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 14mm), heaviest on Sun night. Low air temperatures (max 9°C on Mon afternoon, min 4°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the SE by Mon afternoon).

Days 5–7 Weather Summary

Heavy rain (total 35mm), heaviest during Tue morning. Cool air temperatures (max 11°C on Wed morning, min 8°C on Tue morning). Winds decreasing (fresh winds from the SE on Tue afternoon, light winds from the S by Wed night).

Days 8–10 Weather Summary

Heavy rain (total 26mm), heaviest during Thu night. Very mild (max 12°C on Thu night, min 5°C on Sat night). Winds increasing (light winds from the SSW on Fri afternoon, fresh winds from the NNW by Sun morning).

Days 11–13 Weather Summary

Mostly dry. Very mild (max 10°C on Tue afternoon, min 5°C on Sun night). Wind will be generally light.

Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sun
29
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
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
1:22AM2.32m
7:50AM2.40m
2:48AM2.41m
3:33AM2.46m
4:04AM2.47m
11:50AM1.87m
Low Tide
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
3:58AM2.28m
5:00PM-0.15m
6:11PM-0.03m
7:23PM0.10m
10:06AM1.85m
Wave
height (m) 
direction
period (s) 
rain showers
part cloud
part cloud
part cloud
part cloud
light rain
mod rain
light rain
light rain
light rain
mod rain
light rain
light rain
light rain
light rain
mod rain
light rain
light rain
heavy rain
mod rain
light rain
light rain
cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
light rain
light rain
rain shwrs
some clouds
some clouds
some clouds
some clouds
light rain
mod rain
light rain
light rain
light rain
mod rain
light rain
light rain
light rain
light rain
mod rain
light rain
light rain
heavy rain
mod rain
light rain
light rain
cloudy
some clouds
some clouds
some clouds
clear
clear
some clouds
clear
some clouds
some clouds
some clouds
some clouds
some clouds
clear
some clouds
cloudy
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
light rain
light rain
 km/h
15
WNW
15
WNW
10
SW
15
S
15
ESE
20
SE
25
SE
25
SE
35
SE
15
ESE
20
SE
30
SE
20
SE
20
SE
5
SE
25
SE
15
SSE
15
SE
10
SSE
10
SSW
5
SSW
15
NNW
10
NNW
10
NW
10
N
30
NNW
25
NNW
20
NNW
20
NNW
10
SSW
20
WSW
20
SSE
10
SSE
15
SE
10
E
5
NNW
15
N
10
NNE
5
WSW
0
NNE
10
N
10
NNW
5
NNW
10
NNE
25
WSW
0
NE
5
WNW
 mm 
1
1
7
3
2
1
8
3
3
1
5
8
3
3
15
8
2
1
4
2
max°C
5
4
6
6
4
5
6
6
9
10
8
10
10
11
11
11
10
11
12
11
12
12
7
8
8
5
7
8
5
8
8
7
10
9
6
10
10
8
12
14
12
15
14
13
16
15
12
Moonrise
5:50
6:14
6:34
6:50
7:06
7:21
7:38
7:58
8:24
8:59
9:48
10:51
12:06
1:27
2:49
Moonset
2:14
3:30
4:47
6:04
7:23
8:44
10:08
11:35
1:01
2:21
3:29
4:20
4:56
5:23
5:43
Sunrise
7:28
7:24
7:22
7:20
7:18
7:16
7:15
7:13
7:11
7:09
7:07
7:05
7:03
7:01
6:58
6:56
Sunset
7:15
7:15
7:17
7:19
7:21
7:22
7:23
7:24
7:27
7:28
7:30
7:30
7:32
7:34
7:36
Today's sea temperature in Friday Harbor, San Juan Channel is
8.3° C
(Statistics for 13 Mar 1981-2005 – mean: 8.4 max: 10.3 min: 7.2°C)
Issued (local time): 10 pm Friday 13 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest