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 08:13 PM.

Days 1–4 Weather Summary

Light rain (total 5mm), mostly falling on Sun night. Very warm air temperatures (max 30°C on Mon afternoon, min 19°C on Mon morning). Wind will be generally light.

Days 5–7 Weather Summary

Heavy rain (total 22mm), heaviest during Wed night. Very warm air temperatures (max 34°C on Tue afternoon, min 11°C on Fri morning). Wind will be generally light.

Days 8–10 Weather Summary

Heavy rain (total 34mm), heaviest during Sun night. Warm (max 23°C on Sun afternoon, min 10°C on Fri afternoon). Wind will be generally light.

Days 11–13 Weather Summary

Light rain (total 6mm), mostly falling on Tue morning. Warm (max 23°C on Wed afternoon, min 13°C on Mon afternoon). Wind will be generally light.

Days 14–17 Weather Summary

Light rain (total 5mm), mostly falling on Mon morning. Warm (max 24°C on Fri afternoon, min 12°C on Thu night). Wind will be generally light.

Sat
16
Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
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
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High Tide
7:06PM0.33m
7:39AM0.67m
7:56PM0.34m
8:33AM0.66m
8:46PM0.36m
9:28AM0.63m
9:39PM0.37m
10:24AM0.59m
10:36PM0.39m
11:22AM0.55m
11:38PM0.41m
12:20PM0.52m
00:43AM0.42m
1:17PM0.48m
1:50AM0.45m
2:12PM0.43m
2:53AM0.48m
3:05PM0.39m
3:51AM0.52m
3:56PM0.36m
4:43AM0.55m
4:45PM0.33m
5:30AM0.57m
5:31PM0.31m
6:13AM0.58m
6:16PM0.31m
6:53AM0.58m
6:59PM0.33m
Low Tide
2:17PM0.09m
00:43AM0.07m
3:08PM0.09m
1:41AM0.06m
3:57PM0.09m
2:42AM0.05m
4:46PM0.11m
3:46AM0.06m
5:35PM0.12m
6:24PM0.12m
5:57AM0.11m
7:13PM0.13m
7:08AM0.14m
8:01PM0.12m
8:23AM0.17m
8:45PM0.12m
9:41AM0.19m
9:26PM0.12m
10:57AM0.19m
10:04PM0.11m
12:05PM0.18m
10:39PM0.11m
1:00PM0.17m
11:15PM0.11m
1:46PM0.16m
11:54PM0.11m
2:24PM0.16m
Wave
Height (m)
Direction
Period (s)
clear
part cloud
clear
clear
rain showers
clear
clear
rain showers
clear
clear
part cloud
clear
rain showers
thunderstorm
part cloud
part cloud
light rain
mod rain
mod rain
mod rain
light rain
light rain
part cloud
cloud
part cloud
mod rain
light rain
light rain
cloud
light rain
light rain
light rain
clear
part cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
clear
some clouds
clear
clear
rain shwrs
clear
clear
rain shwrs
clear
clear
some clouds
clear
rain shwrs
risk tstorm
some clouds
some clouds
light rain
mod rain
mod rain
mod rain
light rain
light rain
some clouds
cloudy
some clouds
mod rain
light rain
light rain
cloudy
light rain
light rain
light rain
clear
some clouds
cloudy
some clouds
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain shwrs
km/h
15
SSW
10
W
10
WSW
0
SSE
5
SSE
5
SSE
10
SE
10
E
10
SW
10
SSE
15
SW
5
W
20
WNW
15
NNW
15
NNE
10
NNE
5
WNW
15
ESE
15
ESE
15
E
10
E
5
SE
5
ESE
0
WSW
10
NNE
15
ENE
15
ENE
10
E
10
ESE
5
SE
5
SE
0
SW
15
NW
10
NW
15
N
15
NW
20
NW
15
NW
20
NW
15
NNW
10
NNE
5
NNE
10
ESE
5
SE
10
ESE
15
ESE
10
NNE
4
1
2
10
3
7
9
10
2
2
8
3
1
3
1
1
2
max °C
28
25
25
28
23
24
30
27
28
34
29
29
30
23
16
20
20
11
11
10
11
14
16
18
23
19
12
13
14
14
16
19
21
23
20
16
17
17
19
24
23
20
24
24
20
24
21
Moonrise
6:00
6:58
8:06
9:22
10:37
11:50
12:59
2:05
3:08
4:10
5:12
6:15
7:17
8:18
9:16
Moonset
8:36
9:54
11:04
12:01
12:45
1:20
1:49
2:13
2:36
2:57
3:20
3:44
4:12
4:44
5:23
Sunrise
5:50
5:50
5:48
5:48
5:48
5:47
5:47
5:46
5:45
5:45
5:43
5:43
5:43
5:41
5:41
Sunset
8:13
8:14
8:15
8:15
8:16
8:16
8:17
8:19
8:20
8:21
8:22
8:22
8:22
8:23
8:24
8:24
Today's sea temperature in Fort McHenry Marsh, Patapsco River is
16.9° C
(Statistics for 16 May 1981-2005 – mean: 11.0 max: 14.3 min: 8.2°C)
Issued (local time): 1 pm Saturday 16 May 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest