Surf Forecasts:
Harbor Entrance at Eureka surf forecast from 17 Jun 2026:
- Best quality surf: Wednesday 17 Jun, 8PM (local time) - 10ft (3.0m), 9s period, NNW swell with cross-offshore winds.
- Most powerful swell: Thursday 18 Jun, 2AM (local time) - 10ft (3.0m), 10s period, NNW swell with 1,883 kJ wave energy.
- Next surfable swell (1★+): Wednesday 17 Jun, 8PM (local time) - 10ft (3.0m), 9s period with NNW 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 (Jun 17) at 8PM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 1.1m and 18s. 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 16 days are 3.0m 10s and forecast to arrive on Thursday (Jun 18) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 15s period and expected on Saturday (Jun 20) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 17th Jun) | 10ft (3.0m) 9s |
| Best Surf | 8PM (Wed 17th Jun) | 10ft (3.0m) 9s |
| Most Powerful | 2AM (Thu 18th Jun) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Harbor Entrance at Eureka over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 14°C on Fri morning, min 10°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 14°C on Mon afternoon, min 10°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NNW 9 | NNW 9 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 9 | NNW 8 | NW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1014 | 1169 | 1883 | 1242 | 923 | 755 | 695 | 604 | 725 | 578 | 627 | 812 | 834 | 635 | 815 | 541 | 398 | 322 | 330 | 469 | 1144 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-on | cross | cross-off | cross | cross-on | cross | on | cross-on | on | cross-on | cross-on | cross-off | on | on | glassy | cross-on | on | glassy |
High Tide | 3:24PM1.60m | 2:03AM2.16m | 4:12PM1.65m | 2:59AM1.95m | 4:59PM1.71m | 4:01AM1.70m | 5:46PM1.77m | 5:11AM1.45m | 6:31PM1.83m | 6:31AM1.26m | 7:15PM1.89m | 7:58AM1.15m | 7:57PM1.92m | ||||||||
Low Tide | 8:43AM-0.60m | 8:27PM0.96m | 9:31AM-0.46m | 9:31PM0.92m | 10:17AM-0.27m | 10:39PM0.86m | 11:03AM-0.04m | 11:52PM0.76m | 11:49AM0.20m | 1:06AM0.62m | 12:35PM0.43m | 2:15AM0.45m | 1:24PM0.65m | 3:16AM0.27m | |||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — |
 | — | 8:50 | — | — | 8:50 | — | — | 8:51 | — | — | 8:51 | — | — | 8:51 | — | — | 8:51 | — | — | 8:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 13 | 13 | 13 | 12 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 12 | 11 | 13 | 14 | 13 | 13 | 13 | 12 |
Feels °C | 11 | 10 | 11 | 12 | 11 | 11 | 10 | 10 | 13 | 10 | 9 | 8 | 9 | 9 | 9 | 11 | 13 | 12 | 12 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | NNW 9 | NNW 9 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 10 | NNW 10 | SW 15 | SSW 16 | SW 16 | NNW 8 | NNW 9 | NNW 8 | NW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 |
| kJ | 1014 | 1169 | 1883 | 1242 | 923 | 755 | 695 | 604 | 725 | 578 | 503 | 447 | 255 | 635 | 815 | 541 | 398 | 322 | 330 | 469 | 1144 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | S 12 | SW 13 | SW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 16 | SSW 16 | SSW 13 | SSW 19 |
| kJ | 628 | 686 | 781 | 596 | 432 | 421 | 395 | 429 | 248 | 245 | 42 | 62 | 79 | 264 | 268 | 264 | 178 | 268 | 171 | 116 | 289 |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SSW 14 | S 14 | S 14 | S 13 | S 13 | S 12 | S 12 | SSW 18 | SSW 18 | WNW 10 | SW 20 | SSW 20 | SW 20 | SW 18 | SSW 18 | SSW 18 | SSW 13 | SSW 13 | SSW 20 | SSW 15 |
| kJ | 198 | 215 | 203 | 140 | 125 | 123 | 113 | 76 | 273 | 174 | 20 | 100 | 149 | 97 | 155 | 209 | 121 | 114 | 114 | 216 | 142 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NNW 9 | NNW 9 | NNW 9 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 627 | 812 | 834 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 112 | 83 | 0 | 113 | 83 | 0 | 113 | 83 | 41 | 112 | 467 | 4 | 324 | 109 | 0 | 112 | 83 | 0 | 173 | 94 | 0 |
Best forecast wave conditions in Humboldt County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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