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 07:07 PM.

Days 1–4 Weather Summary

Moderate rain (total 16mm), heaviest on Tue morning. Warm air temperatures (max 29°C on Sun afternoon, min 11°C on Tue night). Wind will be generally light.

Days 5–7 Weather Summary

Light rain (total 4mm), mostly falling on Wed night. Warm air temperatures (max 20°C on Fri afternoon, min 11°C on Thu morning). Wind will be generally light.

Days 8–10 Weather Summary

Moderate rain (total 15mm), heaviest on Mon afternoon. Very mild (max 18°C on Sat afternoon, min 11°C on Mon morning). Wind will be generally light.

Days 11–13 Weather Summary

Moderate rain (total 15mm), heaviest on Thu night. Warm (max 25°C on Thu afternoon, min 15°C on Tue night). Wind will be generally light.

Days 14–17 Weather Summary

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

Sun
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wednesday
30
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
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
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
High Tide
2:21PM0.35m
3:30AM0.51m
3:26PM0.36m
4:17AM0.52m
4:25PM0.38m
4:58AM0.52m
5:18PM0.41m
5:35AM0.52m
6:05PM0.44m
6:12AM0.52m
6:48PM0.48m
6:49AM0.50m
7:28PM0.53m
7:26AM0.47m
8:08PM0.57m
8:04AM0.43m
8:50PM0.60m
8:44AM0.40m
9:35PM0.62m
9:27AM0.38m
10:26PM0.62m
10:15AM0.36m
11:24PM0.61m
11:11AM0.36m
00:30AM0.59m
12:17PM0.36m
1:38AM0.57m
1:30PM0.37m
Low Tide
8:02PM0.16m
10:42AM0.25m
9:07PM0.17m
11:23AM0.22m
10:10PM0.18m
12:00PM0.19m
11:10PM0.18m
12:33PM0.16m
00:09AM0.18m
1:04PM0.14m
1:07AM0.18m
1:31PM0.12m
2:04AM0.18m
1:57PM0.12m
3:01AM0.17m
2:22PM0.10m
3:58AM0.17m
2:52PM0.09m
4:55AM0.18m
3:29PM0.09m
5:52AM0.20m
4:17PM0.08m
6:50AM0.21m
5:18PM0.09m
7:50AM0.21m
6:28PM0.10m
8:49AM0.21m
7:45PM0.11m
Wave
Height (m)
Direction
Period (s)
thunderstorm
rain showers
part cloud
light rain
light rain
light rain
light rain
light rain
cloud
cloud
light rain
cloud
cloud
clear
cloud
cloud
cloud
cloud
cloud
rain showers
cloud
part cloud
rain showers
light rain
mod rain
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
rain showers
thunderstorm
rain showers
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
risk tstorm
rain shwrs
some clouds
light rain
light rain
light rain
light rain
light rain
cloudy
cloudy
light rain
cloudy
cloudy
clear
cloudy
cloudy
cloudy
cloudy
cloudy
rain shwrs
cloudy
some clouds
rain shwrs
light rain
mod rain
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
rain shwrs
risk tstorm
rain shwrs
some clouds
some clouds
clear
some clouds
some clouds
some clouds
some clouds
some clouds
clear
some clouds
clear
km/h
15
W
15
N
15
NE
15
NNE
15
ENE
25
ENE
25
ENE
25
NE
25
NE
25
NE
20
NE
20
NNE
20
NE
20
N
20
NNE
20
N
20
NNW
25
N
25
N
25
NE
25
NE
20
NE
25
NNE
25
NNE
25
NNE
20
NNE
20
NNE
15
NE
10
NE
10
NNE
5
NE
5
NE
15
S
20
S
10
WSW
10
NW
15
WNW
10
WNW
15
W
15
W
5
E
15
S
15
S
20
WNW
20
WNW
20
NW
15
NNW
 mm
1
1
2
3
3
3
3
4
1
1
3
10
1
13
1
max °C
29
25
21
20
17
16
15
13
13
15
15
13
17
16
16
20
17
16
18
16
15
16
15
11
13
13
13
18
17
16
20
18
21
25
23
17
20
17
17
21
20
20
25
22
16
20
18
Moonrise
4:05
4:39
5:09
5:35
5:59
6:22
6:45
7:11
7:40
8:16
8:59
9:53
10:57
12:08
1:23
Moonset
1:24
2:28
3:32
4:37
5:43
6:49
7:58
9:09
10:23
11:39
12:51
1:56
2:51
3:36
4:12
Sunrise
6:52
6:52
6:54
6:54
6:56
6:56
6:58
6:58
7:00
7:00
7:01
7:01
7:03
7:03
7:05
Sunset
7:07
7:05
7:04
7:01
7:00
6:59
6:57
6:55
6:53
6:52
6:51
6:49
6:47
6:45
6:44
6:43
Today's sea temperature in Fort McHenry Marsh, Patapsco River is
25.4°C
(Statistics for 20 Sep 1981-2005 – mean: 20.0 max: 22.1 min: 18.2°C)
Issued (local time): 1 pm Sunday 20 Sep 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest