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 04:34 PM.

Days 1–4 Weather Summary

Mostly dry. Cool air temperatures (max 13°C on Mon afternoon, min 8°C on Tue night). Wind will be generally light.

Days 5–7 Weather Summary

Heavy rain (total 36mm), heaviest during Sat afternoon. Cool air temperatures (max 17°C on Sat afternoon, min 10°C on Thu afternoon). Wind will be generally light.

Days 8–10 Weather Summary

Heavy rain (total 39mm), heaviest during Sun afternoon. Very mild (max 16°C on Sun afternoon, min 7°C on Mon night). Winds decreasing (fresh winds from the NNE on Mon morning, calm by Tue afternoon).

Days 11–13 Weather Summary

Light rain (total 6mm), mostly falling on Thu afternoon. Very mild (max 11°C on Thu morning, min 6°C on Fri night). Winds increasing (calm on Wed afternoon, strong winds from the W by Sat afternoon).

Mon
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sat
27
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
1:08PM1.42m
3:32AM1.24m
1:45PM1.46m
4:18AM1.33m
2:21PM1.50m
4:56AM1.40m
2:57PM1.52m
5:32AM1.47m
3:32PM1.54m
6:07AM1.53m
4:06PM1.54m
6:42AM1.56m
4:41PM1.54m
7:17AM1.58m
5:16PM1.53m
7:52AM1.57m
5:55PM1.51m
8:26AM1.54m
6:38PM1.47m
9:00AM1.49m
7:28PM1.41m
9:33AM1.45m
8:29PM1.33m
10:08AM1.41m
Low Tide
8:24PM0.47m
7:45AM1.04m
9:01PM0.34m
8:37AM1.07m
9:36PM0.23m
9:24AM1.09m
10:10PM0.13m
10:08AM1.09m
10:43PM0.06m
10:49AM1.09m
11:16PM0.01m
11:29AM1.09m
11:51PM-0.01m
12:08PM1.09m
00:26AM0.01m
12:47PM1.07m
1:03AM0.06m
1:28PM1.03m
1:42AM0.16m
2:13PM0.98m
2:24AM0.29m
3:07PM0.90m
3:10AM0.45m
Wave
height (m) 
direction
period (s) 
2.2
W
7
1.4
W
7
1
W
6
0.9
W
6
1.9
W
6
1.8
W
6
1.9
W
6
1.3
W
5
1.1
NE
4
1
NE
4
1.1
ENE
15
1.2
ENE
14
1
E
14
0.7
E
13
1
ESE
7
2
SSE
7
1.1
SE
7
0.9
SE
7
1.3
SSE
6
1.1
SE
7
2.2
NE
6
2.5
ENE
7
2.5
ESE
11
2.1
ESE
11
1.6
ESE
11
1.3
E
11
1.2
ENE
13
1
ENE
13
1.2
ENE
14
1
E
15
1
E
14
1.1
E
14
1.2
E
13
1.2
E
13
1.4
E
14
2.2
W
6
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
heavy rain
rain showers
part cloud
light rain
heavy rain
heavy rain
light rain
part cloud
cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
cloud
light rain
rain showers
part cloud
cloud
part cloud
clear
clear
some clouds
some clouds
clear
clear
clear
some clouds
some clouds
clear
some clouds
some clouds
some clouds
clear
some clouds
heavy rain
rain shwrs
some clouds
light rain
heavy rain
heavy rain
light rain
some clouds
cloudy
some clouds
some clouds
some clouds
cloudy
some clouds
some clouds
cloudy
light rain
rain shwrs
some clouds
cloudy
some clouds
clear
 km/h
10
W
10
NE
5
E
10
WSW
20
WNW
20
W
30
W
10
NW
20
NE
15
NE
15
NNE
15
NNE
10
NE
5
N
5
ESE
15
SSW
10
W
5
W
10
SW
10
SW
30
NNE
30
NNE
25
NNE
20
NE
5
NE
5
WNW
10
ENE
0
WNW
10
WNW
5
NNW
10
W
15
N
5
SSE
10
NE
15
W
40
W
 mm 
17
18
1
13
21
5
5
1
max°C
13
12
11
11
8
13
13
12
11
12
11
14
15
14
16
17
16
17
16
16
12
11
9
9
9
10
9
10
9
11
9
8
10
10
8
10
Moonrise
3:10
4:09
5:08
6:06
7:01
7:51
8:34
9:12
9:45
10:14
10:41
11:07
Moonset
1:39
2:12
2:50
3:34
4:25
5:22
6:23
7:26
8:28
9:31
10:33
Sunrise
6:43
6:43
6:45
6:45
6:46
6:46
6:47
6:47
6:48
6:48
6:48
6:48
Sunset
4:34
4:34
4:34
4:35
4:35
4:36
4:36
4:37
4:37
4:37
4:37
4:38
Today's sea temperature in Sirahama (Izu) is
19.2° C
(Statistics for 15 Dec 1981-2005 – mean: 19.9 max: 22.2 min: 18.5°C)
Issued (local time): 2 pm Monday 15 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest