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Harbor Entrance at Eureka Surf Forecast
/ CAL – Humboldt (25 breaks) / California (404 breaks) /
Surf Forecasts:
Harbor Entrance at Eureka surfForecast / CAL – Humboldt / USA
12 Day Weather and Surf, issued 10 am Wednesday 15 Oct 2025 PDT
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 Wednesday (Oct 15) at 8PM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 1.1m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Harbor Entrance at Eureka in the next 12 days are 4.5m 18s and forecast to arrive on Wednesday (Oct 22) at 5AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 13s period and expected on Thursday (Oct 16) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 15th Oct) | 3ft (0.9m) 14s |
| Best Surf | 11PM (Tue 21st Oct) | 11ft (3.5m) 19s |
| Most Powerful | 5AM (Wed 22nd Oct) | 15ft (4.5m) 18s |
Table - best surf conditions forecast for Harbor Entrance at Eureka over the next 12 days.
Short Range Forecast Mostly dry. Very mild (max 14°C on Wed morning, min 10°C on Thu morning). Wind will be generally light. | Days 3-6 Weather Summary Moderate rain (total 13mm), heaviest on Sun morning. Very mild (max 15°C on Sun afternoon, min 10°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 15 | 14 | 16 | 14 | 15 | 8 | 14 | 20 | 17 | 16 | 15 | 14 | 13 | 16 | 14 | 13 | 13 | 12 | 11 | 21 | 18 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 443 | 437 | 229 | 419 | 522 | 522 | 379 | 500 | 2715 | 5081 | 3814 | 2265 | 1777 | 8738 | 6964 | 4981 | 3916 | 2947 | 1326 | 3807 | 10941 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- off | cross- on | cross- on | glass | cross- on | cross- on | off | on | glass | off | cross- off | on | glass | cross- on | cross- on | cross | cross- on | cross- on | glass |
High Tide / height (m) | 8:55AM 1.50 | 7:51PM 1.65 | 9:39AM 1.61 | 9:04PM 1.62 | 10:17AM 1.72 | 10:06PM 1.62 | 10:49AM 1.81 | 10:59PM 1.60 | 11:17AM 1.87 | 11:47PM 1.58 | 11:42AM 1.91 | 12:31AM 1.55 | 12:06PM 1.92 | 1:13AM 1.51 | |||||||
Low Tide / height (m) | 2:17PM 1.00 | 3:00AM 0.07 | 3:28PM 0.81 | 3:50AM 0.14 | 4:24PM 0.60 | 4:32AM 0.23 | 5:11PM 0.41 | 5:09AM 0.34 | 5:51PM 0.24 | 5:42AM 0.47 | 6:27PM 0.11 | 6:13AM 0.60 | 7:01PM 0.01 | ||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
| Sunrise | 7:26 | - | - | 7:28 | - | - | 7:28 | - | - | 7:31 | - | - | 7:31 | - | - | 7:33 | - | - | 7:33 | - | - |
| Sunset | - | 6:37 | - | - | 6:35 | - | - | 6:34 | - | - | 6:31 | - | - | 6:30 | - | - | 6:29 | - | - | 6:28 | - |
 | |  | | |  | | | | | | |  | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | 6 | 4 | 3 | - | - | - | - | - | - |
| Temp. °C | 14 | 14 | 13 | 11 | 12 | 12 | 13 | 14 | 12 | 14 | 14 | 13 | 14 | 15 | 13 | 12 | 13 | 12 | 12 | 12 | 12 |
| Feels °C (?) | 12 | 11 | 12 | 9 | 8 | 9 | 11 | 11 | 11 | 12 | 13 | 10 | 13 | 11 | 10 | 10 | 9 | 8 | 9 | 8 | 10 |
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for CAL - Humboldt
The wind is still cross-off at Harbor Entrance at Eureka (light winds from the S at BUOY-NJLC1 1 km from Harbor Entrance at Eureka). 1.5m 8s swell from the NW with a 0.8m 14s groundswell from the WNW. 2 swells combining to make bigger set waves.
1 h 0 min ago
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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 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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