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 04:37 PM.

Days 1–3 Weather Summary

Light rain (total 3mm), mostly falling on Fri night. Cool air temperatures (max 18°C on Thu morning, min 3°C on Sat night). Winds decreasing (near gales from the W on Thu night, calm by Sat afternoon).

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 14°C on Tue morning, min 6°C on Sun night). Winds increasing (calm on Sun morning, fresh winds from the W by Mon night).

Days 7–9 Weather Summary

Light rain (total 7mm), mostly falling on Fri morning. Very mild (max 12°C on Thu morning, min 4°C on Fri night). Winds increasing (calm on Fri afternoon, strong winds from the W by Fri night).

Days 10–12 Weather Summary

Mostly dry. Mild temperatures (max 7°C on Sun afternoon, min 3°C on Sat night). Winds decreasing (strong winds from the W on Sat afternoon, light winds from the WNW 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
9:00AM1.49m
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
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
1.4
S
8
3
WSW
7
4
WSW
9
3
WSW
8
2
W
8
1.2
E
14
1.1
E
14
1.7
W
6
1.1
E
13
0.8
E
13
0.6
E
13
0.6
E
13
0.5
E
13
1.4
WSW
5
1.9
W
6
2
W
6
1.3
W
6
1
NNE
4
0.8
NE
5
0.8
ENE
7
0.8
E
7
0.7
E
7
0.9
E
8
2.2
NE
6
1.3
ENE
7
3
W
8
3.5
W
8
3.5
W
8
3.5
W
8
3
WSW
8
2.5
W
7
2.3
W
7
2.5
W
7
2.5
W
7
1.3
WSW
6
part cloud
cloud
clear
clear
clear
light rain
light rain
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
cloud
part cloud
part cloud
cloud
part cloud
part cloud
cloud
light rain
rain showers
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
some clouds
cloudy
clear
clear
clear
light rain
light rain
some clouds
clear
clear
clear
clear
some clouds
clear
clear
clear
some clouds
cloudy
some clouds
some clouds
cloudy
some clouds
some clouds
cloudy
light rain
rain shwrs
clear
clear
clear
clear
clear
some clouds
clear
clear
clear
some clouds
 km/h
10
WNW
15
WSW
25
W
35
W
35
W
10
E
10
E
5
NW
15
WNW
10
NNE
5
ESE
10
NW
10
NW
10
SW
25
W
30
W
30
W
10
NE
15
NNE
15
ENE
15
N
10
NE
10
ENE
15
NNE
25
NNE
5
NNW
30
W
40
W
50
W
40
W
35
W
35
W
30
W
35
W
40
W
15
WNW
 mm 
1
2
5
2
max°C
18
17
14
9
10
6
5
6
4
9
10
7
13
13
12
14
13
11
11
10
8
12
11
10
9
11
9
6
6
4
6
7
5
7
7
5
Moonrise
10:14
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
Sunrise
6:48
6:48
6:48
6:48
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
18.4° C
(Statistics for 25 Dec 1981-2005 – mean: 19.3 max: 20.4 min: 17.9°C)
Issued (local time): 2 am Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest