Surf Forecasts:
Harbor Entrance at Eureka surf forecast from 2 Aug 2026:
- Best quality surf: Monday 3 Aug, 5AM (local time) - 10ft (3.0m), 9s period, NNW swell with glassy winds.
- Most powerful swell: Sunday 2 Aug, 11PM (local time) - 13ft (4.0m), 9s period, NNW swell with 2,627 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 5AM (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 Monday (Aug 03) at 5AM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 0.3m and 18s. 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 4.0m 9s and forecast to arrive on Sunday (Aug 02) 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 Saturday (Aug 08) at 8PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 3rd Aug) | 10ft (3.0m) 9s |
| Best Surf | 5AM (Mon 3rd Aug) | 10ft (3.0m) 9s |
| Most Powerful | 11PM (Sun 2nd Aug) | 13ft (4.0m) 9s |
Table - best surf conditions forecast for Harbor Entrance at Eureka over the next 16 days.
The Lowdown
Alright, folks, Rusty here again. Let’s break down the next couple of weeks at Harbor Entrance at Eureka.
The wind is the main story here, and it’s a rough one for most of the stretch. A lot of cross-onshore breeze will keep things choppy. The first few days are a total write-off, but we start to see a little more hope as the week of August 4th rolls in. Water temp is about average for this time of year, nothing wild.
The standout window is Tuesday morning, August 4th, through to Thursday morning, August 6th. The winds turn light and onshore or just light cross-onshore, and the swell sits around 5 ft to 6 ft. The energy is moderate (891 to 530 in the energy readings). It’s marginal, but with light winds, you’ll find cleaner lines than the days before. The best call is probably Tuesday morning, Aug 4th, with a 8 ft swell from the NNW, period 8s, and a light breeze – that’s the most workable of the lot. This break is a beach/harbor mouth setup, so it’s exposed and can handle the NW swell, but it’s more for advanced surfers given the size and the occasional cross-onshore kick.
After that, from Thursday afternoon through to the end of the first week, it’s mostly poor surf conditions with moderate to fresh cross-onshore winds, 5 ft to 6 ft swell, and energy dropping below 400. It’s pretty average for this area.
The second week of the forecast, from August 9th, sees a pulse of bigger swell. Sunday Aug 9th has a 13 ft swell from the NNW with a 10s period, moderate energy (2680) – but it’s cross-onshore and choppy. That’s expert-only territory, and even then, the wind is rubbish. The week after stays marginal at best, with light winds on some mornings, but the swell is small, around 5 ft to 6 ft, and the energy remains moderate. Nothing really stands out as a proper session.
Look, if you’re keen, aim for the morning of Tuesday Aug 4th or Wednesday Aug 5th during the first week. After that, you’re rolling the dice. The long-range stuff around Aug 15-16th has a bit of a mixed bag, with a 6 ft swell from the NNW on Saturday morning, but the wind is light and onshore, so it might clean up. The energy is moderate (822). Just don’t get your hopes too high.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Mon morning, min 12°C on Sat night). Winds decreasing (fresh winds from the N on Sun afternoon, calm by Mon night). | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Wed morning, min 13°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||
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 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NNW 8 | NNW 7 | NNW 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 1161 | 1030 | 1847 | 2074 | 1463 | 1675 | 1416 | 806 | 663 | 553 | 428 | 373 | 268 | 221 | 221 | 169 | 287 | 302 | 439 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | on | on | glassy | cross-on | on | on | on | cross-on | cross-on | on | cross-on | cross-off |
High Tide | 2:11AM1.70m | 3:21PM1.73m | 2:59AM1.55m | 3:51PM1.81m | 3:57AM1.37m | 4:26PM1.89m | 5:09AM1.20m | 5:09PM1.95m | 6:41AM1.09m | 6:00PM2.01m | 8:24AM1.09m | 7:02PM2.05m | |||||||
Low Tide | 8:46PM0.72m | 9:04AM0.08m | 9:35PM0.61m | 9:36AM0.24m | 10:30PM0.48m | 10:11AM0.44m | 11:31PM0.36m | 10:51AM0.64m | 00:39AM0.22m | 11:41AM0.84m | 1:51AM0.06m | 12:44PM0.99m | 3:00AM-0.11m | ||||||
 | | |  | | | | | | | |  |  | | | | | | | |
 | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — |
 | 8:31 | — | 8:30 | — | — | 8:30 | — | — | 8:29 | — | — | 8:28 | — | — | 8:27 | — | — | 8:24 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 15 | 14 | 16 | 16 | 15 | 16 | 16 | 15 | 17 | 17 | 15 | 16 | 16 | 14 | 15 | 15 | 14 |
Feels °C | 10 | 10 | 11 | 10 | 13 | 13 | 14 | 15 | 15 | 15 | 17 | 17 | 15 | 16 | 15 | 13 | 14 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SW 14 | SSW 13 | SSW 13 | SW 13 | SW 13 | NNW 9 | NNW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | SW 13 | SW 13 | NNW 8 |
| kJ | 110 | 92 | 70 | 68 | 44 | 43 | 1416 | 806 | 663 | 553 | 428 | 373 | 268 | 221 | 221 | 169 | 83 | 80 | 439 |
Swell 2 Height (m) Direction Period (s) | SW 19 | S 12 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 18 | SSW 18 | SW 13 |
| kJ | 15 | 25 | 49 | 49 | 45 | 41 | 41 | 85 | 79 | 76 | 97 | 96 | 68 | 88 | 84 | 82 | 80 | 127 | 78 |
Swell 3 Height (m) Direction Period (s) | WSW 19 | SW 18 | S 12 | — | S 13 | S 12 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SW 11 | SSW 11 | S 13 | SW 20 | SSW 19 | SW 18 | S 12 | S 12 | SW 17 |
| kJ | 37 | 13 | 25 | — | 13 | 11 | 24 | 14 | 14 | 14 | 5 | 12 | 31 | 60 | 37 | 51 | 11 | 11 | 100 |
Wind waves Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | — | — | — | — | — | — | — | — | — | — | NNW 8 | NNW 7 | — |
| kJ | 1161 | 1030 | 1847 | 2074 | 1463 | 1675 | — | — | — | — | — | — | — | — | — | — | 287 | 302 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 27 | 324 | 806 | 18 | 251 | 83 | 0 | 83 | 112 | 0 | 173 | 83 | 4 | 83 | 112 | 18 | 112 | 84 | 0 |
Best forecast wave conditions in Humboldt County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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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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