Friday Harbor, San Juan Channel Sea Conditions and Tide Table

Friday Harbor, San Juan Channel Sea Conditions table showing wave height, swell direction and period.

High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at — and sunset is at 04:17 PM.

Days 1–4 Weather Summary

Moderate rain (total 14mm), heaviest on Mon afternoon. Low air temperatures (max 8°C on Sun afternoon, min 5°C on Mon morning). Winds increasing (calm on Sat night, near gales from the SSE by Mon afternoon).

Days 5–7 Weather Summary

A light covering of new snow, mostly falling on Thu afternoon. Icy conditions (max 6°C on Tue afternoon, min -1°C on Thu morning). Winds increasing (calm on Tue afternoon, fresh winds from the N by Wed night).

Days 8–10 Weather Summary

Mostly dry. Mild temperatures (max 8°C on Sat afternoon, min 3°C on Fri afternoon). Winds increasing (light winds from the N on Fri afternoon, strong winds from the SSE by Mon morning).

Days 11–13 Weather Summary

Heavy rain (total 22mm), heaviest during Tue afternoon. Mild temperatures (max 9°C on Mon afternoon, min 4°C on Tue afternoon). Winds decreasing (near gales from the SE on Mon afternoon, calm by Wed afternoon).

Sat
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thu
1
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
Wave Height Map
High Tide
7:54AM2.56m
8:21AM2.57m
8:48AM2.60m
3:43PM1.98m
9:14AM2.62m
5:03PM1.83m
9:40AM2.63m
6:32PM1.64m
10:04AM2.63m
8:27PM1.45m
10:25AM2.62m
10:53PM1.40m
10:44AM2.61m
1:46AM1.60m
11:01AM2.62m
11:20AM2.64m
5:06AM2.34m
11:44AM2.67m
5:37AM2.59m
12:10PM2.64m
Low Tide
11:00PM-0.39m
11:33PM-0.38m
00:07AM-0.32m
3:16PM1.98m
00:43AM-0.20m
3:49PM1.82m
1:19AM0.01m
4:26PM1.59m
1:54AM0.31m
5:03PM1.29m
2:30AM0.69m
5:42PM0.91m
3:05AM1.13m
6:22PM0.49m
3:35AM1.58m
7:03PM0.06m
7:46PM-0.34m
8:27PM-0.63m
8:40AM2.47m
Wave
height (m) 
direction
period (s) 
light rain
rain showers
part cloud
rain showers
rain showers
cloud
light rain
rain showers
part cloud
cloud
part cloud
part cloud
clear
part cloud
cloud
light snow
light snow
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
mod rain
cloud
mod rain
light rain
light rain
rain showers
rain showers
part cloud
light rain
rain shwrs
some clouds
rain shwrs
rain shwrs
cloudy
light rain
rain shwrs
some clouds
cloudy
some clouds
some clouds
clear
some clouds
cloudy
light snow
light snow
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
clear
some clouds
cloudy
cloudy
mod rain
cloudy
mod rain
light rain
light rain
rain shwrs
rain shwrs
some clouds
 km/h
15
SE
0
E
20
SSE
20
SSE
30
W
35
SSE
55
SSE
15
SE
40
SE
5
SW
15
NNE
20
NNW
20
NNW
20
NNE
25
NNE
25
NNE
15
NNE
15
N
5
N
10
NE
10
ENE
10
NE
20
SE
15
ESE
10
E
15
E
30
SE
55
SE
5
WSW
25
S
10
W
15
SSW
15
WNW
5
N
10
NW
30
SE
 mm 
1
3
2
1
4
3
6
8
4
1
1
2
max°C
7
7
7
8
7
7
8
7
6
6
6
5
5
4
-1
0
1
2
4
6
6
8
7
6
7
6
8
9
9
7
4
4
5
5
4
4
Moonrise
9:48
10:18
10:41
11:00
11:16
11:31
11:46
12:02
12:22
12:48
1:25
2:16
Moonset
4:32
5:39
6:51
8:06
9:20
10:35
11:50
1:08
2:30
3:56
5:24
6:47
Sunrise
8:00
8:00
8:02
8:02
8:03
8:03
8:03
8:03
8:03
8:03
8:03
8:03
Sunset
4:17
4:19
4:19
4:20
4:20
4:21
4:22
4:22
4:22
4:23
4:24
4:25
Today's sea temperature in Friday Harbor, San Juan Channel is
9.5° C
(Statistics for 20 Dec 1981-2005 – mean: 8.2 max: 9.3 min: 6.6°C)
Issued (local time): 3 pm Saturday 20 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest