Surf Forecasts:
Harbor Entrance at Eureka surf forecast from 9 Jul 2026:
- Best quality surf: Monday 13 Jul, 5AM (local time) - 5ft (1.6m), 8s period, NW swell with glassy winds.
- Most powerful swell: Thursday 9 Jul, 11PM (local time) - 8ft (2.4m), 8s period, NNW swell with 750 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 5AM (local time) - 5ft (1.6m), 8s period with NW 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 (Jul 13) at 5AM. The primary swell is predicted to be 1.6m and 8s period with a secondary swell of 1.7m and 7s. 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 2.4m 8s and forecast to arrive on Thursday (Jul 09) at 11PM. Winds are predicted to be 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 Wednesday (Jul 08) at 8PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 13th Jul) | 5ft (1.6m) 8s |
| Best Surf | 5AM (Mon 13th Jul) | 5ft (1.6m) 8s |
| Most Powerful | 11PM (Thu 9th Jul) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Harbor Entrance at Eureka over the next 16 days.
Alright folks, Rusty here. Let's have a look at what's in store for the Harbor Entrance at Eureka.
Right off the bat, I gotta be straight with you – the next week and a half is looking pretty grim. We’ve got a long stretch of poor conditions ahead. From Wednesday, the 8th of July, right through to around the 15th, it’s a real struggle. The wind is mostly a nasty cross-onshore breeze, and the swell is just not cooperating. The water is also a bit colder than normal for this time of year, sitting at 53°F.
The first real glimmer of hope doesn't show up until Thursday, the 16th of July. It’s still marginal, but the energy is starting to build. By Friday morning, the 17th, we’re looking at a solid 10ft NW swell (9-second period) with light offshore winds, but the conditions are still described as marginal. That's a big, powerful wave though – the combined energy is a whopping 1921 (strong to very strong). That’s expert territory for sure, and that harbor mouth can get pretty wild. The crowds are sometimes a thing here, so keep your head on a swivel.
The standout window, and the best we’ve got on offer, is shaping up for Saturday, the 18th of July. The morning session has a 8ft NNW swell (9-second period) with a light cross-onshore breeze and a combined energy of 1681. The afternoon cleans up with a 8ft NNW swell and light offshore winds. The energy is still massive (1730), and the wave quality is the best we’ll see in the whole forecast. It’s still big and powerful, so only for the experienced crew who know the lineup.
After that, the swell slowly drops through the 19th and 20th, but the wind stays a bit messy, keeping things in the "marginal to poor" category. By the 21st, we’re back to small, weak surf with no redeeming features.
The long-range call for the 23rd of July shows a slight uptick in swell to 5ft from the NW, but it's a week and a half out, so don't get your hopes up too high just yet.
So, to wrap it up: the first week is a write-off. The real action, if you're brave and experienced, is on the 17th and 18th of July. That's your window.
Rusty.
Short Range ForecastMostly dry. Very mild (max 13°C on Wed afternoon, min 11°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 13°C on Sat morning, min 10°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||
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) | NW 10 | NW 7 | NNW 8 | NW 8 | NW 8 | NNW 8 | SW 15 | SW 15 | NW 10 | NW 10 | NW 9 | NW 10 | NW 10 | NW 9 | NW 9 | NW 7 | NW 7 | NW 7 | NW 6 | NNW 6 | SW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 334 | 263 | 683 | 530 | 588 | 634 | 340 | 340 | 98 | 262 | 383 | 465 | 566 | 166 | 399 | 258 | 206 | 158 | 144 | 107 | 194 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | on | cross-on | on | on | cross-on | 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 | 6:46PM1.97m | 8:20AM1.10m | 7:35PM2.08m | 9:48AM1.16m | 8:29PM2.18m | 10:59AM1.26m | 9:25PM2.27m | 11:56AM1.37m | 10:21PM2.34m | 12:45PM1.47m | 11:17PM2.37m | 1:29PM1.55m | 00:11AM2.34m | ||||||||
Low Tide | 12:20PM0.64m | 2:16AM0.20m | 1:15PM0.82m | 3:19AM-0.05m | 2:17PM0.95m | 4:18AM-0.28m | 3:23PM1.03m | 5:13AM-0.46m | 4:27PM1.03m | 6:04AM-0.58m | 5:27PM0.99m | 6:53AM-0.62m | 6:25PM0.92m | ||||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 8:50 | — | — | 8:50 | — | — | 8:49 | — | — | 8:49 | — | — | 8:47 | — | — | 8:47 | — | — | 8:46 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 13 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 12 | 13 | 11 | 13 | 13 | 11 | 13 | 13 | 12 |
Feels °C | 9 | 11 | 10 | 9 | 9 | 9 | 9 | 10 | 11 | 10 | 10 | 9 | 9 | 10 | 8 | 10 | 10 | 9 | 10 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SW 17 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SW 15 | NW 6 | NW 6 | NW 10 | NW 9 | NW 10 | SSW 14 | NW 9 | SSW 14 | SSW 14 | SSW 14 | NW 7 | SSW 13 | SSW 13 | WNW 8 |
| kJ | 547 | 695 | 595 | 452 | 545 | 425 | 340 | 149 | 54 | 262 | 383 | 465 | 170 | 166 | 178 | 175 | 121 | 158 | 98 | 99 | 93 |
Swell 2 Height (m) Direction Period (s) | SW 15 | S 11 | SSW 19 | SSW 13 | SSW 18 | — | NW 10 | SW 15 | SSW 15 | SW 14 | SW 14 | SW 15 | W 18 | SSW 14 | WNW 17 | WNW 14 | WNW 15 | SSW 13 | WNW 14 | WNW 7 | SW 18 |
| kJ | 134 | 9 | 74 | 17 | 104 | — | 45 | 340 | 275 | 214 | 214 | 220 | 26 | 127 | 55 | 37 | 76 | 118 | 69 | 21 | 194 |
Swell 3 Height (m) Direction Period (s) | S 11 | S 8 | SSW 19 | — | — | — | — | WNW 9 | NW 10 | W 18 | W 19 | W 16 | SW 24 | W 15 | SW 21 | SW 21 | WSW 20 | SW 19 | SW 19 | W 14 | SSW 12 |
| kJ | 9 | 1 | 122 | — | — | — | — | 50 | 98 | 6 | 7 | 5 | 22 | 18 | 18 | 18 | 38 | 133 | 59 | 103 | 58 |
Wind waves Height (m) Direction Period (s) | NW 10 | NW 7 | NNW 8 | NW 8 | NW 8 | NNW 8 | NW 7 | — | N 6 | NW 5 | — | — | NW 10 | NNW 6 | NW 9 | NW 7 | NW 7 | — | NW 6 | NNW 6 | N 6 |
| kJ | 334 | 263 | 683 | 530 | 588 | 634 | 268 | — | 3 | 30 | — | — | 566 | 124 | 399 | 258 | 206 | — | 144 | 107 | 78 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 112 | 465 | 4 | 292 | 465 | 18 | 112 | 464 | 18 | 345 | 464 | 52 | 292 | 465 | 18 | 112 | 806 | 4 | 112 | 464 | 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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