September / Zone 21

Zone 21 is the area inside 27-32 degrees S Latitude and 117 -106 degreesW Longitude (Around Rapa Nui which lies 27 degrees S by 109.5 degrees W)

Average Wind Speed: 12.6

Number of Observations: 354

Source: Pub. 122: Sailing Directions (Planning Guide) South Pacific Ocean, 2nd Edition (U.S. Defense Mapping Agency 1994)

* = < 0.5 %, but > 0 %

Wind Speed (Knots)	0-3	4-6	7-10	11-16	17-21	22-27	28-33	34-40	41-47	>47	Total % of Wind Direction
N	*	1	1	2	1	2	*				7
NE		1	3	3	1	1	*				9
E		2	7	8	6	1	*				24
SE	1	4	7	7	5	3	*				27
S	*	1	5	5	2	*	1				14
SW	*	1	*	2	1						4
W		*	1	2	*						3
NW	1	2	4	1	*	1	*				9
Calm	2										2
Total % of Wind Speed	4	12	28	30	16	8	1