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Surf Forecasts:

Cape Mendocino surfForecast / CAL – Humboldt / USA

information circle12 Day Weather and Surf, issued 4 pm Monday 15 Sep 2025 PDT
Forecast update in hr  min  s Forecast update imminent
Cape Mendocino surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cape Mendocino sea temperature is
13.0° C
 (Which is 1.4°C colder than average for this time of year)

Best Forecast Surf Conditions for Cape Mendocino this week:

The surf forecast for Cape Mendocino over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 15) at 11PM. The primary swell is predicted to be 1.0m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Cape Mendocino in the next 12 days are 3.5m 10s and forecast to arrive on Thursday (Sep 18) 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 3.5m 10s period and expected on Thursday (Sep 18) at 2PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Mon 15th Sep)3.5ft (1.0m) 9s
Best Surf 5AM (Thu 18th Sep)10ft (3.0m) 9s
Most Powerful11AM (Thu 18th Sep)11ft (3.5m) 10s

Table - best surf conditions forecast for Cape Mendocino over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Very mild (max 19°C on Tue morning, min 14°C on Tue night). Winds increasing (calm on Tue morning, fresh winds from the N by Wed night).

Days 3-6 Weather Summary Mostly dry. Very mild (max 18°C on Sat afternoon, min 14°C on Thu night). Winds decreasing (fresh winds from the N on Thu afternoon, calm by Fri night).

Mon
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
1
2
1
0
0
1
!
0
0
0
1
3
2
2
3
2
1
2
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
WNW
0.9
WNW
0.7
SSW
0.7
SSW
0.7
S
0.7
S
0.7
S
2.5
NW
3.5
NW
0.7
SSW
0.6
SSW
0.4
S
2.2
NW
1.8
NW
1.6
NW
1.6
NW
1.5
WNW
1.8
NW
2.3
NW
1.7
WNW
2.1
NW
Period(s) (?)1091918181616810151414910991212111112
Wave
Graph
(?)Metric surfscale
Energy (?)35024542454459555172613602748298207111996777630670925112822617561283
Wind
(km/h)
20
N
10
N
10
W
10
NNW
20
N
25
N
25
N
30
N
35
N
30
N
20
N
15
NNW
20
NNW
5
NNW
10
N
15
NNW
5
NNE
20
N
30
N
25
NNE
25
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrossoncrosscrosscrosscrosscrosscrosscrosscrosscrosscrossglasscrosscrossglasscrosscrosscross-
off		cross
High Tide
/ height (m)
6:10PM
1.78
9:00AM
1.43
7:24PM
1.78
9:46AM
1.51
8:31PM
1.79
10:24AM
1.58
9:29PM
1.79
10:57AM
1.63
10:20PM
1.76
11:27AM
1.66
11:07PM
1.71
11:53AM
1.68
11:52PM
1.63
12:17PM
1.69
Low Tide
/ height (m)
2:03AM
-0.03
2:01PM
0.96
3:03AM
-0.05
3:04PM
0.84
3:52AM
-0.04
3:57PM
0.70
4:33AM
0.00
4:43PM
0.57
5:09AM
0.08
5:24PM
0.45
5:41AM
0.18
6:03PM
0.35
6:11AM
0.31
Mon
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Sunrise--6:58--6:58--7:00--7:01--7:01--7:03--7:03
Sunset7:27--7:24--7:22--7:21--7:20--7:17--7:15--
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
Rain (mm)
---------------------
Temp. °C181719191717181516171415161417181818181416
Feels °C (?)15161819161214121112912131215151917151012
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for CAL - Humboldt

  1. weather stationWind Update Continuing clean conditions at Cape Mendocino (calm at Fortuna 28 km from Cape Mendocino). 0.8m 10s swell from the WNW with a 0.4m 13s groundswell from the SSW and a 0.3m 18s long period groundswell from the S. 3 swells combining to make bigger set waves.

    59 minutes ago Cape Mendocino
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28 km away, 59 min ago

3 km/h
SSW
0.0
13.0
Air / Water (°C)
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cape Mendocino surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Cape Mendocino at:
surf-forecast.com

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 12 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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