Cape Mendocino Surf Break

Lat Long: 40.42° N 124.40° W

Cape Mendocino Surf Forecast and Surf Report

Issued: 10 am 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cape Mendocino sea temperature is
12.7°C
1.8° 

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 12 Sep 2026:

  • Best quality surf: Saturday 12 Sep, 8PM (local time) - 3ft (0.9m), 14s period, SW swell with glassy winds.
  • Most powerful swell: Sunday 13 Sep, 8PM (local time) - 6ft (1.9m), 9s period, NW swell with 580 kJ wave energy.
  • Next surfable swell (1★+): Saturday 12 Sep, 8PM (local time) - 3ft (0.9m), 14s 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 Saturday (Sep 12) at 8PM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 1.1m and 10s. Another secondary swell of 0.4m and 3s is also forecast. 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 9s and forecast to arrive on Sunday (Sep 13) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 8s period and expected on Tuesday (Sep 15) at 5PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sat 12th Sep)3ft (0.9m) 14s
Best Surf 8PM (Sat 12th Sep)3ft (0.9m) 14s
Most Powerful 8PM (Sun 13th Sep)6ft (1.9m) 9s

Table - best surf conditions forecast for Cape Mendocino over the next 16 days.


The Lowdown

Hey folks, Rusty here. Let’s talk about Cape Mendocino. The next couple of weeks are looking like a real mixed bag, and I won’t sugarcoat it – there’s a lot of wind-kicked chop to wade through. We’ve got moderate energy in the water right now, sitting around 486 (moderate energy), but the angles are all wrong for clean surf. Water temp is about 55°F, which is a solid 3°F below the usual for this time of year, so you’ll feel that chill.

Saturday the 12th is a no-go – that NW cross-onshore breeze is ruining the 3ft SW swell. Sunday and Monday are more of the same, with Monday the 14th seeing the swell jump to 7ft from the NW and combined energy hitting 845 (strong energy). But that north wind is screaming at 19 mph, cross-shore and lumpy. That’s kite territory, not a fun paddle. Anything over 5ft is too much for beginners, and this is well into expert-only size with those conditions.

There are a couple of small windows if you’re keen. Wednesday the 16th afternoon goes glassy – dead calm, 2ft SW groundswell with a very long 16-second period. It’s tiny, combined energy is just 169 (weak), but it’ll be dead smooth. That’s a nice little session for the patient surfer.

The real standout is a long way out: Thursday the 24th afternoon. Another glass-off with 2ft SW swell, 15-second period, and 236 combined energy (weak). The wind is nil, so the surface will be like a lake. That long-period groundswell from the SW works well on the points here, so the waves should have some push and shape, even if it’s not big.

Otherwise, from the 17th through the 23rd, it’s a long stretch of poor conditions – strong north winds, lumpy cross-chop, and not worth the drive. Thursday the 24th is the one to pencil in. It’s a small day, but it’ll be clean and glassy. That’s as good as it gets in this window.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Sun afternoon, min 12°C on Sun night). Winds increasing (calm on Sat night, fresh winds from the NNW by Mon afternoon).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Thu morning, min 13°C on Tue morning). Winds decreasing (fresh winds from the N on Tue afternoon, calm by Wed night).

Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
2
3
1
1
2
0
0
0
0
0
0
1
1
1
1
2
3
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
SW
14
0.9
SW
14
0.9
SW
14
1.4
WNW
8
1.6
NW
9
1.8
NW
9
2
NW
8
2.1
NW
8
0.5
SW
17
0.5
SW
17
0.5
SW
16
0.4
SW
16
0.5
SW
16
0.5
SW
16
0.4
SSW
18
1.6
NW
8
1.6
NW
8
1.4
NW
8
0.6
SW
19
0.6
SW
19
0.6
SW
19
Wave Graph
Metric surfscale
Energy kJ
407
301
293
242
397
513
458
490
147
140
122
87
121
121
104
330
354
256
303
303
303
Wind (km/h)
15
NW
10
NW
5
ESE
5
NW
25
N
20
N
25
NNW
30
N
20
N
25
NNW
30
N
20
NNW
15
NNW
15
NNW
5
N
15
SSW
10
SSW
5
S
10
WSW
10
NW
15
N
Wind State
cross-on
cross-on
off
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross-on
cross
glassy
on
cross-on
cross
High Tide
12:45PM1.78m
1:04AM1.62m
1:14PM1.78m
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
Low Tide
7:07PM0.22m
7:11AM0.38m
7:51PM0.17m
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
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:56
6:56
6:58
6:58
6:58
7:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:31
7:30
7:28
7:27
7:24
7:22
7:21
 mm
Temp °C
15
16
15
16
17
14
16
16
13
16
17
13
17
17
15
18
18
15
17
17
14
Feels °C
13
14
15
15
14
11
11
11
9
12
12
9
15
15
14
16
16
14
17
16
13
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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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