Cape Mendocino Surf Break

Lat Long: 40.42° N 124.40° W

Cape Mendocino Surf Forecast and Surf Report

Issued: 4 am 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cape Mendocino sea temperature is
12.2° C
2.1° 

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 16 Aug 2026:

  • Most powerful swell: Sunday 23 Aug, 11AM (local time) - 7ft (2.2m), 8s period, NW swell with 619 kJ wave energy.

Best Forecast Surf Conditions for Cape Mendocino this week:

The most powerful waves expected at Cape Mendocino in the next 16 days are 2.2m 8s and forecast to arrive on Sunday (Aug 23) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Sunday (Aug 23) at 8AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Sun 23rd Aug)7ft (2.2m) 8s

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


The Lowdown

Alright, Rusty here. Let's have a look at what's coming down the line for this stretch of coast.

Right off the bat, I gotta be straight with you – the first week is a dud. We're looking at a run of days from Sunday the 16th all the way through to Saturday the 22nd with just nothing worth paddling out for. The swell is tiny, the wind is mostly a messy cross-shore, and everything is labelled as poor or marginal. It's a flat spell, plain and simple. Don't bother checking the buoys, just use the time to fix your dings and sort your wax.

Now, things start to get a bit more interesting heading into the following week. The standout window, and pretty much the only real chance for a wave, lands on Sunday the 23rd. Cape Mendocino picks up a 7 ft swell from the NW, but here's the kicker – that period is only 8 seconds. That's short-period wind swell, so it'll be a bit of a messy, bumpy affair on the surface. The combined energy is in the moderate range, hitting 900, so there's plenty of water moving around. The water itself is much colder than usual for this time of year, sitting at just 54°F, which is a solid 4°F colder than average.

Because the swell is over 5 ft, this isn't really a beginner's day. And while it's not over 8 ft, the short period and cross-onshore winds from the WNW will chop it up. For a cape like this, a 7 ft NW wind swell with a cross-onshore breeze... honestly, this set-up looks more interesting for the kite surfers than for us paddle guys. It's going to be bumpy and hard to get a clean line. The wind shifts to a cross-shore from the South in the afternoon, but the quality is still just marginal.

Monday the 24th sees the swell dropping off to 6 ft and then 5 ft, still from the NW with that same short 8-second period. The wind stays cross-onshore, so it's more of the same – choppy and average. You'd be fighting it more than enjoying it.

After that little pulse, we sink back into a prolonged period of small, weak, and wind-affected surf from Tuesday the 25th right through to Monday the 31st. The swell drops to under 3 ft, often below 3 ft, and the wind is a persistent cross-shore around 16 mph. It's just not worth the effort. The second week is a write-off for anything decent.

So, to sum it up: the first eight days are a total bust. Your one and only chance to get wet is Sunday the 23rd, but don't expect perfection. It's a short-period, wind-affected NW swell better suited to kites than paddles. The rest of the forecast is a sad story of flatness and cross-shore chop.

Stay patient, and check back closer to the time. Things can always change.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 16°C on Sun morning, min 12°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

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

Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
0
0
0
0
0
1
0
0
1
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)
1
SSW
16
1
SSW
16
0.9
SSW
15
0.9
SSW
14
0.9
SSW
15
0.9
SSW
15
0.7
SSW
14
0.8
SSW
15
0.8
SSW
16
0.8
SSW
16
0.9
SSW
15
0.9
SSW
15
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.6
SSW
14
0.4
SW
18
0.5
SSW
13
0.5
SSW
13
0.4
SW
18
0.5
S
14
Wave Graph
Metric surfscale
Energy kJ
519
512
334
330
334
334
178
249
291
273
305
314
233
226
236
156
111
99
99
112
106
Wind (km/h)
15
NNW
25
N
15
N
15
NNW
20
NNW
20
N
25
NNW
25
N
20
NNW
25
NNW
25
N
20
N
15
NNW
20
NNW
15
N
20
N
25
N
20
NNE
25
N
25
N
20
N
Wind State
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross-off
cross
cross
cross
High Tide
2:43PM1.75m
2:58AM1.41m
3:18PM1.74m
4:06AM1.25m
3:55PM1.71m
5:35AM1.14m
4:39PM1.68m
7:24AM1.13m
5:31PM1.65m
8:53AM1.20m
6:30PM1.65m
9:48AM1.27m
7:30PM1.67m
Low Tide
8:26AM0.26m
9:14PM0.38m
9:04AM0.47m
10:12PM0.35m
9:47AM0.67m
11:15PM0.32m
10:37AM0.85m
00:23AM0.29m
11:45AM0.99m
1:32AM0.24m
1:04PM1.05m
2:33AM0.18m
2:14PM1.05m
3:24AM0.11m
part cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
6:30
6:31
6:31
6:31
6:33
6:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:14
8:12
8:10
8:08
8:07
8:06
8:05
 mm
Temp °C
16
16
14
15
16
13
16
16
14
16
17
14
15
16
14
16
18
15
16
17
14
Feels °C
14
13
10
13
13
9
13
12
11
12
14
11
13
14
12
13
15
11
12
13
10
  • Map Icons:
  • Break
  • 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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