Height (m) Direction Period (s) | WNW 14 | S 13 | SW 16 | SW 16 | S 11 | WNW 12 | SSW 15 | SSW 13 | S 9 | S 8 | WNW 10 | SSW 14 | SSW 24 | SSW 13 | SW 23 | SSW 13 | SSW 12 | S 14 | S 12 | — | SSW 21 |
160 | 225 | 367 | 245 | 166 | 57 | 150 | 114 | 78 | 46 | 64 | 173 | 374 | 156 | 558 | 64 | 58 | 138 | 95 | — | 180 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NNW 8 | — | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 6 | NNW 5 | NNW 6 |
— | — | — | — | — | — | — | — | — | — | 120 | — | 264 | 307 | 398 | 346 | 331 | 192 | 119 | 103 | 145 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 86 | 0 | 21 | 151 | 51 | 0 | 51 | 0 | 0 | 152 | 75 | 0 | 211 | 436 | 51 | 151 | 436 | 54 | 151 | 436 | 40 |
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.










