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Moonstone Beach Surf Forecast
/ CAL – Humboldt (25 breaks) / California (404 breaks) /
Surf Forecasts:
Moonstone Beach surfForecast / CAL – Humboldt / USA
48hr Weather and Surf, issued 10 pm Sunday 12 Oct 2025 PDT
How big are the waves at Moonstone Beach today?
The current surf forecast for Moonstone Beach at 4AM is: 1.8m 9s primary swell from a Northwest direction and 0.8m 11s secondary swell from a West-northwest direction (forecast issued at 10:00pm October 12). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Oct) | 5.5ft (1.7m) | 9s |
| Afternoon (13 Oct) | 8ft (2.4m) | 10s |
| Evening (13 Oct) | 8ft (2.5m) | 10s |
Table - waves today at Moonstone Beach. (Swell directed towards the surf break)
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||||||||
| 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 15 | 15 | 15 | 15 | 17 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 602 | 577 | 602 | 478 | 488 | 468 | 1082 | 1240 | 1351 | 1507 | 1461 | 1226 | 984 | 813 | 714 | 593 | 486 | 421 | 367 | 318 | 309 | 305 | 237 | 297 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- off | cross- off | cross | glass | glass | cross | cross- off | off | off | off | off | glass | cross- on | cross | glass | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross- on |
High Tide / height (m) | 6:22AM 1.57 | 4:55PM 1.93 | 7:37AM 1.60 | 6:19PM 1.81 | 8:37AM 1.68 | |||||||||||||||||||
Low Tide / height (m) | 11:12PM -0.12 | 11:04AM 1.11 | 12:25AM -0.02 | 12:38PM 1.07 | 1:35AM 0.04 | 2:03PM 0.92 | ||||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 7:24 | - | - | - | - | - | - | - | 7:26 | - | - | - | - | - | - | - | 7:26 | - | - | - |
| Sunset | - | - | - | - | - | - | - | 6:38 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:36 |
 |  | |  |  |  |  | | | | |  |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | 1 | 8 | 5 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 12 | 11 | 11 | 10 | 11 | 12 | 13 | 11 | 10 | 9 | 9 | 9 | 14 | 15 | 14 | 11 | 11 | 10 | 10 | 10 | 14 | 15 | 14 |
| Feels °C (?) | 11 | 12 | 9 | 8 | 6 | 10 | 10 | 10 | 8 | 7 | 6 | 6 | 7 | 12 | 13 | 12 | 10 | 10 | 7 | 7 | 7 | 12 | 13 | 13 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for CAL - Humboldt
Offshore wind reported 6 km from Moonstone Beach (light winds from the SE at Arcata/Eureka Airport 6 km from Moonstone Beach). 2.0m 10s swell from the NW which is too big for here.
1 h 28 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 Moonstone 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.
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