Physics and Chemistry. Diffusion is the movement of particles from an area of high concentration to an area of low concentration. Diffusion is not to be confused with osmosis, which is the movement of water through a semi-permeable membrane. However, osmosis is a special case of diffusion.
Avignon: Annual Weather Averages. July is the hottest month in Avignon with an average temperature of 24Â°C (75Â°F) and the coldest is January at 6Â°C (43Â°F) with the most daily sunshine hours at 13 in July.The wettest month is September with an average of 65.8mm of rain.vignon: Annual Weather Averages. July is the hottest month in Avignon with an average temperature of 24Â°C (75Â°F) and the coldest is January at 6Â°C (43Â°F) with the most daily sunshine hours at 13 in July.
Below this temperature, the vines are usually in a period of dormancy. Drastically below this temperature, such as the freezing point of 0 Â°C (32 Â°F) the vines can be damaged by frost. When the average daily temperature is between 17 and 20 Â°C (63 and 68 Â°F) the vine will begin flowering. When temperatures rise up to 27 Â°C (80 Â°F) many of the vine's physiological processes are in full stride as grape clusters begin to ripen on the vine.