The Fort surfForecast / CAL – Sonoma / USA

information circle12 Day Weather and Surf, issued 3 am Saturday 20 Dec 2025 PST
Forecast update in hr  min  s Forecast update imminent
The Fort surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Fort sea temperature is
13.1° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for The Fort this week:

The surf forecast for The Fort over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 20) at 7AM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.7m and 13s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at The Fort in the next 12 days are 4.5m 10s and forecast to arrive on Thursday (Dec 25) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Dec 24) at 10PM.

Wave TypeTime (PST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sat 20th Dec)4.5ft (1.4m) 10s
Best Surf 7AM (Sat 20th Dec)4.5ft (1.4m) 10s
Most Powerful 4PM (Thu 25th Dec)15ft (4.5m) 10s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 56mm), heaviest during Sat night. Very mild (max 16°C on Sat morning, min 9°C on Mon night). Winds decreasing (fresh winds from the S on Sun morning, calm by Mon morning).

Days 3-6 Weather Summary Heavy rain (total 119mm), heaviest during Tue night. Very mild (max 13°C on Tue afternoon, min 10°C on Tue morning). Winds increasing (calm on Tue morning, strong winds from the SSE by Wed night).

Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
0
0
1
1
2
1
2
2
1
2
2
1
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.3
W
1.2
W
1.3
SW
1.7
WSW
1.8
WSW
1.3
WSW
1.1
WSW
1
WSW
0.9
WSW
1.1
WNW
1.5
WNW
1.4
WNW
1.1
WNW
1
WNW
0.8
WNW
3
S
4.5
SW
4
SSW
3
WNW
3
WNW
1.1
WNW
Period(s) (?)1010688810991212121212119109111110
Wave
Graph
(?)Metric surfscale
Energy kJ (?)32727911234540220322616911336563454831725213316664298244625961873255
Wind
(km/h)
5
SE
10
SE
25
SSW
30
S
10
WSW
10
NW
5
N
10
NW
10
NNE
5
WNW
10
SSE
5
NNW
5
SW
15
SE
40
SE
35
S
25
S
25
SSE
25
S
25
SSE
25
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
on
cross-
on
cross-
on
crossglasscrossoffglasscross-
on
glassglasscrosscrosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross
High Tide
/ height (m)
12:31AM
1.36
10:27AM
1.76
1:06AM
1.36
11:05AM
1.73
1:40AM
1.37
11:46AM
1.66
2:15AM
1.39
12:30PM
1.55
2:51AM
1.43
1:23PM
1.42
3:27AM
1.50
2:29PM
1.27
Low Tide
/ height (m)
5:19PM
-0.20
4:59AM
1.01
5:53PM
-0.20
5:37AM
1.00
6:28PM
-0.20
6:20AM
0.98
7:05PM
-0.16
7:11AM
0.94
7:43PM
-0.09
8:13AM
0.87
8:24PM
0.03
9:25AM
0.75
9:08PM
0.19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sunrise7:26--7:26--7:26--7:26--7:28--7:28--7:28--
Sunset-4:53--4:54--4:54--4:55--4:55--4:57--4:58-
part cloud
light rain
heavy rain
heavy rain
light rain
part cloud
cloud
cloud
mod rain
light rain
heavy rain
heavy rain
part cloud
light rain
heavy rain
mod rain
light rain
thunderstorm
rain showers
light rain
heavy rain
Rain (mm)
-426173---641746-11965213212
Temp. °C161415151412131311111311111213121111131211
Feels °C (?)161413101310111191110101097566766
  • 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

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Information about the The Fort Surf forecast

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

The Fort is 38 km (24 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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