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 08:00 AM and sunset is at 04:17 PM.

Days 1–3 Weather Summary

Moderate rain (total 19mm), heaviest on Sun afternoon. Low air temperatures (max 8°C on Sun morning, min 6°C on Sat night). Winds increasing (calm on Sat night, strong winds from the SSE by Mon morning).

Days 4–6 Weather Summary

A dusting of new snow. Icy conditions (max 7°C on Tue afternoon, min 0°C on Thu morning). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 3mm), mostly falling on Fri morning. Mild temperatures (max 7°C on Sat night, min 3°C on Fri morning). Wind will be generally light.

Days 10–12 Weather Summary

Heavy rain (total 20mm), heaviest during Tue afternoon. Mild temperatures (max 9°C on Mon night, min 6°C on Mon morning). Winds decreasing (near gales from the SE on Mon afternoon, calm by Tue night).

Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
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
Wave Height Map
High Tide
7:28AM2.55m
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
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
Wave
height (m) 
direction
period (s) 
rain showers
light rain
rain showers
part cloud
rain showers
part cloud
cloud
rain showers
rain showers
cloud
part cloud
cloud
part cloud
clear
part cloud
cloud
cloud
light snow
light rain
cloud
part cloud
cloud
part cloud
part cloud
part cloud
clear
cloud
cloud
light rain
light rain
light rain
mod rain
light rain
light rain
cloud
part cloud
rain shwrs
light rain
rain shwrs
some clouds
rain shwrs
some clouds
cloudy
rain shwrs
rain shwrs
cloudy
some clouds
cloudy
some clouds
clear
some clouds
cloudy
cloudy
light snow
light rain
cloudy
some clouds
cloudy
some clouds
some clouds
some clouds
clear
cloudy
cloudy
light rain
light rain
light rain
mod rain
light rain
light rain
cloudy
some clouds
 km/h
20
SSE
20
SSE
5
ESE
25
SSE
25
SE
25
W
40
SSE
40
S
25
SSE
0
E
20
SE
10
NNE
15
N
15
N
20
NNE
25
NNE
25
N
15
NNE
5
NE
10
N
20
NNW
5
NNE
5
SSE
15
SE
20
SE
15
ESE
15
E
25
SE
40
SSE
45
SSE
20
S
5
ENE
5
W
5
SW
5
SW
15
ESE
 mm 
1
2
5
6
3
2
3
1
5
3
7
2
2
max°C
7
7
7
8
8
7
6
7
6
6
7
6
5
6
5
2
3
2
4
4
6
5
6
7
7
7
6
7
8
9
9
7
8
8
8
7
Moonrise
9:09
9:48
10:18
10:41
11:00
11:16
11:31
11:46
12:02
12:22
12:48
1:25
Moonset
4:32
5:39
6:51
8:06
9:20
10:35
11:50
1:08
2:30
3:56
5:24
Sunrise
8:00
8:00
8:00
8:02
8:02
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): 9 am Saturday 20 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest