The maximum temperature in Shiraz is on average 25°C over the year, with values generally ranging between 12°C in January and 37°C in July. Rains remain limited, with about 404 mm of precipitation per year. The driest month receives 0 mm in September, versus 88 mm in February for the wettest.
The weather is pleasant to stay to Shiraz in: April, May, June, July, August, September and October. However, the period when the weather is truly ideal is April, May, June, August, September and October.
For hiking and trekking, the best months are March, April and October.
In terms of crowd levels, the quietest periods are in February, while crowding is high in April, May, June, September, October, December, July and August.