Roche Harbor, San Juan Island Sea Conditions and Tide Table

Roche Harbor, San Juan Island 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 08:06 PM.

Days 1–4 Weather Summary

Mostly dry. Cool air temperatures (max 16°C on Fri afternoon, min 5°C on Wed morning). Wind will be generally light.

Days 5–7 Weather Summary

Light rain (total 2mm), mostly falling on Sat night. Cool air temperatures (max 15°C on Fri night, min 7°C on Sat night). Winds decreasing (fresh winds from the WSW on Sat night, calm by Sun afternoon).

Days 8–10 Weather Summary

Moderate rain (total 13mm), heaviest on Wed night. Very mild (max 11°C on Thu afternoon, min 8°C on Mon night). Wind will be generally light.

Days 11–13 Weather Summary

Light rain (total 2mm), mostly falling on Sun morning. Very mild (max 14°C on Fri night, min 9°C on Fri night). Winds increasing (calm on Fri morning, fresh winds from the WSW by Sun afternoon).

Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sun
28
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
Wave Height Map
High Tide
2:33AM2.29m
11:58AM1.53m
3:09AM2.25m
1:46PM1.51m
3:36AM2.20m
3:05PM1.57m
3:55AM2.15m
4:08PM1.66m
4:11AM2.12m
5:01PM1.76m
5:51PM1.87m
6:38PM1.98m
7:25PM2.08m
5:14AM2.09m
8:14PM2.16m
5:30AM2.08m
9:06PM2.22m
5:42AM2.08m
10:04PM2.25m
5:44AM2.07m
Low Tide
6:18PM0.23m
9:15AM1.44m
7:23PM0.37m
9:42AM1.24m
8:20PM0.48m
10:04AM1.02m
9:07PM0.61m
10:25AM0.78m
9:49PM0.75m
10:46AM0.52m
10:27PM0.92m
11:09AM0.25m
11:04PM1.11m
11:34AM0.00m
11:40PM1.30m
12:02PM-0.21m
00:17AM1.50m
12:33PM-0.37m
00:56AM1.68m
1:08PM-0.46m
1:38AM1.84m
1:47PM-0.49m
2:29AM1.97m
2:32PM-0.46m
Wave
height (m) 
direction
period (s) 
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
rain showers
part cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
light rain
mod rain
rain showers
clear
part cloud
clear
clear
clear
clear
clear
part cloud
light rain
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloudy
cloudy
rain shwrs
some clouds
some clouds
some clouds
cloudy
cloudy
some clouds
cloudy
cloudy
cloudy
cloudy
light rain
mod rain
rain shwrs
clear
some clouds
clear
clear
clear
clear
clear
some clouds
light rain
some clouds
 km/h
5
NNW
10
N
10
N
5
NW
20
N
15
NNW
15
NNE
10
N
15
N
10
NE
10
E
25
W
35
WSW
20
SW
0
S
5
NE
10
N
5
NNW
10
SSW
20
SSE
10
S
5
ENE
20
E
15
ESE
10
SE
5
W
15
NNW
5
SW
0
NNW
5
SW
0
N
10
N
5
WSW
5
S
15
SW
30
WSW
 mm 
2.0
2.0
9
2.0
2.0
max°C
9
6
11
11
9
15
14
10
16
15
11
14
9
8
10
10
8
10
10
9
10
10
9
10
10
10
11
11
11
13
14
11
13
13
11
14
Moonrise
12:27
1:38
2:48
3:55
5:02
6:09
7:17
8:27
9:40
10:55
12:08
1:14
Moonset
4:05
4:28
4:46
5:01
5:14
5:26
5:38
5:52
6:08
6:29
6:56
7:34
8:25
Sunrise
6:16
6:15
6:13
6:11
6:09
6:07
6:05
6:03
6:01
6:00
5:58
5:56
Sunset
8:06
8:07
8:08
8:09
8:12
8:13
8:15
8:15
8:17
8:19
8:21
8:22
8:23
Today's sea temperature in Roche Harbor, San Juan Island is 8.7 °C (Statistics for 16 Apr 1981-2005 – mean: 10.0 max: 11.3 min: 8.8°C)
Nearest