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 06:48 AM and sunset is at 06:39 PM.

Days 1–3 Weather Summary

Heavy rain (total 49mm), heaviest during Mon morning. Low air temperatures (max 9°C on Sun afternoon, min 2°C on Sat afternoon). Winds decreasing (fresh winds from the SSW on Sun night, light winds from the NNW by Mon night).

Days 4–6 Weather Summary

Heavy rain (total 22mm), heaviest during Thu night. Low air temperatures (max 7°C on Tue afternoon, min 2°C on Tue night). Wind will be generally light.

Days 7–9 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 3°C on Sat afternoon, min -5°C on Fri night). Winds decreasing (strong winds from the WNW on Fri afternoon, light winds from the NE by Sun night).

Days 10–12 Weather Summary

Heavy rain (total 22mm), heaviest during Wed afternoon. Later becoming colder with a dusting of snow on Thu morning. Mild temperatures (max 7°C on Tue afternoon, min 1°C on Thu morning). Winds increasing (calm on Tue afternoon, near gales from the E by Wed morning).

Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
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
12:41PM3.21m
00:55AM3.18m
1:15PM3.13m
1:27AM3.16m
1:50PM3.02m
1:59AM3.13m
2:27PM2.90m
2:33AM3.07m
3:06PM2.77m
3:12AM3.00m
3:50PM2.64m
3:57AM2.93m
4:40PM2.54m
4:48AM2.88m
5:37PM2.47m
5:47AM2.87m
6:40PM2.49m
6:50AM2.92m
7:42PM2.61m
7:53AM3.05m
8:38PM2.80m
8:51AM3.23m
9:28PM3.06m
Low Tide
6:30AM0.05m
6:47PM0.10m
7:04AM0.05m
7:18PM0.19m
7:39AM0.09m
7:49PM0.29m
8:15AM0.15m
8:23PM0.39m
8:53AM0.23m
9:00PM0.50m
9:35AM0.33m
9:43PM0.61m
10:24AM0.42m
10:31PM0.69m
11:19AM0.48m
11:28PM0.73m
12:21PM0.48m
00:30AM0.70m
1:24PM0.39m
1:35AM0.57m
2:22PM0.24m
2:35AM0.36m
3:14PM0.05m
3:30AM0.10m
Wave
height (m) 
direction
period (s) 
0.4
S
3
0.6
S
4
0.6
S
4
0.6
S
4
0.7
S
4
1.2
S
5
1.2
S
5
0.8
S
4
0.7
NNW
4
0.7
N
4
0.5
N
3
0.3
S
4
0.3
S
3
0.4
SE
2
0.4
SSE
3
0.5
SE
3
0.7
SE
4
0.4
SSE
4
0.9
WNW
4
1.2
W
4
1
W
4
0.9
WNW
4
0.9
WNW
4
0.2
WSW
3
0.2
WNW
3
0.2
WNW
3
0.2
NNE
2
0.3
S
3
0.4
S
3
0.5
S
4
0.3
S
3
0.2
S
4
0.4
ESE
3
1.4
ESE
5
1.3
ESE
5
0.7
E
4
part cloud
cloud
part cloud
cloud
cloud
light rain
heavy rain
mod rain
mod rain
cloud
cloud
clear
part cloud
light rain
cloud
cloud
cloud
heavy rain
light snow
light snow
light snow
cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
cloud
cloud
light rain
cloud
light rain
light rain
mod rain
light rain
some clouds
cloudy
some clouds
cloudy
cloudy
light rain
heavy rain
mod rain
mod rain
cloudy
cloudy
clear
some clouds
light rain
cloudy
cloudy
cloudy
heavy rain
light snow
light snow
light snow
cloudy
some clouds
clear
some clouds
some clouds
some clouds
clear
cloudy
cloudy
light rain
cloudy
light rain
light rain
mod rain
light rain
 km/h
20
S
25
S
25
SSW
25
S
25
S
35
S
30
SSW
20
S
20
NNW
20
N
15
N
10
ENE
10
E
15
ESE
15
SE
20
SE
25
SE
5
ENE
35
WNW
45
WNW
40
WNW
35
WNW
40
WNW
15
WNW
15
NNW
10
WSW
5
NE
10
SSE
20
S
20
S
5
SSW
5
SSE
25
E
50
E
40
ENE
25
ENE
 mm 
2.0
30
8
9
1.0
21
5
1.0
4
8
4
max°C
3
3
8
8
9
8
7
7
7
4
7
6
3
3
4
5
6
6
0
1
-3
-2
3
2
0
3
2
4
5
5
5
7
5
5
5
4
Moonrise
8:19
9:23
10:28
11:34
12:40
1:43
2:42
3:32
4:13
4:47
5:14
Moonset
7:13
7:29
7:47
8:08
8:34
9:07
9:48
10:41
11:44
12:56
2:13
3:32
Sunrise
6:48
6:46
6:43
6:41
6:39
6:37
6:37
6:35
6:33
6:31
6:28
6:26
Sunset
6:39
6:40
6:42
6:44
6:45
6:45
6:46
6:49
6:50
6:51
6:52
6:52
Today's sea temperature in Northwest Harbor, Deer Isle, Penobscot Bay is 1.4 °C (Statistics for 15 Mar 1981-2005 – mean: 3.1 max: 4.5 min: 1.9°C)
Issued (local time): 7 am Saturday 15 Mar 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest