Head Harbor, Isle au Haut, Penobscot Bay Sea Conditions and Tide Table

Head Harbor, Isle au Haut, 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 — and sunset is at 03:56 PM.

Days 1–4 Weather Summary

Moderate rain (total 12mm), heaviest on Fri morning. Icy conditions (max 12°C on Fri afternoon, min -3°C on Fri night). Winds decreasing (severe gales from the S on Fri afternoon, light winds from the S by Sat afternoon).

Days 5–7 Weather Summary

Mostly dry. Icy conditions (max 2°C on Wed morning, min -7°C on Mon night). Winds decreasing (near gales from the NW on Mon morning, light winds from the NW by Tue afternoon).

Days 8–10 Weather Summary

Moderate rain (total 18mm), heaviest on Fri morning. Freeze-thaw conditions (max 5°C on Thu night, min -1°C on Wed night). Winds increasing (light winds from the S on Wed night, strong winds from the NW by Sat morning).

Days 11–13 Weather Summary

A dusting of new snow. Temperatures will be below freezing (max 0°C on Sat afternoon, min -6°C on Sat night). Winds decreasing (strong winds from the NNW on Sat afternoon, calm by Mon morning).

Thu
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
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
Wave Height Map
High Tide
10:08PM2.49m
10:05AM2.88m
10:45PM2.50m
10:41AM2.90m
11:21PM2.50m
11:17AM2.91m
11:57PM2.50m
11:53AM2.91m
00:34AM2.51m
12:32PM2.89m
1:12AM2.54m
1:13PM2.87m
1:53AM2.58m
1:58PM2.83m
2:38AM2.65m
2:48PM2.77m
3:25AM2.73m
3:43PM2.71m
4:17AM2.83m
4:43PM2.66m
5:13AM2.94m
5:46PM2.65m
6:10AM3.07m
Low Tide
3:56PM0.10m
3:53AM0.44m
4:33PM0.08m
4:29AM0.43m
5:09PM0.07m
5:04AM0.42m
5:44PM0.06m
5:41AM0.41m
6:19PM0.06m
6:20AM0.40m
6:57PM0.06m
7:02AM0.38m
7:36PM0.06m
7:47AM0.36m
8:19PM0.07m
8:38AM0.32m
9:06PM0.09m
9:33AM0.27m
9:56PM0.11m
10:33AM0.19m
10:51PM0.13m
11:36AM0.08m
11:50PM0.14m
12:40PM-0.05m
Wave
height (m) 
direction
period (s) 
1
S
8
1.7
S
6
3
S
8
5
S
9
3.5
SSE
11
2.5
S
12
1.7
S
11
1.6
S
10
2.5
S
8
2
S
8
1.5
S
8
1.6
NW
5
1.6
NW
5
0.6
WNW
4
0.6
WSW
3
0.7
SSW
5
0.5
SSW
6
0.4
SSW
6
0.7
NW
3
0.3
S
8
0.9
SW
4
1.3
SSW
6
0.8
SSW
6
0.8
S
6
1.1
NE
4
1.3
S
9
1
S
9
1.4
NW
4
1
N
4
0.7
S
8
0.5
S
7
0.3
SSE
7
0.2
SSE
7
0.2
S
7
0.8
NNW
4
0.6
NNW
4
part cloud
part cloud
mod rain
mod rain
part cloud
clear
part cloud
cloud
clear
part cloud
part cloud
part cloud
clear
clear
cloud
cloud
part cloud
part cloud
part cloud
part cloud
light rain
light rain
light rain
heavy rain
rain showers
cloud
part cloud
part cloud
clear
clear
clear
part cloud
light snow
part cloud
clear
clear
some clouds
some clouds
mod rain
mod rain
some clouds
clear
some clouds
cloudy
clear
some clouds
some clouds
some clouds
clear
clear
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
light rain
light rain
light rain
heavy rain
rain shwrs
cloudy
some clouds
some clouds
clear
clear
clear
some clouds
light snow
some clouds
clear
clear
 km/h
30
SSW
40
S
55
S
85
S
55
W
45
WNW
30
WNW
45
S
50
SW
40
WNW
45
WNW
50
NW
55
NW
25
WNW
25
WSW
20
W
15
N
20
WNW
35
NNW
10
N
40
SW
30
WSW
20
ENE
15
ESE
40
NNE
15
NNW
30
NNW
50
NNW
40
N
30
N
25
N
10
N
10
S
10
N
35
NNW
25
NW
 mm 
6
6
1
1
4
11
1
max°C
5
9
11
12
5
0
0
6
5
1
-1
-5
-5
-2
0
0
0
2
3
2
4
4
5
5
2
2
3
0
-4
-4
-3
-4
-1
-1
-3
-3
Moonrise
7:07
7:59
8:42
9:17
9:46
10:09
10:30
10:49
11:09
11:29
11:53
12:23
Moonset
3:14
4:10
5:13
6:21
7:30
8:40
9:50
11:01
12:13
1:30
2:50
Sunrise
7:03
7:05
7:05
7:05
7:05
7:07
7:07
7:07
7:07
7:07
7:07
7:09
Sunset
3:56
3:57
3:57
3:59
3:59
4:00
4:00
4:00
4:01
4:01
4:02
4:04
Today's sea temperature in Head Harbor, Isle au Haut, Penobscot Bay is
6.6° C
(Statistics for 18 Dec 1981-2005 – mean: 6.4 max: 7.6 min: 4.7°C)
Issued (local time): 6 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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