The main cities you will want to visit in the region are Seville, Cordoba, Granada & Ronda. The Spanish marina (Alcaidesa Marina) right next to Gibraltar in La Linea de la Concepcion is convenient.
PROs Good views of Gibraltar, two nautical shops & maintenance
services nearby. Gibraltar airport & Gibraltar are both a walk from the marina. Probably offer "catamaran for price
of a monohull" during the off season. Good showers & WCs at the marina.
CONs Authentic Spanish town but not sufficiently interesting fin itself or 3-4 months. Flight connections from Gibraltar are not as good as Malaga.
Another idea is to go out of the Med to Cadiz (Puerto America).
PROs Beautiful city with more interest for 3-4 months. Good showers & WCs at the marina. Easy to visit Seville if you rent a car. Beaches near Cadiz area attractive. Great restaurants in the city.
CONs Marina is a long walk (20min) from the city centre. No restaurants/cafes/supermarkets at the marina. Jerez airport is 40min taxi ride away.
To the North East from Gibraltar, Estepona is attractive.
PROs Small town making a good base for 3-4 months if you have a car. Attractive marina with good showers & WCs. Beaches nearby are attractive. A lot of restaurants, bars, cafes right in the marina. Sunday markets bring a lot of visitors and interest. There is a good supermarket very close to the marina.
CONs Marina is a walk (15min) from the real town centre. Might be difficult to accommodate a catamaran
- although there are some catamarans moored there. Malaga airport is 60min taxi ride away - costs about €120. Flight connections are good & cheap
Even further North East is Almerimar which has been covered already in the thread - main attraction is low price
. There are also marinas
to the West of Malaga (eg Puerto Banus) but they are aimed more at motor
I'm estimating the mooring
cost will be about €500 per month. The price depends a lot on whether you can get a "catamaran for price of monohull" deal, less likely in Estepona I think. Renting
a car is ideal in which case the location is less important. Parking is easy at La Linea and Cadiz in the marinas
. Parking at Estepona is less convenient, but is possible near to the marina (maybe 5 min walk). Access to the marina by car at Estepona is heavily controlled.
I think sailing this coast in February will be fine if you can choose if and when you sail. Obviously the weather
will be cool - average low temps are about 50F but will feel warmer when it is sunny.