Ascension Island Sea Conditions and Tide Table

Ascension Island 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 07:10 PM.

Days 1–4 Weather Summary

Mostly dry. Warm air temperatures (max 23°C on Thu afternoon, min 22°C on Thu night). Mainly fresh winds.

Days 5–7 Weather Summary

Mostly dry. Warm air temperatures (max 23°C on Sun afternoon, min 22°C on Sun night). Wind will be generally light.

Days 8–10 Weather Summary

Mostly dry. Warm (max 24°C on Thu morning, min 23°C on Wed afternoon). Wind will be generally light.

Days 11–13 Weather Summary

Mostly dry. Warm (max 24°C on Sat night, min 23°C on Sat afternoon). Wind will be generally light.

Thu
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
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
5:28PM1.13m
5:31AM1.06m
6:01PM1.16m
6:06AM1.05m
6:33PM1.17m
6:40AM1.05m
7:06PM1.18m
7:16AM1.03m
7:40PM1.18m
7:53AM1.02m
8:16PM1.18m
8:32AM1.00m
8:56PM1.16m
9:17AM0.98m
9:40PM1.15m
10:09AM0.95m
10:32PM1.13m
11:12AM0.94m
11:33PM1.11m
12:24PM0.95m
00:41AM1.10m
1:38PM0.99m
1:52AM1.10m
Low Tide
11:37PM0.46m
11:38AM0.38m
00:13AM0.45m
12:10PM0.38m
00:48AM0.44m
12:43PM0.38m
1:23AM0.43m
1:16PM0.39m
2:00AM0.43m
1:50PM0.41m
2:39AM0.44m
2:28PM0.43m
3:23AM0.45m
3:11PM0.46m
4:13AM0.46m
4:01PM0.49m
5:10AM0.46m
5:02PM0.51m
6:15AM0.46m
6:15PM0.53m
7:22AM0.44m
7:33PM0.52m
8:26AM0.40m
Wave
height (m) 
direction
period (s) 
1.5
NNW
13
1.4
NW
12
1.3
SW
11
1.4
SSW
11
1.3
S
10
1.2
NW
14
1.3
NW
14
1.2
NW
13
1.2
NW
13
1.2
NW
12
1.3
WNW
12
1.2
W
11
1.2
NNW
16
1.3
NNW
16
1.2
NW
14
1.3
NNW
16
1.3
NNW
15
1.3
NNW
14
1.3
NW
14
1.3
NNW
14
1.3
WNW
13
1.3
W
13
1.2
NNW
17
1.2
NNW
16
1.1
NNW
15
1.1
NNW
14
1
NNW
14
1
NNW
14
0.9
NNW
13
0.9
NNW
13
0.9
NNW
13
0.8
NNW
13
0.7
NW
13
0.9
NNW
12
1
NW
12
1
SSW
16
cloud
cloud
part cloud
clear
cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
cloud
part cloud
cloud
cloud
clear
part cloud
cloud
cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
cloudy
cloudy
some clouds
clear
cloudy
some clouds
clear
some clouds
some clouds
some clouds
some clouds
cloudy
some clouds
some clouds
clear
clear
some clouds
some clouds
clear
some clouds
cloudy
some clouds
cloudy
cloudy
clear
some clouds
cloudy
cloudy
cloudy
some clouds
some clouds
clear
some clouds
some clouds
some clouds
cloudy
 km/h
30
SE
30
ESE
25
SE
25
ESE
25
ESE
25
SE
25
SE
25
SSE
25
SE
25
SE
25
SE
25
SE
20
SE
20
SE
15
SE
20
SE
20
SE
25
SE
20
ESE
25
ESE
25
ESE
20
ESE
20
SE
20
SE
25
SSE
20
SE
15
SSE
20
SE
15
SE
20
SE
20
SE
20
ESE
20
ESE
25
ESE
30
ESE
25
ESE
 mm 
max°C
23
23
23
23
23
23
23
23
23
23
23
22
22
22
23
23
23
23
23
23
24
24
23
23
24
24
23
23
24
23
23
23
23
23
23
23
Moonrise
5:56
6:48
7:41
8:34
9:26
10:16
11:04
11:52
12:41
1:31
2:25
Moonset
6:05
6:57
7:49
8:39
9:27
10:12
10:55
11:35
12:16
12:57
1:42
2:30
Sunrise
6:35
6:37
6:37
6:37
6:37
6:39
6:39
6:39
6:39
6:41
6:41
6:41
Sunset
7:10
7:12
7:12
7:13
7:13
7:14
7:14
7:15
7:15
7:15
7:15
7:15
Today's sea temperature in Ascension Island is
24.7° C
(Statistics for 18 Dec 1981-2005 – mean: 25.1 max: 26.1 min: 24.3°C)
Issued (local time): 5 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest