Coast and sea
Marine observations - Greenwich Light Vessel
- Location 50.417, 0
- Altitude 0 m above mean sea level
Monday (1 September 2025)
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature |
17.8° Celsius
|
17.9° Celsius
|
18.1° Celsius
|
17.4° Celsius
|
17.9° Celsius
|
17.5° Celsius
|
18.0° Celsius
|
18.2° Celsius
|
18.1° Celsius
|
17.6° Celsius
|
18.0° Celsius
|
18.0° Celsius
|
18.0° Celsius
|
17.9° Celsius
|
17.9° Celsius
|
| Wind Direction and speed |
SSW
24
|
SSW
22
|
SSW
21
|
SW
18
|
SW
22
|
SW
18
|
SW
17
|
WSW
20
|
SW
18
|
WSW
17
|
WSW
21
|
WSW
22
|
WSW
23
|
WSW
22
|
WSW
22
|
| Visibility | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles |
| Humidity | 81% | 81% | 79% | 79% | 78% | 83% | 81% | 75% | 76% | 80% | 76% | 76% | 76% | 74% | 71% |
| Pressure | 1,005 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,006 hectopascals | 1,006 hectopascals | 1,006 hectopascals | 1,007 hectopascals | 1,007 hectopascals | 1,007 hectopascals | 1,007 hectopascals |
| Dew point temperature | 14.4° Celsius | 14.6° Celsius | 14.4° Celsius | 13.7° Celsius | 14.0° Celsius | 14.5° Celsius | 14.7° Celsius | 13.7° Celsius | 13.9° Celsius | 14.2° Celsius | 13.7° Celsius | 13.7° Celsius | 13.7° Celsius | 13.1° Celsius | 12.6° Celsius |
| Sea Temperature | 18.0° Celsius | 18.1° Celsius | 18.1° Celsius | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius | 18.1° Celsius | 18.1° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius |
| Wave Height | 1.4 metres | 1.4 metres | 1.5 metres | 1.4 metres | 1.6 metres | 1.4 metres | 1.4 metres | 1.3 metres | 1.3 metres | 1.2 metres | 1.1 metres | 1.0 metres | 1.1 metres | 1.1 metres | 1.1 metres |
| Wave period | 7.0 seconds | 7.0 seconds | 7.0 seconds | 6.0 seconds | 6.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds |
Tuesday (2 September 2025)
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature |
17.9° Celsius
|
17.4° Celsius
|
17.5° Celsius
|
17.4° Celsius
|
17.5° Celsius
|
17.4° Celsius
|
17.4° Celsius
|
17.4° Celsius
|
17.3° Celsius
|
17.1° Celsius
|
17.3° Celsius
|
17.5° Celsius
|
17.1° Celsius
|
18.3° Celsius
|
18.0° Celsius
|
18.7° Celsius
|
18.2° Celsius
|
18.5° Celsius
|
19.0° Celsius
|
18.9° Celsius
|
18.7° Celsius
|
18.6° Celsius
|
18.5° Celsius
|
18.5° Celsius
|
| Wind Direction and speed |
SW
22
|
SW
19
|
SW
21
|
SW
23
|
SW
21
|
SW
18
|
SSW
19
|
SSW
19
|
S
19
|
S
24
|
SSE
22
|
SSE
23
|
SSE
23
|
S
27
|
S
21
|
SW
16
|
SW
15
|
SSW
14
|
SW
14
|
SSW
16
|
SW
25
|
SW
25
|
SW
28
|
WSW
24
|
| Visibility | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 10 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 10 nautical miles | 10 nautical miles | 1 nautical miles | < 1 nautical miles | 5 nautical miles | 10 nautical miles | 10 nautical miles | 5 nautical miles | 10 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles | 5 nautical miles |
| Humidity | 70% | 75% | 80% | 79% | 80% | 75% | 79% | 80% | 83% | 81% | 82% | 81% | 87% | 81% | 88% | 86% | 84% | 88% | 83% | 86% | 82% | 83% | 82% | 83% |
| Pressure | 1,007 hectopascals | 1,007 hectopascals | 1,006 hectopascals | 1,006 hectopascals | 1,006 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,004 hectopascals | 1,003 hectopascals | 1,003 hectopascals | 1,002 hectopascals | 1,002 hectopascals | 1,002 hectopascals | 1,002 hectopascals | 1,002 hectopascals | 1,002 hectopascals | 1,002 hectopascals | 1,002 hectopascals | 1,002 hectopascals | 1,003 hectopascals | 1,003 hectopascals |
| Dew point temperature | 12.4° Celsius | 12.9° Celsius | 14.1° Celsius | 13.7° Celsius | 14.0° Celsius | 13.0° Celsius | 13.7° Celsius | 13.9° Celsius | 14.4° Celsius | 13.9° Celsius | 14.2° Celsius | 14.2° Celsius | 15.0° Celsius | 15.0° Celsius | 16.0° Celsius | 16.3° Celsius | 15.5° Celsius | 16.4° Celsius | 16.1° Celsius | 16.5° Celsius | 15.5° Celsius | 15.7° Celsius | 15.3° Celsius | 15.5° Celsius |
| Sea Temperature | 17.9° Celsius | 17.9° Celsius | 17.9° Celsius | 17.9° Celsius | 17.8° Celsius | 17.8° Celsius | 17.8° Celsius | 17.8° Celsius | 17.9° Celsius | 17.9° Celsius | 17.9° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius |
| Wave Height | 1.2 metres | 1.2 metres | 1.2 metres | 1.3 metres | 1.2 metres | 1.3 metres | 1.4 metres | 1.2 metres | 1.3 metres | 1.2 metres | 1.2 metres | 1.1 metres | 1.3 metres | 1.1 metres | 1.1 metres | 1.1 metres | 1.2 metres | 1.1 metres | 1.0 metres | 1.0 metres | 0.9 metres | 1.0 metres | 1.1 metres | 1.5 metres |
| Wave period | 7.0 seconds | 6.0 seconds | 6.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 7.0 seconds |
Wednesday (3 September 2025)
| 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 06:00 | 07:00 | 08:00 | |
|---|---|---|---|---|---|---|---|---|---|
| Temperature |
18.6° Celsius
|
18.4° Celsius
|
17.6° Celsius
|
18.3° Celsius
|
19.3° Celsius
|
19.6° Celsius
|
19.5° Celsius
|
19.5° Celsius
|
19.7° Celsius
|
| Wind Direction and speed |
SSW
21
|
SSW
21
|
S
28
|
S
33
|
SSW
35
|
SSW
31
|
S
30
|
S
31
|
S
26
|
| Visibility | 5 nautical miles | 5 nautical miles | < 1 nautical miles | 2 nautical miles | 2 nautical miles | 2 nautical miles | 2 nautical miles | 5 nautical miles | 1 nautical miles |
| Humidity | 84% | 88% | 92% | 90% | 88% | 87% | 89% | 89% | 89% |
| Pressure | 1,003 hectopascals | 1,002 hectopascals | 1,001 hectopascals | 1,000 hectopascals | 999 hectopascals | 999 hectopascals | 998 hectopascals | 998 hectopascals | 999 hectopascals |
| Dew point temperature | 15.9° Celsius | 16.3° Celsius | 16.2° Celsius | 16.6° Celsius | 17.2° Celsius | 17.3° Celsius | 17.6° Celsius | 17.7° Celsius | 17.9° Celsius |
| Sea Temperature | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius | 18.0° Celsius |
| Wave Height | 1.8 metres | 1.6 metres | 1.6 metres | 1.6 metres | 1.7 metres | 2.0 metres | 2.1 metres | 2.3 metres | 2.3 metres |
| Wave period | 7.0 seconds | 7.0 seconds | 7.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 7.0 seconds | 7.0 seconds |
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Marine forecasts disclaimer
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