Cardiganshire History (page 2)
Cardiganshire Climate
The CLIMATE of the mountains is for the most part cold, wet, and tempestuous; that of the vales is not so humid as in the adjoining county of Carmarthen, as they open to a smaller extent of sea, and the range of mountains separating the vales of Towy and Teivy frequently intercept rains from the south, which would otherwise be precipitated in this county. In the vicinity of the coast the temperature of the atmosphere is of course much more equable than further inland. The wheat harvest seldom begins before the third week in August, except in one or two more genial spots, which form exceptions to the general climate; the place that yields the very earliest crops is Lleiniau Llan Non, a tract noted for the production of barley, where, in forward seasons, this grain is harvested between the 10th and 20th of July.