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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 4 pm Saturday 23 Aug 2025 PDT
How big are the waves at Moonstone Beach today?
The current surf forecast for Moonstone Beach at 5PM is: 0.5m 15s primary swell from a Southwest direction and 1.1m 7s secondary swell from a Northwest direction, 0.6m 8s secondary swell from a West-northwest direction (forecast issued at 04:00pm August 23). The wind direction is predicted to be cross-onshore.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Aug) | - | - |
| Afternoon (23 Aug) | 3.5ft (1.1m) | 7s |
| Evening (23 Aug) | 3.5ft (1.1m) | 7s |
Table - waves today at Moonstone Beach. (Swell directed towards the surf break)
Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | |||||||||||||||||||||
| 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 | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 15 | 7 | 14 | 8 | 8 | 14 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 224 | 273 | 252 | 257 | 253 | 271 | 267 | 263 | 298 | 284 | 355 | 313 | 356 | 474 | 505 | 533 | 467 | 432 | 500 | 589 | 590 | 530 | 530 | 519 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross | glass | glass | glass | glass | on | cross- on | cross- on | cross | cross | glass | glass | glass | cross- on | cross- on | cross- on | cross | glass | glass | glass | glass | on |
High Tide / height (m) | 12:56PM 1.86 | 12:27AM 2.08 | 1:26PM 1.90 | 1:09AM 1.98 | 1:54PM 1.93 | 1:52AM 1.84 | ||||||||||||||||||
Low Tide / height (m) | 6:31PM 0.55 | 7:01AM -0.11 | 7:13PM 0.46 | 7:32AM 0.05 | 7:54PM 0.40 | 8:02AM 0.23 | ||||||||||||||||||
Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:35 | - |
| Sunset | - | - | 8:02 | - | - | - | - | - | - | - | 8:01 | - | - | - | - | - | - | - | 8:00 | - | - | - | - | - |
 | | |  | | |  | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 18 | 14 | 14 | 14 | 14 | 15 | 19 | 18 | 18 | 14 | 14 | 14 | 14 | 15 | 18 | 18 | 18 | 14 | 14 | 15 | 15 | 16 | 18 |
| Feels °C (?) | 19 | 17 | 14 | 14 | 15 | 14 | 15 | 19 | 18 | 17 | 14 | 14 | 15 | 14 | 16 | 18 | 18 | 17 | 13 | 14 | 16 | 16 | 17 | 18 |
- 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
Continuing clean conditions at Moonstone Beach (calm at Arcata/Eureka Airport 6 km from Moonstone Beach). 1.1m 7s swell from the NW with a 0.5m 12s groundswell from the WSW and a 0.4m 12s groundswell from the W. 3 swells combining to make bigger set waves.
1 h 33 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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