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

Days 1–3 Weather Summary

Light rain (total 8mm), mostly falling on Fri afternoon. Icy conditions (max 12°C on Fri morning, min -3°C on Fri night). Winds decreasing (severe gales from the S on Fri afternoon, light winds from the SW by Sat afternoon).

Days 4–6 Weather Summary

A dusting of new snow. Icy conditions (max 5°C on Sun morning, min -6°C on Mon morning). Winds decreasing (near gales from the NW on Mon morning, light winds from the SW by Mon night).

Days 7–9 Weather Summary

Moderate rain (total 13mm), heaviest on Thu night. Freeze-thaw conditions (max 8°C on Fri morning, min -8°C on Wed night). Winds decreasing (near gales from the NW on Wed morning, light winds from the WNW by Wed night).

Days 10–12 Weather Summary

Light rain (total 3mm), mostly falling on Sun night. Freeze-thaw conditions (max 4°C on Sun night, min -3°C on Tue morning). Winds increasing (light winds from the NE on Sat night, strong winds from the N by Mon night).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
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
9:28AM2.86m
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
Wave
height (m) 
direction
period (s) 
0.8
S
8
1
S
8
1.7
S
6
2.5
S
7
5.5
S
10
3.5
S
11
2.5
S
12
1.7
S
11
1.6
S
10
2.5
S
9
2
S
9
1.6
S
8
1.6
NW
5
1.6
NW
5
0.6
WNW
3
0.8
SW
4
2.1
SSW
6
1.4
SSW
8
1.6
NW
5
1.5
NNW
5
0.9
NNW
4
0.3
W
2
0.9
SW
4
1.3
SSW
6
2.5
SSW
8
2.1
S
9
1.6
S
10
1
S
10
0.8
S
9
0.6
S
9
0.5
S
8
0.5
S
8
1
S
4
0.6
S
5
0.6
S
5
1
N
4
part cloud
part cloud
part cloud
light rain
light rain
part cloud
clear
clear
cloud
clear
part cloud
part cloud
clear
clear
clear
cloud
light snow
part cloud
clear
clear
part cloud
part cloud
cloud
mod rain
light rain
part cloud
clear
cloud
part cloud
part cloud
cloud
cloud
light rain
light rain
cloud
part cloud
some clouds
some clouds
some clouds
light rain
light rain
some clouds
clear
clear
cloudy
clear
some clouds
some clouds
clear
clear
clear
cloudy
light snow
some clouds
clear
clear
some clouds
some clouds
cloudy
mod rain
light rain
some clouds
clear
cloudy
some clouds
some clouds
cloudy
cloudy
light rain
light rain
cloudy
some clouds
 km/h
15
SSW
30
SSW
35
S
55
S
85
S
60
W
50
WNW
30
W
45
SSW
50
SW
45
WNW
50
WNW
55
NW
55
NW
25
WNW
40
SW
50
SW
35
WNW
55
NW
55
NNW
35
NNW
25
SW
30
WSW
40
SW
50
SW
30
WNW
35
NW
30
N
20
N
10
NE
10
ENE
15
SE
35
S
15
NNW
30
N
45
N
 mm 
3
5
9
4
2
1
max°C
4
5
9
12
12
5
0
1
6
5
2
-1
-5
-5
-2
1
1
1
-5
-6
-7
-2
2
7
8
8
1
-2
-1
-1
0
2
4
2
1
-1
Moonrise
6:08
7:07
7:59
8:42
9:17
9:46
10:09
10:30
10:49
11:09
11:29
11:53
Moonset
2:28
3:14
4:10
5:13
6:21
7:30
8:40
9:50
11:01
12:13
1:30
Sunrise
7:03
7:03
7:05
7:05
7:05
7:05
7:07
7:07
7:07
7:07
7:07
7:07
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): 12 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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