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 07:18 AM and sunset is at 05:19 PM.

Days 1–3 Weather Summary

Moderate rain (total 15mm), heaviest on Tue night. Cool air temperatures (max 17°C on Tue afternoon, min 4°C on Thu night). Winds increasing (light winds from the NNW on Wed afternoon, near gales from the NW by Thu afternoon).

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 11°C on Sun night, min 4°C on Fri morning). Winds decreasing (fresh winds from the NNW on Fri morning, calm by Sat morning).

Days 7–9 Weather Summary

Some drizzle, heaviest during Tue morning. Very mild (max 16°C on Mon night, min 6°C on Wed night). Winds increasing (light winds from the SE on Mon morning, fresh winds from the NNW by Wed night).

Days 10–12 Weather Summary

Light rain (total 5mm), mostly falling on Sat night. Mild temperatures (max 9°C on Sat night, min 5°C on Fri afternoon). Winds decreasing (fresh winds from the NW on Thu morning, light winds from the NNE by Fri night).

Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
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
10:43AM2.65m
10:06PM2.43m
11:21AM2.58m
10:53PM2.35m
12:00PM2.49m
11:45PM2.24m
12:42PM2.40m
00:45AM2.13m
1:27PM2.31m
1:58AM2.04m
2:17PM2.24m
3:22AM2.01m
3:12PM2.19m
4:47AM2.08m
4:10PM2.18m
5:59AM2.21m
5:08PM2.21m
6:56AM2.35m
6:00PM2.26m
7:45AM2.49m
6:50PM2.34m
8:26AM2.59m
7:36PM2.41m
Low Tide
4:32PM1.03m
4:40AM0.15m
5:15PM1.00m
5:22AM0.33m
6:01PM0.96m
6:07AM0.53m
6:53PM0.93m
6:57AM0.76m
7:52PM0.87m
7:56AM0.97m
8:57PM0.78m
9:07AM1.15m
10:03PM0.65m
10:23AM1.26m
11:05PM0.49m
11:35AM1.29m
00:00AM0.31m
12:35PM1.27m
00:49AM0.16m
1:26PM1.20m
1:34AM0.03m
2:10PM1.12m
2:16AM-0.06m
Wave
height (m) 
direction
period (s) 
0.2
ESE
2
0.3
S
3
0.7
S
5
0.7
S
6
0.6
S
5
0.6
W
4
1.6
WNW
5
1.9
NW
6
2.1
NW
7
1.4
NW
6
0.8
NW
5
0.4
NW
3
0.2
W
5
0.4
WNW
4
0.6
NW
4
0.4
NW
4
0.1
W
3
0.1
SW
3
0.1
SE
2
0.4
SSW
3
0.6
WSW
4
0.7
W
4
0.6
NW
4
0.3
NW
3
0.7
NW
4
1
NW
5
1.2
NW
5
1.1
NW
5
1.2
NW
5
0.9
NW
5
1.1
NW
5
0.5
NW
4
0.1
W
4
0.1
W
2
0.1
NW
1
0.4
NW
3
clear
part cloud
mod rain
rain showers
light rain
rain showers
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
light rain
cloud
part cloud
clear
part cloud
cloud
cloud
cloud
cloud
cloud
clear
part cloud
cloud
cloud
light rain
clear
some clouds
mod rain
rain shwrs
light rain
rain shwrs
cloudy
cloudy
cloudy
some clouds
some clouds
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
some clouds
light rain
cloudy
some clouds
clear
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
clear
some clouds
cloudy
cloudy
light rain
 km/h
10
ESE
20
S
20
SE
15
SE
15
NNW
20
WNW
45
NW
45
NW
50
NW
35
NNW
30
N
15
NE
10
ENE
15
NW
20
NNW
15
NE
5
NNW
10
ESE
15
SE
15
SW
20
W
25
NNW
20
NNW
15
N
25
N
35
NNW
35
NNW
30
NNW
35
NW
30
NNW
30
NNW
20
N
10
NNE
10
NE
15
NNW
15
NNW
 mm 
9
2
1
3
1
4
max°C
14
17
16
15
15
15
10
10
6
4
5
5
7
9
9
10
10
11
12
15
16
12
10
9
9
9
9
6
7
7
7
7
5
7
8
9
Moonrise
9:45
10:18
10:49
11:17
11:44
12:13
12:43
1:19
2:01
2:53
3:55
5:05
Moonset
8:09
9:10
10:11
11:13
12:15
1:20
2:28
3:40
4:55
6:08
7:14
Sunrise
7:18
7:18
7:20
7:20
7:20
7:20
7:20
7:22
7:22
7:22
7:22
7:22
Sunset
5:19
5:19
5:20
5:21
5:21
5:22
5:22
5:22
5:23
5:24
5:24
5:25
Today's sea temperature in Io Sima (Nagasaki) is
19.8° C
(Statistics for 23 Dec 1981-2005 – mean: 19.9 max: 21.4 min: 18.7°C)
Issued (local time): 8 am Tuesday 23 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest