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Russian Rivermouth Surf Forecast
/ CAL – Sonoma (10 breaks) / California (404 breaks) /
Surf Forecasts:
Russian Rivermouth surfForecast / CAL – Sonoma / USA
48hr Weather and Surf, issued 4 am Thursday 18 Sep 2025 PDT
How big are the waves at Russian Rivermouth today?
The current surf forecast for Russian Rivermouth at 6AM is: 1.4m 9s primary swell from a West-northwest direction and 0.6m 15s secondary swell from a South-southwest direction (forecast issued at 04:00am September 18). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 5ft (1.5m) | 10s |
| Afternoon (18 Sep) | 4.5ft (1.4m) | 10s |
| Evening (18 Sep) | 4ft (1.2m) | 10s |
Table - waves today at Russian Rivermouth. (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | ||||||||||||||||||||||
| 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 | 8 PM | 11 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 363 | 274 | 416 | 442 | 396 | 345 | 279 | 279 | 237 | 176 | 176 | 140 | 137 | 123 | 123 | 121 | 121 | 121 | 121 | 120 | 99 | 98 | 96 | 145 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | glass | glass | cross- on | cross- on | cross- on | glass | glass | cross- off | glass | glass | cross | cross- on | cross- on | glass | glass | glass | glass | glass | on | on | on | cross- on | cross- on |
High Tide / height (m) | 10:12AM 1.87 | 9:14PM 2.14 | 10:40AM 1.93 | 10:04PM 2.12 | 11:06AM 2.00 | 10:50PM 2.07 | ||||||||||||||||||
Low Tide / height (m) | 3:27AM 0.31 | 3:25PM 1.14 | 4:07AM 0.36 | 4:12PM 1.00 | 4:41AM 0.44 | 4:54PM 0.87 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | ||||||||||||||||||||||
| Sunrise | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - |
| Sunset | - | - | - | - | - | 7:15 | - | - | - | - | - | - | - | 7:14 | - | - | - | - | - | - | - | 7:13 | - | - |
 |  |  | | | | | | |  |  | |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 18 | 18 | 21 | 21 | 17 | 14 | 14 | 14 | 14 | 14 | 19 | 21 | 19 | 15 | 15 | 15 | 14 | 15 | 21 | 22 | 21 | 16 | 16 |
| Feels °C (?) | 19 | 17 | 18 | 20 | 20 | 17 | 14 | 14 | 14 | 14 | 14 | 18 | 20 | 18 | 15 | 15 | 16 | 14 | 15 | 20 | 21 | 20 | 15 | 15 |
- 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 - Sonoma
Continuing clean conditions at Russian Rivermouth (calm at Cazadero 9 km from Russian Rivermouth). 2.4m 8s swell from the NW with a 1.0m 10s swell from the W. 2 swells combining so expect closeout sets.
Actual: 52 min ago
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