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Trinidad State Beach Surf Forecast
/ CAL – Humboldt (25 breaks) / California (404 breaks) /
Surf Forecasts:
Trinidad State Beach surfForecast / CAL – Humboldt / USA
12 Day Weather and Surf, issued 4 pm Friday 17 Oct 2025 PDT
Best Forecast Surf Conditions for Trinidad State Beach this week:
The surf forecast for Trinidad State Beach over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Oct 17) at 11PM. The primary swell is predicted to be 1.6m and 18s period with a secondary swell of 1.5m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trinidad State Beach in the next 12 days are 4.5m 16s and forecast to arrive on Friday (Oct 24) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 17th Oct) | 5ft (1.6m) 18s |
| Best Surf | 11PM (Sun 19th Oct) | 13ft (4.0m) 16s |
| Most Powerful | 11AM (Fri 24th Oct) | 15ft (4.5m) 16s |
Table - best surf conditions forecast for Trinidad State Beach over the next 12 days.
Short Range Forecast Some drizzle, heaviest during Sun morning. Very mild (max 17°C on Sat morning, min 9°C on Sun night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Very mild (max 18°C on Tue morning, min 12°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 20 | 17 | 16 | 15 | 14 | 13 | 13 | 16 | 13 | 13 | 12 | 13 | 18 | 16 | 14 | 14 | 13 | 12 | 13 | 14 | 16 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 450 | 2377 | 3569 | 3331 | 2005 | 1077 | 2046 | 7848 | 3662 | 2817 | 2055 | 1729 | 3212 | 5658 | 2927 | 2079 | 1321 | 1220 | 2221 | 3887 | 10069 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | glass | glass | glass | cross | cross | cross- off | cross | cross | cross- off | cross- on | glass | glass | cross- on | glass | cross- off | cross | cross | cross- off | cross | ||
High Tide / height (m) | 9:54PM 1.74 | 10:31AM 1.94 | 10:45PM 1.74 | 10:59AM 2.01 | 11:32PM 1.73 | 11:24AM 2.05 | 12:15AM 1.72 | 11:48AM 2.08 | 12:56AM 1.70 | 12:13PM 2.08 | 1:38AM 1.68 | 12:38PM 2.07 | 2:20AM 1.63 | 1:07PM 2.03 | |||||||||
Low Tide / height (m) | 4:01PM 0.52 | 4:06AM 0.23 | 4:45PM 0.34 | 4:42AM 0.34 | 5:23PM 0.18 | 5:14AM 0.47 | 5:58PM 0.06 | 5:45AM 0.60 | 6:31PM -0.02 | 6:15AM 0.74 | 7:04PM -0.06 | 6:44AM 0.86 | 7:39PM -0.06 | 7:15AM 0.97 | |||||||||
Fri 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||
| Sunrise | - | - | 7:31 | - | - | 7:31 | - | - | 7:33 | - | - | 7:33 | - | - | 7:35 | - | - | 7:35 | - | - | 7:37 | ||
| Sunset | 6:32 | - | - | 6:30 | - | - | 6:30 | - | - | 6:28 | - | - | 6:27 | - | - | 6:25 | - | - | 6:23 | - | - | ||
 |  | | |  |  | | | | | | | | | |  |  |  | | |  | |||
Rain (mm) | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | ||
| Temp. °C | 15 | 12 | 17 | 16 | 13 | 14 | 16 | 11 | 14 | 16 | 12 | 18 | 17 | 14 | 16 | 15 | 14 | 17 | 17 | 16 | 19 | ||
| Feels °C (?) | 12 | 10 | 16 | 15 | 11 | 13 | 12 | 7 | 11 | 13 | 10 | 15 | 14 | 12 | 13 | 14 | 12 | 14 | 13 | 14 | 13 | ||
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for CAL - Humboldt
Recent cross-onshore wind has turned cross-shore at Trinidad State Beach (light winds from the NNW at Arcata/Eureka Airport 10 km from Trinidad State Beach). 1.1m 6s windswell from the NW with a 1.0m 13s groundswell from the WNW and a 0.4m 18s long period groundswell, also from the WNW. 3 swells combining to make bigger set waves.
2 h 12 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 Trinidad State Beach 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 Trinidad State Beach Surf forecast
The above surf forecast table for Trinidad State Beach provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Trinidad State Beach can be found by selecting the local surf guide option on the grey menu. Our Trinidad State Beach 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 (Trinidad State Beach) 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 Trinidad State Beach 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.
Trinidad State Beach is 14 km (9 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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