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 07:05 AM and sunset is at 03:56 PM.

Days 1–3 Weather Summary

Light rain (total 9mm), mostly falling on Fri afternoon. Icy conditions (max 12°C on Fri afternoon, min -3°C on Fri night). Winds decreasing (gales from the S on Fri afternoon, light winds from the SSW by Sat afternoon).

Days 4–6 Weather Summary

A dusting of new snow. Icy conditions (max 1°C on Tue morning, min -9°C on Mon night). Winds decreasing (strong winds from the NW on Mon morning, light winds from the SW by Mon night).

Days 7–9 Weather Summary

Moderate rain (total 16mm), heaviest on Fri morning. Freeze-thaw conditions (max 7°C on Fri morning, min -4°C on Wed night). Winds increasing (light winds from the NW on Wed night, strong winds from the NW by Fri night).

Days 10–12 Weather Summary

Mostly dry. Temperatures will be below freezing (max -3°C on Sat night, min -8°C on Mon night). Winds decreasing (fresh winds from the NNW on Sun afternoon, light winds from the N by Mon afternoon).

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
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
10:13AM3.20m
10:53PM2.77m
10:49AM3.22m
11:29PM2.77m
11:25AM3.23m
00:05AM2.77m
12:01PM3.23m
00:42AM2.79m
12:40PM3.21m
1:20AM2.82m
1:21PM3.18m
2:01AM2.87m
2:06PM3.14m
2:46AM2.94m
2:56PM3.08m
3:33AM3.03m
3:51PM3.01m
4:25AM3.14m
4:51PM2.96m
5:21AM3.27m
5:54PM2.94m
6:18AM3.40m
7:00PM2.96m
Low Tide
4:41PM0.09m
4:37AM0.48m
5:17PM0.08m
5:12AM0.46m
5:52PM0.07m
5:49AM0.45m
6:27PM0.07m
6:28AM0.44m
7:05PM0.07m
7:10AM0.43m
7:44PM0.07m
7:55AM0.40m
8:27PM0.08m
8:46AM0.36m
9:14PM0.10m
9:41AM0.30m
10:04PM0.12m
10:41AM0.21m
10:59PM0.15m
11:44AM0.09m
11:58PM0.16m
12:48PM-0.06m
Wave
height (m) 
direction
period (s) 
1.7
S
6
3
S
7
1.3
WSW
5
1.2
W
5
0.6
WSW
4
1.2
SSW
4
1.3
SSW
5
1.1
WSW
5
1
W
5
0.9
NW
4
1.1
NW
4
0.3
NW
4
0.4
SW
3
0.9
SSW
4
0.6
NW
3
0.7
NW
4
0.7
NNW
4
0.2
NNW
3
0.9
SW
4
0.4
SW
3
0.3
ESE
2
0.8
SE
4
0.5
SSW
3
1.1
NW
5
0.7
NW
4
0.4
NW
4
0.5
N
4
0.8
NNW
3
0.9
NNW
4
0.6
NNW
4
0.3
N
2
0.2
N
2
0.3
NNE
2
0.5
NNE
3
0.6
NNE
3
light rain
light rain
part cloud
clear
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
cloud
light snow
part cloud
part cloud
clear
part cloud
cloud
part cloud
rain showers
heavy rain
light rain
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
clear
clear
light rain
light rain
some clouds
clear
cloudy
some clouds
some clouds
some clouds
clear
clear
clear
clear
cloudy
light snow
some clouds
some clouds
clear
some clouds
cloudy
some clouds
rain shwrs
heavy rain
light rain
clear
clear
some clouds
clear
clear
clear
clear
clear
some clouds
cloudy
clear
clear
 km/h
45
S
70
S
35
W
40
WNW
20
WNW
45
SSW
40
SW
40
WNW
40
WNW
40
NW
40
NW
15
WNW
20
SW
30
SW
25
NNW
30
NNW
30
NNW
5
NW
35
SW
15
WNW
15
E
30
SE
20
WSW
35
NW
25
NNW
20
NNW
20
N
30
NNW
35
NNW
25
NNW
15
N
15
N
20
NNE
25
NNE
30
NNE
 mm 
4
5
3
11
2
max°C
10
12
5
-1
1
5
5
0
-3
-6
-6
-3
1
1
-1
1
1
0
3
2
2
7
5
4
0
0
-3
-4
-4
-6
-4
-4
-5
-5
-5
Moonrise
7:09
8:00
8:44
9:19
9:47
10:10
10:31
10:50
11:09
11:29
11:53
12:23
Moonset
3:13
4:09
5:12
6:20
7:30
8:40
9:50
11:01
12:14
1:30
2:51
Sunrise
7:05
7:05
7:07
7:07
7:07
7:07
7:07
7:09
7:09
7:09
7:09
7:09
Sunset
3:56
3:57
3:57
3:59
3:59
4:00
4:00
4:00
4:01
4:02
4:02
4:04
Today's sea temperature in Northwest Harbor, Deer Isle, Penobscot Bay is
5.5° C
(Statistics for 19 Dec 1981-2005 – mean: 6.3 max: 7.6 min: 4.7°C)
Issued (local time): 12 am Friday 19 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest