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Big Lagoon surfForecast / CAL – Humboldt / USA
12 Day Weather and Surf, issued 4 am Saturday 13 Sep 2025 PDT
Best Forecast Surf Conditions for Big Lagoon this week:
The surf forecast for Big Lagoon over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 13) at 11AM. The primary swell is predicted to be 1.5m and 12s period with a secondary swell of 0.6m and 14s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Big Lagoon in the next 12 days are 3.5m 10s and forecast to arrive on Thursday (Sep 18) at 8PM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sat 13th Sep) | 5ft (1.5m) 12s |
| Best Surf | 5AM (Thu 18th Sep) | 10ft (3.0m) 9s |
| Most Powerful | 8PM (Thu 18th Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Big Lagoon over the next 12 days.
Short Range Forecast Light rain (total 2mm), mostly falling on Sat night. Very mild (max 19°C on Sun morning, min 14°C on Sat morning). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 20°C on Tue morning, min 14°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||
| 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) (?) | 12 | 12 | 11 | 11 | 11 | 8 | 10 | 9 | 8 | 12 | 11 | 10 | 13 | 10 | 9 | 9 | 10 | 10 | 9 | 9 | 9 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 677 | 677 | 423 | 534 | 785 | 352 | 459 | 145 | 181 | 86 | 180 | 250 | 154 | 209 | 1185 | 1251 | 1915 | 1212 | 868 | 609 | 582 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- off | on | cross- on | glass | on | cross- on | glass | cross | cross | cross- on | on | cross- on | glass | on | cross- on | glass | on | on | cross- off |
High Tide / height (m) | 4:10PM 2.65 | 6:36AM 1.90 | 5:15PM 2.56 | 8:07AM 1.94 | 6:32PM 2.49 | 9:16AM 2.03 | 7:50PM 2.47 | 10:05AM 2.13 | 8:59PM 2.49 | 10:43AM 2.24 | 9:57PM 2.51 | 11:15AM 2.33 | 10:48PM 2.51 | ||||||||
Low Tide / height (m) | 9:52AM 1.39 | 11:40PM 0.45 | 10:57AM 1.54 | 12:57AM 0.46 | 12:26PM 1.61 | 2:10AM 0.45 | 1:57PM 1.56 | 3:11AM 0.42 | 3:10PM 1.43 | 4:02AM 0.41 | 4:06PM 1.27 | 4:44AM 0.44 | 4:54PM 1.10 | ||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||
| Sunrise | 6:54 | - | - | 6:54 | - | - | 6:56 | - | - | 6:56 | - | - | 6:58 | - | - | 6:58 | - | - | 7:00 | - | - |
| Sunset | - | 7:29 | - | - | 7:27 | - | - | 7:25 | - | - | 7:23 | - | - | 7:22 | - | - | 7:21 | - | - | 7:19 | - |
 |  |  |  | |  | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 18 | 17 | 19 | 18 | 15 | 19 | 19 | 16 | 20 | 20 | 15 | 18 | 18 | 14 | 18 | 18 | 15 | 18 | 18 | 14 |
| Feels °C (?) | 17 | 18 | 18 | 20 | 16 | 13 | 17 | 18 | 16 | 19 | 19 | 15 | 16 | 15 | 14 | 16 | 15 | 15 | 17 | 17 | 14 |
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Recent Eyeball Surf Reports for CAL - Humboldt
Continuing clean conditions at Big Lagoon (calm at Arcata/Eureka Airport 20 km from Big Lagoon). 1.5m 13s groundswell from the WNW with a 0.4m 9s swell from the W. 2 swells combining to make bigger set waves.
20 km away, 1 h 51 min ago
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Big Lagoon 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 Big Lagoon Surf forecast
The above surf forecast table for Big Lagoon provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Big Lagoon can be found by selecting the local surf guide option on the grey menu. Our Big Lagoon 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 (Big Lagoon) 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 Big Lagoon 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.
Big Lagoon is 24 km (15 miles) from McKinleyville. If you plan a vacation in Humboldt County, look for hotels and other accommodation in McKinleyville. McKinleyville has rooms for a wide range of budgets as well as car hire and transport links.
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