Katsuura Sea Conditions and Tide Table

Katsuura 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 06:39 AM and sunset is at 04:27 PM.

Days 1–3 Weather Summary

Mostly dry. Cool air temperatures (max 12°C on Mon morning, min 8°C on Mon night). Winds decreasing (fresh winds from the NNW on Mon morning, calm by Wed afternoon).

Days 4–6 Weather Summary

Light rain (total 3mm), mostly falling on Sat morning. Cool air temperatures (max 19°C on Sat afternoon, min 9°C on Thu morning). Winds increasing (light winds from the SSE on Thu night, fresh winds from the S by Sat night).

Days 7–9 Weather Summary

Heavy rain (total 95mm), heaviest during Sun night. Very mild (max 19°C on Sun morning, min 7°C on Mon night). Winds decreasing (strong winds from the SSE on Sun afternoon, light winds from the N by Tue night).

Days 10–12 Weather Summary

Heavy rain (total 37mm), heaviest during Wed night. Very mild (max 17°C on Thu morning, min 8°C on Fri night). Winds increasing (calm on Wed morning, near gales from the S by Wed night).

Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
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
12:24PM1.28m
3:08AM1.10m
1:02PM1.30m
3:55AM1.18m
1:40PM1.33m
4:33AM1.24m
2:18PM1.36m
5:07AM1.27m
2:55PM1.39m
5:40AM1.29m
3:32PM1.42m
6:13AM1.30m
4:09PM1.43m
6:45AM1.30m
4:45PM1.43m
7:17AM1.29m
5:23PM1.40m
7:50AM1.29m
6:03PM1.35m
8:22AM1.29m
6:49PM1.26m
8:56AM1.30m
7:45PM1.16m
Low Tide
6:14AM0.89m
7:57PM0.41m
7:22AM0.95m
8:35PM0.30m
8:18AM0.98m
9:12PM0.21m
9:04AM1.00m
9:47PM0.14m
9:44AM1.00m
10:22PM0.10m
10:19AM0.99m
10:57PM0.07m
10:52AM0.98m
11:32PM0.06m
11:27AM0.96m
00:07AM0.08m
12:05PM0.95m
00:41AM0.13m
12:48PM0.92m
1:15AM0.20m
1:39PM0.89m
1:50AM0.30m
2:38PM0.83m
2:28AM0.43m
Wave
height (m) 
direction
period (s) 
1.7
S
9
1.1
S
9
1
SSE
8
1.1
E
10
1
ENE
12
1.1
ENE
13
1
SSE
9
0.9
ENE
11
1
SSE
8
1.1
ENE
17
1.5
ENE
16
1.1
ENE
15
1.1
ENE
14
1
E
13
0.9
ENE
12
1.2
ENE
12
1.5
SSE
6
1.4
SE
6
2.5
SSE
7
3
SSE
8
4.5
SSE
10
4.5
SSE
12
4
SSE
12
3.5
SE
12
3
SE
12
2.5
SE
11
1.8
ESE
10
1.5
ESE
10
1.4
SE
10
2.3
SSE
6
3
SSE
8
3
S
8
2.1
SSE
11
1.8
E
14
1.7
E
14
1.6
E
13
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
clear
clear
clear
rain showers
clear
rain showers
light rain
heavy rain
heavy rain
rain showers
clear
rain showers
clear
clear
part cloud
part cloud
light rain
rain showers
rain showers
part cloud
rain showers
cloud
cloud
part cloud
clear
clear
some clouds
some clouds
some clouds
clear
clear
some clouds
some clouds
some clouds
some clouds
cloudy
clear
clear
clear
rain shwrs
clear
rain shwrs
light rain
heavy rain
heavy rain
rain shwrs
clear
rain shwrs
clear
clear
some clouds
some clouds
light rain
rain shwrs
rain shwrs
some clouds
rain shwrs
cloudy
cloudy
some clouds
 km/h
30
NNW
15
NNW
15
NNE
20
N
5
NNW
10
NW
10
N
5
SSW
15
NNW
20
NNE
20
NE
5
SSE
10
NNW
10
WSW
10
SW
20
SW
30
SSW
25
SSW
40
SSE
45
SSE
50
SSE
25
NW
35
WSW
15
NNW
45
NNW
30
N
15
N
5
NE
20
S
45
S
35
SW
45
SW
10
NNE
15
N
15
NNW
20
N
 mm 
1
2
2
11
75
2
5
2
27
6
2
max°C
12
12
10
10
10
11
11
12
12
11
12
13
13
14
16
18
19
19
19
19
19
19
18
14
9
10
8
11
13
16
17
16
13
11
10
10
Moonrise
2:07
3:05
4:04
5:03
6:02
6:57
7:46
8:30
9:07
9:40
10:09
10:35
Moonset
1:05
1:33
2:05
2:43
3:27
4:19
5:16
6:17
7:19
8:22
9:25
10:28
Sunrise
6:39
6:39
6:39
6:39
6:41
6:41
6:41
6:43
6:43
6:43
6:43
6:45
Sunset
4:27
4:28
4:28
4:28
4:29
4:29
4:30
4:30
4:30
4:30
4:31
4:31
Today's sea temperature in Katsuura is
20.1° C
(Statistics for 15 Dec 1981-2005 – mean: 19.5 max: 21.9 min: 18.1°C)
Issued (local time): 2 am Monday 15 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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