Surf Forecasts:
Harbor Entrance at Eureka surf forecast from 30 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 2AM (local time) - 8ft (2.5m), 9s period, NNW swell with glassy winds.
- Most powerful swell: Monday 3 Aug, 11PM (local time) - 13ft (4.0m), 10s period, NNW swell with 2,749 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 11PM (local time) - 2ft (0.6m), 15s period with SW 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 Thursday (Jul 30) at 11PM. The primary swell is predicted to be 0.6m and 15s period with a secondary swell of 1.1m and 6s. 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 4.0m 10s and forecast to arrive on Monday (Aug 03) 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 1.1m 16s period and expected on Thursday (Jul 30) at 5AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 30th Jul) | 2ft (0.6m) 15s |
| Best Surf | 2AM (Wed 5th Aug) | 8ft (2.5m) 9s |
| Most Powerful | 11PM (Mon 3rd Aug) | 13ft (4.0m) 10s |
Table - best surf conditions forecast for Harbor Entrance at Eureka over the next 16 days.
The Lowdown
Rusty here, checking in on the Eureka Harbor Entrance scene. Gotta be honest—this is a pretty grim outlook for the next couple of weeks.
We’ve got a solid, powerful NW and NNW swell rolling in, but the wind is just not your friend. It’s mainly a cross-onshore breeze, day in and day out, which is going to trash most of those waves. The wave energy is strong to very strong, with combined energy readings well into the hundreds and thousands, but it means nothing when it’s all choppy and blown out.
The only windows that might be worth a look are in the second week. Thursday morning, August 13th, there’s a chance: a 2.1m swell from the NNW, period of 8 seconds, combined energy still high (1058). The wind is light and onshore, which might keep it from being totally ugly. It’s exposed to the NW, and the swell is a decent fit. This is for experts only—over 1.5m and nearly at 2.5m, it’s big and demanding. Later on Thursday afternoon, August 13th, the swell drops to 1.9m from the NNW, the combined energy is still strong (936), and the wind is light and onshore. Crowds can show up sometimes.
The water temp doesn’t show any major anomaly from the data, so it’s feeling typical for this time of year around the harbor mouth.
Remember, every single call in the whole 16 days is either marginal or poor. There’s no solid, clean, rippable surf. For a beach/harbor spot like this, with heavy swell and messy wind, it’s probably a better day for kite surfing than regular surfing, honestly.
If you’re itching to paddle, the morning of August 13th is your best bet, but it’s a long shot. Otherwise, save the energy.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Sat afternoon, min 12°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Mon afternoon, min 12°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | ||||||||||||||
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) | NW 8 | SW 16 | NW 8 | NW 7 | NW 6 | NW 9 | WNW 8 | WNW 8 | NW 8 | NNW 7 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 229 | 349 | 211 | 88 | 96 | 199 | 137 | 128 | 154 | 682 | 770 | 1162 | 2085 | 1704 | 2181 | 2028 | 1275 | 1033 | 1177 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross-on | glassy | on | cross-on | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy |
High Tide | 00:14AM1.95m | 2:04PM1.51m | 00:50AM1.91m | 2:29PM1.58m | 1:29AM1.83m | 2:55PM1.65m | 2:11AM1.70m | 3:21PM1.73m | 2:59AM1.55m | 3:51PM1.81m | 3:57AM1.37m | 4:26PM1.89m | |||||||
Low Tide | 7:33AM-0.18m | 7:19PM0.90m | 8:03AM-0.14m | 8:01PM0.81m | 8:33AM-0.05m | 8:46PM0.72m | 9:04AM0.08m | 9:35PM0.61m | 9:36AM0.24m | 10:30PM0.48m | 10:11AM0.44m | 11:31PM0.36m | |||||||
 |  | |  | | | | | |  | | | | | | | | | | |
 | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — |
 | 8:35 | — | 8:34 | — | — | 8:32 | — | — | 8:31 | — | — | 8:30 | — | — | 8:30 | — | — | 8:29 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 14 | 14 | 14 | 15 | 14 | 15 | 16 | 14 | 13 | 15 | 14 | 15 | 16 | 15 | 15 | 16 | 15 |
Feels °C | 11 | 11 | 11 | 13 | 12 | 14 | 13 | 13 | 14 | 10 | 11 | 11 | 11 | 12 | 11 | 11 | 12 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | NW 8 | SW 16 | SSW 16 | NW 7 | SW 14 | SW 14 | WNW 8 | WNW 8 | SSW 14 | SSW 14 | SW 14 | SSW 13 | SW 13 | SW 13 | SW 13 | SW 16 | SW 16 | NNW 9 | NNW 9 |
| kJ | 229 | 349 | 425 | 88 | 214 | 167 | 137 | 128 | 213 | 129 | 92 | 70 | 44 | 43 | 42 | 65 | 86 | 1033 | 1177 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | S 16 | S 16 | SSW 15 | S 15 | S 14 | SSW 14 | S 13 | SW 20 | S 12 | S 12 | SW 18 | SW 18 | SW 17 | SW 16 | SSW 12 | SSW 12 | SW 15 | SW 15 |
| kJ | 441 | 132 | 81 | 339 | 110 | 103 | 133 | 90 | 15 | 25 | 25 | 49 | 49 | 45 | 41 | 15 | 14 | 78 | 76 |
Swell 3 Height (m) Direction Period (s) | S 18 | SSW 11 | — | N 6 | SW 8 | — | N 5 | SW 14 | SSW 13 | WSW 19 | SW 18 | S 12 | S 12 | S 10 | S 12 | S 12 | S 15 | SSW 12 | SSW 12 |
| kJ | 158 | 11 | — | 34 | 3 | — | 13 | 102 | 58 | 37 | 13 | 25 | 24 | 8 | 11 | 3 | 17 | 14 | 14 |
Wind waves Height (m) Direction Period (s) | — | NW 8 | NW 8 | — | NW 6 | NW 9 | — | NNW 4 | NW 8 | NNW 7 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | — | — |
| kJ | — | 244 | 211 | — | 96 | 199 | — | 7 | 154 | 682 | 770 | 1162 | 2085 | 1704 | 2181 | 2028 | 1275 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 18 | 112 | 464 | 0 | 173 | 464 | 0 | 287 | 464 | 109 | 292 | 465 | 18 | 324 | 292 | 18 | 224 | 109 | 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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