Harbor Entrance at Eureka surfForecast / CAL – Humboldt / USA

information circle12 Day Weather and Surf, issued 10 am Saturday 23 Aug 2025 PDT
Forecast update in hr  min  s Forecast update imminent
Harbor Entrance at Eureka surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Harbor Entrance at Eureka sea temperature is
14.3° C
(Which is normal for this time of year)


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

The surf forecast for Harbor Entrance at Eureka over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 24) at 2AM. The primary swell is predicted to be 1.2m and 7s 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 12 days are 2.1m 8s and forecast to arrive on Tuesday (Aug 26) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Saturday (Aug 23) at 2PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 24th Aug)4ft (1.2m) 7s
Best Surf 2AM (Mon 25th Aug)5ft (1.6m) 8s
Most Powerful 5AM (Tue 26th Aug)7ft (2.1m) 8s

Table - best surf conditions forecast for Harbor Entrance at Eureka over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Very mild (max 15°C on Sat morning, min 13°C on Sat morning). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 17°C on Thu afternoon, min 12°C on Wed night). Wind will be generally light.

Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
1
0
0
3
2
0
3
1
1
2
0
0
1
0
0
0
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
1.4
NW
1.2
NW
1.2
NNW
1.1
NNW
1.3
NW
1.6
NW
2
NW
1.9
NW
1.6
NW
1.6
NW
1.6
NW
1.8
NNW
1.6
NNW
1.5
NNW
1.2
NNW
0.9
NNW
0.7
NNW
0.5
NNW
0.5
SW
0.7
WNW
0.4
SW
Period(s) (?)77777888888887777718517
Wave
Graph
(?)Metric surfscale
Energy (?)20819818818619450166346154255252040229423414281444319646173
Wind
(km/h)
10
WNW
10
NNW
5
N
10
W
10
NNW
0
ENE
10
NW
15
N
0
W
10
NW
15
N
5
WNW
10
NW
15
N
5
SE
10
NW
10
NNE
15
N
15
NNW
15
N
5
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
glasscross-
on
onglassoncross-
on
glassoncross-
on
glassoncross-
on
offoncross-
on
cross-
on
cross-
on
cross-
on
glass
High Tide
/ height (m)
1:18PM
1.68
12:40AM
1.94
1:47PM
1.72
1:23AM
1.81
2:14PM
1.75
2:05AM
1.67
2:40PM
1.76
2:49AM
1.51
3:05PM
1.76
3:37AM
1.36
3:32PM
1.74
4:35AM
1.21
4:04PM
1.71
Low Tide
/ height (m)
6:57PM
0.65
7:31AM
-0.08
7:40PM
0.55
8:02AM
0.07
8:23PM
0.48
8:31AM
0.25
9:05PM
0.42
9:01AM
0.44
9:49PM
0.38
9:31AM
0.63
10:37PM
0.37
10:04AM
0.81
11:32PM
0.36
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Sunrise6:33--6:35--6:35--6:37--6:37--6:39--6:39--
Sunset-8:02--8:01--8:00--7:59--7:57--7:55--7:53-
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
cloud
part cloud
part cloud
part cloud
clear
Rain (mm)
---------------------
Temp. °C151513151513151514151513141513161715141514
Feels °C (?)141412141412141414141412131312151715131313
  • 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 Harbor Entrance at Eureka (calm at BUOY-NJLC1 1 km from Harbor Entrance at Eureka). 1.0m 7s swell from the NW with a 0.2m 9s swell from the WNW. 2 swells combining to make bigger set waves.

    Harbor Entrance at Eureka
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1 h 25 min ago

5 km/h
W
Clean
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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 12 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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