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 04:20 PM.

Days 1–4 Weather Summary

Moderate rain (total 18mm), heaviest on Thu afternoon. Low air temperatures (max 8°C on Wed afternoon, min 4°C on Wed morning). Mainly fresh winds.

Days 5–7 Weather Summary

Mostly dry. Air temperatures will be slightly above freezing (max 4°C on Fri afternoon, min 1°C on Sat night). Wind will be generally light.

Days 8–10 Weather Summary

Mostly dry. Mild temperatures (max 6°C on Wed afternoon, min 3°C on Mon afternoon). Wind will be generally light.

Days 11–13 Weather Summary

Moderate rain (total 10mm), heaviest on Sun morning. Very mild (max 10°C on Sat afternoon, min 5°C on Thu afternoon). Wind will be generally light.

Tue
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sun
4
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
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
6:12AM2.72m
12:56PM2.60m
6:46AM2.78m
1:50PM2.52m
7:20AM2.79m
Low Tide
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
9:13PM-0.83m
9:58AM2.49m
9:59PM-0.91m
11:05AM2.42m
10:45PM-0.86m
12:09PM2.29m
Wave
height (m) 
direction
period (s) 
cloud
cloud
light rain
rain showers
part cloud
cloud
mod rain
light rain
light rain
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
rain showers
cloudy
cloudy
light rain
rain shwrs
some clouds
cloudy
mod rain
light rain
light rain
some clouds
some clouds
some clouds
cloudy
some clouds
some clouds
some clouds
some clouds
clear
some clouds
some clouds
clear
clear
clear
clear
some clouds
clear
some clouds
cloudy
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
light rain
rain shwrs
 km/h
10
SE
20
N
25
NNE
30
SSE
10
ENE
30
NNW
10
NNW
10
N
10
NNW
10
NNE
20
NNW
10
N
10
N
10
N
10
NNE
10
N
10
NNE
10
N
10
NNW
10
N
10
N
10
N
10
N
5
E
10
E
10
N
15
N
10
N
10
N
10
ESE
20
ESE
10
NE
20
SSE
25
SE
15
ESE
30
S
 mm 
4
2
9
2
1
2
5
max°C
7
5
5
8
7
6
4
4
5
4
4
4
3
3
2
2
2
3
3
4
5
5
5
5
6
6
5
6
6
7
7
8
9
10
9
10
Moonrise
11:00
11:16
11:31
11:46
12:02
12:22
12:48
1:25
2:16
3:25
4:47
Moonset
8:06
9:20
10:35
11:50
1:08
2:30
3:56
5:24
6:47
7:58
8:50
9:27
Sunrise
8:02
8:03
8:03
8:03
8:03
8:03
8:03
8:03
8:03
8:03
8:03
8:03
Sunset
4:20
4:20
4:21
4:22
4:22
4:22
4:23
4:24
4:25
4:27
4:28
4:29
Today's sea temperature in Friday Harbor, San Juan Channel is
9.2° C
(Statistics for 23 Dec 1981-2005 – mean: 8.1 max: 9.1 min: 6.6°C)
Issued (local time): 3 pm Tuesday 23 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest