Northwest Harbor, Deer Isle, Penobscot Bay Sea Conditions and Tide Table

Northwest Harbor, Deer Isle, Penobscot 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 06:56 AM and sunset is at 03:55 PM.

Days 1–3 Weather Summary

A dusting of new snow. Icy conditions (max 2°C on Sat night, min -10°C on Mon night). Mainly strong winds.

Days 4–6 Weather Summary

Moderate rain (total 15mm), heaviest on Tue night. Icy conditions (max 8°C on Wed afternoon, min -3°C on Fri afternoon). Winds decreasing (strong winds from the SSW on Tue night, light winds from the WNW by Thu night).

Days 7–9 Weather Summary

Mostly dry. Temperatures will be below freezing (max -3°C on Sat morning, min -7°C on Sat night). Winds decreasing (fresh winds from the NW on Sun afternoon, light winds from the N by Mon afternoon).

Days 10–12 Weather Summary

Mostly dry. Freeze-thaw conditions (max 5°C on Thu afternoon, min -7°C on Mon night). Mainly strong winds.

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
12:07PM3.85m
00:55AM3.21m
1:03PM3.69m
1:53AM3.13m
2:02PM3.49m
2:51AM3.06m
3:03PM3.28m
3:51AM3.01m
4:06PM3.09m
4:50AM2.99m
5:09PM2.93m
5:47AM2.99m
6:11PM2.83m
6:40AM3.01m
7:10PM2.76m
7:30AM3.05m
8:03PM2.75m
8:15AM3.09m
8:52PM2.75m
8:57AM3.13m
9:36PM2.76m
9:36AM3.17m
Low Tide
6:38PM-0.48m
6:47AM0.04m
7:34PM-0.34m
7:46AM0.16m
8:31PM-0.17m
8:48AM0.28m
9:29PM0.00m
9:52AM0.37m
10:28PM0.16m
10:58AM0.41m
11:25PM0.28m
12:01PM0.40m
00:20AM0.38m
1:00PM0.35m
1:12AM0.45m
1:53PM0.28m
2:00AM0.48m
2:41PM0.21m
2:44AM0.50m
3:24PM0.16m
3:23AM0.50m
4:04PM0.11m
Wave
height (m) 
direction
period (s) 
0.5
NNW
3
0.2
N
4
0.3
E
3
1.1
NW
4
0.6
NNW
4
0.6
NW
3
0.1
W
2
0.5
SW
3
1.6
S
5
0.6
SW
4
1.5
S
5
1.3
SSW
5
0.9
WSW
4
0.5
W
4
0.3
SW
5
0.2
SSW
3
0.6
W
4
0.5
W
4
0.3
W
3
0.2
W
2
0.2
WNW
3
0.5
NNW
3
0.6
NW
4
0.6
WNW
3
0.4
WNW
3
0.2
W
3
0.2
NNE
3
0.4
NE
3
0.4
NNE
3
0.8
N
4
1.1
N
5
0.9
N
5
0.8
NNW
5
0.1
NW
3
0.8
SSW
4
clear
cloud
snow showers
clear
clear
clear
part cloud
cloud
mod rain
part cloud
light rain
rain showers
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
cloud
cloud
part cloud
cloud
cloud
clear
part cloud
clear
part cloud
cloud
clear
cloudy
snow shwrs
clear
clear
clear
some clouds
cloudy
mod rain
some clouds
light rain
rain shwrs
some clouds
some clouds
cloudy
some clouds
clear
clear
clear
clear
clear
some clouds
clear
clear
clear
cloudy
cloudy
some clouds
cloudy
cloudy
clear
some clouds
clear
some clouds
cloudy
 km/h
25
NNW
10
N
10
NE
40
NNW
25
NW
25
NW
10
W
25
SW
50
SSW
25
SW
50
SSW
40
WSW
30
WNW
20
WNW
10
SW
10
NW
30
NW
25
WNW
15
NW
15
NW
10
NNW
25
NNW
30
NW
30
WNW
20
WNW
10
NW
15
NNE
20
NE
25
NE
35
N
40
N
30
NNW
30
NNW
5
NW
35
SSW
 mm 
7
5
3
max°C
-3
-3
-1
-8
-7
-9
-4
1
4
5
8
6
0
-1
1
0
-1
-5
-3
-3
-4
-5
-3
-5
-5
-4
-5
-5
-6
-6
-3
-1
-2
0
5
Moonrise
6:49
8:08
9:24
10:34
11:42
12:47
1:51
2:55
4:01
5:06
6:10
Moonset
9:58
10:34
11:02
11:24
11:43
12:01
12:17
12:35
12:56
1:20
1:50
2:27
Sunrise
6:56
6:56
6:58
6:58
7:00
7:00
7:01
7:01
7:03
7:03
7:03
7:05
Sunset
3:55
3:55
3:55
3:55
3:55
3:55
3:56
3:56
3:56
3:56
3:56
3:56
Today's sea temperature in Northwest Harbor, Deer Isle, Penobscot Bay is
7.8° C
(Statistics for 07 Dec 1981-2005 – mean: 7.2 max: 8.3 min: 5.9°C)
Issued (local time): 12 am Sunday 07 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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