Station 25: Plymouth
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Figure ‘a’: Monthly mean surface temperature for the entire duration of the record at the station which are derived from simple averaging of all the monthly data.
Monthly Mean Sea Temperature for PLYMOUTH at 50° 22' N, 4° 10' W
| Year |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
mean |
| 1957 |
9.3 |
9.2 |
10.1 |
11.0 |
12.3 |
14.7 |
15.8 |
15.6 |
15.2 |
14.4 |
11.7 |
9.9 |
12.4 |
| 1958 |
9.0 |
8.7 |
7.9 |
8.6 |
11.3 |
13.5 |
15.1 |
15.5 |
16.2 |
14.2 |
12.9 |
10.4 |
11.9 |
| 1959 |
9.2 |
8.2 |
9.0 |
10.2 |
12.4 |
14.4 |
15.9 |
17.1 |
17.4 |
15.6 |
13.7 |
10.9 |
12.8 |
| 1960 |
9.4 |
8.4 |
8.0 |
9.6 |
12.7 |
15.2 |
15.5 |
16.0 |
15.7 |
14.4 |
12.1 |
10.3 |
12.3 |
| 1961 |
8.7 |
9.2 |
10.0 |
11.2 |
12.3 |
14.7 |
16.3 |
16.1 |
16.4 |
15.0 |
12.1 |
9.7 |
12.6 |
| 1962 |
8.1 |
8.8 |
6.9 |
8.7 |
10.5 |
13.2 |
15.1 |
15.1 |
15.0 |
14.2 |
11.4 |
9.6 |
11.4 |
| 1963 |
5.4 |
4.7 |
6.4 |
8.3 |
10.2 |
13.3 |
14.5 |
15.0 |
14.3 |
13.4 |
12.0 |
9.4 |
10.6 |
| 1964 |
8.1 |
8.0 |
7.9 |
9.1 |
12.1 |
14.9 |
15.6 |
15.8 |
16.1 |
14.1 |
11.8 |
8.9 |
11.9 |
| 1965 |
8.2 |
7.2 |
7.4 |
9.2 |
11.5 |
13.9 |
15.2 |
15.3 |
14.4 |
14.2 |
11.1 |
9.7 |
11.4 |
| 1966 |
8.5 |
9.1 |
9.5 |
10.0 |
11.6 |
14.8 |
15.2 |
15.6 |
16.3 |
14.8 |
11.8 |
9.2 |
12.2 |
| 1967 |
9.0 |
8.6 |
9.1 |
9.5 |
11.1 |
13.8 |
16.0 |
15.8 |
15.1 |
13.9 |
10.5 |
9.4 |
11.8 |
| 1968 |
8.3 |
7.1 |
7.0 |
8.7 |
10.5 |
13.7 |
15.0 |
15.6 |
15.2 |
14.3 |
10.4 |
9.6 |
11.3 |
| 1969 |
9.4 |
7.4 |
6.9 |
9.2 |
10.0 |
14.1 |
15.5 |
15.9 |
15.5 |
15.3 |
12.2 |
9.5 |
11.7 |
| 1970 |
8.3 |
7.4 |
7.8 |
8.9 |
10.8 |
14.7 |
14.7 |
15.5 |
15.1 |
13.7 |
11.9 |
10.0 |
11.6 |
| 1971 |
8.2 |
8.0 |
8.3 |
9.6 |
11.1 |
13.3 |
16.0 |
16.0 |
15.7 |
15.1 |
11.7 |
10.9 |
12.0 |
| 1972 |
9.4 |
8.8 |
8.4 |
9.2 |
11.1 |
12.1 |
14.1 |
15.4 |
14.8 |
13.6 |
12.1 |
10.5 |
11.6 |
| 1973 |
9.4 |
8.9 |
8.6 |
9.3 |
10.8 |
13.4 |
15.2 |
15.7 |
15.3 |
13.9 |
12.3 |
9.7 |
11.9 |
| 1974 |
9.1 |
8.3 |
8.0 |
9.7 |
11.1 |
13.0 |
15.5 |
16.3 |
15.3 |
12.5 |
10.2 |
10.2 |
11.6 |
| 1975 |
9.4 |
8.6 |
8.9 |
|
10.0 |
14.9 |
16.2 |
17.5 |
15.5 |
13.5 |
11.8 |
10.9 |
|
| 1976 |
9.4 |
7.5 |
7.8 |
9.4 |
11.3 |
14.3 |
16.8 |
17.4 |
15.6 |
14.1 |
11.0 |
9.3 |
12.0 |
| 1977 |
6.6 |
7.5 |
8.3 |
9.3 |
11.6 |
14.3 |
15.3 |
16.1 |
15.1 |
14.3 |
11.8 |
9.8 |
11.7 |
| 1978 |
9.0 |
7.0 |
7.4 |
8.0 |
10.8 |
13.3 |
14.1 |
15.3 |
15.4 |
13.9 |
12.7 |
10.2 |
11.4 |
| 1979 |
7.4 |
6.7 |
7.1 |
8.3 |
10.3 |
12.9 |
15.1 |
15.5 |
14.5 |
14.5 |
11.4 |
10.8 |
11.2 |
| 1980 |
8.6 |
8.7 |
8.9 |
9.6 |
11.5 |
13.4 |
14.1 |
15.1 |
13.5 |
13.0 |
10.8 |
9.6 |
11.4 |
| 1981 |
8.3 |
7.7 |
8.8 |
10.1 |
10.8 |
11.9 |
14.1 |
15.7 |
16.5 |
13.0 |
11.7 |
9.8 |
11.5 |
| 1982 |
7.8 |
8.2 |
8.5 |
9.9 |
11.5 |
14.2 |
15.6 |
16.3 |
15.6 |
14.0 |
12.2 |
9.8 |
12.0 |
| 1983 |
9.3 |
7.6 |
7.2 |
8.3 |
10.7 |
12.9 |
16.0 |
17.2 |
15.7 |
13.8 |
12.0 |
9.9 |
11.7 |
| 1984 |
8.9 |
8.1 |
7.7 |
8.8 |
10.5 |
12.8 |
15.0 |
16.7 |
15.6 |
13.6 |
12.0 |
10.3 |
11.7 |
| 1985 |
10.3 |
8.2 |
7.8 |
9.7 |
11.2 |
13.7 |
15.7 |
14.9 |
14.8 |
14.5 |
11.4 |
|
|
| 1986 |
7.1 |
4.4 |
4.3 |
5.8 |
8.4 |
11.3 |
13.3 |
14.0 |
13.6 |
13.1 |
10.6 |
9.0 |
9.6 |
| 1987 |
6.6 |
5.0 |
6.3 |
9.0 |
10.2 |
12.3 |
16.0 |
16.4 |
15.3 |
13.4 |
10.6 |
8.0 |
10.8 |
| 1988 |
7.0 |
7.6 |
7.2 |
9.1 |
11.1 |
13.7 |
14.7 |
15.2 |
14.8 |
13.1 |
11.3 |
10.9 |
11.3 |
| 1989 |
9.6 |
9.1 |
9.1 |
9.9 |
12.4 |
14.8 |
17.0 |
17.8 |
16.7 |
15.0 |
11.9 |
9.7 |
12.8 |
| 1990 |
9.2 |
8.9 |
9.3 |
9.8 |
12.3 |
13.6 |
15.2 |
17.0 |
15.5 |
14.7 |
11.8 |
9.5 |
12.2 |
| 1991 |
8.1 |
7.0 |
8.8 |
9.8 |
11.4 |
13.0 |
14.5 |
15.4 |
17.0 |
14.2 |
11.8 |
10.3 |
11.8 |
| 1992 |
9.5 |
9.5 |
10.1 |
10.7 |
13.2 |
15.5 |
16.8 |
17.0 |
15.9 |
13.8 |
12.2 |
10.4 |
12.9 |
| 1993 |
9.8 |
9.9 |
9.7 |
11.0 |
13.1 |
14.8 |
16.2 |
16.7 |
16.5 |
14.4 |
11.7 |
10.2 |
12.8 |
| mean |
8.6 |
7.9 |
8.1 |
9.3 |
11.2 |
13.7 |
15.3 |
16.0 |
15.5 |
14.1 |
11.7 |
9.9 |
|
| count |
37 |
37 |
37 |
36 |
37 |
37 |
37 |
37 |
37 |
37 |
37 |
36 |
|
| sd |
1.04 |
1.24 |
1.20 |
0.98 |
0.97 |
0.97 |
0.83 |
0.83 |
0.84 |
0.69 |
0.71 |
0.63 |
|
Source: Plymouth City Council
