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 — and sunset is at 04:46 PM.

Days 1–4 Weather Summary

Light rain (total 3mm), mostly falling on Wed afternoon. Warm air temperatures (max 23°C on Wed afternoon, min 20°C on Mon night). Mainly fresh winds.

Days 5–7 Weather Summary

Light rain (total 9mm), mostly falling on Sun morning. Warm air temperatures (max 24°C on Fri night, min 22°C on Thu night). Winds increasing (moderate winds from the ENE on Thu afternoon, near gales from the E by Sat night).

Days 8–10 Weather Summary

Heavy rain (total 142mm), heaviest during Mon afternoon. Warm (max 25°C on Mon morning, min 19°C on Wed morning). Mainly near gales.

Days 11–13 Weather Summary

Light rain (total 7mm), mostly falling on Thu night. Warm (max 24°C on Fri morning, min 20°C on Wed afternoon). Winds decreasing (fresh winds from the WSW on Thu night, light winds from the WNW by Fri night).

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
2:31PM0.86m
4:31AM0.73m
3:13PM0.87m
5:30AM0.79m
3:53PM0.88m
6:19AM0.84m
4:33PM0.89m
7:03AM0.88m
5:12PM0.89m
7:43AM0.91m
5:51PM0.89m
8:21AM0.93m
6:31PM0.88m
8:58AM0.93m
7:12PM0.86m
9:34AM0.92m
7:56PM0.83m
10:11AM0.91m
8:44PM0.78m
10:47AM0.89m
9:39PM0.73m
11:24AM0.87m
10:48PM0.67m
Low Tide
9:44PM0.23m
9:23AM0.54m
10:28PM0.15m
10:25AM0.57m
11:09PM0.07m
11:19AM0.59m
11:49PM0.01m
12:06PM0.60m
00:27AM-0.03m
12:51PM0.60m
1:05AM-0.05m
1:33PM0.59m
1:42AM-0.04m
2:16PM0.58m
2:20AM-0.01m
3:01PM0.56m
2:58AM0.04m
3:48PM0.53m
3:37AM0.11m
4:41PM0.50m
4:18AM0.20m
5:41PM0.46m
5:03AM0.29m
Wave
height (m) 
direction
period (s) 
2.5
NNW
8
2.5
NW
10
2.3
NW
9
2
NW
9
1.8
NNW
8
1.7
N
8
1.8
NE
7
1.6
NNE
11
1.6
ENE
8
1.5
ENE
8
1.8
NE
17
1.7
NE
15
1.7
NE
15
2.2
E
7
2.4
E
8
3
ENE
9
3.5
ENE
9
3.5
E
9
3.5
E
10
3.5
E
10
4
E
10
3.5
E
10
3
E
10
2.5
E
10
3
N
8
3.5
N
12
3.5
N
13
3
NNE
13
3
NNE
12
2.5
NNE
13
2.4
NE
13
2.2
NE
13
2.1
NE
13
2
NE
13
2.1
NE
13
2.1
NE
12
clear
part cloud
cloud
cloud
cloud
cloud
light rain
rain showers
cloud
cloud
part cloud
part cloud
part cloud
part cloud
rain showers
light rain
light rain
light rain
mod rain
thunderstorm
thunderstorm
thunderstorm
heavy rain
light rain
part cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
rain showers
rain showers
rain showers
cloud
part cloud
clear
some clouds
cloudy
cloudy
cloudy
cloudy
light rain
rain shwrs
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
rain shwrs
light rain
light rain
light rain
mod rain
risk tstorm
risk tstorm
risk tstorm
heavy rain
light rain
some clouds
cloudy
cloudy
some clouds
some clouds
some clouds
clear
rain shwrs
rain shwrs
rain shwrs
cloudy
some clouds
 km/h
30
N
30
NNE
30
NE
25
NE
30
ENE
30
NE
30
ENE
20
E
20
E
25
ENE
30
ENE
30
ENE
30
ENE
35
E
40
E
40
E
50
E
50
ESE
45
SE
50
SE
55
SSE
40
SW
20
NW
40
N
40
N
35
NNE
30
NE
30
ENE
20
ENE
25
ESE
20
SSE
30
S
35
W
25
W
15
WNW
25
WNW
 mm 
1
2
1
2
3
3
7
32
31
56
15
1
5
1
1
max°C
22
21
21
21
22
21
23
23
23
23
23
23
23
24
24
23
24
24
24
24
25
24
24
23
22
21
19
20
20
22
22
23
24
24
23
23
Moonrise
2:42
3:36
4:31
5:26
6:20
7:11
7:58
8:40
9:18
9:52
10:25
10:57
Moonset
1:50
2:27
3:08
3:55
4:47
5:42
6:39
7:37
8:34
9:31
10:27
Sunrise
6:11
6:11
6:11
6:13
6:13
6:13
6:13
6:15
6:15
6:16
6:16
6:16
Sunset
4:46
4:47
4:47
4:49
4:49
4:49
4:50
4:50
4:51
4:51
4:52
4:52
Today's sea temperature in Nisi (Io Sima) is
26.4° C
(Statistics for 15 Dec 1981-2005 – mean: 25.0 max: 26.3 min: 24.1°C)
Issued (local time): 2 pm Monday 15 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest