Weather
By far the best times to visit the area are spring (April-June) and autumn (late September and October), when the sun shines almost every day, but not at temperatures likely to induce sunstroke or heat exhaustion. July and August can be wearing, with temperatures rising to the high 80s F/30s C every day (although there is little humidity on the Aegean coast). Winters are comparatively mild, with little snow even in a particularly cold year, although there can be a lot of rain.
Those who dislike crowds may have to weigh the colder weather and risk of rain against the fact that the crowds will be less oppressive in winter, especially at Ephesus.