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 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Harbor Entrance at Eureka sea temperature is
14.4°C
0.1° 

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 26 Aug 2026:

  • Best quality surf: Wednesday 26 Aug, 8AM (local time) - 2ft (0.6m), 16s period, SW swell with glassy winds.
  • Most powerful swell: Monday 31 Aug, 2AM (local time) - 6.5ft (2.0m), 7s period, NNW swell with 418 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 26 Aug, 8AM (local time) - 2ft (0.6m), 16s period with SW 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 Wednesday (Aug 26) at 8AM. The primary swell is predicted to be 0.6m and 16s period with a secondary swell of 0.5m and 13s. 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 2.0m 7s and forecast to arrive on Monday (Aug 31) at 2AM. 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 18s period and expected on Saturday (Aug 29) at 5PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Wed 26th Aug)2ft (0.6m) 16s
Best Surf 8AM (Wed 26th Aug)2ft (0.6m) 16s
Most Powerful 2AM (Mon 31st Aug)6.5ft (2.0m) 7s

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


The Lowdown

Alright, let’s talk waves. It’s a dry spell for us, no two ways about it. The forecast looks bleak for a good few days, with a long stretch of poor conditions starting now. It isn’t until the first few days of September that we get a whisper of something worth paddling for, and even then, it’s not looking easy. There’s a big gap of several days with nothing that’s really going to get you out of bed, then a solid pulse of swell shows up, but it brings its own problems.

Harbor Entrance at Eureka is the only game in town. Right now, we’re dealing with tiny, short-period northwest windswell that’s getting chopped up by the cross-onshore breeze. Thursday and Friday are a total washout. Saturday the 29th picks up in size, with waves pushing toward 6ft, but the wind is howling onshore and it’s a mess. Sunday holds some size early but is still messy. The real event looks like it arrives on Friday morning, the 4th of September. The swell is forecast to be a proper 10ft from the northwest, with a period around 9 seconds. The energy reading is strong as hell. But it’s not going to be clean. The tide looks questionable, and at that size, it’s beyond what most dudes should be paddling into. It’s a big, heavy day for experts only.

After that, the surf backs off quickly. We’ll see some 6ft waves drop to 4ft over the weekend, with a few windows of clean, offshore wind on Sunday the 6th. There’s another pulse of long-period groundswell from the southwest forecast for midweek of the 9th and 10th, but it’s not looking like a clear winner and the winds continue to shift around. That’s a longer-range call and less certain.

So, the plan is simple. Skip the next week. Circle Friday the 4th on the calendar if you’ve got the skills and the nerve. Everything after that is more of a waiting game. Things might change, and this poor run won’t last forever, but right now you’re not missing much.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Mostly dry. Very mild (max 14°C on Sat morning, min 12°C on Sat night). Wind will be generally light.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
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
1
0
0
1
0
0
1
0
0
2
0
0
2
1
0
1
0
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
SW
16
0.6
SW
16
0.6
SW
15
0.6
SW
15
0.6
SW
14
0.6
SW
14
1.1
NW
8
1.1
NW
8
1.4
NW
6
0.6
SW
14
1.6
NW
7
2
NNW
7
1.7
NW
7
1.9
NW
7
2
NNW
7
1.6
NW
7
1.5
NW
7
0.9
NW
6
0.6
NW
10
1
NW
9
0.9
NW
9
Wave Graph
Metric surfscale
Energy kJ
203
201
149
134
132
140
167
157
139
157
230
395
276
394
418
251
198
70
63
166
132
Wind (km/h)
10
NNW
10
N
5
NE
15
NNW
15
N
5
NNE
10
NNW
15
N
10
NW
15
NNW
15
N
5
NNW
15
NNW
20
N
5
NW
10
NW
15
NNW
5
E
10
NW
15
N
5
ENE
Wind State
on
cross-on
cross
cross-on
cross-on
cross-on
on
cross-on
on
on
cross-on
glassy
on
cross-on
glassy
on
cross-on
glassy
on
cross-on
cross-off
High Tide
12:23PM1.49m
11:23PM1.89m
12:48PM1.57m
00:02AM1.88m
1:11PM1.66m
00:42AM1.83m
1:34PM1.75m
1:23AM1.75m
1:59PM1.83m
2:09AM1.63m
2:27PM1.91m
3:00AM1.49m
2:59PM1.97m
4:01AM1.33m
Low Tide
5:41PM0.84m
6:28AM-0.07m
6:22PM0.71m
6:57AM-0.03m
7:02PM0.58m
7:26AM0.05m
7:43PM0.45m
7:56AM0.17m
8:27PM0.32m
8:27AM0.32m
9:14PM0.21m
9:00AM0.50m
10:06PM0.13m
clear
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part cloud
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clear
clear
clear
clear
part cloud
clear
part cloud
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clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:37
6:39
6:39
6:41
6:41
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:59
7:57
7:55
7:53
7:52
7:51
7:49
 mm
Temp °C
17
18
15
14
15
13
13
14
13
14
14
14
14
14
13
14
14
14
14
15
14
Feels °C
16
17
15
12
13
12
11
12
11
12
12
12
12
12
12
13
12
14
13
13
13
  • Map Icons:
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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 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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