Cape Mendocino Surf Break

Lat Long: 40.42° N 124.40° W

Cape Mendocino Surf Forecast and Surf Report

Issued: 4 pm 03 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cape Mendocino sea temperature is
11.4° C
2.6° 

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 4 Aug 2026:

  • Best quality surf: Wednesday 5 Aug, 8PM (local time) - 5ft (1.6m), 8s period, NW swell with glassy winds.
  • Most powerful swell: Wednesday 5 Aug, 8AM (local time) - 6ft (1.9m), 8s period, NW swell with 479 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 5 Aug, 5AM (local time) - 1.5ft (0.4m), 15s 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 Wednesday (Aug 05) at 5AM. The primary swell is predicted to be 0.4m 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 1.9m 8s and forecast to arrive on Wednesday (Aug 05) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 9s period and expected on Tuesday (Aug 04) at 2AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 5th Aug)1.5ft (0.4m) 15s
Best Surf 8PM (Wed 5th Aug)5ft (1.6m) 8s
Most Powerful 8AM (Wed 5th Aug)6ft (1.9m) 8s

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 table for our stretch of coast.

Right off the bat, I gotta be straight with you – this outlook is a tough one. We’ve got a long stretch of poor surf conditions ahead, with only a very brief window of something rideable. The water is sitting at 53° and that’s a whopping 5° colder than usual for this time of year, so you’ll want a thick suit if you’re even thinking about getting in. The combined swell energy for the first few days is weak, hovering around 95 to 100 (weak energy), and it’s all cross-shore wind, so expect lumpy, bumpy, messy surf.

We’ve got a solid gap of nothing good from the start of the period all the way through to the 4th of August. Then, on the 5th of August, we finally see a pulse of energy. Wednesday morning kicks off with a 6 ft swell from the NW, but the period is a short 8 seconds. That’s windswell, not groundswell, so the waves will be a bit gutless and crumbly. The combined energy jumps to 583 (moderate wave energy), which is a real step up. The wind is light, cross-shore out of the SSW at 9 mph, so it’s not perfect, but it’s the best we’ll see. This is the one standout. Cape Mendocino will be the only option, and it’s an advanced-only wave. With 6 ft, that’s a bit much for beginners, and the short period means it’ll be a bit fat and hard to read. Wednesday afternoon is similar, 6 ft and 8 seconds, with a lighter 6 mph cross-shore wind. It’s marginal, but it’s the only rideable surf in the whole 16-day window.

After that, it’s back to the doldrums. From the 6th of August right through to the 18th of August, every single session is rated as poor. The swell stays tiny, between 1.0 ft and 3 ft, with the wind howling onshore or cross-shore at 12 to 19 mph. The combined energy does climb into the 200s, 300s, and even 900s on the 15th of August (strong to very strong wave energy), but with that wind, it’s just a washing machine. The swell direction swings around from SSW to WNW, but the wind never cooperates. For the advanced crew, the 15th of August sees 3 ft from the SSW with a 17-second period, but with 19 mph cross-shore wind, it’s a no-go. The 18th of August has a glimmer of hope with an onshore 6 mph wind from the W and 2 ft from the W with a 15-second period, but it’s still only marginal at best.

So, the bottom line? If you’re a masochist, Wednesday the 5th of August is your day at Cape Mendocino. Otherwise, this is a long, blank stretch. The setup is honestly more interesting for kite surfing than paddle surfing given the wind and chop. Stay patient, and remember, forecasts can change.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Mon afternoon, min 14°C on Mon night). Winds decreasing (fresh winds from the N on Mon afternoon, calm by Wed night).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Sat afternoon, min 12°C on Thu night). Mainly fresh winds.

Mon
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
2
2
1
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SW
13
0.3
SW
16
0.4
SW
16
0.4
SW
15
0.4
SW
15
1.9
NW
8
1.7
NW
8
0.5
SW
14
0.5
SW
13
0.5
SW
13
0.6
SSW
13
0.4
SW
18
0.4
SSW
18
0.5
SW
13
0.5
SSW
17
0.6
SSW
18
0.5
SSW
16
0.6
SSW
16
0.6
SSW
16
0.6
SSW
15
Wave Graph
Metric surfscale
Energy kJ
43
41
86
79
76
479
400
95
88
85
113
85
130
107
170
240
146
198
196
167
Wind (km/h)
30
N
20
N
10
NNW
10
NNW
10
N
15
SSW
10
SSW
5
NNW
10
NW
20
N
25
N
25
NNW
30
N
20
N
25
NNW
30
N
30
N
30
N
30
N
30
N
Wind State
cross
cross
cross-on
cross-on
cross
cross
cross
glassy
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
3:22PM1.69m
3:30AM1.28m
3:58PM1.75m
4:51AM1.14m
4:41PM1.81m
6:35AM1.09m
5:33PM1.86m
8:19AM1.14m
6:32PM1.91m
9:34AM1.24m
7:36PM1.98m
10:27AM1.35m
8:39PM2.04m
Low Tide
9:54PM0.50m
9:34AM0.46m
10:58PM0.37m
10:18AM0.65m
00:08AM0.24m
11:14AM0.82m
1:20AM0.09m
12:27PM0.95m
2:27AM-0.06m
1:45PM1.00m
3:27AM-0.20m
2:55PM0.97m
4:20AM-0.29m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:18
6:18
6:20
6:20
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:30
8:29
8:28
8:25
8:24
8:23
8:22
 mm
Temp °C
18
16
17
17
15
17
18
15
16
17
15
17
17
14
17
18
15
17
18
15
Feels °C
12
12
16
16
13
16
16
15
15
15
11
13
12
10
13
13
10
11
13
11
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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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