July and August. And it's relatively clear also. During the rainy season, silt from upstream is carried down through the river, to cause all sorts of problems down south. The river tends to clear during the summer, get too low in the fall, and far too cold in the winter. Snow here is rare, with Guilin getting maybe one inch at at time, if it snows at all.
Temperatures get damn cold in the winter.
In the summer, it is not uncommon for the temperatures here, and throughout a good deal of central China also, to reach 34 to 38 degrees Centigrade. The central government in all parts of China takes responsibility for reporting the daily temperature. And, quite interesting, it is illegal for the Chinese to work when the temperature reaches 40 degrees Centigrade or above. When it hit 40, everybody gets the day off. From what I've been told, temperatures have hit in the low 40's, the the Central government reports the daily temperature at 39.