Fort McHenry Marsh, Patapsco River Sea Conditions and Tide Table

Fort McHenry Marsh, Patapsco River 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 08:34 PM.

Days 1–4 Weather Summary

Light rain (total 5mm), mostly falling on Tue night. Very warm air temperatures (max 35°C on Thu afternoon, min 15°C on Mon night). Winds increasing (calm on Tue morning, fresh winds from the WSW by Thu morning).

Days 5–7 Weather Summary

Mostly dry. Very warm air temperatures (max 31°C on Thu night, min 17°C on Sat night). Wind will be generally light.

Days 8–10 Weather Summary

Light rain (total 5mm), mostly falling on Sun night. Warm (max 28°C on Mon afternoon, min 16°C on Mon night). Wind will be generally light.

Days 11–13 Weather Summary

Heavy rain (total 21mm), heaviest during Sat afternoon. Warm (max 33°C on Sat afternoon, min 21°C on Wed night). Wind will be generally light.

Days 14–17 Weather Summary

Moderate rain (total 10mm), heaviest on Mon night. Warm (max 34°C on Tue afternoon, min 21°C on Tue night). Wind will be generally light.

Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wed
1
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
7:35PM0.37m
8:21AM0.66m
8:29PM0.40m
9:14AM0.64m
9:24PM0.41m
10:06AM0.60m
10:21PM0.43m
10:56AM0.56m
11:22PM0.45m
11:46AM0.51m
00:26AM0.47m
12:36PM0.45m
1:29AM0.50m
1:27PM0.40m
2:30AM0.52m
2:20PM0.35m
3:27AM0.55m
3:14PM0.31m
4:19AM0.57m
4:07PM0.30m
5:08AM0.58m
4:58PM0.30m
5:53AM0.58m
5:46PM0.32m
6:35AM0.57m
6:32PM0.34m
7:14AM0.56m
7:17PM0.36m
Low Tide
1:33AM0.05m
3:36PM0.11m
2:36AM0.06m
4:22PM0.11m
3:37AM0.08m
5:08PM0.11m
5:52PM0.11m
5:45AM0.15m
6:34PM0.11m
6:56AM0.19m
7:14PM0.11m
8:14AM0.22m
7:51PM0.11m
9:37AM0.23m
8:27PM0.12m
10:57AM0.22m
9:02PM0.12m
12:02PM0.21m
9:43PM0.12m
12:50PM0.20m
10:31PM0.12m
1:27PM0.20m
11:24PM0.12m
2:00PM0.20m
00:15AM0.12m
2:33PM0.19m
Wave
Height (m)
Direction
Period (s)
clear
clear
clear
rain showers
clear
part cloud
part cloud
rain showers
clear
part cloud
cloud
part cloud
clear
clear
clear
part cloud
clear
part cloud
rain showers
rain showers
rain showers
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
rain showers
part cloud
clear
clear
thunderstorm
rain showers
cloud
part cloud
clear
clear
clear
thunderstorm
clear
light rain
thunderstorm
clear
clear
clear
clear
rain shwrs
clear
some clouds
some clouds
rain shwrs
clear
some clouds
cloudy
some clouds
clear
clear
clear
some clouds
clear
some clouds
rain shwrs
rain shwrs
rain shwrs
some clouds
some clouds
some clouds
clear
some clouds
some clouds
clear
some clouds
some clouds
clear
rain shwrs
some clouds
clear
clear
risk tstorm
rain shwrs
cloudy
some clouds
clear
clear
clear
risk tstorm
clear
light rain
risk tstorm
clear
km/h
15
NNW
0
SSW
5
SE
15
S
5
WSW
0
WNW
20
SSW
30
WSW
25
W
15
NW
15
WNW
15
NW
15
WNW
20
NW
25
NW
10
WNW
10
WNW
0
WSW
25
SSE
25
SW
20
WNW
20
NW
20
NNW
20
N
10
NNW
5
W
0
SSW
5
SSW
10
S
15
SSE
10
S
15
S
30
S
15
SW
10
SSW
25
W
5
SW
0
N
5
NNE
10
ESE
10
SSE
25
SSE
10
SSW
20
SW
25
W
15
WNW
20
NW
3
2
1
2
2
1
14
6
6
1
3
max °C
22
20
24
23
26
30
28
30
35
31
23
29
26
22
26
24
24
27
25
24
28
25
20
25
24
23
26
25
24
27
26
27
32
27
30
33
23
26
29
29
29
33
25
30
34
28
24
Moonrise
6:57
8:15
9:32
10:45
11:54
1:00
2:03
3:05
4:08
5:10
6:12
7:11
8:05
8:52
9:33
Moonset
9:45
10:37
11:17
11:49
12:15
12:39
1:01
1:24
1:48
2:14
2:45
3:22
4:06
4:57
5:54
6:55
Sunrise
5:39
5:39
5:39
5:39
5:39
5:39
5:39
5:39
5:39
5:41
5:41
5:41
5:41
5:41
5:41
5:43
Sunset
8:34
8:34
8:35
8:35
8:35
8:35
8:36
8:36
8:36
8:36
8:36
8:36
8:36
8:36
8:36
8:36
Today's sea temperature in Fort McHenry Marsh, Patapsco River is
25.0° C
(Statistics for 15 Jun 1981-2005 – mean: 17.3 max: 20.2 min: 14.2°C)
Issued (local time): 7 pm Monday 15 Jun 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest