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 2mm), mostly falling on Mon night. Warm air temperatures (max 26°C on Thu afternoon, min 9°C on Mon night). Wind will be generally light.

Days 5–7 Weather Summary

Light rain (total 3mm), mostly falling on Fri afternoon. Warm air temperatures (max 21°C on Thu night, min 8°C on Sat morning). Wind will be generally light.

Days 8–10 Weather Summary

Light rain (total 3mm), mostly falling on Tue night. Warm (max 24°C on Tue afternoon, min 7°C on Sun night). Wind will be generally light.

Days 11–13 Weather Summary

Mostly dry. Warm (max 22°C on Thu afternoon, min 9°C on Fri night). Wind will be generally light.

Days 14–17 Weather Summary

Mostly dry. Warm (max 26°C on Mon afternoon, min 9°C on Sat night). Wind will be generally light.

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
Wed
10
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
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High Tide
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
11:16PM3.12m
11:41AM2.00m
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
6:48AM1.64m
4:08PM1.72m
Wave
Height (m)
Direction
Period (s)
light rain
light rain
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
light rain
light rain
cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
part cloud
light rain
rain showers
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
cloud
light rain
light rain
some clouds
clear
clear
clear
clear
clear
some clouds
some clouds
cloudy
light rain
light rain
cloudy
cloudy
cloudy
some clouds
some clouds
clear
clear
clear
some clouds
cloudy
some clouds
light rain
rain shwrs
clear
clear
clear
clear
some clouds
some clouds
clear
clear
clear
clear
clear
some clouds
clear
clear
some clouds
some clouds
some clouds
cloudy
some clouds
some clouds
cloudy
km/h
5
SSW
0
NNW
5
NNE
5
ENE
10
NNW
15
NNW
0
NNE
5
NW
15
NNW
5
SSW
10
S
5
S
5
SE
0
SSE
5
ESE
5
S
5
S
10
NNW
5
ENE
10
N
10
NNW
5
NE
5
SW
10
SW
5
SSE
10
SSW
10
W
10
SSE
10
SW
15
WSW
10
SSW
10
SSW
15
WSW
5
SSE
10
N
15
NNW
5
NE
10
N
15
NNW
5
NE
5
WNW
10
WNW
10
S
10
SW
15
WNW
5
SSE
5
NNW
1
1
1
2
2
1
max °C
12
10
15
15
18
22
19
21
26
21
12
13
12
8
12
13
12
16
14
15
20
16
20
24
18
18
23
19
18
22
18
18
20
17
17
20
17
18
23
19
20
26
19
14
20
16
17
Moonrise
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
2:03
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
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: 10.2°C)
Issued (local time): 10 pm Monday 25 May 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest