Hey Dwight and others,
Tampico is a great spot which is really windy usually almost every time I check on the internet. The Gulf Coast of Mexico gets a LOT of wind almost all year round. DonÃ‚Â´t really know what altamira will be like, probably not too nice(town, infrastructure, etc.), but the beaches should be sandy and the waves shouldnÃ‚Â´t be too big, and the beer and chow should be good and cheap. You have to order a local fish called "Negrilla"(pronounced NEGRIYUH) or huachinango, (WATCHINANGO), this is the best fish in the world in my opinion. Conditions should be very similar to any of the Texas beaches. IÃ‚Â´ve heard that right by the port of Tampico it is a little dirty, but I am sure a quick drive and you will find adequate spots.Most spots in Mexico are very good from January to April, others are good from October to MAY/june. Tampico is good almost all year round, the only exception is the summer, when it is the rainy season here(June-September). We have still had a lot of great sessions when it isnÃ‚Â´t raining.
The gulf coast gets a lot of frequent Norte storms, which cientifically are called High pressure systems, or cold fronts. These create constant and really strong winds which come from the north. These winds hit most of the gulf of mexico's beaches sideshore, and are pretty constant in the late september to may time period. Many nortes come in at about 25-35 knots, others come in stronger. There was one last year that came in at 90 knots! Well, anyway, all in all I am pretty sure you will get great winds and kitesurfing at tampico, take all your gear though.
Don't hesitate to contact me with questions.