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 06:48 AM and sunset is at 04:38 PM.

Days 1–3 Weather Summary

Light rain (total 3mm), mostly falling on Fri night. Cool air temperatures (max 10°C on Sun morning, min 3°C on Sat night). Winds decreasing (strong winds from the W on Fri morning, light winds from the ENE by Sun morning).

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 13°C on Tue morning, min 5°C on Wed night). Winds decreasing (fresh winds from the W on Mon night, calm by Wed afternoon).

Days 7–9 Weather Summary

Some drizzle, heaviest during Sat morning. Mild temperatures (max 9°C on Thu morning, min 5°C on Thu night). Winds decreasing (strong winds from the W on Thu afternoon, calm by Sat morning).

Days 10–12 Weather Summary

Moderate rain (total 10mm), heaviest on Sun night. Very mild (max 10°C on Mon morning, min 1°C on Tue night). Winds increasing (calm on Sun morning, strong winds from the W by Mon afternoon).

Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
Tuesday
6
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
9:33AM1.45m
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
6:26PM1.56m
Low Tide
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
12:53PM0.93m
1:17AM0.09m
Wave
height (m) 
direction
period (s) 
3.5
WSW
8
3
WSW
9
2.1
WSW
8
1.3
E
14
1.4
E
14
1.7
W
6
1.1
E
13
0.8
E
14
0.6
E
13
0.7
E
13
0.9
E
13
1.5
W
5
1.9
W
6
1.8
WSW
6
2.1
W
6
1.2
W
6
0.9
W
6
1.3
W
6
3
W
7
3
W
7
2.4
W
7
1.5
W
7
2.4
W
7
1.5
W
7
0.9
ENE
7
0.7
E
10
0.8
W
6
0.8
W
6
0.8
E
10
0.8
WSW
4
2
SW
7
3
WSW
8
2.5
WSW
8
2.3
WSW
8
2.5
W
7
2.2
W
7
clear
clear
light rain
light rain
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
light rain
part cloud
part cloud
clear
clear
rain showers
part cloud
clear
clear
clear
clear
clear
clear
clear
light rain
light rain
clear
clear
clear
clear
some clouds
clear
clear
clear
some clouds
cloudy
cloudy
some clouds
clear
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
light rain
some clouds
some clouds
clear
clear
rain shwrs
some clouds
clear
clear
clear
clear
clear
 km/h
40
W
35
W
10
E
10
ENE
10
W
10
NW
10
NNE
5
E
5
NNW
10
WNW
20
WSW
35
W
35
W
35
W
25
W
5
N
5
ENE
15
WNW
30
W
45
W
20
WNW
5
WSW
10
NW
15
ENE
5
ESE
5
ESE
10
N
5
NW
15
W
15
W
35
W
40
W
30
W
25
W
40
WNW
15
WNW
 mm 
1
2
1
10
max°C
9
9
6
4
7
4
10
10
8
11
11
11
13
13
11
11
11
8
9
9
6
8
9
6
6
7
6
9
9
8
10
9
7
7
6
2
Moonrise
10:41
11:07
11:34
12:03
12:37
1:18
2:08
3:10
4:20
5:35
6:48
7:58
Moonset
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
4:38
4:38
4:39
4:40
4:40
4:42
4:43
4:44
4:44
4:45
4:45
4:46
Today's sea temperature in Sirahama (Izu) is
18.3° C
(Statistics for 26 Dec 1981-2005 – mean: 19.2 max: 20.4 min: 17.9°C)
Issued (local time): 2 am Friday 26 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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