St. Helena Is. (St Helena - Ascension and Tristan Da Cunha) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 18° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 18° Celsius; -
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 18° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 18° Celsius;
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 18° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 18° Celsius;
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 18° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 18° Celsius; -
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 18° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 18° Celsius;
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 19° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 19° Celsius;
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 19° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 19° Celsius;
Clear.
Sunrise:
Sunset:
Ex UV
No pollution data.
No pollen data.
7 day forecast for St. Helena Is.
Today (19 December 2025)
| Time |
21:00
|
22:00
|
23:00
|
|---|---|---|---|
| Weather symbols |  |
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
| Temperature |
19°
|
19°
|
19°
|
| Feels like temperature (°C) |
17°
|
17°
|
17°
|
| Wind direction and speed |
ESE
12
|
ESE
12
|
ESE
12
|
| Wind gust (mph) |
17
|
17
|
17
|
| Visibility |
VG
|
VG
|
VG
|
| Humidity |
75%
|
75%
|
75%
|
| UV | - | - | - |
Saturday (20 December 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) |
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
| Feels like temperature (°C) |
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
17°
|
17°
|
17°
|
17°
|
17°
|
18°
|
18°
|
18°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
| Wind direction and speed (mph) |
ESE
12
|
ESE
12
|
ESE
12
|
ESE
13
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
11
|
ESE
10
|
ESE
10
|
ESE
10
|
ESE
9
|
ESE
8
|
ESE
8
|
SE
8
|
SE
8
|
SE
10
|
SE
10
|
SE
10
|
SE
11
|
SE
11
|
SE
11
|
SE
11
|
| Wind gust (mph) |
17
|
17
|
17
|
17
|
17
|
17
|
17
|
16
|
15
|
15
|
13
|
13
|
12
|
12
|
12
|
12
|
13
|
14
|
15
|
16
|
16
|
16
|
15
|
15
|
| 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%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
| UV | - | - | - | - | - | 1 | 1 | 2 | 4 | 8 | 11 | 13 | 14 | 13 | 10 | 7 | 4 | 1 | 1 | - | - | - | - | - |
Sunday (21 December 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) |
19°
|
19°
|
19°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
| Feels like temperature (°C) |
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
17°
|
17°
|
17°
|
17°
|
| Wind direction and speed (mph) |
SE
11
|
SE
10
|
SE
10
|
SE
10
|
SE
10
|
SE
10
|
SE
10
|
SE
10
|
ESE
9
|
ESE
9
|
ESE
8
|
ESE
8
|
ESE
7
|
SE
7
|
SE
7
|
SE
7
|
SSE
8
|
SSE
9
|
SSE
9
|
SSE
10
|
SSE
11
|
SSE
11
|
SSE
12
|
SSE
11
|
| Wind gust (mph) |
15
|
15
|
15
|
15
|
15
|
15
|
14
|
14
|
13
|
12
|
12
|
11
|
10
|
10
|
11
|
11
|
13
|
14
|
15
|
16
|
16
|
17
|
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 |
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
76%
|
76%
|
76%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
| UV | - | - | - | - | - | 1 | 1 | 2 | 4 | 8 | 11 | 13 | 14 | 13 | 10 | 7 | 4 | 1 | 1 | - | - | - | - | - |
Monday (22 December 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) |
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
18°
|
18°
|
18°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
| Feels like temperature (°C) |
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
18°
|
18°
|
18°
|
18°
|
18°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
| Wind direction and speed (mph) |
SSE
11
|
SSE
11
|
SE
11
|
SE
11
|
SE
10
|
SE
10
|
SE
10
|
SE
10
|
SE
10
|
ESE
10
|
ESE
9
|
ESE
9
|
ESE
9
|
SE
8
|
SE
7
|
SE
8
|
SE
9
|
SE
10
|
SE
10
|
SE
11
|
SE
11
|
SE
12
|
SE
12
|
SE
12
|
| Wind gust (mph) |
16
|
16
|
15
|
15
|
15
|
14
|
14
|
14
|
14
|
13
|
13
|
13
|
11
|
11
|
12
|
13
|
14
|
15
|
16
|
16
|
16
|
16
|
17
|
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 |
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
74%
|
74%
|
73%
|
72%
|
72%
|
72%
|
72%
|
72%
|
72%
|
73%
|
74%
|
74%
|
74%
|
74%
|
74%
|
| UV | - | - | - | - | - | 1 | 1 | 2 | 4 | 8 | 11 | 13 | 14 | 13 | 10 | 7 | 4 | 1 | 1 | - | - | - | - | - |
Tuesday (23 December 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) |
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
| Feels like temperature (°C) |
17°
|
17°
|
17°
|
17°
|
17°
|
16°
|
16°
|
16°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
17°
|
| Wind direction and speed (mph) |
SE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
ESE
12
|
E
12
|
E
12
|
E
11
|
E
11
|
E
10
|
E
9
|
E
8
|
E
8
|
ESE
7
|
ESE
7
|
ESE
8
|
ESE
9
|
ESE
9
|
ESE
9
|
ESE
10
|
ESE
10
|
| Wind gust (mph) |
16
|
16
|
17
|
17
|
17
|
17
|
17
|
17
|
17
|
16
|
16
|
15
|
14
|
13
|
12
|
12
|
11
|
12
|
13
|
13
|
13
|
13
|
14
|
14
|
| 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%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
74%
|
75%
|
74%
|
74%
|
73%
|
73%
|
74%
|
74%
|
73%
|
74%
|
74%
|
74%
|
74%
|
| UV | - | - | - | - | - | 1 | 1 | 1 | 4 | 7 | 9 | 12 | 13 | 12 | 10 | 7 | 3 | 1 | 1 | - | - | - | - | - |
Wednesday (24 December 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%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
19°
|
19°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
| Feels like temperature (°C) |
17°
|
17°
|
17°
|
17°
|
17°
|
18°
|
18°
|
18°
|
| Wind direction and speed (mph) |
ESE
10
|
ESE
10
|
E
11
|
E
11
|
E
10
|
E
8
|
E
8
|
E
7
|
| Wind gust (mph) |
15
|
16
|
16
|
16
|
14
|
12
|
12
|
11
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
75%
|
75%
|
75%
|
75%
|
75%
|
75%
|
73%
|
73%
|
| UV | - | - | 1 | 7 | 13 | 7 | 1 | - |
Thursday (25 December 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) |
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
| Feels like temperature (°C) |
18°
|
18°
|
18°
|
18°
|
18°
|
19°
|
19°
|
19°
|
| Wind direction and speed (mph) |
E
6
|
ESE
7
|
E
8
|
E
9
|
E
8
|
E
6
|
ESE
7
|
ESE
7
|
| Wind gust (mph) |
11
|
12
|
13
|
13
|
12
|
10
|
12
|
11
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
73%
|
74%
|
75%
|
75%
|
75%
|
74%
|
73%
|
72%
|
| UV | - | - | 1 | 7 | 14 | 7 | 1 | - |
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Forecast for 9pm (UTC) Friday
Updated 18:23 (UTC) on Fri 19 Dec 2025
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