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 07:13 AM and sunset is at 04:20 PM.

Days 1–3 Weather Summary

Mostly dry. Air temperatures will be below freezing (max -2°C on Thu morning, min -7°C on Tue morning). Wind will be generally light.

Days 4–6 Weather Summary

A dusting of new snow. Icy conditions (max 1°C on Sun morning, min -3°C on Fri morning). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Temperatures will be below freezing (max 0°C on Mon morning, min -9°C on Wed night). Wind will be generally light.

Days 10–12 Weather Summary

Heavy rain (total 30mm), heaviest during Sat night. Freeze-thaw conditions (max 9°C on Sun morning, min -7°C on Thu morning). Winds increasing (calm on Thu afternoon, strong winds from the SE by Sat night).

Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
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
night
Wave Height Map
High Tide
4:50PM2.72m
5:20AM2.98m
5:58PM2.63m
6:22AM3.03m
7:07PM2.59m
7:25AM3.08m
8:14PM2.61m
8:25AM3.14m
9:14PM2.66m
9:22AM3.19m
10:09PM2.72m
10:15AM3.22m
10:59PM2.76m
11:04AM3.21m
11:45PM2.77m
11:50AM3.15m
00:29AM2.76m
12:34PM3.06m
1:10AM2.73m
1:18PM2.94m
1:51AM2.69m
2:01PM2.80m
2:32AM2.65m
Low Tide
10:39AM0.07m
10:58PM0.09m
11:46AM0.04m
00:00AM0.16m
12:54PM-0.01m
1:03AM0.20m
1:58PM-0.09m
2:05AM0.20m
2:58PM-0.18m
3:03AM0.16m
3:53PM-0.24m
3:58AM0.12m
4:44PM-0.27m
4:48AM0.10m
5:31PM-0.25m
5:36AM0.10m
6:15PM-0.20m
6:22AM0.12m
6:57PM-0.11m
7:06AM0.18m
7:37PM0.01m
7:51AM0.24m
8:18PM0.13m
Wave
height (m) 
direction
period (s) 
0.4
NW
2
0.6
NNW
3
0.6
SSE
11
0.6
SSE
10
0.5
SSE
10
0.5
W
3
0.4
WNW
3
0.6
N
4
0.7
NW
3
0.6
NNW
3
0.3
N
3
0.2
ESE
15
0.2
ESE
14
0.3
S
3
0.6
N
3
0.6
NNE
4
0.7
SSE
9
0.7
SE
9
0.5
SE
10
0.4
ESE
11
0.4
ESE
11
0.3
E
11
0.4
E
11
0.5
WNW
3
0.5
W
3
0.6
WNW
3
0.5
NW
3
0.2
NNW
2
0.1
SE
10
0.1
E
10
0.2
NNE
3
0.1
NE
2
0.1
SW
2
0.6
S
3
1.4
S
5
2.5
SSE
7
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
cloud
snow showers
clear
clear
part cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
cloud
heavy rain
some clouds
some clouds
some clouds
cloudy
some clouds
some clouds
some clouds
some clouds
clear
clear
clear
some clouds
cloudy
cloudy
snow shwrs
clear
clear
some clouds
cloudy
cloudy
some clouds
some clouds
some clouds
clear
cloudy
some clouds
clear
clear
clear
some clouds
some clouds
clear
clear
clear
cloudy
heavy rain
 km/h
15
WNW
20
NW
15
WNW
15
WNW
15
WNW
15
WNW
20
NW
20
NW
25
NW
20
NW
10
NW
5
NNW
10
E
0
S
20
N
20
NNW
20
NNW
10
NW
5
NW
5
NW
5
NNW
5
NW
15
WNW
15
WNW
20
WNW
20
NW
15
NW
10
NW
5
W
10
N
10
N
5
NW
5
WSW
15
SW
25
S
35
SSE
 mm 
28
max°C
-4
-3
-5
-5
-5
-6
-2
-2
-4
-1
0
-2
0
0
-2
1
0
-2
0
0
-1
0
0
-5
-4
-5
-8
-4
-3
-4
-3
-2
-3
1
3
8
Moonrise
11:18
11:44
12:15
12:55
1:46
2:49
4:00
5:13
6:25
7:34
8:40
9:44
Moonset
12:20
1:37
2:56
4:15
5:29
6:33
7:25
8:04
8:34
8:58
9:18
9:36
Sunrise
7:13
7:13
7:13
7:13
7:13
7:11
7:11
7:11
7:11
7:09
7:09
7:09
Sunset
4:20
4:21
4:22
4:23
4:24
4:25
4:27
4:28
4:29
4:30
4:31
4:32
Today's sea temperature in Portland, Casco Bay is 5.1 °C (Statistics for 07 Jan 1981-2005 – mean: 4.9 max: 5.9 min: 2.9°C)
Issued (local time): 6 am Tuesday 07 Jan 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest