Swell Intel

Moonstone beach Surf Forecast, Northern California

Northern California

Little River State Beach1-2ftTrinidad State Beach2-3ftCollege Cove1-2ft
Moonstone beach surf spot

Current Conditions

Fair
Wave Height
2-3ft
knee to waist high
Swell Period
14.25s
Wind
4mph
W / Gusts 4mph
Conditions
Fair
Active Swells
Primary
2.6ft @ 8sNW
Secondary
0.9ft @ 13sWNW
Tertiary
0.9ft @ 14sWNW

Daily Forecast

3 of 5 days
Tue, Mar 312-3ft
Fair
6am9am12pm3pm
Wed, Apr 13-4ft
Poor

Afternoon is the play — morning is only poor at 1-2ft. Later in the day looks more promising — 2-3ft and poor - fair.

6am9am12pm3pm
8s NW|5-12mph SSW
Thu, Apr 29-10ft
Poor - Fair

First light looks cleanest — 7-8ft on WSW swell at 13s with 14mph out of the WNW. Conditions go downhill through the afternoon.

6am9am12pm3pm
11s WNW|8-14mph W
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Sat
5ft
Swell building Sat, Apr 4Good

8s period — conditions are improving beyond your forecast

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Forecast Charts

Moonstone beach Surf Spot Guide

Break
Beach
Bottom
Sand
Level
Beginner
Crowd
Light
Best Swell
W
Best Wind
E
Season
Fall

Moonstone Beach is one of the few genuinely beginner-friendly surf spots in Humboldt County, with a wide flat beach and sandy bottom producing mellow waves. Despite the name — moonstones and agates are found on the beach itself, not in the surf zone. A local surf camp operates here, making it one of the few places in far NorCal where newcomers can safely learn. Even here, cold water requires a thick wetsuit, and shark awareness is essential in the Red Triangle.

Cold waterSharksRip currentsUrchins

Wave heights shown are breaking wave heights — the actual rideable wave size at this spot.

Moonstone beach Surf Forecast FAQ

What is the current surf forecast for Moonstone beach?
The current wave height at Moonstone beach is 2-3ft with a 14.25s swell period. Wind is W at 4mph. Conditions are rated Fair.
How accurate is the Moonstone beach surf forecast?
Our Moonstone beach forecast uses NOAA GFS and other weather models combined with spot-specific bathymetry to calculate breaking wave heights. Short-range (1-3 day) forecasts are most reliable. Extended forecasts show general trends.
What is the breaking wave height at Moonstone beach?
The current breaking wave height at Moonstone beach is 2-3ft, produced by a 2.6ft NW primary swell at 8s, a 0.9ft WNW secondary swell at 13s, a 0.9ft WNW tertiary swell at 14s. Breaking wave height is the actual rideable wave size at the shore — calculated from offshore swell data using this spot's coastal bathymetry — not the raw buoy reading.
When is the best time to surf Moonstone beach?
Based on the current 5-day forecast, the best window to surf Moonstone beach is Friday from 6 AM to 9 AM with 6ft waves, a 11.15s swell period, and conditions rated Very Good. Check the hourly forecast for updates as conditions can shift.