Harbor Entrance at Eureka Surf Break

Lat Long: 40.77° N 124.23° W

Harbor Entrance at Eureka Surf Forecast and Surf Report

Issued: 10 pm 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Harbor Entrance at Eureka sea temperature is
14.0°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 14 Sep 2026:

  • Best quality surf: Tuesday 15 Sep, 2AM (local time) - 7ft (2.2m), 8s period, NNW swell with glassy winds.
  • Most powerful swell: Tuesday 15 Sep, 11PM (local time) - 8ft (2.5m), 8s period, NNW swell with 919 kJ wave energy.
  • Next surfable swell (1★+): Monday 14 Sep, 5AM (local time) - 6ft (1.8m), 8s period with NW 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 Monday (Sep 14) at 5AM. The primary swell is predicted to be 1.8m and 8s period with a secondary swell of 0.6m 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 2.5m 8s and forecast to arrive on Tuesday (Sep 15) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 18s period and expected on Wednesday (Sep 16) at 11PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Mon 14th Sep)6ft (1.8m) 8s
Best Surf 2AM (Tue 15th Sep)7ft (2.2m) 8s
Most Powerful11PM (Tue 15th Sep)8ft (2.5m) 8s

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


The Lowdown

Alright, let’s get into it. The next couple of weeks are looking like a proper mixed bag. For the first handful of days, the wind is going to be the main issue, so don’t expect any standouts there at all. Things don't really get interesting until the second week, when the energy really starts to ramp up.

Right now, through the early part of this week, we’ve got consistent NW swell coming through at Harbor Entrance at Eureka (Humboldt), but it’s all blown out by a cross-onshore breeze. Monday morning the swell is 6ft from the NW with a short period of 8 seconds, and heaps of chop thanks to that wind. The combined energy is sitting at 572, but the quality is just not there for a good surf. Tuesday and Wednesday see the swell size creep up a bit, hitting around 7ft to 7ft, but again, that onshore wind kills the potential. The one highlight is Wednesday morning when the wind goes offshore, but the swell is 5ft from the NW with an 8-second period, and the conditions are described as "unknown" – a bit of a gamble. I’d leave the board on the car for those sessions.

Thursday the swell backs off a little to 6ft, but we still have that light cross-onshore wind making it bumpy. Friday the 18th is a real drop-off – swell bottoms out to 2ft from the SW with a very long period of 19 seconds. That kind of period at a beach/harbormouth setup like this can be tricky; it might break too straight for any decent shape. Energy is low too at 471.

The weekend, the 19th and 20th, is flat with tiny SW swell holding around 2ft to 3ft. It’s marginal at best, and not worth getting wet for unless you’re really desperate.

Now, here’s where it gets interesting. Starting Monday the 21st, we see a serious spike. That NW swell jumps back up to 7ft Monday morning, and the energy shoots up to 875. It builds all day, hitting 8ft by the afternoon with an energy of 1383. The wind is still cross-onshore, but it’s light, so the chop isn’t too bad. This is the first proper standout. The direction is exactly from the optimum NW, and while it’s not glassy, it’s the best combination of size and energy we’ve seen. Tuesday the 22nd is the absolute standout of the whole forecast. The morning sees 8ft from the NW with a 9-second period, and an energy of 1423. The afternoon is even bigger, at 7ft from the NNW, but the energy hits 1652 – the highest of the entire run. The wind is light cross-onshore, so it’ll be a bit bumpy, but this is solid, powerful surf. At that size, over 8ft, it’s strictly for experts. If you are a beginner, stay well clear.

After that peak, things settle down. Wednesday the 23rd is still okay, with 6ft from the NW and light cross-shore wind. The energy drops back to the low 500s. Thursday the 24th fades to 4ft from the WNW, and it’s pretty weak.

Friday the 25th is the second real standout of the period, and a very different vibe. The swell is down to 4ft from the WNW with a 9-second period, and the energy is only 203. But – and this is a big but – the wind is glassy. Absolutely glassy. And the conditions are described as "expect good surf conditions." For a spot that’s been battered by onshores, this is a rare moment of pure, clean, user-friendly surf. The water temperature is about average for the time of year, so nothing unusual there. This is the one for the longboard or a fun mid-length. The crowd profile is listed as "sometimes," so you might have some company, but that glassy surface will make it all worthwhile.

Saturday the 26th is back to small and messy with cross-shore wind. Sunday the 27th brings a bit of a NW swell back, but it’s short period and cross-onshore again.

Monday the 28th morning is another glassy session, with 4ft from the NW and an energy of 364. The conditions are "expect good surf conditions" again. This is a solid morning session for anyone, especially if you missed the Friday glass-off. The afternoon on the 28th gets strong cross-offshore wind, but it’s tiny at 2ft, so not really for surfing.

Right, so the real choices are: Tuesday the 22nd for the heavy crew – big NW groundswell, expert-only territory, heaps of energy, but a bit bumpy. And Friday the 25th morning for the clean, glassy, user-friendly waves with a good long period – that’s the one to set your alarm for.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 15°C on Wed afternoon, min 12°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 15°C on Thu morning, min 12°C on Thu night). Wind will be generally light.

Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
1
0
4
2
0
4
2
2
3
2
1
1
0
1
2
1
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
NW
9
1.7
NW
8
2
NW
7
2.2
NNW
8
2.1
NW
8
2.1
NNW
8
2.5
NNW
8
1.6
NW
8
2
NW
8
2.2
NW
8
1.8
NW
8
1.6
NW
8
1.4
NW
8
0.6
SW
19
0.7
SW
19
0.6
SW
19
1.5
NNW
8
0.7
SW
18
0.8
SW
18
Wave Graph
Metric surfscale
Energy kJ
359
355
407
590
503
504
897
306
465
632
418
322
250
236
369
236
264
307
370
Wind (km/h)
5
ENE
15
NNW
20
N
5
SSE
10
NNW
20
N
5
NE
10
NW
10
NNW
10
SSE
5
WNW
5
W
5
NE
10
NNW
15
N
5
SSE
10
NNW
10
NNW
5
SSE
Wind State
glassy
cross-on
cross-on
glassy
cross-on
cross-on
glassy
on
cross-on
off
cross-on
cross-on
cross
cross-on
cross-on
off
on
cross-on
cross-off
High Tide
2:31AM1.57m
2:20PM1.93m
3:21AM1.42m
2:50PM1.87m
4:18AM1.29m
3:23PM1.79m
5:27AM1.19m
4:04PM1.71m
6:53AM1.14m
4:58PM1.62m
8:19AM1.16m
6:09PM1.58m
Low Tide
8:32PM0.12m
8:23AM0.52m
9:16PM0.11m
8:56AM0.70m
10:02PM0.14m
9:32AM0.87m
10:54PM0.19m
10:13AM1.02m
11:53PM0.25m
11:07AM1.13m
1:01AM0.28m
12:22PM1.19m
2:10AM0.26m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:56
6:58
6:58
7:00
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:28
7:25
7:23
7:22
7:21
7:19
 mm
Temp °C
14
14
14
13
14
14
13
14
15
14
15
15
14
14
14
13
15
15
13
Feels °C
11
11
11
11
13
11
12
13
13
15
14
14
14
13
12
13
14
14
12
  • 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
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Harbor Entrance at Eureka:

join our community of surf reporters

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 Harbor Entrance at Eureka 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.


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.

Nearest locationNearest