Mercer Island Sea Conditions and Tide Table

Mercer 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 08:51 PM.

Days 1–4 Weather Summary

Light rain (total 6mm), mostly falling on Mon afternoon. Warm air temperatures (max 22°C on Wed afternoon, min 8°C on Mon night). Wind will be generally light.

Days 5–7 Weather Summary

Light rain (total 2mm), mostly falling on Fri afternoon. Warm air temperatures (max 27°C on Thu afternoon, min 7°C on Sat night). Wind will be generally light.

Days 8–10 Weather Summary

Light rain (total 2mm), mostly falling on Tue night. Warm (max 29°C on Tue afternoon, min 8°C on Sun night). Wind will be generally light.

Days 11–13 Weather Summary

Light rain (total 9mm), mostly falling on Wed night. Warm (max 23°C on Wed afternoon, min 10°C on Fri night). Wind will be generally light.

Days 14–17 Weather Summary

Light rain (total 3mm), mostly falling on Mon night. Warm (max 24°C on Sun afternoon, min 9°C on Sun night). Wind will be generally light.

Mon
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sunday
7
Monday
8
Tuesday
9
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
PM
night
Wave Height Map
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High Tide
1:08PM2.12m
00:42AM3.13m
2:52PM2.31m
1:01AM3.08m
4:08PM2.55m
1:18AM3.05m
5:03PM2.77m
5:47PM2.93m
6:28PM3.04m
7:08PM3.09m
7:51PM3.11m
8:35PM3.11m
9:18PM3.11m
9:56PM3.11m
10:25PM3.11m
10:45PM3.11m
11:01PM3.11m
8:46AM2.05m
Low Tide
5:43PM1.75m
8:11AM1.18m
6:39PM2.09m
8:40AM0.90m
7:41PM2.36m
9:09AM0.67m
8:43PM2.56m
9:39AM0.49m
9:41PM2.69m
10:10AM0.38m
10:32PM2.76m
10:44AM0.31m
11:18PM2.81m
11:20AM0.29m
00:03AM2.85m
11:58AM0.32m
00:51AM2.86m
12:35PM0.38m
1:54AM2.85m
1:10PM0.47m
1:44PM0.61m
2:17PM0.80m
2:50PM1.05m
6:36AM2.02m
3:26PM1.36m
Wave
Height (m)
Direction
Period (s)
light rain
light rain
light rain
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
cloud
light rain
cloud
cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
light rain
part cloud
part cloud
light rain
rain showers
rain showers
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
rain showers
rain showers
part cloud
part cloud
clear
light rain
light rain
light rain
some clouds
some clouds
some clouds
clear
clear
clear
some clouds
cloudy
cloudy
light rain
cloudy
cloudy
some clouds
some clouds
clear
clear
some clouds
some clouds
clear
clear
some clouds
some clouds
light rain
some clouds
some clouds
light rain
rain shwrs
rain shwrs
some clouds
clear
clear
some clouds
clear
clear
some clouds
clear
clear
clear
some clouds
rain shwrs
rain shwrs
some clouds
some clouds
clear
km/h
10
SSW
5
S
5
ESE
5
E
0
ESE
5
NNW
15
NNW
0
ESE
5
WSW
5
NNW
10
SSW
10
SSW
10
SE
5
SSE
5
SSE
0
E
5
S
10
SSW
5
NNW
5
NE
10
N
15
NNW
5
NNE
10
NNW
10
SW
10
SSE
10
SSW
5
WSW
10
ESE
15
SSW
10
WSW
5
S
10
SSW
10
W
0
SSE
5
W
15
NNW
5
NE
5
W
10
WNW
10
SSE
10
SSW
15
SW
10
SSE
5
SW
10
NW
5
ENE
3
2
1
2
2
5
2
2
1
2
max °C
13
12
9
13
13
17
22
19
21
27
22
12
13
12
8
13
14
13
19
15
17
22
18
23
29
17
19
23
19
16
18
17
18
22
17
17
21
17
19
24
18
15
19
14
15
20
17
Moonrise
3:23
4:32
5:42
6:51
8:00
9:06
10:06
10:57
11:38
12:10
12:35
12:56
1:14
1:30
1:46
Moonset
2:56
3:12
3:30
3:52
4:19
4:54
5:39
6:34
7:36
8:44
9:54
11:05
12:16
1:28
2:42
Sunrise
5:20
5:18
5:18
5:16
5:16
5:16
5:15
5:15
5:13
5:13
5:13
5:11
5:11
5:11
5:11
Sunset
8:51
8:52
8:52
8:53
8:54
8:55
8:57
8:58
8:59
9:00
9:00
9:00
9:01
9:02
9:02
9:04
Today's sea temperature in Mercer Island is
13.5° C
(Statistics for 25 May 1981-2005 – mean: 11.2 max: 12.8 min: 10.1°C)
Issued (local time): 4 pm Monday 25 May 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest