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 05:52 AM and sunset is at 05:52 PM.

Days 1–3 Weather Summary

Moderate rain (total 19mm), heaviest on Thu morning. Cool air temperatures (max 16°C on Thu morning, min 9°C on Tue morning). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 15°C on Sun afternoon, min 9°C on Fri night). Winds decreasing (fresh winds from the W on Fri afternoon, light winds from the N by Sat night).

Days 7–9 Weather Summary

Heavy rain (total 20mm), heaviest during Tue night. Very mild (max 15°C on Tue afternoon, min 11°C on Mon afternoon). Wind will be generally light.

Days 10–12 Weather Summary

Light rain (total 8mm), mostly falling on Thu morning. Very mild (max 17°C on Fri afternoon, min 12°C on Thu morning). Wind will be generally light.

Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tuesday
31
Wed
1
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
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
Wave Height Map
High Tide
3:57PM1.46m
4:58AM1.51m
4:42PM1.57m
5:22AM1.52m
5:26PM1.63m
5:45AM1.51m
6:09PM1.64m
6:07AM1.49m
6:54PM1.59m
6:27AM1.48m
7:42PM1.49m
6:46AM1.46m
8:38PM1.35m
7:03AM1.44m
9:55PM1.21m
7:19AM1.41m
7:33AM1.35m
4:19AM1.25m
3:32AM1.30m
12:28PM1.15m
3:44AM1.34m
2:21PM1.26m
4:01AM1.37m
3:24PM1.39m
4:20AM1.41m
Low Tide
10:06AM0.66m
10:19PM0.14m
10:36AM0.50m
10:57PM0.17m
11:08AM0.35m
11:32PM0.25m
11:41AM0.22m
00:06AM0.38m
12:15PM0.13m
00:37AM0.55m
12:52PM0.08m
1:05AM0.73m
1:34PM0.08m
1:30AM0.90m
2:22PM0.13m
1:48AM1.05m
3:25PM0.22m
4:59PM0.30m
6:52PM0.32m
9:02AM1.10m
8:13PM0.29m
9:12AM0.92m
9:08PM0.28m
9:37AM0.73m
9:50PM0.29m
Wave
height (m) 
direction
period (s) 
1.8
E
14
1.6
E
13
1.3
E
13
1.3
E
13
1.3
E
13
1.4
E
14
2.5
SSW
7
3
SW
8
2.1
E
14
1.5
E
13
1.2
E
13
1.9
W
7
1.3
E
14
1
E
13
0.8
E
13
0.7
E
12
0.6
E
12
0.6
E
12
1
E
12
1.1
W
4
1
W
5
0.9
WSW
7
0.9
S
7
1.1
SW
6
1
ESE
5
0.8
E
9
0.9
SE
6
1.2
SSE
6
1.2
NE
4
1.2
ENE
4
0.7
E
11
0.6
E
11
0.7
E
11
0.7
E
11
0.8
E
10
0.8
E
10
1
E
10
1.3
E
11
1.9
SW
7
2.2
NE
6
2.2
ENE
6
2.5
ENE
6
1.7
ENE
6
3
SSW
8
2
SSW
8
2.5
SW
7
2.5
WSW
8
cloud
part cloud
clear
cloud
cloud
mod rain
rain showers
part cloud
light rain
part cloud
clear
part cloud
part cloud
clear
clear
clear
part cloud
cloud
cloud
part cloud
clear
part cloud
clear
rain showers
light rain
cloud
mod rain
light rain
clear
part cloud
rain showers
light rain
part cloud
cloud
rain showers
part cloud
mod rain
heavy rain
rain showers
part cloud
cloud
heavy rain
heavy rain
heavy rain
rain showers
clear
part cloud
cloudy
some clouds
clear
cloudy
cloudy
mod rain
rain shwrs
some clouds
light rain
some clouds
clear
some clouds
some clouds
clear
clear
clear
some clouds
cloudy
cloudy
some clouds
clear
some clouds
clear
rain shwrs
light rain
cloudy
mod rain
light rain
clear
some clouds
rain shwrs
light rain
some clouds
cloudy
rain shwrs
some clouds
mod rain
heavy rain
rain shwrs
some clouds
cloudy
heavy rain
heavy rain
heavy rain
rain shwrs
clear
some clouds
 km/h
15
NE
10
ENE
5
NNW
10
NE
5
NE
10
W
15
W
0
SSW
20
ENE
15
NE
15
SW
15
NE
10
ENE
15
S
10
WNW
10
NE
10
S
10
WNW
20
WSW
25
WSW
10
N
10
E
10
SE
15
SE
10
ENE
10
NE
5
NNE
15
NE
20
NE
15
NNE
10
ENE
5
SSE
10
SW
5
SSW
15
SW
15
W
10
SW
10
S
20
NNE
30
NE
30
NE
25
NNE
20
NE
10
SW
15
WSW
30
W
5
NE
 mm 
6
11
2
8
3
9
3
1
1
1
8
47
4
21
22
14
1
max°C
10
11
10
12
13
13
16
15
13
12
14
10
11
12
11
14
15
12
13
13
12
14
15
13
13
15
12
13
15
14
16
17
15
17
17
16
16
16
15
16
16
12
12
17
16
18
18
Moonrise
4:46
5:14
5:41
6:09
6:39
7:14
7:54
8:43
9:40
10:46
11:55
1:05
2:13
3:18
4:20
5:21
Moonset
4:00
5:05
6:12
7:20
8:31
9:45
10:58
12:09
1:12
2:06
2:50
3:27
3:57
4:25
4:50
Sunrise
5:52
5:52
5:50
5:48
5:47
5:46
5:45
5:43
5:41
5:39
5:39
5:37
5:35
5:35
5:33
5:31
Sunset
5:52
5:52
5:53
5:53
5:54
5:55
5:57
5:58
5:58
5:59
6:00
6:00
6:01
6:01
6:02
6:04
Today's sea temperature in Sirahama (Izu) is
15.2° C
(Statistics for 17 Mar 1981-2005 – mean: 17.6 max: 18.9 min: 15.8°C)
Issued (local time): 8 am Tuesday 17 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest