Prevailing Pacific Coast wind direction - degrees

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Jun 3, 2004
51
- - San Diego, CA
I need some advice on the on the general direction of the prevailing winds down the west cost. I realize it is Northwesterly, but I would like to see if there is a generally accepted degree direction. I also realize it can change based on lots of variables. We will be going down the coast from San Diego to Caba San Lucas for the Baja Ha-Ha on Octobr 29th and returning the latter part of November or first of December. In trying to plot a couple of options for the return, one is referred to as the Baja Bash if you go up the coast with the wind on your nose for 800 miles and very few anhorages and fueling docks, or whether we choose to go out to sea and head towards (but not to) Hawaii and then tack back to San Diego. One is motoring all of the way north and the other is sailing. We would prefer the sailing option but it depends on how far westerly we need to go before we can head northeasterly to San Diego. Our limited experience with the degree direction is approximately 130 degrees from the northwest going downwind and approximately 310 degrees heading back up Baja. I also understand that November and December are the best times to go both south to Baja and north from Baja. Is there anyone that has taken both routes (inside and outside) back up from Baja at this time of the year and if so approximately how far out and at what bearing did you go before tacking to San Diego, if that is where you returned to. This is our first trip that far south so we do not have any experience. We have read most of the Baja books ie: Mexican Boating Guide (the new one), Charlies Charts of Mexico, MexWx, etc. etc. We have a 2006 Beneteau 473, so we are not concerned about the boat being able to handle either route, but would like some input. If we can get some general degree direction of the northwesterlies then we can plot an approximate course to determine how far out (toward Hawii)and what bearing to determine approximately when we can tack to San Diego and at what bearing. This would obviously give us a better understand of the total miles and therefore better forcast the number of days, etc. If it is too far and too long then we may pursur the inside route. Of course we realize that all of our plans can change based on the reality of the weather at the time we are about to return north, but we would like to do as much planning with certain sets of assumptions that certainly are subject to change. Thanks for any help. Rich
 
Oct 25, 2005
735
Catalina 30 Banderas Bay, Mexico
You need pilot charts ...

Pilot charts will show you the wind direction and percent of the time the wind blows from that direction for each month of the year. Virtual Passage Planner automates the process. It will take the boat information that you give it and plan a route based on the probable wind direction and strength. From San Lucas to San Diego the December winds are from 341 degrees on average and about 11 knots for a passage that only goes offshore as due south of San Diego. Expect to sail for 8 days non-stop. In November the average wind direction is the same but the wind speed is slightly less. Still about 8 24 hour days. You have to sail almost due West to get reaching conditions and although boat speed is higher, the passage time goes to more than 10 days. The average current set in the area is 180 degrees.
 

Ross

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Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
this link may be useful

http://nauticalcharts.noaa.gov/nsd/cpdownload.htm This is the site for free downloads of the NOAA coast pilots.
 
Feb 17, 2006
5,274
Lancer 27PS MCB Camp Pendleton KF6BL
Check this site...

You can see the projected winds.
 
Jun 3, 2004
51
- - San Diego, CA
Thanks for the help on Pacific Coast wind

Thanks to Brian D, Ross and Moody Buccaneer for your help, we really appreciate it, the sites and advice you gave were very helpful. MB, I downloaded the demo version of the VPP2 program, it is great and is exactly what I was looking for, actually it has even better than I was looking for. I will download the pay version tomorrow and start doing my "what ifs" with the real data. We plan to do more extended crusing next year down to the Panama Canal and beyond and this program will be a tremendous benefit. Thanks again for the quick response and very valuable advice. Rich
 
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