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 — and sunset is at 04:28 PM.

Days 1–4 Weather Summary

Some drizzle, heaviest during Fri night. Cool air temperatures (max 19°C on Sat morning, min 9°C on Wed night). Winds decreasing (fresh winds from the WSW on Wed night, calm by Thu night).

Days 5–7 Weather Summary

Heavy rain (total 27mm), heaviest during Sun morning. Cool air temperatures (max 19°C on Sat afternoon, min 7°C on Mon night). Winds increasing (light winds from the NW on Sun night, strong winds from the NNE by Mon night).

Days 8–10 Weather Summary

Moderate rain (total 16mm), heaviest on Fri morning. Very mild (max 14°C on Wed night, min 7°C on Tue night). Winds decreasing (strong winds from the NNE on Tue afternoon, calm by Wed afternoon).

Days 11–13 Weather Summary

Light rain (total 6mm), mostly falling on Fri afternoon. Very mild (max 11°C on Sat morning, min 8°C on Fri afternoon). Winds decreasing (fresh winds from the NNE on Fri afternoon, calm by Mon afternoon).

Wed
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Mon
29
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
1:40PM1.33m
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
9:30AM1.30m
9:03PM1.05m
10:07AM1.31m
10:56PM0.99m
10:48AM1.31m
Low Tide
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
3:48PM0.75m
3:11AM0.59m
5:04PM0.63m
4:05AM0.75m
Wave
height (m) 
direction
period (s) 
1.4
SW
6
1.6
SW
6
1.4
NE
9
1.3
ENE
16
1.2
ENE
15
1
ENE
14
0.9
ENE
13
1.5
ENE
12
1.4
ESE
7
1.5
SSE
6
1.8
SSE
6
2.1
SSE
7
2.1
SSE
7
1.7
SE
8
2.1
SE
8
3
ENE
8
3.5
ENE
10
3
ENE
10
3
ENE
10
3
ENE
11
2.5
ENE
11
2.5
ENE
12
2.5
ENE
13
2.4
ENE
13
2.3
ENE
13
2.5
ENE
13
2.5
ENE
12
2.4
E
12
3
E
12
2.5
E
11
3
ENE
10
2.5
ENE
10
2.3
ENE
11
2.2
ENE
11
2.2
ENE
11
2.2
ENE
11
part cloud
clear
clear
cloud
cloud
cloud
part cloud
rain showers
cloud
cloud
rain showers
mod rain
rain showers
cloud
light rain
light rain
light rain
rain showers
part cloud
part cloud
part cloud
part cloud
light rain
rain showers
part cloud
light rain
mod rain
light rain
light rain
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
some clouds
clear
clear
cloudy
cloudy
cloudy
some clouds
rain shwrs
cloudy
cloudy
rain shwrs
mod rain
rain shwrs
cloudy
light rain
light rain
light rain
rain shwrs
some clouds
some clouds
some clouds
some clouds
light rain
rain shwrs
some clouds
light rain
mod rain
light rain
light rain
cloudy
cloudy
some clouds
some clouds
some clouds
clear
clear
 km/h
25
WSW
25
WNW
25
NE
15
NE
10
ENE
10
N
5
SSE
30
S
30
SSW
30
SSW
35
SSW
35
SSW
35
SSW
20
WSW
40
NE
45
NE
45
NNE
40
N
40
NNE
25
N
15
N
5
NNE
15
WSW
20
N
25
NE
20
ENE
20
NNE
35
N
35
NNE
35
NNE
35
NNE
30
N
25
N
25
NNE
20
N
15
N
 mm 
1
7
10
3
1
2
3
1
4
1
3
8
4
2
max°C
14
15
11
11
12
12
15
18
19
19
19
17
19
18
14
12
9
10
10
10
10
11
14
12
13
12
10
9
10
11
10
9
11
11
10
10
Moonrise
5:03
6:02
6:57
7:46
8:30
9:07
9:40
10:09
10:35
11:01
11:28
11:57
Moonset
2:43
3:27
4:19
5:16
6:17
7:19
8:22
9:25
10:28
11:32
12:38
Sunrise
6:39
6:41
6:41
6:41
6:43
6:43
6:43
6:43
6:45
6:45
6:45
6:46
Sunset
4:28
4:28
4:29
4:29
4:30
4:30
4:30
4:30
4:31
4:31
4:32
4:34
Today's sea temperature in Katsuura is
20.1° C
(Statistics for 17 Dec 1981-2005 – mean: 19.2 max: 20.3 min: 17.8°C)
Issued (local time): 2 pm Wednesday 17 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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