St. Helena Is. (St Helena - Ascension and Tristan Da Cunha) weather
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Nearest forecast to your detected location
Forecast days
-
16° Maximum daytime temperature: 16° Celsius; 16° Minimum nighttime temperature: 16° Celsius;
Sunrise:
Sunset:
Cloudy.VH UVNo pollution data.No pollen data.16° Maximum daytime temperature: 16° Celsius; 16° Minimum nighttime temperature: 16° Celsius; -
17° Maximum daytime temperature: 17° Celsius; 16° Minimum nighttime temperature: 16° Celsius;
Sunrise:
Sunset:
Overcast.Ex UVNo pollution data.No pollen data.17° Maximum daytime temperature: 17° Celsius; 16° Minimum nighttime temperature: 16° Celsius; -
17° Maximum daytime temperature: 17° Celsius; 17° Minimum nighttime temperature: 17° Celsius;
Sunrise:
Sunset:
Cloudy changing to sunny intervals by lunchtime.Ex UVNo pollution data.No pollen data.17° Maximum daytime temperature: 17° Celsius; 17° Minimum nighttime temperature: 17° Celsius; -
17° Maximum daytime temperature: 17° Celsius; 16° Minimum nighttime temperature: 16° Celsius;
Sunrise:
Sunset:
Overcast changing to sunny intervals by lunchtime.Ex UVNo pollution data.No pollen data.17° Maximum daytime temperature: 17° Celsius; 16° Minimum nighttime temperature: 16° Celsius; -
17° Maximum daytime temperature: 17° Celsius; 17° Minimum nighttime temperature: 17° Celsius;
Sunrise:
Sunset:
Overcast changing to sunny intervals by lunchtime.Ex UVNo pollution data.No pollen data.17° Maximum daytime temperature: 17° Celsius; 17° Minimum nighttime temperature: 17° Celsius; -
17° Maximum daytime temperature: 17° Celsius; 17° Minimum nighttime temperature: 17° Celsius;
Sunrise:
Sunset:
Sunny intervals changing to overcast by early evening.Ex UVNo pollution data.No pollen data.17° Maximum daytime temperature: 17° Celsius; 17° Minimum nighttime temperature: 17° Celsius; -
17° Maximum daytime temperature: 17° Celsius; 16° Minimum nighttime temperature: 16° Celsius;
Sunrise:
Sunset:
Overcast changing to sunny intervals by lunchtime.VH UVNo pollution data.No pollen data.17° Maximum daytime temperature: 17° Celsius; 16° Minimum nighttime temperature: 16° Celsius;
Cloudy.
VH UV
No pollution data.
No pollen data.
Overcast.
Ex UV
No pollution data.
No pollen data.
Cloudy changing to sunny intervals by lunchtime.
Ex UV
No pollution data.
No pollen data.
Overcast changing to sunny intervals by lunchtime.
Ex UV
No pollution data.
No pollen data.
Overcast changing to sunny intervals by lunchtime.
Ex UV
No pollution data.
No pollen data.
Sunny intervals changing to overcast by early evening.
Ex UV
No pollution data.
No pollen data.
Overcast changing to sunny intervals by lunchtime.
VH UV
No pollution data.
No pollen data.
7 day forecast for St. Helena Is.
Today (16 September 2025)
Time |
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
---|---|---|---|---|---|---|---|---|---|---|---|
Weather symbols | |||||||||||
Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
Temperature (°C) |
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
Feels like temperature (°C) |
13°
|
13°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
Wind direction and speed (mph) |
ESE
15
|
ESE
15
|
SE
14
|
SE
14
|
SE
13
|
SE
14
|
SE
14
|
SE
14
|
SE
14
|
SE
15
|
SE
15
|
Wind gust (mph) |
21
|
20
|
19
|
19
|
19
|
19
|
19
|
20
|
20
|
20
|
20
|
Visibility (description) |
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
Humidity |
80%
|
80%
|
79%
|
79%
|
79%
|
80%
|
81%
|
81%
|
83%
|
84%
|
85%
|
UV | 9 | 6 | 5 | 2 | 1 | 1 | - | - | - | - | - |
Wednesday (17 September 2025)
Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Weather symbols | ||||||||||||||||||||||||
Chance of precipitation |
10%
|
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
Temperature (°C) |
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
Feels like temperature (°C) |
14°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
Wind direction and speed (mph) |
ESE
15
|
ESE
15
|
ESE
15
|
ESE
16
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
14
|
ESE
13
|
ESE
12
|
ESE
12
|
ESE
12
|
SE
12
|
SE
12
|
SE
13
|
SE
14
|
SE
15
|
SE
15
|
SE
16
|
SE
16
|
SE
16
|
SE
16
|
SE
16
|
ESE
15
|
Wind gust (mph) |
20
|
21
|
21
|
21
|
21
|
21
|
21
|
19
|
18
|
17
|
17
|
16
|
17
|
17
|
18
|
20
|
21
|
21
|
22
|
21
|
21
|
21
|
21
|
21
|
Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
Humidity |
85%
|
85%
|
85%
|
85%
|
85%
|
85%
|
85%
|
85%
|
85%
|
85%
|
84%
|
84%
|
85%
|
85%
|
85%
|
85%
|
85%
|
85%
|
85%
|
84%
|
83%
|
83%
|
84%
|
84%
|
UV | - | - | - | - | - | - | 1 | 1 | 3 | 5 | 8 | 9 | 10 | 6 | 5 | 3 | 2 | 1 | 1 | - | - | - | - | - |
Thursday (18 September 2025)
Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Weather symbols | ||||||||||||||||||||||||
Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
Temperature (°C) |
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
Feels like temperature (°C) |
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
14°
|
14°
|
14°
|
14°
|
Wind direction and speed (mph) |
ESE
15
|
SE
15
|
SE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
14
|
ESE
14
|
ESE
14
|
ESE
13
|
ESE
13
|
SE
13
|
SE
13
|
SE
14
|
SE
14
|
SE
15
|
SE
15
|
SE
15
|
SE
15
|
SE
15
|
Wind gust (mph) |
21
|
21
|
21
|
21
|
21
|
21
|
20
|
20
|
20
|
20
|
19
|
19
|
18
|
18
|
18
|
18
|
19
|
19
|
20
|
20
|
20
|
21
|
21
|
21
|
Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
Humidity |
83%
|
83%
|
84%
|
84%
|
84%
|
84%
|
83%
|
82%
|
82%
|
81%
|
80%
|
81%
|
82%
|
82%
|
83%
|
82%
|
82%
|
81%
|
79%
|
79%
|
79%
|
81%
|
81%
|
81%
|
UV | - | - | - | - | - | - | 1 | 1 | 3 | 6 | 7 | 8 | 11 | 10 | 6 | 5 | 2 | 1 | 1 | - | - | - | - | - |
Friday (19 September 2025)
Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Weather symbols | ||||||||||||||||||||||||
Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
Temperature (°C) |
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
Feels like temperature (°C) |
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
13°
|
13°
|
13°
|
Wind direction and speed (mph) |
SE
15
|
SE
15
|
SE
15
|
SE
15
|
SE
15
|
SE
15
|
SE
16
|
SE
16
|
SE
17
|
SE
17
|
SE
17
|
SE
17
|
SE
17
|
SE
17
|
SE
17
|
SE
17
|
SE
18
|
SE
18
|
SE
19
|
SE
19
|
SE
19
|
SE
19
|
SE
19
|
SE
19
|
Wind gust (mph) |
20
|
20
|
20
|
20
|
21
|
21
|
22
|
22
|
22
|
22
|
22
|
22
|
23
|
23
|
23
|
24
|
24
|
25
|
26
|
26
|
26
|
27
|
26
|
26
|
Visibility (description) |
VG
|
VG
|
G
|
VG
|
VG
|
G
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
Humidity |
81%
|
81%
|
81%
|
81%
|
82%
|
81%
|
81%
|
80%
|
82%
|
83%
|
81%
|
82%
|
83%
|
82%
|
83%
|
83%
|
83%
|
82%
|
83%
|
83%
|
82%
|
83%
|
83%
|
83%
|
UV | - | - | - | - | - | - | 1 | 1 | 3 | 5 | 8 | 11 | 11 | 9 | 6 | 3 | 2 | 1 | 1 | - | - | - | - | - |
Saturday (20 September 2025)
Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Weather symbols | ||||||||||||||||||||||||
Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
Temperature (°C) |
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
Feels like temperature (°C) |
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
Wind direction and speed (mph) |
SE
19
|
SE
19
|
SE
19
|
SE
19
|
SE
20
|
SE
20
|
SE
21
|
SE
21
|
SE
21
|
SE
21
|
SE
21
|
SE
21
|
SE
21
|
SE
21
|
SE
21
|
SE
21
|
SE
21
|
SE
22
|
SE
22
|
SE
22
|
SE
22
|
SE
23
|
SE
23
|
SE
23
|
Wind gust (mph) |
26
|
26
|
26
|
27
|
27
|
28
|
28
|
28
|
28
|
28
|
28
|
28
|
28
|
28
|
29
|
29
|
29
|
30
|
30
|
30
|
31
|
31
|
31
|
31
|
Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
Humidity |
83%
|
84%
|
84%
|
84%
|
84%
|
84%
|
84%
|
83%
|
84%
|
84%
|
84%
|
84%
|
83%
|
82%
|
82%
|
81%
|
81%
|
81%
|
82%
|
81%
|
81%
|
81%
|
81%
|
81%
|
UV | - | - | - | - | - | - | 1 | 1 | 2 | 6 | 9 | 10 | 10 | 9 | 7 | 4 | 2 | 1 | 1 | - | - | - | - | - |
Sunday (21 September 2025)
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
---|---|---|---|---|---|---|---|---|
Weather symbols | ||||||||
Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
Temperature (°C) |
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
Feels like temperature (°C) |
13°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
Wind direction and speed (mph) |
SE
23
|
SE
24
|
SE
25
|
SE
25
|
SE
25
|
SE
25
|
SE
25
|
SE
25
|
Wind gust (mph) |
33
|
34
|
34
|
34
|
34
|
35
|
34
|
34
|
Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
Humidity |
83%
|
83%
|
81%
|
79%
|
80%
|
79%
|
78%
|
77%
|
UV | - | - | 1 | 6 | 11 | 5 | 1 | - |
Monday (22 September 2025)
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
---|---|---|---|---|---|---|---|---|
Weather symbols | ||||||||
Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
Temperature (°C) |
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
Feels like temperature (°C) |
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
Wind direction and speed (mph) |
ESE
24
|
ESE
24
|
ESE
24
|
ESE
24
|
ESE
24
|
SE
23
|
SE
23
|
SE
23
|
Wind gust (mph) |
33
|
33
|
34
|
34
|
33
|
32
|
32
|
33
|
Visibility (description) |
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
G
|
VG
|
Humidity |
78%
|
77%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
UV | - | - | 1 | 5 | 10 | 5 | 1 | - |
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Forecast for 13:00 (UTC), Tue
Updated 13:28 (UTC+1) on Tue 16 Sep 2025
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