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 07:11 AM and sunset is at 04:43 PM.

Days 1–3 Weather Summary

Mostly dry. Icy conditions (max 5°C on Sun afternoon, min -5°C on Mon morning). Wind will be generally light.

Days 4–6 Weather Summary

A dusting of snow turning to light rain (total 3mm) on Thu night. Icy conditions (max 8°C on Wed morning, min 0°C on Tue night). Wind will be generally light.

Days 7–9 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 1°C on Fri night, min -3°C on Sat night). Wind will be generally light.

Days 10–12 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 4°C on Thu afternoon, min -4°C on Mon night). Wind will be generally light.

Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thu
18
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
7:44AM0.25m
8:47PM0.50m
8:39AM0.25m
9:43PM0.46m
9:38AM0.24m
10:37PM0.42m
10:42AM0.25m
11:29PM0.38m
11:50AM0.26m
00:19AM0.33m
12:57PM0.28m
1:07AM0.28m
2:00PM0.32m
1:52AM0.23m
2:56PM0.35m
2:37AM0.20m
3:46PM0.37m
3:21AM0.19m
4:32PM0.39m
4:06AM0.18m
5:15PM0.39m
4:50AM0.19m
5:55PM0.38m
Low Tide
1:57PM-0.09m
3:56AM0.02m
2:55PM-0.08m
4:47AM0.02m
3:55PM-0.04m
5:36AM0.01m
4:59PM-0.01m
6:22AM0.01m
6:09PM0.03m
7:03AM-0.00m
7:25PM0.06m
7:40AM-0.02m
8:44PM0.08m
8:14AM-0.03m
9:59PM0.09m
8:48AM-0.05m
11:00PM0.08m
9:25AM-0.06m
11:49PM0.08m
10:07AM-0.07m
00:29AM0.07m
10:51AM-0.08m
Wave
height (m) 
direction
period (s) 
cloud
clear
part cloud
cloud
cloud
clear
part cloud
cloud
cloud
cloud
light rain
part cloud
part cloud
part cloud
light snow
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
part cloud
cloud
light snow
light snow
clear
clear
clear
clear
part cloud
clear
cloud
part cloud
cloudy
clear
some clouds
cloudy
cloudy
clear
some clouds
cloudy
cloudy
cloudy
light rain
some clouds
some clouds
some clouds
light snow
some clouds
some clouds
some clouds
some clouds
some clouds
clear
some clouds
cloudy
some clouds
cloudy
light snow
light snow
clear
clear
clear
clear
some clouds
clear
cloudy
some clouds
 km/h
0
W
10
WSW
20
NNW
25
NNE
15
NNE
5
NE
5
S
20
SSW
15
SW
25
SSW
25
SW
15
WNW
20
WNW
5
NW
10
SE
15
NW
15
NW
5
WNW
20
WNW
20
NW
20
WNW
25
WNW
15
NW
10
WNW
10
SSE
15
SSE
15
NNE
30
NNW
25
NNW
25
NW
15
WNW
10
WNW
5
NNW
15
S
5
SSW
 mm 
1
2
max°C
4
5
3
-4
-3
-4
1
2
2
8
8
7
5
6
5
4
4
1
1
-1
-3
0
1
-2
0
0
-1
-1
-1
-3
1
2
1
3
4
Moonrise
7:41
8:55
10:06
11:12
12:15
1:17
2:17
3:17
4:19
5:21
6:21
Moonset
10:11
10:52
11:23
11:50
12:13
12:34
12:54
1:16
1:40
2:08
2:41
3:21
Sunrise
7:11
7:13
7:13
7:15
7:15
7:16
7:16
7:18
7:18
7:18
7:20
7:20
Sunset
4:43
4:43
4:43
4:43
4:43
4:43
4:43
4:43
4:44
4:44
4:44
4:45
Today's sea temperature in Fort McHenry Marsh, Patapsco River is
8.0° C
(Statistics for 07 Dec 1981-2005 – mean: 7.8 max: 10.9 min: 4.9°C)
Issued (local time): 12 am Sunday 07 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest