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 —.

Days 1–4 Weather Summary

Moderate rain (total 17mm), heaviest on Wed night. Low air temperatures (max 9°C on Wed night, min 3°C on Tue morning). Winds increasing (light winds from the SSE on Tue night, strong winds from the W by Wed night).

Days 5–7 Weather Summary

Mild with moderate rain (total 10mm) on Thu night. Becoming colder with a light covering of snow, mostly falling on Thu night. Icy conditions (max 6°C on Sat night, min 0°C on Thu night). Wind will be generally light.

Days 8–10 Weather Summary

A dusting of snow on Sun night. Freezing level rising with drizzle on Mon afternoon. Very mild (max 10°C on Wed afternoon, min 1°C on Sun night). Wind will be generally light.

Days 11–13 Weather Summary

Light rain (total 4mm), mostly falling on Fri night. Very mild (max 13°C on Thu afternoon, min 6°C on Sat night). Wind will be generally light.

Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wed
25
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
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
Wave Height Map
High Tide
1:28AM2.13m
8:06AM2.17m
3:22AM2.25m
4:13AM2.33m
4:45AM2.37m
5:07AM2.36m
5:23AM2.33m
1:38PM1.86m
5:34AM2.29m
3:07PM1.88m
5:44AM2.26m
4:18PM1.94m
5:55AM2.25m
5:22PM2.00m
6:08AM2.26m
6:25PM2.07m
6:22AM2.29m
7:30PM2.13m
6:36AM2.34m
8:38PM2.18m
6:52AM2.40m
9:55PM2.21m
7:09AM2.44m
11:28PM2.25m
7:30AM2.45m
Low Tide
4:36AM2.08m
5:05PM0.38m
6:09PM0.37m
7:18PM0.35m
8:18PM0.30m
9:06PM0.26m
10:43AM1.77m
9:46PM0.26m
10:53AM1.58m
10:21PM0.32m
11:13AM1.33m
10:54PM0.45m
11:38AM1.02m
11:28PM0.66m
12:10PM0.69m
00:03AM0.93m
12:46PM0.36m
00:40AM1.25m
1:27PM0.08m
1:18AM1.57m
2:12PM-0.12m
1:59AM1.87m
3:02PM-0.23m
2:44AM2.11m
3:57PM-0.23m
Wave
height (m) 
direction
period (s) 
part cloud
cloud
cloud
light rain
light rain
light rain
mod rain
cloud
light rain
mod snow
light snow
cloud
rain showers
part cloud
part cloud
part cloud
cloud
cloud
light snow
cloud
light rain
part cloud
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
cloud
light rain
cloud
part cloud
rain showers
rain showers
rain showers
part cloud
cloud
light rain
light rain
cloud
light rain
cloud
light rain
some clouds
cloudy
cloudy
light rain
light rain
light rain
mod rain
cloudy
light rain
mod snow
light snow
cloudy
rain shwrs
some clouds
some clouds
some clouds
cloudy
cloudy
light snow
cloudy
light rain
some clouds
clear
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
light rain
cloudy
light rain
cloudy
some clouds
rain shwrs
rain shwrs
rain shwrs
some clouds
cloudy
light rain
light rain
cloudy
light rain
cloudy
light rain
 km/h
30
WSW
40
SE
15
SW
15
S
25
SE
30
SSE
40
W
30
WSW
20
WSW
5
SE
15
WNW
15
W
20
WNW
5
NW
10
NNW
10
E
10
ENE
5
NNE
10
NE
5
NE
5
NNW
10
NNE
10
N
10
NNW
10
N
5
NNE
5
NNW
10
N
5
ESE
5
W
10
SSW
15
SW
5
SW
10
W
10
SSW
15
SSW
10
SW
35
WSW
35
W
30
ESE
25
ESE
15
E
10
SE
25
E
65
SSE
25
SE
30
ESE
 mm 
2
2
4
6
3
8
2
1
1
3
1
2
2
3
2
4
2
max°C
5
4
5
5
5
5
9
6
5
4
3
5
5
4
5
6
2
4
3
4
5
5
6
9
8
7
10
10
9
13
13
10
9
9
7
7
6
5
6
5
4
4
5
6
7
6
6
Moonrise
2:46
3:47
4:38
5:18
5:50
6:14
6:34
6:50
7:06
7:21
7:38
7:58
8:24
8:59
9:48
10:51
Moonset
10:15
11:00
11:56
1:01
2:14
3:30
4:47
6:04
7:23
8:44
10:08
11:35
1:01
2:21
3:29
Sunrise
7:35
7:33
7:31
7:30
7:28
7:24
7:22
7:20
7:18
7:16
7:15
7:13
7:11
7:09
7:07
7:05
Sunset
7:08
7:09
7:12
7:13
7:15
7:15
7:17
7:19
7:21
7:22
7:23
7:24
7:27
7:28
7:30
Today's sea temperature in Friday Harbor, San Juan Channel is
8.8° C
(Statistics for 09 Mar 1981-2005 – mean: 8.3 max: 9.9 min: 7.2°C)
Issued (local time): 10 pm Monday 09 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
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