Nisi (Io Sima) Sea Conditions and Tide Table

Nisi (Io Sima) 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 06:15 AM and sunset is at 04:51 PM.

Days 1–3 Weather Summary

Moderate rain (total 12mm), heaviest on Thu night. Warm air temperatures (max 24°C on Tue morning, min 22°C on Tue afternoon). Winds decreasing (strong winds from the ENE on Tue night, moderate winds from the E by Wed night).

Days 4–6 Weather Summary

Mostly dry. Warm air temperatures (max 23°C on Fri morning, min 19°C on Fri night). Winds decreasing (strong winds from the NNW on Fri morning, light winds from the NNE by Sat night).

Days 7–9 Weather Summary

Light rain (total 8mm), mostly falling on Tue night. Warm (max 23°C on Tue night, min 21°C on Mon morning). Winds decreasing (fresh winds from the SSE on Tue night, calm by Wed night).

Days 10–12 Weather Summary

Light rain (total 4mm), mostly falling on Thu afternoon. Warm (max 23°C on Thu morning, min 20°C on Fri morning). Winds increasing (light winds from the NE on Sat morning, strong winds from the SSW by Sun morning).

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
9:34AM0.92m
7:56PM0.83m
10:11AM0.91m
8:44PM0.78m
10:47AM0.89m
9:39PM0.73m
11:24AM0.87m
10:48PM0.67m
12:04PM0.85m
00:17AM0.63m
12:45PM0.84m
2:06AM0.62m
1:30PM0.83m
3:49AM0.66m
2:18PM0.83m
5:05AM0.73m
3:06PM0.83m
6:00AM0.79m
3:53PM0.84m
6:45AM0.85m
4:41PM0.85m
7:22AM0.89m
5:26PM0.86m
Low Tide
3:01PM0.56m
2:58AM0.04m
3:48PM0.53m
3:37AM0.11m
4:41PM0.50m
4:18AM0.20m
5:41PM0.46m
5:03AM0.29m
6:47PM0.40m
7:54PM0.33m
6:58AM0.48m
8:56PM0.25m
8:17AM0.55m
9:50PM0.17m
9:37AM0.59m
10:38PM0.09m
10:46AM0.61m
11:21PM0.02m
11:43AM0.61m
00:02AM-0.02m
12:30PM0.59m
00:41AM-0.05m
Wave
height (m) 
direction
period (s) 
2
E
10
2.4
ENE
9
3.5
NE
9
3
ENE
9
2.3
NE
9
1.9
NE
9
1.9
NE
12
2
NE
12
2.2
NE
14
2.4
ENE
13
2.5
NW
7
3.5
NW
10
3
NW
11
2.5
NW
10
2
NW
10
1.9
NNW
9
1.8
NE
13
1.5
ENE
13
1.4
ENE
12
1.3
ENE
12
1.5
N
6
1.6
NNE
7
1.7
ENE
7
1.9
ENE
8
2.2
E
8
2
NE
17
1.8
NE
16
1.8
NE
16
2.1
NE
16
2.3
NW
7
2.4
NW
9
2.2
NNW
8
1.9
NNW
8
1.6
NNW
8
1.5
N
8
1.5
N
8
cloud
cloud
thunderstorm
part cloud
cloud
clear
clear
thunderstorm
thunderstorm
part cloud
cloud
part cloud
cloud
cloud
part cloud
clear
cloud
part cloud
part cloud
clear
part cloud
clear
clear
rain showers
rain showers
clear
clear
cloud
light rain
cloud
part cloud
part cloud
cloud
part cloud
cloud
light rain
cloudy
cloudy
risk tstorm
some clouds
cloudy
clear
clear
risk tstorm
risk tstorm
some clouds
cloudy
some clouds
cloudy
cloudy
some clouds
clear
cloudy
some clouds
some clouds
clear
some clouds
clear
clear
rain shwrs
rain shwrs
clear
clear
cloudy
light rain
cloudy
some clouds
some clouds
cloudy
some clouds
cloudy
light rain
 km/h
25
ENE
50
ENE
45
ENE
40
E
30
E
25
ESE
30
SE
35
SSE
40
SSW
40
NNW
40
NNW
35
NNE
20
NNE
20
NE
20
N
30
N
35
N
20
NNE
20
NNE
25
NE
30
ENE
30
E
25
E
30
SE
20
S
10
WSW
5
S
25
WSW
40
NW
30
N
25
NNW
30
N
25
NNE
20
NE
20
ENE
30
SE
 mm 
1
2
9
6
2
1
2
max°C
24
23
22
23
23
24
24
24
24
23
22
20
20
20
20
20
21
21
21
21
22
22
22
23
23
23
23
23
23
22
21
20
20
20
21
23
Moonrise
8:40
9:18
9:52
10:25
10:57
11:30
12:06
12:46
1:33
2:28
3:31
4:40
Moonset
7:37
8:34
9:31
10:27
11:24
12:24
1:27
2:34
3:45
4:55
6:03
Sunrise
6:15
6:15
6:16
6:16
6:16
6:16
6:18
6:18
6:18
6:18
6:18
6:18
Sunset
4:51
4:51
4:52
4:52
4:52
4:53
4:53
4:54
4:55
4:55
4:57
4:58
Today's sea temperature in Nisi (Io Sima) is
25.7° C
(Statistics for 23 Dec 1981-2005 – mean: 24.5 max: 25.5 min: 23.5°C)
Issued (local time): 8 am Tuesday 23 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest