Coast and sea
Marine observations - Brittany
- Location 47.55, -8.47
- 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 |
16.1° Celsius
|
17.7° Celsius
|
17.5° Celsius
|
17.4° Celsius
|
17.9° Celsius
|
18.0° Celsius
|
17.6° Celsius
|
16.9° Celsius
|
17.4° Celsius
|
18.3° Celsius
|
18.2° Celsius
|
18.3° Celsius
|
18.6° Celsius
|
18.7° Celsius
|
18.2° Celsius
|
| Wind Direction and speed |
W
14
|
WNW
20
|
W
20
|
W
17
|
WSW
19
|
W
17
|
W
17
|
W
26
|
WSW
15
|
W
20
|
WSW
20
|
SW
20
|
SW
21
|
SSW
25
|
S
28
|
| Humidity | 79% | 72% | 76% | 75% | 74% | 74% | 75% | 79% | 73% | 71% | 76% | 78% | 73% | 78% | 90% |
| Pressure | 1,009 hectopascals | 1,010 hectopascals | 1,010 hectopascals | 1,010 hectopascals | 1,010 hectopascals | 1,011 hectopascals | 1,011 hectopascals | 1,010 hectopascals | 1,010 hectopascals | 1,010 hectopascals | 1,010 hectopascals | 1,009 hectopascals | 1,008 hectopascals | 1,006 hectopascals | 1,004 hectopascals |
| Dew point temperature | 12.4° Celsius | 12.6° Celsius | 13.3° Celsius | 13.0° Celsius | 13.2° Celsius | 13.3° Celsius | 13.1° Celsius | 13.3° Celsius | 12.6° Celsius | 12.9° Celsius | 13.9° Celsius | 14.3° Celsius | 13.6° Celsius | 14.8° Celsius | 16.5° Celsius |
| Sea Temperature | 18.4° Celsius | 18.2° Celsius | 18.3° Celsius | 18.3° Celsius | 18.1° Celsius | 18.2° Celsius | 18.1° Celsius | 18.2° Celsius | 18.2° Celsius | 18.3° Celsius | 18.3° Celsius | 18.3° Celsius | 18.3° Celsius | 18.3° Celsius | 18.2° Celsius |
| Wave Height | 4.8 metres | 4.9 metres | 5.1 metres | 4.0 metres | 5.0 metres | 4.1 metres | 3.9 metres | 3.4 metres | 4.2 metres | 4.3 metres | 3.9 metres | 4.1 metres | 3.7 metres | 3.6 metres | 3.6 metres |
| Wave period | 8.0 seconds | 8.0 seconds | 8.0 seconds | 8.0 seconds | 8.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 8.0 seconds | 8.0 seconds | 7.0 seconds | 8.0 seconds | 7.0 seconds | 7.0 seconds | 6.0 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 |
18.1° Celsius
|
18.7° Celsius
|
17.7° Celsius
|
17.5° Celsius
|
18.4° Celsius
|
18.2° Celsius
|
17.7° Celsius
|
18.0° Celsius
|
18.2° Celsius
|
18.2° Celsius
|
18.3° Celsius
|
18.0° Celsius
|
18.2° Celsius
|
18.6° Celsius
|
18.7° Celsius
|
18.7° Celsius
|
18.4° Celsius
|
19.0° Celsius
|
19.3° Celsius
|
19.6° Celsius
|
19.5° Celsius
|
19.6° Celsius
|
19.7° Celsius
|
19.7° Celsius
|
| Wind Direction and speed |
SW
25
|
WSW
25
|
WSW
25
|
WSW
28
|
W
25
|
W
25
|
W
24
|
W
24
|
W
25
|
W
23
|
W
23
|
W
25
|
W
22
|
WSW
24
|
WSW
20
|
SW
19
|
SW
22
|
SSW
25
|
SSW
27
|
SSW
28
|
SW
27
|
SSW
29
|
SSW
29
|
SSW
30
|
| Humidity | 94% | 83% | 88% | 86% | 81% | 82% | 87% | 84% | 81% | 82% | 84% | 83% | 82% | 77% | 81% | 84% | 91% | 90% | 88% | 89% | 91% | 90% | 89% | 89% |
| Pressure | 1,004 hectopascals | 1,004 hectopascals | 1,003 hectopascals | 1,003 hectopascals | 1,003 hectopascals | 1,003 hectopascals | 1,003 hectopascals | 1,004 hectopascals | 1,004 hectopascals | 1,005 hectopascals | 1,005 hectopascals | 1,006 hectopascals | 1,006 hectopascals | 1,006 hectopascals | 1,006 hectopascals | 1,006 hectopascals | 1,005 hectopascals | 1,004 hectopascals | 1,003 hectopascals | 1,003 hectopascals | 1,003 hectopascals | 1,002 hectopascals | 1,001 hectopascals | 1,001 hectopascals |
| Dew point temperature | 17.1° Celsius | 15.8° Celsius | 15.7° Celsius | 15.1° Celsius | 15.1° Celsius | 15.1° Celsius | 15.5° Celsius | 15.3° Celsius | 14.8° Celsius | 15.1° Celsius | 15.5° Celsius | 15.0° Celsius | 15.0° Celsius | 14.4° Celsius | 15.4° Celsius | 16.0° Celsius | 16.9° Celsius | 17.3° Celsius | 17.3° Celsius | 17.8° Celsius | 18.0° Celsius | 18.0° Celsius | 17.9° Celsius | 17.8° Celsius |
| Sea Temperature | 18.2° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius | 18.3° Celsius | 18.3° Celsius | 18.3° Celsius | 18.3° Celsius | 18.3° Celsius | 18.4° Celsius | 18.3° Celsius | 18.3° Celsius | 18.3° Celsius | 18.2° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius | 18.1° Celsius |
| Wave Height | 3.6 metres | 3.5 metres | 3.8 metres | 3.9 metres | 3.8 metres | 3.8 metres | 3.9 metres | 3.9 metres | 4.1 metres | 3.4 metres | 3.8 metres | 3.6 metres | 3.6 metres | 4.1 metres | 3.5 metres | 3.4 metres | 3.3 metres | 3.4 metres | 3.3 metres | 3.5 metres | 3.8 metres | 4.0 metres | 3.9 metres | 4.0 metres |
| Wave period | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 6.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 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 |
Wednesday (3 September 2025)
| 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 06:00 | 07:00 | 08:00 | |
|---|---|---|---|---|---|---|---|---|---|
| Temperature |
19.8° Celsius
|
19.5° Celsius
|
18.7° Celsius
|
16.7° Celsius
|
18.7° Celsius
|
18.2° Celsius
|
18.5° Celsius
|
18.5° Celsius
|
17.9° Celsius
|
| Wind Direction and speed |
SSW
29
|
SSW
30
|
S
29
|
SSW
26
|
SSW
22
|
WSW
29
|
SW
22
|
WSW
26
|
WNW
26
|
| Humidity | 87% | 88% | 93% | 94% | 87% | 81% | 85% | 85% | 88% |
| Pressure | 1,000 hectopascals | 999 hectopascals | 998 hectopascals | 997 hectopascals | 996 hectopascals | 996 hectopascals | 996 hectopascals | 997 hectopascals | 999 hectopascals |
| Dew point temperature | 17.6° Celsius | 17.5° Celsius | 17.5° Celsius | 15.8° Celsius | 16.4° Celsius | 14.9° Celsius | 15.9° Celsius | 15.9° Celsius | 15.8° Celsius |
| Sea Temperature | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius | 18.2° Celsius |
| Wave Height | 4.4 metres | 4.4 metres | 4.2 metres | 4.2 metres | 3.7 metres | 3.9 metres | 3.6 metres | 4.1 metres | 4.3 metres |
| Wave period | 6.0 seconds | 7.0 seconds | 7.0 seconds | 7.0 seconds | 6.0 seconds | 7.0 seconds | 6.0 seconds | 7.0 seconds | 7.0 seconds |
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