Old Harry Sea Conditions and Tide Table

Old Harry 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 07:52 AM and sunset is at 04:19 PM.

Days 1–3 Weather Summary

A light covering of new snow, mostly falling on Sat afternoon. Air temperatures will be below freezing (max -3°C on Thu afternoon, min -6°C on Fri morning). Winds increasing (moderate winds from the N on Thu morning, gales from the NNW by Sat night).

Days 4–6 Weather Summary

A dusting of snow turning to light rain (total 5mm) on Mon night. Icy conditions (max 3°C on Mon night, min -6°C on Tue night). Winds increasing (calm on Mon afternoon, gales from the WSW by Tue afternoon).

Days 7–9 Weather Summary

A dusting of new snow. Temperatures will be below freezing (max 0°C on Thu morning, min -11°C on Thu night). Winds decreasing (near gales from the WSW on Wed morning, fresh winds from the S by Wed night).

Days 10–12 Weather Summary

A light covering of new snow, mostly falling on Sat night. Freeze-thaw conditions (max 1°C on Sat night, min -7°C on Sat morning). Winds decreasing (near gales from the SSW on Sat night, light winds from the NNW by Mon night).

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
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
1:36PM0.81m
11:09PM0.92m
2:09PM0.84m
00:00AM0.91m
2:35PM0.87m
1:03AM0.88m
2:58PM0.90m
2:45AM0.84m
3:31PM0.93m
4:59AM0.84m
4:12PM0.95m
6:33AM0.86m
4:57PM0.97m
7:59AM0.88m
5:42PM0.98m
8:59AM0.88m
6:30PM0.98m
9:47AM0.87m
7:18PM0.98m
10:31AM0.85m
8:06PM0.97m
11:12AM0.83m
8:55PM0.95m
Low Tide
5:23AM0.26m
5:19PM0.65m
5:58AM0.34m
6:24PM0.66m
6:37AM0.44m
8:01PM0.64m
7:24AM0.54m
9:13PM0.57m
8:37AM0.64m
10:11PM0.49m
10:03AM0.70m
11:07PM0.38m
11:09AM0.73m
00:03AM0.28m
12:05PM0.74m
1:01AM0.18m
12:57PM0.70m
2:00AM0.11m
1:43PM0.66m
2:56AM0.06m
2:28PM0.61m
3:46AM0.05m
3:12PM0.57m
4:31AM0.08m
Wave
height (m) 
direction
period (s) 
0.7
NE
5
1.1
NE
5
1.8
NE
8
1.7
NE
9
1.8
NE
8
2.1
NE
8
2.5
ENE
10
2.5
ENE
10
2.2
ENE
10
2.1
NE
10
1.6
NE
10
1.1
NW
4
0.7
NE
7
0.4
NE
6
1
SE
4
1.8
SSE
6
2.1
SSW
6
2
SSW
6
1.7
SW
5
1.4
SW
5
1.1
SW
5
1.4
S
6
1.2
W
4
1.1
W
4
1
W
4
1
WSW
4
0.8
WSW
4
0.6
SW
4
1.3
S
5
1.5
SSE
7
0.9
WNW
4
1.1
NW
4
0.6
NW
3
0.4
SE
9
0.4
SE
9
0.2
ESE
9
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light snow
light snow
cloud
cloud
cloud
cloud
cloud
light snow
rain showers
cloud
cloud
cloud
cloud
cloud
light snow
light snow
cloud
cloud
cloud
cloud
cloud
light snow
snow showers
cloud
cloud
cloud
cloud
light snow
cloud
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
light snow
light snow
cloudy
cloudy
cloudy
cloudy
cloudy
light snow
rain shwrs
cloudy
cloudy
cloudy
cloudy
cloudy
light snow
light snow
cloudy
cloudy
cloudy
cloudy
cloudy
light snow
snow shwrs
cloudy
cloudy
cloudy
cloudy
light snow
cloudy
 km/h
25
N
35
N
50
N
50
NNW
50
N
55
N
60
N
65
NNW
65
NNW
65
NNW
50
NNW
40
NW
25
WNW
5
SW
40
ESE
55
WSW
65
WSW
65
WSW
55
WSW
50
WSW
35
SW
40
W
50
W
45
WNW
45
W
45
W
35
W
35
SW
45
SSE
45
W
45
WNW
50
NW
30
WNW
15
W
15
W
15
NNW
 mm 
3
2
max°C
-4
-3
-3
-5
-6
-5
-4
-4
-4
-3
-2
-1
-1
-2
3
3
-4
-6
-6
-5
-2
0
-5
-9
-10
-10
-8
-7
-4
1
-3
-4
-5
-7
-6
-6
Moonrise
11:06
11:22
11:38
11:55
12:15
12:41
1:16
2:06
3:12
4:31
5:56
7:20
Moonset
10:17
11:31
12:47
2:07
3:31
4:58
6:22
7:35
8:31
9:11
9:40
Sunrise
7:52
7:52
7:52
7:52
7:52
7:52
7:52
7:52
7:52
7:52
7:52
7:52
Sunset
4:19
4:20
4:20
4:21
4:22
4:22
4:23
4:24
4:25
4:27
4:28
4:29
Today's sea temperature in Old Harry is
1.3° C
(Statistics for 25 Dec 1981-2005 – mean: 0.7 max: 2.4 min: -0.4°C)
Issued (local time): 7 am Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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