Io Sima (Nagasaki) Sea Conditions and Tide Table

Io Sima (Nagasaki) 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 05:15 PM.

Days 1–4 Weather Summary

Light rain (total 5mm), mostly falling on Wed afternoon. Cool air temperatures (max 16°C on Wed morning, min 9°C on Mon night). Mainly fresh winds.

Days 5–7 Weather Summary

Heavy rain (total 36mm), heaviest during Sat night. Cool air temperatures (max 19°C on Sat afternoon, min 12°C on Thu night). Wind will be generally light.

Days 8–10 Weather Summary

Some drizzle, heaviest during Sun afternoon. Very mild (max 16°C on Sun afternoon, min 7°C on Mon night). Winds decreasing (strong winds from the NE on Mon night, light winds from the ENE by Wed morning).

Days 11–13 Weather Summary

Moderate rain (total 18mm), heaviest on Wed night. Very mild (max 15°C on Wed night, min 9°C on Thu night). Winds increasing (calm on Wed afternoon, strong winds from the N by Thu morning).

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
4:16PM2.27m
5:37AM2.25m
5:06PM2.31m
6:34AM2.40m
5:53PM2.36m
7:23AM2.53m
6:37PM2.41m
8:07AM2.63m
7:19PM2.46m
8:48AM2.69m
8:00PM2.50m
9:27AM2.71m
8:41PM2.51m
10:05AM2.69m
9:23PM2.49m
10:43AM2.65m
10:06PM2.43m
11:21AM2.58m
10:53PM2.35m
12:00PM2.49m
11:45PM2.24m
12:42PM2.40m
00:45AM2.13m
Low Tide
10:58PM0.60m
11:21AM1.18m
11:49PM0.40m
12:17PM1.18m
00:35AM0.22m
1:06PM1.17m
1:18AM0.08m
1:50PM1.14m
1:59AM-0.02m
2:32PM1.12m
2:39AM-0.07m
3:12PM1.09m
3:19AM-0.05m
3:51PM1.06m
3:59AM0.02m
4:32PM1.03m
4:40AM0.15m
5:15PM1.00m
5:22AM0.33m
6:01PM0.96m
6:07AM0.53m
6:53PM0.93m
6:57AM0.76m
Wave
height (m) 
direction
period (s) 
0.4
W
5
0.2
WSW
6
0.1
SW
6
0.1
W
5
0.1
W
4
0.2
WSW
3
0.9
WSW
4
0.5
WSW
6
0.2
WSW
5
0.1
W
5
0.1
W
4
0.1
SE
2
0.3
SSE
3
0.4
SSW
4
0.6
SSW
5
0.6
SSW
5
0.7
S
5
0.4
SSW
5
0.4
SW
4
0.5
NNW
4
0.7
N
3
0.7
NNW
4
0.9
NNE
4
0.6
NE
3
0.4
NE
3
0.1
NE
2
0.1
E
2
0.1
S
5
0.2
S
4
1.2
W
5
1
NW
5
0.5
N
4
0.2
WSW
6
0.4
NW
3
1.3
WNW
5
1.3
WNW
5
clear
clear
part cloud
cloud
part cloud
rain showers
rain showers
part cloud
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
heavy rain
mod rain
rain showers
clear
clear
clear
clear
part cloud
cloud
part cloud
cloud
cloud
heavy rain
rain showers
rain showers
part cloud
part cloud
cloud
light rain
light rain
clear
clear
some clouds
cloudy
some clouds
rain shwrs
rain shwrs
some clouds
clear
clear
clear
clear
some clouds
some clouds
cloudy
some clouds
heavy rain
mod rain
rain shwrs
clear
clear
clear
clear
some clouds
cloudy
some clouds
cloudy
cloudy
heavy rain
rain shwrs
rain shwrs
some clouds
some clouds
cloudy
light rain
light rain
 km/h
10
NW
5
NNW
5
E
5
S
5
SE
15
S
30
WNW
15
N
15
NNE
5
N
10
E
10
ESE
15
SSE
15
SE
15
SE
15
SSE
15
S
10
ESE
20
NNE
25
N
30
NNE
30
N
45
NE
35
NE
20
NE
10
NE
10
ENE
5
NNE
10
E
35
WNW
30
N
25
NNE
10
NE
20
NW
35
NW
35
NW
 mm 
2
3
27
9
1
13
1
1
2
1
max°C
11
10
12
13
14
16
16
14
13
14
13
15
17
16
17
19
18
16
16
14
13
13
10
9
11
9
11
12
15
15
12
9
10
10
10
9
Moonrise
3:44
4:42
5:40
6:37
7:32
8:22
9:06
9:45
10:18
10:49
11:17
11:44
Moonset
2:21
2:55
3:34
4:19
5:10
6:07
7:07
8:09
9:10
10:11
11:13
Sunrise
7:15
7:16
7:16
7:16
7:16
7:18
7:18
7:18
7:18
7:20
7:20
7:20
Sunset
5:15
5:15
5:15
5:16
5:16
5:16
5:17
5:17
5:19
5:19
5:20
5:21
Today's sea temperature in Io Sima (Nagasaki) is
19.5° C
(Statistics for 15 Dec 1981-2005 – mean: 20.5 max: 21.8 min: 19.0°C)
Issued (local time): 2 pm Monday 15 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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