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Mystos surfForecast / CAL – Sonoma / USA

information circle12 Day Weather and Surf, issued 4 pm Monday 18 Aug 2025 PDT
Forecast update in hr  min  s Forecast update imminent
Mystos surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mystos sea temperature is
14.0° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Mystos this week:

The surf forecast for Mystos over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 18) at 11PM. The primary swell is predicted to be 0.6m and 17s period with a secondary swell of 0.4m and 9s. Another secondary swell of 0.6m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Mystos in the next 12 days are 1.9m 8s and forecast to arrive on Saturday (Aug 23) at 11PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Monday (Aug 25) at 11PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Mon 18th Aug)2ft (0.6m) 17s
Best Surf11PM (Sat 23rd Aug)6ft (1.9m) 8s
Most Powerful11PM (Sat 23rd Aug)6ft (1.9m) 8s

Table - best surf conditions forecast for Mystos over the next 12 days.

Hourly12 Days
Sonoma County Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 

Short Range Forecast Mostly dry. Warm (max 23°C on Wed afternoon, min 12°C on Mon night). Winds increasing (calm on Tue morning, fresh winds from the NW by Wed afternoon).

Days 3-6 Weather Summary Mostly dry. Warm (max 22°C on Thu afternoon, min 13°C on Sat night). Wind will be generally light.

Mon
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
2
0
0
2
1
0
2
0
0
2
0
0
2
1
0
2
1
1
2
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
1.1
WNW
1.6
WNW
1.3
WNW
1.1
WNW
1.6
WNW
0.5
SW
1.7
WNW
1.5
WNW
0.6
SW
1.2
WNW
0.4
SW
1.5
WNW
1.2
WNW
0.4
SW
Period(s) (?)17161616161515888881688159218920
Wave
Graph
(?)Metric surfscale
Energy (?)290300262234308338318334615401351586306631591359428380657465312
Wind
(km/h)
25
WNW
10
NNW
10
WNW
30
WNW
15
NNW
15
WNW
30
NW
15
NNW
15
WNW
25
WNW
10
NNW
15
WNW
20
WNW
0
N
10
W
20
WNW
0
NE
10
WSW
15
WNW
5
ESE
5
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off		cross-
on		crosscross-
off		crosscrosscross-
off		crosscrosscross-
off		cross-
on		crossglasscross-
on		crossglassoncrossglasson
High Tide
/ height (m)
7:03PM
1.89
9:47AM
1.39
8:07PM
1.91
10:31AM
1.46
9:04PM
1.92
11:09AM
1.50
9:55PM
1.90
11:44AM
1.54
10:43PM
1.84
12:16PM
1.56
11:28PM
1.75
12:46PM
1.58
12:12AM
1.64
1:12PM
1.59
Low Tide
/ height (m)
2:47AM
-0.11
2:24PM
0.95
3:39AM
-0.17
3:22PM
0.86
4:24AM
-0.19
4:14PM
0.77
5:04AM
-0.17
5:01PM
0.67
5:40AM
-0.11
5:46PM
0.59
6:14AM
-0.01
6:29PM
0.52
6:46AM
0.12
Mon
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Sunrise--6:30--6:31--6:31--6:33--6:33--6:33--6:35
Sunset8:02--8:01--8:00--7:59--7:58--7:55--7:54--
clearclearclearclearclearclearclearclearpart cloudpart cloudpart cloudpart cloudpart cloudclearclearpart cloudclearclearpart cloudclearpart cloud
Rain (mm)
---------------------
Temp. °C181619211722231821221721211720211619211518
Feels °C (?)131217161219181419191319191519191418201317
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for CAL - Sonoma

  1. weather stationWind Update Continuing clean conditions at Mystos (calm at Cazadero 10 km from Mystos). 0.8m 13s groundswell from the W with a 0.3m 15s groundswell from the SSW and a 0.3m 12s groundswell, also from the SSW. 3 swells combining to make bigger set waves.

    54 minutes ago Mystos
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Actual: 54 min ago

0 km/h
E
Clean
Please reload the page to see if there are any updates.

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 Mystos 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.

View detailed surf forecast for Mystos at:
surf-forecast.com

Information about the Mystos Surf forecast

The above surf forecast table for Mystos provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Mystos can be found by selecting the local surf guide option on the grey menu. Our Mystos 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 (Mystos) 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 Mystos 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.

Mystos is 37 km (23 miles) from the city of Windsor. If you plan a vacation in Sonoma County, look for hotels and other accommodation in Windsor. Windsor has rooms for a wide range of budgets as well as car hire and transport links.

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