Portland, Casco Bay Sea Conditions and Tide Table

Portland, Casco Bay 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 06:33 AM and sunset is at 06:59 PM.

Days 1–3 Weather Summary

Moderate rain (total 10mm) heaviest on Thu night, then becoming colder with a dusting of snow on Sat afternoon. Icy conditions (max 13°C on Thu afternoon, min -6°C on Fri night). Wind will be generally light.

Days 4–6 Weather Summary

Some drizzle, heaviest during Tue night. Icy conditions (max 12°C on Mon afternoon, min -3°C on Sun morning). Wind will be generally light.

Days 7–9 Weather Summary

A light covering of new snow, mostly falling on Wed morning. Becoming milder with moderate rain (total 12mm) heaviest on Thu afternoon. Freeze-thaw conditions (max 13°C on Wed night, min -2°C on Fri morning). Wind will be generally light.

Days 10–12 Weather Summary

A dusting of snow turning to light rain (total 8mm) on Sun night. Freeze-thaw conditions (max 11°C on Sun afternoon, min -2°C on Sat morning). Wind will be generally light.

Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tuesday
31
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Fri
10
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
5:29AM2.94m
6:26PM2.51m
6:41AM2.87m
7:39PM2.54m
7:56AM2.87m
8:46PM2.64m
9:03AM2.92m
9:42PM2.78m
9:59AM2.98m
10:30PM2.91m
10:49AM3.01m
11:14PM3.00m
11:36AM3.00m
11:54PM3.06m
12:19PM2.95m
00:31AM3.07m
12:59PM2.88m
1:07AM3.04m
1:38PM2.78m
1:42AM2.98m
2:16PM2.67m
2:17AM2.90m
2:56PM2.55m
2:56AM2.80m
3:41PM2.44m
3:41AM2.70m
4:31PM2.34m
4:33AM2.62m
5:25PM2.28m
Low Tide
12:03PM0.06m
00:19AM0.39m
1:16PM0.11m
1:34AM0.38m
2:26PM0.08m
2:45AM0.28m
3:25PM0.02m
3:44AM0.14m
4:15PM-0.03m
4:36AM0.01m
5:00PM-0.05m
5:23AM-0.08m
5:42PM-0.02m
6:07AM-0.12m
6:20PM0.04m
6:47AM-0.13m
6:56PM0.12m
7:25AM-0.09m
7:31PM0.23m
8:02AM-0.01m
8:07PM0.33m
8:41AM0.09m
8:45PM0.44m
9:24AM0.21m
9:29PM0.55m
10:11AM0.32m
10:18PM0.63m
11:04AM0.40m
Wave
height (m) 
direction
period (s) 
0.8
SSE
5
0.9
SSE
6
1.5
SSE
7
1.7
SSE
9
1.3
SSE
9
0.9
NNE
4
0.5
SSE
8
0.4
SSE
8
0.4
SE
8
0.6
SSW
3
1.3
S
5
1.7
S
6
1.1
S
6
1
S
6
1.1
S
7
0.6
S
6
0.5
S
8
0.6
SSE
4
1.4
SE
6
1.4
SE
7
1.5
SE
7
1.3
SSE
8
1.1
SSE
8
1.5
E
5
1.5
E
7
1.4
ESE
7
1.3
ESE
7
1.4
ESE
7
1.4
ESE
7
1.3
ESE
7
1.1
ESE
7
1.3
SE
6
1.2
SSE
7
0.9
SSE
8
1
SSE
8
0.8
SSE
8
0.5
SSE
8
0.5
SSE
8
0.6
SSE
8
0.6
SSE
7
0.6
SSE
7
1.1
S
6
0.9
SSE
5
1.9
SSE
6
3.5
SSE
9
2.4
SSE
10
2.1
SSE
11
cloud
cloud
mod rain
part cloud
part cloud
clear
cloud
light snow
clear
clear
part cloud
part cloud
cloud
cloud
part cloud
part cloud
cloud
light rain
light snow
light snow
part cloud
cloud
mod rain
light snow
light snow
light snow
light snow
cloud
cloud
light snow
cloud
cloud
mod rain
part cloud
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
cloud
cloud
rain showers
clear
part cloud
cloudy
cloudy
mod rain
some clouds
some clouds
clear
cloudy
light snow
clear
clear
some clouds
some clouds
cloudy
cloudy
some clouds
some clouds
cloudy
light rain
light snow
light snow
some clouds
cloudy
mod rain
light snow
light snow
light snow
light snow
cloudy
cloudy
light snow
cloudy
cloudy
mod rain
some clouds
clear
clear
clear
clear
some clouds
some clouds
cloudy
some clouds
cloudy
cloudy
rain shwrs
clear
some clouds
 km/h
15
SW
5
SW
10
WNW
30
NNW
25
N
15
NNE
5
ESE
5
WNW
5
W
15
SW
25
S
20
SW
15
SW
15
SW
10
NNW
5
WSW
15
SSE
10
ESE
20
E
10
SSW
10
WSW
10
NE
20
NE
20
NE
15
NE
10
NE
15
NE
15
ENE
15
SE
10
SSE
10
SSW
15
SW
5
WNW
20
WNW
25
WNW
10
W
5
NW
5
SE
10
E
5
SE
10
SE
15
SSW
20
S
30
SSE
25
W
25
W
25
W
 mm 
10
1
6
6
8
26
max°C
9
13
11
3
2
-2
-4
-2
-2
1
5
5
7
12
10
6
8
4
1
2
13
13
9
4
0
-1
-1
-1
1
2
6
11
10
6
7
5
5
9
6
5
10
13
10
11
11
9
9
Moonrise
11:48
1:05
2:21
3:34
4:45
5:54
7:01
8:08
9:15
10:21
11:27
12:28
1:24
2:11
2:50
Moonset
3:17
3:59
4:32
4:58
5:20
5:39
5:58
6:16
6:37
7:00
7:27
8:01
8:43
9:33
10:31
11:35
Sunrise
6:33
6:31
6:30
6:28
6:26
6:24
6:22
6:20
6:18
6:18
6:16
6:13
6:11
6:11
6:09
6:07
Sunset
6:59
7:00
7:01
7:02
7:04
7:05
7:07
7:07
7:08
7:09
7:10
7:13
7:14
7:15
7:15
7:16
Today's sea temperature in Portland, Casco Bay is
2.9° C
(Statistics for 26 Mar 1981-2005 – mean: 3.4 max: 4.5 min: 2.2°C)
Issued (local time): 7 am Thursday 26 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest