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 05:20 AM and sunset is at 08:52 PM.

Days 1–3 Weather Summary

Some drizzle, heaviest during Tue morning. Warm air temperatures (max 25°C on Thu afternoon, min 9°C on Tue night). Wind will be generally light.

Days 4–6 Weather Summary

Light rain (total 3mm), mostly falling on Fri afternoon. Cool air temperatures (max 16°C on Sat afternoon, min 7°C on Sun night). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Warm (max 24°C on Tue afternoon, min 9°C on Mon morning). Wind will be generally light.

Days 10–12 Weather Summary

Mostly dry. Warm (max 25°C on Thu afternoon, min 10°C on Thu night). Wind will be generally light.

Days 13–16 Weather Summary

Some drizzle, heaviest during Mon afternoon. Warm (max 24°C on Sun afternoon, min 9°C on Tue 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
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
PM
Wave Height Map
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High Tide
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
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
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
light rain
cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
part cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
light rain
part cloud
clear
part cloud
clear
clear
part cloud
light rain
some clouds
clear
clear
clear
clear
clear
some clouds
some clouds
cloudy
light rain
cloudy
some clouds
some clouds
some clouds
cloudy
some clouds
clear
clear
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
some clouds
clear
clear
some clouds
clear
some clouds
clear
some clouds
some clouds
cloudy
some clouds
some clouds
some clouds
light rain
some clouds
clear
some clouds
clear
clear
some clouds
km/h
0
NW
5
NE
0
SE
10
NNW
15
NNW
0
ENE
5
NW
10
NNW
10
S
10
SSW
0
ESE
5
SE
5
SW
10
NW
5
ENE
0
ENE
10
N
5
NE
5
N
10
NNW
0
NNW
0
WNW
5
W
5
SE
10
SW
10
WNW
5
SSW
10
SSW
10
W
5
SSE
10
SW
10
W
5
SSE
5
SW
15
NNW
5
NE
10
N
10
NE
15
S
15
SW
10
SW
5
S
5
NW
15
NNW
5
ENE
10
NNW
15
NNW
1
3
1
max °C
10
14
15
18
22
19
21
25
21
12
12
11
12
16
14
11
16
15
15
21
17
19
24
21
22
23
16
19
25
20
19
24
17
18
21
17
19
24
20
16
18
18
17
20
17
17
21
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
4:01
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
8:52
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
9:05
Today's sea temperature in Mercer Island is
13.5° C
(Statistics for 26 May 1981-2005 – mean: 11.2 max: 12.8 min: 10.2°C)
Issued (local time): 4 am Tuesday 26 May 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest