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 07:11 AM and sunset is at 06:54 PM.

Days 1–3 Weather Summary

Light rain (total 3mm), mostly falling on Sun morning. Warm air temperatures (max 24°C on Fri morning, min 23°C on Fri night). Mainly fresh winds.

Days 4–6 Weather Summary

Mostly dry. Warm air temperatures (max 24°C on Mon morning, min 23°C on Mon night). Mainly fresh winds.

Days 7–9 Weather Summary

Light rain (total 2mm), mostly falling on Sat morning. Warm (max 24°C on Fri morning, min 23°C on Thu morning). Wind will be generally light.

Days 10–12 Weather Summary

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

Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
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
11:41AM1.12m
00:32AM0.98m
12:53PM1.08m
1:51AM1.00m
2:11PM1.06m
3:04AM1.06m
3:23PM1.06m
4:05AM1.14m
4:25PM1.08m
4:58AM1.21m
5:18PM1.10m
5:45AM1.26m
6:05PM1.10m
6:28AM1.30m
6:48PM1.10m
7:09AM1.30m
7:27PM1.09m
7:48AM1.29m
8:04PM1.06m
8:24AM1.25m
8:41PM1.03m
9:01AM1.19m
9:18PM0.99m
Low Tide
6:19PM0.45m
6:30AM0.52m
7:30PM0.45m
7:56AM0.52m
8:39PM0.43m
9:15AM0.48m
9:40PM0.40m
10:22AM0.43m
10:34PM0.37m
11:18AM0.37m
11:22PM0.34m
12:07PM0.34m
00:05AM0.32m
12:51PM0.32m
00:45AM0.31m
1:32PM0.32m
1:23AM0.32m
2:11PM0.35m
1:59AM0.35m
2:48PM0.39m
2:36AM0.39m
3:25PM0.43m
3:12AM0.45m
Wave
height (m) 
direction
period (s) 
1.5
SSW
16.0
1.4
S
18.0
1.7
S
16.0
1.9
S
15.0
1.9
S
14.0
1.8
SSW
13.0
1.6
SSW
13.0
1.6
SSW
13.0
1.5
SSW
13.0
1.5
SSW
12.0
1.5
SSW
12.0
1.5
SSW
12.0
1.3
SSW
11.0
1.3
SE
7.0
1.2
SE
7.0
1.2
SE
7.0
1.2
SE
8.0
1.2
SE
7.0
1.2
SSW
19.0
1.3
SSW
18.0
1.4
SSW
17.0
1.5
SSW
15.0
1.6
SSW
15.0
1.7
SSW
14.0
1.6
SSW
13.0
1.6
SSW
13.0
1.5
SSW
13.0
1.5
SSW
12.0
1.4
SSW
12.0
1.4
SSW
11.0
1.4
SE
8.0
1.4
SSW
14.0
1.5
SSW
13.0
1.6
SSW
14.0
1.7
SSW
14.0
1.7
SSW
13.0
clear
clear
clear
cloud
clear
clear
rain showers
clear
rain showers
part cloud
clear
part cloud
part cloud
clear
cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
rain showers
rain showers
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
cloudy
clear
clear
rain shwrs
clear
rain shwrs
some clouds
clear
some clouds
some clouds
clear
cloudy
some clouds
clear
some clouds
some clouds
clear
clear
clear
clear
clear
rain shwrs
rain shwrs
clear
clear
clear
some clouds
clear
some clouds
some clouds
some clouds
clear
some clouds
 km/h
25
SE
20
SE
30
ESE
30
SE
30
SE
30
ESE
30
ESE
25
ESE
25
SE
30
SE
30
SE
30
SE
25
SE
25
SE
25
SE
20
SSE
20
SE
25
SE
25
ESE
25
ESE
25
ESE
25
ESE
25
ESE
25
ESE
25
ESE
25
ESE
30
ESE
25
ESE
30
ESE
25
ESE
25
ESE
20
SE
25
SE
20
ESE
20
SE
20
SE
 mm 
2
1
1
1
max°C
24
24
24
23
23
23
23
24
24
24
24
23
23
23
23
23
23
23
23
23
23
24
24
23
23
24
23
23
23
23
23
23
23
23
23
23
Moonrise
12:52
1:48
2:47
3:50
4:54
5:57
6:55
7:48
8:35
9:17
9:57
10:34
Moonset
12:59
1:49
2:45
3:45
4:48
5:52
6:52
7:49
8:40
9:28
10:14
10:58
Sunrise
7:11
7:11
7:11
7:11
7:11
7:11
7:11
7:11
7:11
7:11
7:11
7:11
Sunset
6:54
6:54
6:54
6:54
6:54
6:55
6:55
6:55
6:55
6:55
6:55
6:55
Today's sea temperature in Ascension Island is 25.8 °C (Statistics for 18 Jul 1981-2005 – mean: 25.5 max: 26.3 min: 24.5°C)
Issued (local time): 11 am Friday 18 Jul 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest