Sirahama (Izu) Sea Conditions and Tide Table

Sirahama (Izu) 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 04:37 PM.

Days 1–4 Weather Summary

Light rain (total 6mm), mostly falling on Thu afternoon. Cool air temperatures (max 17°C on Thu afternoon, min 3°C on Sat night). Winds decreasing (strong winds from the W on Thu night, calm by Sun morning).

Days 5–7 Weather Summary

Mostly dry. Cool air temperatures (max 14°C on Tue afternoon, min 7°C on Sun afternoon). Winds increasing (calm on Mon morning, fresh winds from the W by Mon night).

Days 8–10 Weather Summary

Mostly dry. Very mild (max 11°C on Thu morning, min 7°C on Wed night). Wind will be generally light.

Days 11–13 Weather Summary

Mostly dry. Very mild (max 10°C on Sat afternoon, min 3°C on Sun night). Winds decreasing (strong winds from the W on Sat night, calm by Tue morning).

Thu
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
Tue
6
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
7:28PM1.41m
9:33AM1.45m
8:29PM1.33m
10:08AM1.41m
9:49PM1.24m
10:44AM1.39m
11:36PM1.20m
11:24AM1.39m
1:37AM1.24m
12:12PM1.41m
3:10AM1.35m
1:05PM1.45m
4:16AM1.46m
2:01PM1.49m
5:12AM1.55m
3:00PM1.55m
5:55AM1.60m
3:55PM1.60m
6:34AM1.61m
4:47PM1.63m
7:11AM1.59m
5:37PM1.61m
7:45AM1.56m
Low Tide
2:13PM0.98m
2:24AM0.29m
3:07PM0.90m
3:10AM0.45m
4:09PM0.80m
4:04AM0.63m
5:20PM0.66m
5:08AM0.81m
6:31PM0.50m
6:22AM0.96m
7:37PM0.31m
7:40AM1.07m
8:36PM0.13m
8:37AM1.13m
9:33PM-0.01m
9:51AM1.15m
10:23PM-0.12m
10:42AM1.13m
11:11PM-0.16m
11:27AM1.07m
11:56PM-0.13m
12:10PM1.00m
00:38AM-0.05m
Wave
height (m) 
direction
period (s) 
1.3
S
8
3
WSW
7
3.5
WSW
8
3
WSW
8
2.1
WSW
8
1.3
E
14
1.1
E
14
1.9
W
6
1.1
E
13
0.8
E
13
0.7
E
13
0.6
E
13
0.7
E
13
1.3
WSW
5
1.7
WSW
6
2
W
6
1.3
W
6
1.3
NE
5
1.2
NE
5
0.9
ENE
8
0.6
ENE
7
0.5
E
7
0.7
E
8
1
E
8
1.3
NE
4
1.3
E
8
1.2
E
9
1.3
E
9
2.5
W
6
1.9
W
7
1.9
W
7
1.7
W
6
1.2
WSW
6
0.8
E
10
0.6
E
10
1.6
SSW
10
rain showers
part cloud
clear
clear
light rain
light rain
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
cloud
part cloud
part cloud
cloud
clear
clear
part cloud
part cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
cloud
cloud
clear
rain shwrs
some clouds
clear
clear
light rain
light rain
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloudy
some clouds
cloudy
some clouds
some clouds
cloudy
clear
clear
some clouds
some clouds
some clouds
cloudy
some clouds
clear
some clouds
some clouds
clear
some clouds
cloudy
cloudy
clear
 km/h
10
WSW
35
W
35
W
30
W
10
ENE
10
E
5
WSW
15
WNW
5
NNE
5
SE
10
NNW
0
N
15
W
25
W
30
W
25
W
15
NNE
20
NNE
15
NE
10
NNE
5
NNW
5
ESE
10
N
15
NNE
20
NE
15
NNE
5
NNW
10
WNW
40
W
10
SSW
20
W
10
WNW
5
NW
5
E
10
NW
10
NW
 mm 
3
1
2
max°C
17
14
10
9
7
5
6
4
10
10
8
13
13
12
12
14
11
10
10
7
11
11
9
10
9
8
11
10
8
8
9
5
7
8
6
10
Moonrise
10:41
11:07
11:34
12:03
12:37
1:18
2:08
3:10
4:20
5:35
6:48
Moonset
9:31
10:33
11:37
12:43
1:53
3:07
4:22
5:36
6:43
7:39
8:24
9:01
Sunrise
6:48
6:48
6:48
6:50
6:50
6:50
6:50
6:50
6:50
6:50
6:50
6:50
Sunset
4:37
4:38
4:38
4:39
4:40
4:40
4:42
4:43
4:44
4:44
4:45
4:45
Today's sea temperature in Sirahama (Izu) is
18.3° C
(Statistics for 25 Dec 1981-2005 – mean: 19.2 max: 20.4 min: 17.9°C)
Issued (local time): 2 pm Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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