In 2013 I wanted to see how the harvest seasons in different parts of the world is reflected in what is offered at coffee shops in the United States.
This is the result of a sample of 170 single origin espressos from 30 roasters offered in 50 coffee shops.
My analysis is just a little fun exercise, without professional knowledge or comprehensive data collection.
Panama Esmeralda Gesha was only available in October. Mexico, Nicaragua and Costa Rica seem to be more common towards the end of the year, while Rwanda and South America in the beginning.
Coffees from Ethiopia, Colombia and Guatemala (and even Kenya) are available pretty much the whole year. I believe the first two because of the volume of coffee produced and the third because of easier trade relationships. They are probably imported in large quantity, stored locally and roasted in batches. Unless microlots are produced all over the year in each country without a main harvesting season.
Brazil also produces a large quantity but is rarely offered as single origin.
It would be interesting to compare with the statistics from another year.
For the sake of transparency and education, in 2014 I wish more roasters put the harvest date on their website and bag label and more coffee shops put the roast date in their menus.