Harbor Entrance at Eureka Surf Break

Lat Long: 40.77° N 124.23° W

Harbor Entrance at Eureka Surf Forecast and Surf Report

Issued: 4 am 20 Oct 2026 (local time)

Forecast update in  hr  min

Today's Harbor Entrance at Eureka sea temperature is
12.1°C
1.1° 

Harbor Entrance at Eureka surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Harbor Entrance at Eureka surf forecast from 20 Oct 2026:

  • Best quality surf: Tuesday 20 Oct, 11AM (local time) - 8ft (2.5m), 12s period, WNW swell with glassy winds.
  • Most powerful swell: Tuesday 20 Oct, 11AM (local time) - 8ft (2.5m), 12s period, WNW swell with 1,971 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 20 Oct, 11AM (local time) - 8ft (2.5m), 12s period with WNW swell.

Best Forecast Surf Conditions for Harbor Entrance at Eureka this week:

The surf forecast for Harbor Entrance at Eureka over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Oct 20) at 11AM. The primary swell is predicted to be 2.5m and 12s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Harbor Entrance at Eureka in the next 16 days are 2.5m 12s and forecast to arrive on Tuesday (Oct 20) at 11AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 16s period and expected on Tuesday (Oct 20) at 11AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)11AM (Tue 20th Oct)8ft (2.5m) 12s
Best Surf11AM (Tue 20th Oct)8ft (2.5m) 12s
Most Powerful11AM (Tue 20th Oct)8ft (2.5m) 12s

Table - best surf conditions forecast for Harbor Entrance at Eureka over the next 16 days.


Short Range Forecast

Mostly dry. Very mild (max 15°C on Wed morning, min 10°C on Tue morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Sun morning, min 10°C on Fri morning). Wind will be generally light.

Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
2
1
2
2
0
0
2
1
0
4
3
3
2
1
0
1
0
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
WNW
12
2.1
WNW
11
1.5
NW
10
1.3
NW
9
1.2
NW
8
1.2
NW
7
0.9
NW
13
1.1
NW
11
2.5
NNW
8
3
NW
9
3
NW
8
2.5
NNW
9
1.9
NW
10
1.6
NW
10
1.3
NW
10
0.9
NNW
7
0.8
NNW
7
0.7
W
10
0.7
W
10
0.8
NNW
7
0.6
SW
16
Wave Graph
Metric surfscale
Energy kJ
1971
1006
424
252
182
151
234
293
889
1121
1179
1080
667
507
290
84
66
96
90
64
219
Wind (km/h)
5
NNW
10
NNE
5
NE
5
W
5
SSW
0
S
10
W
20
N
10
NNE
15
NNW
20
N
5
E
5
NW
0
NNW
5
ESE
5
NW
5
NNE
5
E
5
NW
5
NNW
5
ESE
Wind State
glassy
cross
cross
cross-on
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-off
glassy
glassy
glassy
glassy
cross-on
glassy
on
glassy
glassy
High Tide
9:05AM1.42m
7:57PM1.46m
9:36AM1.54m
9:04PM1.49m
10:03AM1.67m
10:01PM1.53m
10:29AM1.80m
10:54PM1.57m
10:55AM1.94m
11:44PM1.59m
11:24AM2.06m
00:34AM1.59m
11:55AM2.17m
1:24AM1.57m
Low Tide
2:34PM1.00m
2:58AM0.27m
3:31PM0.80m
3:40AM0.30m
4:18PM0.56m
4:19AM0.35m
5:01PM0.31m
4:55AM0.42m
5:43PM0.06m
5:31AM0.52m
6:24PM-0.16m
6:08AM0.63m
7:07PM-0.33m
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:33
—
—
7:33
—
—
7:35
—
—
7:35
—
—
7:37
—
—
7:37
—
—
7:39
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
6:29
—
—
6:28
—
—
6:25
—
—
6:24
—
—
6:22
—
—
6:22
—
—
6:21
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 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
13
13
13
15
14
13
12
12
12
10
12
12
15
14
14
19
17
15
17
15
14
Feels °C
12
10
11
13
12
12
10
10
10
7
7
9
12
10
10
16
13
11
13
11
11
  • 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
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Information about the Harbor Entrance at Eureka Surf forecast

The above surf forecast table for Harbor Entrance at Eureka provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Harbor Entrance at Eureka can be found by selecting the local surf guide option on the grey menu. Our Harbor Entrance at Eureka 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 (Harbor Entrance at Eureka) 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 Harbor Entrance at Eureka 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.

Harbor Entrance at Eureka is 8 km (5 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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