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 06:45 AM and sunset is at 07:32 PM.

Days 1–3 Weather Summary

Moderate rain (total 17mm), heaviest on Sun afternoon. Warm air temperatures (max 20°C on Sun morning, min 1°C on Tue night). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Warm air temperatures (max 20°C on Fri afternoon, min 1°C on Wed morning). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Warm (max 27°C on Mon afternoon, min 13°C on Sat night). Wind will be generally light.

Days 10–12 Weather Summary

Light rain (total 3mm), mostly falling on Fri morning. Warm (max 31°C on Thu afternoon, min 6°C on Fri morning). Wind will be generally light.

Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Mon
20
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
High Tide
9:36AM0.47m
9:57PM0.29m
10:17AM0.45m
10:39PM0.29m
11:00AM0.42m
11:24PM0.29m
11:50AM0.40m
00:16AM0.30m
12:46PM0.39m
1:12AM0.30m
1:47PM0.39m
2:11AM0.30m
2:46PM0.40m
3:09AM0.32m
3:40PM0.41m
4:02AM0.34m
4:30PM0.40m
4:51AM0.39m
5:17PM0.39m
5:38AM0.45m
6:02PM0.37m
6:23AM0.51m
6:47PM0.34m
7:09AM0.56m
7:32PM0.32m
7:57AM0.59m
8:17PM0.31m
8:47AM0.60m
Low Tide
4:58PM0.10m
3:40AM0.05m
5:40PM0.12m
6:23PM0.14m
5:11AM0.08m
7:11PM0.15m
6:03AM0.09m
8:04PM0.16m
6:58AM0.09m
8:59PM0.15m
7:57AM0.10m
9:50PM0.14m
9:01AM0.10m
10:35PM0.13m
10:10AM0.10m
11:13PM0.12m
11:19AM0.09m
11:46PM0.11m
12:25PM0.07m
00:16AM0.09m
1:27PM0.06m
00:47AM0.07m
2:25PM0.05m
1:21AM0.05m
3:20PM0.05m
2:04AM0.04m
4:13PM0.06m
Wave
height (m) 
direction
period (s) 
rain showers
rain showers
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
light rain
mod rain
light rain
cloud
cloud
cloud
light rain
heavy rain
heavy rain
cloud
part cloud
rain shwrs
rain shwrs
clear
clear
some clouds
clear
clear
clear
clear
clear
clear
clear
some clouds
clear
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
clear
some clouds
some clouds
clear
clear
some clouds
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
rain shwrs
light rain
mod rain
light rain
cloudy
cloudy
cloudy
light rain
heavy rain
heavy rain
cloudy
some clouds
 km/h
20
WSW
20
NW
20
WNW
20
WNW
20
WNW
15
WNW
20
NW
20
NW
15
NE
10
ESE
10
SSE
15
SSE
10
SE
20
SSE
10
SSE
10
S
10
SSE
5
SSW
10
ENE
10
ESE
10
SSE
20
S
25
SSE
15
S
15
SSW
20
SSW
15
SSW
10
W
5
SW
5
SSE
10
SSW
15
SSW
15
SSW
20
SW
25
SW
20
NNW
15
N
10
N
5
N
10
ENE
10
SE
5
ESE
15
ENE
15
NE
15
N
15
N
10
NE
 mm 
2
15
1
5
7
4
1
13
16
max°C
20
14
13
9
13
12
8
10
9
3
9
8
7
15
13
14
20
18
16
20
19
18
21
18
20
27
23
21
25
24
21
27
23
25
31
23
6
4
6
9
11
9
8
6
8
11
16
Moonrise
11:36
12:35
1:30
2:18
2:59
3:34
4:03
4:30
4:54
5:18
5:43
6:11
6:43
7:23
8:13
Moonset
8:08
8:45
9:28
10:19
11:16
12:18
1:23
2:29
3:36
4:45
5:55
7:08
8:25
9:44
11:03
Sunrise
6:45
6:43
6:41
6:39
6:39
6:37
6:35
6:33
6:33
6:31
6:30
6:28
6:26
6:24
6:24
6:22
Sunset
7:32
7:34
7:35
7:36
7:37
7:37
7:38
7:39
7:40
7:42
7:43
7:44
7:45
7:45
7:46
7:47
Today's sea temperature in Fort McHenry Marsh, Patapsco River is
11.3° C
(Statistics for 05 Apr 1981-2005 – mean: 4.3 max: 9.2 min: 1.2°C)
Issued (local time): 1 am Sunday 05 Apr 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest