PHYSICAL OCEANOGRAPHY OF THE GULF OF MAINE 
965 
The following tables, supplied by the United States and Canadian weather bu- 
reaus, show the prevailing winds, by months, for several stations around the coast of 
the gulf and over the latter. 
Average -percentage of winds from each direction (10 years, 1911 to 1920) 
BOSTON, MASS. 
Month 
North 
North- 
east 
East 
South- 
east 
South 
South- 
west 
West 
North- 
west 
January _ . _ 
10 
5 
2 
6 
3 
23 
28 
23 
February 
11 
6 
4 
3 
5 
17 
31 
24 
March . ... .. 
12 
7 
6 
6 
8 
17 
24 
20 
April .. 
9 
11 
12 
7 
6 
16 
18 
21 
May 
8 
9 
13 
8 
8 
21 
18 
15 
June 
10 
9 
15 
6 
6 
23 
18 
13 
July 
5 
6 
10 
5 
8 
33 
21 
12 
August 
7 
8 
10 
7 
11 
25 
18 
14 
September 
11 
7 
6 
8 
9 
22 
19 
18 
October 
9 
7 
7 
7 
10 
23 
20 
17 
November . 
10 
4 
4 
4 
7 
20 
32 
19 
December 
10 
4 
3 
3 
5 
16 
32 
27 
Average (or 3 winter months 
10 
5 
3 
4 
4 
19 
30 
25 
Average for 3 summer months 
7 
8 
12 
6 
8 
27 
19 
13 
Average for year 
9 
7 
8 
6 
7 
21 
23 
19 
PORTLAND, ME. 
January > 
21 
6 
1 
3 
6 
19 
19 
24 
February 1 
22 
4 
1 
4 
8 
17 
19 
24 
March 
17 
6 
3 
5 
13 
15 
18 
23 
April 
18 
12 
6 
4 
13 
13 
14 
20 
May 
12 
10 
9 
7 
21 
14 
12 
15 
10 
11 
10 
8 
18 
14 
13 
16 
11 
7 
7 
6 
25 
19 
15 
10 
August 1 - - 
9 
7 
9 
8 
23 
18 
11 
14 
September 1 
14 
7 
4 
5 
18 
19 
12 
20 
October 
15 
4 
4 
6 
15 
22 
15 
19 
November 
18 
4 
2 
4 
8 
24 
19 
21 
December 
21 
4 
1 
3 
5 
21 
19 
26 
Average for 3 winter months 
22 
5 
1 
3 
6 
19 
19 
25 
Average for 3 summer months 
10 
8 
9 
7 
22 
17 
13 
13 
Average for year 
16 
7 
5 
5 
14 
18 
15 
19 
EASTPORT, ME. 
January 
11 
7 
6 
4 
8 
17 
27 
21 
February. 
11 
9 
4 
4 
6 
16 
28 
22 
March 
10 
8 
5 
5 
13 
17 
20 
22 
April 
12 
14 
8 
3 
17 
16 
13 
17 
May — 
10 
11 
6 
3 
30 
16 
9 
14 
6 
12 
7 
4 
31 
15 
11 
14 
July ^ 
6 
9 
3 
2 
40 
21 
8 
9 
August 1 
4 
9 
4 
3 
38 
18 
10 
13 
September ‘ 
9 
6 
6 
3 
22 
21 
12 
21 
October.. 
10 
6 
5 
2 
22 
20 
14 
21 
November 
10 
9 
4 
3 
9 
24 
21 
20 
December 
14 
7 
6 
4 
6 
13 
27 
23 
Average for 3 winter months 
12 
8 
5 
4 
7 
15 
27 
22 
Average for 3 summer months 
5 
10 
5 
3 
37 
18 
10 
12 
Average for year 
9 
9 
5 
3 
20 
18 
17 
18 
1 One per cent calm. J Two per cent calm. 
