St. Helena Is. (St Helena - Ascension and Tristan Da Cunha) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 17° Celsius;
Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius; -
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 17° Celsius;
Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius;
-
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 17° Celsius;
Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius; -
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 17° Celsius;
Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius;
-
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 17° Celsius;
Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius;
-
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 16° Celsius;
Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius;
-
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 16° Celsius;
Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius;
Sunny intervals changing to partly cloudy by early evening.
Sunrise:
Sunset:
VH UV
No pollution data.
No pollen data.
7 day forecast for St. Helena Is.
Today (22 September 2026)
| Time |
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%
|
| Temperature |
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
| Feels like temperature (°C) |
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
| Wind direction and speed |
SE
14
|
SE
14
|
SE
14
|
SE
13
|
SE
13
|
SE
13
|
SE
13
|
SE
13
|
SE
13
|
SE
13
|
ESE
13
|
ESE
13
|
| Wind gust (mph) |
19
|
18
|
18
|
18
|
18
|
17
|
17
|
18
|
18
|
17
|
17
|
17
|
| Visibility |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
67%
|
67%
|
66%
|
65%
|
65%
|
65%
|
65%
|
65%
|
65%
|
64%
|
64%
|
65%
|
| UV | 8 | 9 | 7 | 4 | 2 | 1 | 1 | - | - | - | - | - |
Wednesday (23 September 2026)
| 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 | |
 |
 |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 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) |
15°
|
15°
|
15°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
| Wind direction and speed (mph) |
SE
13
|
SE
13
|
SE
13
|
SE
14
|
SE
14
|
SE
15
|
SE
15
|
SE
16
|
SE
16
|
ESE
16
|
ESE
15
|
ESE
15
|
ESE
14
|
ESE
14
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
11
|
| Wind gust (mph) |
17
|
18
|
18
|
19
|
20
|
21
|
21
|
21
|
21
|
21
|
20
|
19
|
18
|
18
|
17
|
16
|
16
|
16
|
16
|
16
|
16
|
16
|
16
|
16
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
66%
|
66%
|
66%
|
66%
|
66%
|
66%
|
67%
|
67%
|
69%
|
68%
|
69%
|
69%
|
68%
|
67%
|
67%
|
67%
|
67%
|
67%
|
67%
|
67%
|
67%
|
66%
|
67%
|
67%
|
| UV | - | - | - | - | - | - | 1 | 1 | 3 | 5 | 6 | 10 | 9 | 9 | 7 | 4 | 2 | 1 | 1 | - | - | - | - | - |
Thursday (24 September 2026)
| 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 | |
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 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) |
15°
|
15°
|
15°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
| Wind direction and speed (mph) |
ESE
11
|
ESE
12
|
ESE
13
|
SE
13
|
ESE
14
|
ESE
14
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
E
14
|
ESE
13
|
ESE
12
|
ESE
12
|
ESE
11
|
ESE
11
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
| Wind gust (mph) |
16
|
17
|
17
|
18
|
19
|
20
|
20
|
20
|
20
|
20
|
20
|
19
|
18
|
17
|
16
|
15
|
15
|
16
|
16
|
16
|
16
|
17
|
17
|
17
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
67%
|
68%
|
69%
|
69%
|
69%
|
69%
|
71%
|
72%
|
72%
|
70%
|
71%
|
70%
|
70%
|
69%
|
69%
|
68%
|
68%
|
67%
|
67%
|
68%
|
68%
|
69%
|
70%
|
72%
|
| UV | - | - | - | - | - | - | 1 | 1 | 3 | 6 | 8 | 10 | 10 | 8 | 7 | 4 | 2 | 1 | 1 | - | - | - | - | - |
Friday (25 September 2026)
| 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) |
15°
|
15°
|
15°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
| Wind direction and speed (mph) |
ESE
12
|
ESE
13
|
ESE
13
|
SE
14
|
SE
15
|
ESE
16
|
ESE
17
|
ESE
17
|
ESE
18
|
ESE
18
|
ESE
18
|
ESE
17
|
ESE
17
|
ESE
16
|
ESE
15
|
ESE
15
|
SE
16
|
SE
16
|
SE
16
|
SE
17
|
SE
17
|
SE
17
|
SE
17
|
SE
17
|
| Wind gust (mph) |
17
|
17
|
19
|
20
|
21
|
22
|
23
|
23
|
23
|
23
|
23
|
22
|
21
|
21
|
20
|
20
|
20
|
21
|
21
|
21
|
21
|
21
|
22
|
22
|
| Visibility (description) |
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
72%
|
73%
|
74%
|
74%
|
74%
|
75%
|
75%
|
75%
|
74%
|
74%
|
75%
|
75%
|
75%
|
75%
|
75%
|
74%
|
74%
|
73%
|
74%
|
74%
|
74%
|
73%
|
74%
|
74%
|
| UV | - | - | - | - | - | - | 1 | 1 | 2 | 5 | 8 | 9 | 8 | 9 | 7 | 4 | 2 | 1 | 1 | - | - | - | - | - |
Saturday (26 September 2026)
| 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°
|
13°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
14°
|
| Wind direction and speed (mph) |
SE
17
|
SE
17
|
SE
17
|
SE
17
|
SE
17
|
SE
17
|
SE
18
|
SE
18
|
SE
18
|
ESE
18
|
ESE
18
|
ESE
17
|
ESE
17
|
ESE
16
|
ESE
16
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
ESE
15
|
| Wind gust (mph) |
22
|
22
|
22
|
22
|
23
|
24
|
24
|
24
|
24
|
24
|
23
|
23
|
22
|
21
|
20
|
20
|
19
|
19
|
20
|
20
|
20
|
20
|
20
|
20
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
75%
|
74%
|
74%
|
74%
|
74%
|
74%
|
74%
|
74%
|
74%
|
73%
|
73%
|
73%
|
73%
|
74%
|
74%
|
73%
|
72%
|
73%
|
73%
|
73%
|
73%
|
74%
|
75%
|
74%
|
| UV | - | - | - | - | - | - | 1 | 1 | 2 | 5 | 7 | 7 | 11 | 9 | 7 | 4 | 2 | 1 | 1 | - | - | - | - | - |
Sunday (27 September 2026)
| 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) |
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
| Wind direction and speed (mph) |
ESE
16
|
ESE
16
|
ESE
17
|
ESE
17
|
ESE
15
|
ESE
13
|
ESE
12
|
ESE
13
|
| Wind gust (mph) |
21
|
22
|
23
|
22
|
20
|
17
|
17
|
18
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
75%
|
75%
|
76%
|
75%
|
75%
|
75%
|
74%
|
74%
|
| UV | - | - | 1 | 6 | 10 | 4 | 1 | - |
Monday (28 September 2026)
| 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) |
15°
|
15°
|
15°
|
14°
|
15°
|
15°
|
16°
|
16°
|
| Wind direction and speed (mph) |
ESE
13
|
ESE
12
|
ESE
13
|
ESE
13
|
ESE
12
|
ESE
10
|
ESE
9
|
ESE
8
|
| Wind gust (mph) |
18
|
17
|
18
|
18
|
16
|
14
|
14
|
15
|
| Visibility (description) |
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
G
|
| Humidity |
75%
|
76%
|
76%
|
75%
|
75%
|
73%
|
73%
|
73%
|
| UV | - | - | 1 | 4 | 9 | 3 | 1 | - |
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Forecast for 1pm (UTC) Tuesday
Updated 07:28 (UTC+1) on Tue 22 Sep 2026
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