Cape Mendocino Surf Break

Lat Long: 40.42° N 124.40° W

Cape Mendocino Surf Forecast and Surf Report

Issued: 4 pm 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Cape Mendocino sea temperature is
10.3° C
3.1° 

Cape Mendocino surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Cape Mendocino surf forecast from 21 Jul 2026:

  • Best quality surf: Saturday 25 Jul, 5AM (local time) - 3ft (0.9m), 22s period, SW swell with cross-offshore 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 1.6m 9s period and expected on Saturday (Jul 25) at 2AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Mon 20th Jul)3ft (0.9m) 16s
Best Surf 5AM (Sat 25th Jul)3ft (0.9m) 22s
Most Powerful11AM (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 Forecast

Mostly dry. Warm (max 20°C on Wed afternoon, min 14°C on Mon afternoon). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Thu afternoon, min 12°C on Sat night). Wind will be generally light.

Mon
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
1
1
3
1
0
1
0
0
2
1
2
3
2
1
3
2
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SW
16
0.9
SW
16
0.7
SW
16
0.8
SSW
15
1.3
S
12
1.1
S
11
0.9
S
10
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.8
SSE
14
0.8
SSE
13
0.9
SW
24
0.7
SW
23
1.2
SSW
21
1
SW
21
1.1
SW
20
1.2
SSW
19
0.9
SSW
19
1
SW
18
Wave Graph
Metric surfscale
Energy kJ
362
367
245
275
522
279
158
217
233
233
265
232
801
558
1221
898
872
1004
657
614
Wind (km/h)
5
WSW
5
NNW
15
NNW
15
NNW
5
ESE
20
S
20
S
15
SSE
15
S
10
SSW
5
E
10
NW
10
NW
10
NNE
20
NNW
25
N
20
NNE
25
NNW
25
N
20
N
Wind State
glassy
glassy
cross-on
cross
glassy
cross
cross
cross-off
cross
cross-on
glassy
cross-on
cross-on
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
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
cloud
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:05
6:05
6:07
6:07
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:43
8:42
8:42
8:40
8:39
8:38
8:37
 mm
Temp °C
16
14
18
18
18
19
20
19
17
18
15
16
17
15
17
17
15
15
16
14
Feels °C
15
14
16
16
17
16
19
18
15
16
15
15
16
15
14
13
11
11
12
10
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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